w2-d Operations Manual

Operation Manual

WECO 2-D Version: 08.97

Order-No.:

1090-9910-01

Valued customer,

congratulations on the purchase of your W 2-D. You are now the owner of a device that meets the expectations for the degree of automatization, precision and operator convenience expected in the modern optical laboratory. The W 2-D is complements and completes the WECO CMS system. The manual helps the operator to use the device to its`fullest potential and to benefit from the effectiveness and accuracy of the system. The manual contains information for the installation, tips and instruction to effectively operate the W 2-D. Our recommendation: Please read this manual carefully. WECO wishes you good luck and success with your new W 2-D.

WECO OPTICAL MACHINERY

2

Valued customer,

congratulations on the purchase of your W 2-D. You are now the owner of a device that meets the expectations for the degree of automatization, precision and operator convenience expected in the modern optical laboratory. The W 2-D is complements and completes the WECO CMS system. The manual helps the operator to use the device to its`fullest potential and to benefit from the effectiveness and accuracy of the system. The manual contains information for the installation, tips and instruction to effectively operate the W 2-D. Our recommendation: Please read this manual carefully. WECO wishes you good luck and success with your new W 2-D.

WECO OPTICAL MACHINERY

2

Contents 1 Safety Guidelines Guidelines ....................... .................................. ....................... ........................ ....................... ....................... ........................ ....................... ................... ............4 ....4 2 Warranty Warranty Conditions Conditions ..................... ................................ ...................... ...................... ...................... ...................... ...................... ....................... .................... ............6 ....6 3 Description Description ....................... ................................... ....................... ....................... ........................ ....................... ....................... ........................ ..................... .....................7 ............7 3.1 General Information .....................................................................................................................................................7 3.2 Technical data............................................................................................................................................................11 3.3 Equipment and Accessories ......................................................................................................................................15

4 Start up...................................................................................................................................17 4.1 Unpacking and Installation.........................................................................................................................................17 4.2 First test run...............................................................................................................................................................22 4.3 Connecting CMS-units...............................................................................................................................................23 4.4 Block-up System........................................................................................................................................................25 4.5 Moving Moving the edger .......................................................................................................................................................29

5 Operation Procedures...........................................................................................................30 5.1 Systematic operating sequence with CAD 2000 (or CAD-e) .....................................................................................30 5.2 Lens lay-out with edger and MiniCAD (Order-no.: 1119-0800-00).............................................................................31 5.3 Centering with FormTracer and MiniCAD (Order-no.: 1119-0800-91).......................................................................48 1119-0800-91) .......................................................................48 5.3.1 Active lens lay-out (de-center the pattern) pattern) with the FormTracer 2D .......................................................................49 5.3.2 Passive decentration (De-centering the lens) with MiniCAD MiniCAD ..................................................................................51 5.4 Roughing procedure (all bevel types) with patterns...................................................................................................53 5.5 Roughing procedure (all bevel types) patternless operation......................................................................................55 5.6 Free-float bevel..........................................................................................................................................................57 5.7 Guided bevel edging..................................................................................................................................................58 edging............................. .....................................................................................................................58 5.8 Flat bevel ...................................................................................................................................................................60 5.9 Operating Procedure to re-edge a bevelled lens .......................................................................................................62 5.10 Edging with cycle pause ..........................................................................................................................................63 5.11 Lens-fitting foil..........................................................................................................................................................64 5.12 Plastic lens polishing ...............................................................................................................................................65 5.13 Polycarbonate lenses...............................................................................................................................................66 5.14 Keyboard programming............................................................................................................................................66 5.15 Calling-up a job with a bar-code reader (option)......................................................................................................69 5.16 Special Cases..........................................................................................................................................................70

6 Maintenance Maintenance ....................... ................................... ........................ ....................... ....................... ........................ ....................... ....................... ..................... .................72 ........72 6.1 Care of the edger.......................................................................................................................................................72 6.2 Grinding wheel care...................................................................................................................................................74 6.3 Replacing WECO grinding wheels.............................................................................................................................77 6.4 Cleaning the coolant re-circulation system ................................................................................................................80 6.5 Maintenance Intervals................................................................................................................................................81

7 Checking Checking Procedure Procedures s ........................ ................................... ....................... ........................ ....................... ....................... ........................ ....................... .............82 ..82 7.1 Reading the lens counters .........................................................................................................................................82 7.2 Adjustment of rough and finish size...........................................................................................................................84 7.3 Fine mechanical axis adjustment (Pattern adapter)...................................................................................................88

8 Trouble Shooting...................................................................................................................90 8.1 Minor Problems..........................................................................................................................................................90 8.2 Electric Fuses ............................................................................................................................................................91 8.3 Error messages..........................................................................................................................................................92

3

1 Safety Guidelines Please read the machine operating manual carefully before putting the machine into operation. Tips and Caution messages are printed in shaded areas for easy recognition

CAUTION

Points to a wrong operating procedure which may lead to damage of the edger or to injury to the operator.

TIP

Points to a special feature or to a convenient operating procedure.

•

•

•

•

•

•

•

•

•

Please note that the machine is connection to an electrical power outlet with the same voltage as indicated on the machine identification plate. The edger must properly grounded according to local electrical safety standards. Never cut or bend the ground pin of the power cord plug denying the machine proper grounding. Never use a plug adapter which bypasses the grounding lead of the power cable Please never tamper with the electrical wiring and its’ connections of the edger or its’ accessories (coolant tank). Any change will impair the electrical protection features. Defective fuses may not be repaired or bridged but MUST be replaced with fuses of the same value and type. Before cleaning and maintenance to the edger switch the power OFF. After replacing the grinding wheels always check that the screws are properly tightened. Never switch the edger on during a cleaning or servicing operation. Be aware that ingesting of some medicines impair vision and reaction capability which may cause machine operator error. Always observe the safety and health regulations of the workshop. For increased protection against electrical shock it is recommended to use an electrical outlet with a ground protection breaker for the edger and ancillary devices.

Specific Purpose •

•

•

•

This machine is built for the exclusive use as an ophthalmic lens edger. Other objects such as hand tools etc. may under NO circumstances be ground or sharpened with the grinding wheels. Never operate the edger in areas where there is danger that water or other liquids may enter the electrical compartment of the machine. The edger must always be placed on a solid surface with a base strong enough to support its’ weight. This to prevent damage to the edger and to prevent the machine from tipping over possibly causing injury. The air flow slots in the edger are for ventilation so the machine will run at the correct operating temperature.

The connection cables must be laid in a protected area to prevent operators from tripping over the cables.

4

•

•

Do not attempt to open the edger or to repair it yourself. There is always the danger of short circuits and electrical shock with danger to personal safety. Do not operate the edger with the lid of grinding chamber open. Small flying particles may cause injury to the eyes or skin.

During the following instances the edger must be unplugged and shall not be used until the necessary repairs have been completed; − − −

− −

Plug o power cable defective Liquid has entered the electrical compartment of the edger Despite correct following of instructions the machine does not perform as designed Damage to the housing in case the edger was dropped. During obvious deviations from normal operation.

In addition to the instructions in this operating manual is it advisable to observe the generally observed accident prevention recommendations.

5

2 Warranty Conditions Automatic edgers

WECO extends to the original machine owner a warranty for its‘ products and services in accordance with our specifications against defects in materials and workmanship which are not the result of an incorrect operating procedure. The, to WECO returned products, which do not prove to be defective are considered to be test items for which a charge will be made in addition to the cost associated with the testing plus the transportation costs. The purchaser is not entitled entitled to make any other claims as a result of defects in the products, specifically regarding the cancellation of contracts or contractual or non-contractual claims for damage. See below for warranty period. WECO shall not be liable for defects in material that were not visible during the manufacturing process. Unauthorised changes or changes made by unauthorised personnel will void the warranty. The use of accessories, replacement parts as well as grinding wheels (diamond wheels) and consumables which have not been approved by WECO will void the warranty. WECO shall under no circumstances be liable to the purchaser in respect to damage or loss of any kind as a result of the use of WECO machinery, devices, grinding wheels and software. The warranty period is not extended if during the warranty period a repair is done. WECO guarantees the automatic edger for a period of 12 months from the time of installation, if the machine is used in accordance with the guidelines as described in the operating manual for an average use 8 hours on working days. Electrical Connection

The operator is responsible that the edger is connected to an electrical outlet with the correct voltage for the machine and all utility requirements are met for a safe operation. For the safety of the operator the edger must be connected to a with a circuit breaker protected outlet. Transportation Damage

Transportation damage is not covered by the WECO warranty. Thus: • The machine delivery is made at the consignee’s risk. Transportation damage must be reported immediately to the transportation • company. Damage compensation claims must be made to the transportation company • by the consignee. In all cases the products must be left in the packing and in the condition in • which the shipment was received until an authorised representative of the transportation company has examined the shipment

6

3 Description 3.1 General Information 1. Application

The purpose of an automatic lens edging machine lies in its’ task to edge lenses precisely, according to specific lens lay-out instructions, in such a way that these lenses can be mounted into an ophthalmic eyeglass frame.. 2. Lens types

With the C-91 automatic lens edger are we dealing with a machine capable of processing glass as well as plastic (CR-39) lenses The grinding of lenses is done “wet” The removed lens material is flushed from the grinding chamber with the coolant flow and settles at the bottom of the coolant tank. 3. Diamond grinding wheels

The automatic lens edger is fitted with highly precise WECO grinding wheels and selectively with a WECO “Speed-Wheel” roughing wheel which noticeably shortens the rough grinding time of plastic lenses 4. Control unit

The operating process is fully automatic and can be interrupted at any time by pressing the “red” STOP key. After pressing the STOP key the WECO grinding wheel assembly immediately separates from the lens. The WECO-CNC control unit together with the stored lens shape data create a true lens shape.. Depending on the type of edger, lens edging with a pattern is also possible. 5. Safety regulations

The automatic edger meets all general safety regulations and is CE and FCC certified. 6. This operating manual is applicable for:

W 2-D

1090-XXXX

The presence of a FormTracer with a W 2-D edger is a minimum requirement to make a complete lens edging cycle with tracing, lens lay-out, blocking and edging possible. The use of a computerised lens centering / blocking device e.g. a CAD2000 is recommended. The W 2-D can be operated without additional peripheral devices, however a conventional lens lay-out / blocking device can be used. The W 2-D automatic edger can be upgraded to patternless operation, at any time, with existing WECO-CNC-computerised devices. For further information contact your WECO product adviser.

7

(1) (1)

8

Operating panel Grinding chamber lid

(1) (1)

Mechanical bevel controller Lens fitting-foil cutter (Option)

15 8 7 9

6

10 11 12

5

13 14

(5) (5) (5) (5) (5) (5)

Lens clamp plunger CL port ESS (dedicated connected) port Spare Power cable socket ON / OFF switch

(5) (5) (5) (5) (5)

Fuses Pump power cable socket Transportation safety bolt Machine I. D. shield Bar-code reader connection port

9

(16) (16) (16) (16) (16) (16) (16) (16) (16) (16) (16) (16) (16)

10

Job number display " Polycarbonate " key (Option) “Left” lens key “Glass / Plastic” selector key “Right" lens key Size indicator " NEW JOB " key “ # “ function key " WECO " key “Grinding wheel front ! back positioning” keys “Grinding wheel right ! left positioning” keys “Lens rotation” key " START " key

(16) (16) (16) (16) (16) (16) (16) (16) (16) (16) (16) (16)

" STOP " key " BREAK " key " Step edging / Continuous edging " " FINISH " key (Re-edging) " Flat-bevel” selector key " Polish” key (Option) " guided V-bevel" key " Free- floating” V-bevel key “ Pattern” key " C " (clear entry) key " ENTER " (confirm entry) key Number pad

3.2 Technical data Voltage ⇐

Information on machine ID plate (14)

The voltage: 230 V / 50 Hz; 115 V / 60 Hz other voltages upon request. W 2-D (Type 1090)

14

Voltage

Cycle

Nominal rating

230 V 115 V 100 V 100 V

50/60 Hz 60 Hz 60 Hz 50 Hz

6,9 A 13,6 A 13,7 A 14,5 A

Nominal power consumption WECO coolant recirculation system 140 W. Main motor rating:

⇐

11

550 W

Fuses (11)

T4A T4A Pump T15 A Main fuse (USA) T15 A Main fuse (Europe) TIP • • •

T = slow blow fuse mT = medium slow blow fuse A dedicated electrical circuit for the edger is recommended.

See guarantee conditions: Power hook-up.

Measurements and Weights

Edger: Width: Depth: Height: Weight:

450 mm 420 mm 470 mm 50 kg

Coolant recirculation system: Width: Depth: Height: Weight:

320 mm 430 mm 280 mm 6 kg (without coolant)

11

Sound level

Device:

W 2-D

Measuring device:

Brüel & Kjaer Type 2233

Standard:

dB/A

Measuring Conditions:

horizontal distance = 1m vertical distance = 1,15 m

Rough edging:

Glass Photochromic glass CR 39 Hi Index Polycarbonate

= 74/78 dB/A = 75/80 dB/A = 68/70 dB/A = 69/72 dB/A = 75/78 dB/A

Finish edging:

Glass Photochromic glass CR 39 Hi Index Polycarbonate

= 62/65 dB/A = 62/67 dB/A = 59/60 dB/A = 59/60 dB/A = 67/71 dB/A

Equipment

12

Control unit:

WECO CNC

Lens clamping:

electric motor, pneumatic (option)

Wheel release:

automatic

Edging program:

fully automatic with memory function

Bevel controller:

free floating V-bevel or mechanical bevel curve control.

Lens size setting:

digital size setting and quick size change keys

Edging pressure:

- constant on the W 2-D - automatically adjusted on the W 2-D, independent of the lens size, reduced pressure when processing CR-39

WECO Grinding wheel combinations

TIP •

Grinding wheel diameter ø 110 mm

⇐

Three wheel combination with “Special-V” / flat bevel wheel (Standard)

a b e

e

b

a

⇐

a b c d

d

c

- Roughing wheel (glass) - „Speed-wheel” roughing wheel for plastic lens materials and / or polycarbonate (option). - “Special-V” - / Flat bevel wheel

b

Four wheel combination (Standard) - Roughing wheel (glass) - „Speed-Wheel"-roughing wheel for plastic lenses and / or polycarbonate (option) - „Special-V“-bevel wheel - Flat- / micro bevel wheel combination

a

Lens sizes (valid for flat bevels)

largest lens: smallest lens: - Lens depth:

= 90 mm = 21 mm

Lens sizes (valid for V-bevels)

largest lens: smallest lens:

= 90 mm = 23 mm

Lens materials

- Glass - CR 39 and Hi-Index plastic lens materials - Polycarbonate(Optional)

13

EC-Conformity Declaration according to the EC guide line for machinery 89/392/EWG, App. II A last revision by RL 93/68/EWG Name of the manufacturer Address of the manufacturers:

Wernicke & Co. GmbH

Jägerstrasse 58 - D-40231 Düsseldorf

We hereby declare, that the product Product description:

Lens edge grinding machine

Type:

W 2-D

Product identification:

1090

meets the following guide lines: EC-Machinery guide line 89/392/EWG - App. 1 last revised by: RL 93/68/EWG Test site:

TÜV - Rheinland Sicherheits und Umweltschutz GmbH Certificate No. 941115701

EC-low voltage guide line 73/23/EWG EC-electro magnetic radiation acceptability 89/336/EWG Applied harmonising standards in particular

Applied national technical specifications in particular

EN 6020-1/11.85 EN 50081-1:1992 pr EN 50082-2:1992

DIN VDE 0160/05.88 DIN VDE 0113 part 1/02.86 DIN VDE 1000/03.79

For the correct operation of the machine follow the tips and instructions in the operating manual. With changes made to the machine, other than those approved by WECO, this declaration loses its’ validity. Düsseldorf, 25.10.1995

......................................... Quality Assurance

14

3.3 Equipment and Accessories 1. Standard Accessories No.

Description

Quant.

Order-No.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

O-Ring 70x7 Allen key, 6,0 mm Allen key, 1,5 mm Allen key, 2,0 mm Allen key, 2,5 mm Allen key, 3,0 mm Allen key, 4,0 mm Allen key, 5,0 mm Spanner, 17/13 mm Spanner, 13/10 mm Spanner, 8/10 mm Screw driver Fuses, 220-240 V, T 4A Fuses 220 V, T 5A Universal adapter, large Universal adapter, small Slip-on sleeve, large Slip-on sleeve, small Back-up ring, large Backup ring, small Gear clamp 20 SP 12-20 Starblock large white (12 pieces) Starblock small, white (6 pieces) Block-up pads (20 pieces) Dressing stick, white Dressing stick, green Dressing stick (disk) red Coolant supply hose Coolant drain hose Coolant flow control valve

1 1 1 1 1 1 1

3102-0458 3801-0307 3801-0301 3801-0302 3801-0303 3801-0304 3801-0305 3801-0306 3801-0103 3801-0102 3801-0106 5910-3009 3566-0244 3566-0245 2001-1056 2001-1066 2001-3214 2001-3224 2001-3204 2001-3205 3583-0201 2001-3223 2001-3224 5020-3001 5997-3007 5997-3003 5997-3009 3651-0110 3651-0125 1090-1182

1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1

2. Optional accessories

Coolant system with disposal filter for CR 39 and glass Coolant system recirculation pump Solenoid valve for direct water hook-up Half-eye-Set WECO Coolant additive with de-foamer WECO plastic bag for coolant system Bar-code labels WECO Block-paddy Uncut lens fitting foils Accessories to process polycarbonate lenses

1075-0030 1075-0001 NE 1018-1021 2001-1011 5998-3027 5999-1008 2012-3001 1088-0050 2005-1003 1090-1390

15

2 3

4 5 7

8

30 6

1

13 14

27 26

9 10

25

11 12

18

16

15 17

20 23 16

24

22

21

19

4 Start up 4.1 Unpacking and Installation 1. Unpacking the edger

a

⇐

Cut the strapping (a), remove the adhesive tape and the staples.

−

After opening the box remove the carton liner (b).

b

−

c

CAUTION • Do NOT lift the edger by its’ housing.

Lift the edger with two people from the box, using the carrying straps on the plywood shipping board (c).

Tip the edger including the shipping board and lay it carefully on its’ back on a soft surface.

−

Remove the four bolts from the shipping board while supporting the edger.

−

⇐

The four leveling feet stay in the edger base.

2. Preparing machine table

CAUTION Install the edger always on a stable and vibration free stand or bench.

•

If no WECO-machine table is available, a solid work bench with a plastic laminate top will do.

−

Provide for adequate space under the bench for the coolant re-circulation tank. No benches with drawers and pay attention to cross supports under the bench top which could prevent easy passage of the coolant hoses.

−

Transfer the sizes and the locations of the holes for the hoses to the bench top.

⇐

−

Drill the holes for the drain hose (b) and the coolant supply hose (a)

17

3. Removing the transportation safety bolt −

Place the edger in its’ prepared place.

CAUTION •

⇐

Do NOT yet the plug in the edger. If the edger is switched ON, with the safety bolt still in place, damage to the edger WILL occur. Remove the cover (13) from the tapped hole of the transportation safety bolt.

⇐

Remove the transportation safety bolt (13) with an Allen wrench.

−

Replace the cover.

13

TIP •

⇐

When moving the edger the grinding wheel assembly must always be secured in place with the transportation safety bolt. This precaution also applies when moving the edger inside the lab. The transportation safety bolt (13) is stored by turning the bolt in the tapped hole in the front side of the automatic edger.

13 ⇐

⇐

18

Loosen the thumbscrew (A) and remove the transportation bracket (B) (only on W 2-D edgers).

Install the 40 mm ( C ) idler pattern and secure firmly with the thumbscrew ( A ).

4. Installing the coolant re-circulation system

k g f h i

⇐

e d c b a

l

Components of the coolant re-circulation system

(a) electric pump (b) plastic bag (c) coolant tank (d) tank lid with pump (e) quick connect (f) supply tube (g) barbed hose nipple (h) water valve (i) drain tube (k) drain reducer (l) electrical plug-in TIP •

−

− −

9

− − −

10

−

−

11

−

The electric pump (a is automatically switched on by the control unit of the edger at the start of the edging cycle. Place the plastic bag (b) in the coolant tank (c). Wrap the bag over the rim of the tank. Fill the coolant tank (c) to about 3 cm (1 1/4”) from the edge with water. Add about 150 ccm (1 cup) WECO coolant additive Place the lid with the pump on the tank. Push the male end (e) of the quick connect in the coolant supply hose (f) Connect the quick connect (e) Slide back the slip ring, Insert the male end with the hose, Release the slip ring, Connector locks in place. Slide the coolant supply hose (3) over the barbed hose nipple (g). Insert the water valve (h) in the middle of the coolant supply hose (f).

CAUTION

12

•

The coolant must freely flow back to the tank. If necessary shorten the drain hose.

Fasten the drain hose (i) to the drain hose reducer (k) and push the drain reducer onto the edger. Secure the coolant supply hose (g) with the gear clamp. − Guide the pump power cord from the top through the hole in the bench. − insert the pump cable in the socket in the lid of the coolant tank. − Lock the safety clip of the plug socket. −

TIP •

In exceptional cases the edger can also be connected directly to a water supply line.

•

With this application a solenoid valve (optional accessory) with a pressure reducer is recommended (Installed by a plumber).

•

The solenoid is connected as a coolant re-circulation system.

•

Consult with local authorities regarding the disposal of lens grinding waste materials.

•

To prevent contamination of the water drain pipes a separate drain with a plaster waste trap is highly recommended.

Because of the very high water usage this type of connection is, with concern for the environment, NOT recommended.

19

For the sake of environment!

WECO has a device in its’ product line which meets the requirements of the modern optical shop operation in connection with an environmentally responsible disposal of lens grinding waste as well as protecting the lens surface quality against scratches during lens edging. The WECO pressure filter coolant re-circulation system supplements the WECO CMS and as a result makes the system more complete. The WECO pressure filter coolant re-circulation system is especially developed for use in the optical lab. and distinguishes itself in particular for the following reasons: •

effective filtering with a waste separation rate of 99.9% preventing lens surface damage by friction of lens material particles.

•

Compact, fits in any commercially available machine.

•

System independent, may be connected to any other brand of automatic edger.

•

Easy to maintain. The filtering cartridge can be replaced without spilling lens grinding waste.

The WECO pressure filter coolant re-circulation system can be ordered under product number 1121-1001.00. For further information contact your WECO representative.

20

5. Leveling the edger

CAUTION •

⇐

A

Careful leveling the edger in both directions is a primary condition to achieve perfect lens edging results. Adjust the four leveling feet in such a way that the edger stands level in the “B” and “A” direction.

B B

⇐

With the edger switched OFF the grinding wheel assembly may NOT slide to one side or the other by itself. The machine needs to be leveled in the “B” direction so that the wheel assembly stays in any position.

21

4.2 First test run CAUTION

9

•

•

10

Before lens edging is switched ON make sure that the transportation safety bolt for the grinding wheel assembly has been removed. If necessary, remove the bolt. For instructions see par. Unpacking and Installation.

Starting the automatic edger

11

⇐

Switch the edger ON (10). After the edger has completed its’ self-check, the size display reads " 0 40.0".

12 ⇐

⇐

Clamping a lens, also see par. Block-up System

Press the "START" (28) key. The edging program completes automatically. Check coolant supply and drain hoses for leaks.

CAUTION

28

•

Switch the edger OFF immediately if it is not working as expected.

•

Risk of injury: Never put your hands into the grinding chamber while the

grinding wheels are still turning.

a

22

⇐

If necessary, adjust the position of the coolant nozzles (a) after the diamond wheels stop turning.

4.3 Connecting CMS-units Place the CMS-units in-line with the work flow of the optical workshop. Place all CMS-units in such a way that they can be operated conveniently. The number of CMS units which can be connected together depends on the system manager / memory card: memory card SM 20: 3 units memory card SM 100: 3 units memory card SM 200: 5 units When operating more than 3 CMS-units changes in the factory address setting will be necessary. In this case ask WECO After-Sales Service for assistance. In case a personal computer with the OPTOLAB IV program (or other software) is used, the number of units that can be connected hardly has a limit. The mini-CAD centering / b locking device is not counted as a CMS-unit as it does not require a separate address. When a SM memory card is used all CMS-units can be operated by more than one person simultaneously (multitasking function). The CMS-units can be set-up in any order you like depending on the available space and the work flow of the workshop; the following presentation is just an example.

⇐

Connect WECO CMS-units according to the diagram to the "CL" ports.

CAUTION

6 a

b

•

Do NOT link the first CMS-unit with the last one.

⇐

Secure the connectors with screws (a) to the ports.

Communication Check − − −

Switch ON all the units. Trace a lens shape with the FormTracer. Call-up the shape at the CAD-e or CAD2000 and at the W 2-D edger.

After a successful installation the shape will be visible on the LCD screen of the CAD and the W 2-D edger will grind a true shape and exact size lens. TIP •

Information messages will appear in case data communication is interfered with. see paragraph “Error Messages.

Installation of a mini-CAD (Order-No. 1119-0800.91) ⇐

b

6

24

Connect the mini-CAD with plug (b) to the for mini-CAD port (6) on the W 2-D and secure the connector with the screws.

4.4 Block-up System WECO Block-up system

(a) (a) (a) (a) (a) (a)

a b c

d

Starblock adapter Starblock Blocking pad Lens Clamping pad Swivel adapter

e f

Clamping elements

Large lens clamping adapters for most common frames. Smallest possible lens diameters with large clamping elements: Lens size with V-bevels: Lens size with flat bevels:

28 mm 27mm

Large clamping elements for “half eyes” and children’s frames. Smallest possible lens diameters with small clamping elements: Lens size with V-bevels: Lens size with flat bevels:

23 mm 21 mm

CAUTION •

Never use a large STARblock adapter together with a small swivel joint (or

vice versa) as this may result in lens breakage or lens surface damage.

WECO Swivel joints

f1

f2

Swivel joint, large (f2) Swivel joint, small (f1) Swivel joints automatically follow the angle of the back curve of the lens giving better support to the back-up ring.

25

WECO Clamping pad

e1

e2

Clamping pad, large (e2) Clamping pad, small (e1) Before clamping, the clamping pads must must be placed in the matching swivel joint. The notches in the adapter must lock into the clamping pad. WECO clamping pads are covered with a specially impregnated leather layer to provide maximum protection against surface damage and lens slippage. TIP • •

Always keep the clamping pads wet. Clamping pads are wear parts and need to be replaced from time to time.

WECO STARblock adapters

a1

a2

STARblock adapter, large (a2) STARblock adapter, small (a1) The teeth of the STARblock adapter of the WECO Block-up system offer maximum protection against “off axis” and lens slippage problems. The pin aligns the block and assures the operator that the lens is clamped correctly.

WECO Blocking pads

c

b1

WECO blocking pads (c) give certainty that the lenses are held firmly without slippage. The blocking pads are cleanly removed from the lens and Starblock. WECO Optical Machinery ONLY recommends to use of WECO blocking pads. If blocking components other than WECO recommended products are used, the performance of the CMS-system cannot be guaranteed. TIP • • •

•

26

Starblocks and lenses must be dry and free from dust and grease. Blocking pads are designed to be used only once. When working with small Starblocks the blocking pads may have to be cut to the correct size. Blocking pads must be stored away from heat.

WECO STARblocks

STARblocks, large (b1)

b2 b1

STARblocks, small (b2) WECO STARblocks are made with a soft material that will conform to the front curve of the lens. The teeth protect against lens slippage and breakage. The alignment hole together with the alignment pin in the STARblock adapter assure the operator that the lens is clamped correctly. TIP •

•

WECO Starblocks are wear parts parts and have to be replaced from time to time. Before lens blocking, the STARblocks must be clean and dry.

WECO “Block-Paddy” (optional) Order Number 1088-0050

With the WECO “Block-Paddy” lenses can be de-blocked safely and easily.

Lens clamping ⇐

Lift the grinding chamber chamber cover (2).

⇐

Pull the lens clamp slide (5) to the right and hold it.

5 2

⇐

⇐

Slide the swivel joint with the appropriate clamping pad onto the right lens drive shaft. Place the corresponding STARblock adapter on the left lens drive shaft.

NOTE

A

B

• •

•

The ridge (arrow) on the STARblock adapter must face to the front. The driver pins in the lens drive shaft must seat securely in the notches of the swivel joint and of the STARblock adapter. Daily clean the STARblock adapters and the swivel joints. Lightly grease the lens drive shafts. This will make adapter changes easier.

27

⇐

Place the blocked-up lens in the STARblock adapter.

CAUTION

•

The teeth must lock exactly. The alignment pin of the STARblock adapter must fit exactly into the hole in the STARblock.

⇐

Release lens clamp slide (5).

⇐

Close the grinding chamber cover (2).

•

NOTE

5 2

28

•

The actual clamping pressure is provided electrically at the beginning of the edging program.

4.5 Moving the edger NOTE •

⇐

Always make sure that the transportation safety bolt is in place whenever the edger is moved, even if it is only moved within the workshop. Remove transportation safety bolt (13) from the threaded hole on the front of the edger.

13

⇐

Remove cover on the right side of the edger.

−

Switch the edger on.

−

13

Move the grinding wheel assembly as much to the front as possible by pressing the down arrow key (25) ".

−

Switch the edger OFF.

−

Pull the power cord

−

Push the grinding wheels as far back, by hand, as possible and hold it until the transportation safety bolt can be pushed in.

CAUTION •

⇐

Do not reach into the grinding chamber as long as the grinding wheels are still turning. Screw in the transportation safety bolt (13) by moving the diamond wheel unit.

⇐

−

Remove all cable and hose connections.

−

Tip the edger backwards and remove drain reducer from the bottom.

−

Put cover for the transportation safety bolt back in place.

29

5 Operation Procedures 5.1 Systematic operating sequence with CAD 2000 (or CAD-e) ⇐

Enter a job number at the FormTracer.

⇐

Trace an eyeglass frame.

⇐ ⇐

Enter the job number in the lens lay-out blocker e.g. CAD 2000. Enter the lens lay-out data. Block the lenses with WECO STARblocks and blocking pads.

TIP •

The WECO Block-up System guarantees the optimum performance of each of the individual CMS system components.

⇐

Enter the job number at the W 2-D edger.

⇐

Edge the lenses.

⇐

De-block the lenses with the WECO Block-Paddy.

⇐

Safety bevel the lenses with the WECO 590 hand edger.

TIP •

30

The operating sequence may vary according to the different machine types.

5.2 Lens lay-out with edger and MiniCAD (Order-no.: 1119-0800-00) 1. In general

MiniCad and Centering Modul are optional parts and not included in the standard equipement. With edgers two different lens lay-out methods can be selected. These two methods are basically different. Please read the following paragraph of the instructions carefully and then edge a pair of test lenses. ATTENTION •

Always use only ONE of the two lens lay-out methods. Decenter either the lens OR the pattern but never both, otherwise the eyeglasses will not be correct.

2. Lens lay-out procedure “lens decentration” (passive)

This procedure is suitable for all Rx work. ⇐

The lens is decentered.

⇐

The Starblock is placed in the geometrical centre of the lens shape

⇐

The edged lens when the procedure “lens decentration” is used.

31

3. Lens lay-out procedure “pattern decentration” (active)

This procedure is suitable for all “regular” Rx work, in particular for heavy plus lenses and Superlenti lenses. This procedure is not suitable for half-eyes and for Rx work whereby the Starblock comes too close to the edge of the lens. The block position is checked by the lay-out program and a corresponding warning message is issued. ⇐

⇐

⇐

The pattern is decentered With single vision lenses the Starblock is placed in the optical centre of the lens, with multifocal lenses the location of the Starblock is determined by the values of “e” and “t” (nominal optical centre)

The edged lens when the procedure “pattern decentration” is used

4. Operating procedure overview ⇐ ⇐ ⇐ ⇐ ⇐ ⇐

Enter the lens lay-out data at the keypad of the ZET-90 Select the lens lay-out method at the end of the data entry The shape and centration point is displayed on the screen of the miniCAD Align the uncut lens on the miniCAD Verify lens “cut-out” of the uncut lens size on the screen of the miniCAD Block-up the lens with the miniCAD

TIP •

The data entry can be cancelled or reverted to the previous data entry field with the < C > (38) key

5. Factory set lens lay-out menus ⇐

Select the lens lay-out menu for single vision and progressive lenses (Factory setting) by pressing the "+/-" key (40) on the keypad

pr / pl y'r / y'l b

32

Monocular PD (Distance) Height to the lens’ edge at the PD (Z) DBL

⇐

Select the lens lay-out menu for multifocal lenses (Factory setting) by pressing the "+/-" key (40) TWICE on the keypad

pr / pl h'r / h'l b b' e t

Monocular PD (Distance) Segment height to the lens’ edge at the PD (Z F DBL Segment width Segment inset Distance top of segment to optical centre

33

6. For additional lens lay-out menus (Ask WECO After Sales Service) ⇐

Single vision and progressive add lenses

ur / ul vr / vl

Horizontal decentration from the geometrical centre Vertical decentration from the geometrical centre Decentration IN and UP have plus values. Decentration OUT and DOWN have minus values

pr / pl yr / yl b

Monocular PD (Distance) OC (Z) height (box measurement) DBL

Multifocal lenses

⇐

34

pr / pl hr / hl b b' e t

Monocular PD (distance) Segment height (box measurement) DBL Segment width Segment inset (difference between distance-,and near-PD) Segment drop from optical centre (ZF to the top of segment)

qr / ql hr / hl b b' e t

Monocular PD (near) Segment height (box measurement) DBL Segment width Segment inset (difference between distance-, and near PD) Segment drop from optical centre (ZF to the top of segment)

qr / ql h'r / h'l b b' e t

Monocular PD (near) Segment height to the lens’ edge at the PD Z F DBL Segment width Segment inset (difference between the distance- and near PD) Segment drop from optical centre (ZF to the top of segment)

35

7. Single vision lens lay-out procedure “decenter the lens” (example) ⇐

⇐

Lens lay-out menus for single vision lenses are identified with one bar (see arrow) in the LED display

Press the <+/-> key

Read-out

⇐

⇐

Enter the monocular PD

Read-out

⇐

⇐

Press the < ENTER > key

Read-out

⇐

Enter the height of the optical centre as measured from the lens’edge at the (Without data entry optical centre on the 180 line) ⇐ Read-out ⇐

36

⇐


⇐

Read-out

⇐

Enter DBL (without data entry the bridge size as measurement by the FormTracer will be used, if the feature is activated

⇐

Read-out

⇐

Press the key

Read-out

⇐

Select the lens lay-out method: "Decenter the lens": Enter "1"

Default setting

"Decenter the pattern": Enter "0"

⇐


⇐

Read-out on the miniCAD LCD monitor

⇐

Place the uncut lens on the lens supports (a)

⇐

Insert the Starblock with a blocking pad into the adapter (b)

⇐

⇐

Look through the eyepiece (e) and align the optical centre of the uncut lens with the dotted cross

Align the lens and verify if the lens will “cut-out” (Arrow)

37

⇐

⇐

⇐

Press down the blocking arm (d) Press down on the block adapter knob (c), while holding the lens in place with the other hand

Press the < L > key on the edger and repeat the procedure for the left lens.

TIP •

38

The lens lay-out data are transferred for the left lens. New lens lay-out data only need to be entered when the PD, the height of the optical centre, fitting cross or the seg. height differs from the right lens

8. Multifocal lens lay-out procedure “decenter the lens” (example) ⇐

Multifocal lens lay-out menus are identified with the two vertical bars (arrow) in the LED screen

TIP

With the < +/- > key this entry field can be toggled back and forth between the single vision and multifocal lay-out menus

•

⇐

Press the <+/-> key 2x

Read-out

⇐

⇐


Read-out

⇐

⇐


Read-out

⇐

⇐

Enter the seg. height, as measured from the lens’ edge below the optical centre (thus not the middle of the segment.

Read-out

⇐

⇐


Read-out

⇐

⇐

Enter the DBL value (without data entry the bridge size as measurement by the FormTracer will be used, if the feature is activated)

Read-out

⇐

⇐


39

Read-out

⇐

⇐

Enter the segment width

Read-out

⇐

⇐


Read-out

⇐

⇐

Press the < ENTER > key (Accepts the default reading seg. inset)

Read-out

⇐

⇐

Press the < ENTER > key (Accepts the default value)

Read-out

⇐

Select the lens lay-out method: "Decenter the lens": Enter "1" "Decenter the pattern” Enter "0"

40

⇐


⇐

miniCAD LCD monitor read-out

Default setting

⇐


⇐

Insert the Starblock with the blocking pad in the adapter (b)

⇐

⇐

⇐

⇐

⇐

Look through the eyepiece (e) and align the reading segment with the segment locating / alignment lines

Align the reading segment of the uncut lens with the segment locating / alignment lines (arrow) and verify if the lens will “cut-out” (arrow)


Press the < L > key on the edger and repeat the procedure for the left lens

TIP •

The lens lay-out data are transferred for the left lens. New lens lay-out data only need to be entered when the PD, the height of the optical centre, fitting cross or the seg. height differs from the right lens

41

9. Single vision lens lay-out procedure “decenter the pattern” (example) ⇐

⇐

Single lens lay-out menus are identified with the one vertical bar (arrow) in the LED screen

Press the <+/-> key

Read-out

⇐

⇐


Read-out

⇐

⇐


Read-out

⇐

⇐

Enter the seg. height as measured from the lens’ edge at the PD

Read-out

⇐

⇐


Read-out

⇐

⇐

Enter the DBL value (Without this data entry the by the FormTracer measured DBL value will be used, if the feature is activated).

Read-out

⇐

⇐

42


Read-out.

⇐

Select the lens lay-out method: "Decenter the lens": Enter "1"

Default setting

"Decenter the pattern": Enter "0"

⇐


⇐


⇐


⇐


⇐

⇐

Look through the eyepiece (e) and align the optical centre of the uncut lens with the dotted cross

Align the lens and verify if the lens will “cut-out” (arrow)

43

⇐

⇐

⇐

⇐


Edge the right lens, if necessary, re-edge immediately Press the < L > key on the edger and repeat the edging process for the left lens

TIP

The lens lay-out data are transferred for the left lens. New lens lay-out data only need to be entered when the PD, the height of the optical centre, fitting cross or the seg. height differs from the right

44

10. Multifocal lens lay-out procedure “decenter the pattern” (example)

⇐

Multifocal lens lay-out menus are identified with the two vertical vertical bars (arrow) in the LED screen

TIP

With the < +/- > key this entry field can be toggled back and forth between the single vision and multifocal lay-out menus

•

⇐

Press the <+/-> key 2x

Read-out

⇐

⇐


Read-out

⇐

⇐


Read-out

⇐

⇐

Enter the seg. height, as measured from the lens’ edge below the optical centre (thus not the middle of the segment

Read-out

⇐

⇐


Read-out

⇐

⇐

Enter the DBL value (Without this data entry the by the FormTracer measured DBL value will be used, if the feature is activated)

Read-out

⇐

⇐


45

Read-out

⇐

⇐

Enter the seg. width .

Read-out

⇐

⇐


Read-out

⇐

⇐

By pressing the < ENTER > key the default value is accepted

ATTENTION

Changing the "e" and "t" values influences the location of the blocking point.

•

Read-out

⇐

⇐

By pressing the < ENTER > key the default value is accepted

Read-out

⇐

Select the lens lay-out method: "Dec "Decen ente teri ring ng the the len lens" s":: Ent Enter er "1" "1" "Decentering the pattern": Enter "0"

46

⇐


⇐


Defa Defaul ultt set setti ting ng

⇐


⇐


⇐

⇐

⇐

⇐

⇐

⇐

Look through the eyepiece (e) and align the reading segment with the segment locating / alignment lines

Align the reading segment of the uncut lens with the segment locating / alignment lines (arrow) and verify if the lens will “cut-out” (arrow)


Edge the right lens, if necessary, re-edge immediately Press the < L > key on the edger and repeat the process to edge the left lens

TIP •

The lens lay-out data are transferred for the left lens. New lens lay-out data only need to be entered when when the PD,or the height of the optical centre, fitting cross or the seg. height differs from the right

47

5.3 Lens lay-out with FormTracer and MiniCAD (Order-no.: 1119-0800-91) FormTracer and MiniCAD are optional and not included in standard equipement. ⇐

⇐

Enter a job number at the FormTracer. Enter the lens decentration data (Also consult the FormTracer Operating Manual).

⇐

Trace the eyeglass frame.

⇐

Align the uncut lens.

⇐

Block the lens with WECO STARblocks and Blocking pads.

TIP •

The WECO Block-up System guarantees the optimum performance of each of the individual CMS system components.

⇐

Enter the job number at the W 2-D edger.

⇐

Edge the lenses.

⇐

De-block the lenses with the WECO Block-Paddy.

⇐

Safety bevel the lenses with the WECO 590 hand edger.

TIP •

The operating sequence may vary according to the different machine types.

5.3.1 Active lens lay-out (de-center the pattern) with the FormTracer 2D 1. Procedure overview ⇐

⇐ ⇐ ⇐ ⇐ ⇐ ⇐ ⇐ ⇐

Clamp-in a frame and enter the lens lay-out data via the FormTracer 2D keypad. Start the tracing cycle (also see the FormTracer 2D Operating Manual). Enter a job number e.g. 12 at the FormTracer and confirm by pressing 2 x the "ENTER" key. Press "+/-" key at the FormTracer. Enter the "u" value e.g. 2 and confirm with the "ENTER" key. Enter the "v" value e.g. 1,5 and confirm with the "ENTER" key. Align the uncut lens on the mini-CAD screen. Check if the uncut lens is large enough for the job. Block-up lens with the mini-CAD.

TIP •

The lens is blocked on the mechanical centre (boxed centre of the lens shape)

Lens lay-out procedure

"u" - horizontal decentration from the mechanical centre of the lens shape. (“in” positive, “out” negative) "v" - vertical decentration from the mechanical centre of the lens shape. (“up” positive, “down” negative)

c d

e b f a

⇐

Select the right- resp. left-lens shape by pressing the ( f ) button.

⇐

Place the lens on the lens supports ( a ).

⇐

Insert the STARblock with blocking pad in the adapter (b).

⇐

View the lens through the alignment loupe (e) and align the optical centre of the lens with the dotted cross on the LCD.

49

⇐

c d

c d

50

e b f a

e b f a

Align the lens accordingly and verify that the edge of the uncut lens is outside the outline of the lens shape (arrow).

⇐

Pull down the blocking arm (d).

⇐

Press down the blocking plunger (c), while holding the lens in place.

⇐

Press the ( f ) button and repeat the procedure for the left lens.

TIP •

The lens lay-out values are transferred for the left lens. A new data entry is only then required when the lens decentration for the left lens is different from the right. In this case the frame needs to be re-traced with the FormTracer 2D.

5.3.2 Passive lens-lay out (De-centering the lens) with MiniCAD 1. Procedure overview ⇐

⇐ ⇐

Clamp-in a frame and start the tracing procedure (also see Operating Manual for the FormTracer). Enter a job number e.g. 12 on the FormTracer. Confirm by pressing the “ENTER” key 2 x.

Decentration procedure

"u" - horizontal decentration from the geometric centre of the shape. (decentration “in” positive, decentration “out” negative) "v" - vertical decentration from the geometric centre of the shape. (decentration “up” positive, decentration “down” negative)

c d

e b f a

⇐

Select the right side, respectively the left side with the button ( f ).

⇐

Place the lens on the lens supports (a).

⇐

Place the STARblock with the blocking pad in the STARblock adapter (b).

⇐

⇐

⇐

Align the lens by looking through the targeting magnifier (e) and position the lens according to the grid lines (1 mm division).

Example shows a right lens decentered “in” (u = 1,5 mm (u = +1,5 mm) and 2 mm “up” (v = +2 mm). Align the lens accordingly and verify the uncut lens size (see arrow).

51

c d

c d

52

e b f a

e b f a

⇐

⇐

⇐

Lower the blocking arm (d) Press blocking plunger © down, while blocking hold the lens in place by hand.

Press the < f> button and repeat the procedure for the left lens.

5.4 Roughing procedure (all bevel types) with patterns ⇐

9

Switch the edger ON (10).

After the self check the size indicator (16) shows " 0 40.0".

10 11

12 ⇐

By pressing the “Pattern” key (37) the pattern copying wheel moves to the back and allows for the pattern to be placed on the adapter. .

37 ⇐

⇐

For edging with a pattern replace the 40,0 mm round idler pattern with the appropriate shape (C) and secure with the thumbscrew (D) or with the quick clamp. When using patterns consider the lens side (right/left) Illustration depicts an example for the right lens.

TIP •

⇐

When operating as a CNC machine and during test runs NEVER operate the machine WITHOUT the idler pattern.

By pressing the “Pattern” key (37) again the pattern copying wheel moves forward.

37 53

⇐

If necessary the lens size may be changed by pressing the keys < 8 > (larger) or < 2 > (smaller) in 0.1 mm steps.

⇐

⇐

Open the grinding chamber lid (2). Clamp the blocked-up lens with the lens clamp slider (5) between the lens drive shafts.

TIP

5

•

2

⇐

⇐

⇐

The actual lens clamping force is applied at the start of the edging program.

The operator must check that the teeth of the STARblock and the teeth of the STARblock adapter properly mesh. The ridge on the STARblock adapter must face to the front. The roughing position of the plastic roughing or the glass roughing wheel can be changed before and during the roughing process with the "right/left” (26)" arrow keys.

Close the grinding chamber lid (2).

⇐

19

⇐

The edging program can be interrupted after the roughing cycle by pressing the "BREAK" (30) key. Press the “GP” (19) key for processing plastic lenses (e.g. CR-39) lenses.

The “plastic” roughing wheel moves to the required position. (Depends on the grinding wheel configuration)

26

TIP •

•

30 •

Plastic lens roughing wheels are NOT suited for processing polycarbonate lenses. Polycarbonate lenses require a special grinding wheel configuration (Option) Glass lenses CANNOT be processed on a roughing wheel for plastic.

Further procedure see bevel edging (Free- float/guided).

54

5.5 Roughing procedure (all bevel types) patternless operation ⇐

9

Switch the edger ON (10).

After the self check the size indicator (16) shows " 0 40.0".

10 11

12 22

16

⇐

Press the "NEW JOB" (22) key.

⇐

Enter the job number on the keypad (40).

The valid job number range depends on the type memory card. SM20: SM100: SM200: ⇐

1-20 1-100 1-234

job numbers job numbers job numbers

Press the "ENTER" (39) key.

The job number is displayed in the job number read-out (16) e.g. 234.

40

39 18

20

⇐

Select the right lens respectively the left lens by pressing the keys (20) resp. (18).

TIP for W 2-D users •

18

20

⇐

The 40 mm idler pattern must be mounted on the pattern adapter and secured with the thumb screw for patternless operation.

If necessary the lens size may be changed by pressing the keys < 8 > (larger) or < 2 > (smaller) in 0.1 mm steps.

⇐

The “safe edging mode” can be switched ON with the “9” key (Also see chapter 5.15 Special Cases.

55

⇐

⇐

5

⇐

Open the grinding chamber lid (2). Clamp the blocked-up lens with the lens clamp slider (5) between the lens drive shafts.

Close the grinding chamber lid (2).

2

⇐

⇐

⇐

The operator must check that the teeth of the STARblock and the teeth of the STARblock adapter mesh properly. The ridge on the STARblock adapter must face to the front. The roughing position of the plastic roughing or the glass roughing wheel can be changed before and during the roughing process with the "right/left” (26)" arrow keys.

TIP

19

•

The actual clamping force is applied at the start of the edging program.

⇐

Press the “GP” (19) key for processing plastic lenses (e.g. CR-39) lenses. The “plastic” roughing wheel moves to the required position. (Depends on the grinding wheel configuration)

⇐

26

TIP •

•

30

56

The edging program can be interrupted after the roughing cycle by pressing the "BREAK" (30) key.

Plastic lens roughing wheels are NOT suited for processing polycarbonate lenses. Glass lenses CANNOT be processed on a roughing wheel for plastic.

Further procedure see bevel edging (Free- float/guided).

5.6 Free-float bevel TIP •

The flat-bevel edging procedure requires that the lens has been rough ground to shape.

⇐

Press the “Free-float bevel” ( 33 ) key.

⇐

Press the “START" ( 28 ) key. The edging program completes itself then automatically.

28

⇐

The lens transfers automatically to the free-float bevel wheel.

The grinding wheel assembly moves to its’ home position at the end of the finishing cycle. CAUTION •

⇐

5

⇐

2 ⇐

Only open the lid of the grinding chamber (2) after the grinding wheels have come to a complete stop. Open the grinding chamber lid (2). Hold the lens and pull the lens clamping slider (5) as far to the right as possible. Remove the lens.

TIP •

•

The lens lift off position on the bevel wheel is still in memory. If re-edging is required, this procedure must be done immediately. See paragraph Operating procedure re-edging.

57

5.7 Guided bevel edging TIP •

• • •

This bevel type (35) is particularly well suited for high powered lenses and for lenses whose bevel placement is dictated by aesthetics or by the type of frame. Select the bevel type before the roughing cycle is started. Do NOT YET engage the bevel position controller. The guided bevel edging program operates with an automatic cycle interruption feature. If a program interruption is not desired then press the “BREAK” (30) key before the start or before the end of the roughing cycle.

35 ⇐

After the roughing cycle, the wheel assembly moves away from the lens and the assembly moves to the right. The edging program interruption follows, the coolant flow stops.

TIP •

⇐

3

The finishing wheel does not touch the lens, as long as the LED in the “BREAK " key is on.

Set the bevel location with the outside ( c ) ring and the bevel curve with the knob turning the inside ( a ) ring of the bevel controller ( 3

a CAUTION

b c

⇐

a=0

a = 0 ...8

TIPS ⇐

a

c

With the outside ( c ) ring of the bevel position controller the location of the bevel is set.

•

The red area of the scale: The bevel groove of the grinding wheel shifts to the left.

•

The white area of the scale: The bevel groove of the grinding wheel shifts to the right

⇐

•

58

At the end of the edging program turn the dials so that the arrows ( b ) of the outside- and inside ring are again placed in the position as illustrated (home position).

With the inside ( a ) ring the bevel curve is set according to the approximate curve of the lens. With the curve setting " 0 " (a=0) a straight running bevel is edged.

•

25

⇐

27

⇐

19

⇐

⇐

⇐

⇐

Check the bevel position and bevel curve by lightly scrape edging the lens: Press the lens rotation ( 27 ) key. (The lens turns) By pressing the "GP" ( 19 ) key the coolant flow can be switched ON and respectively OFF. With the arrow ( 25 ) keys the grinding wheels can be moved towards the lens until the lens is touched lightly. If required, change the setting of the bevel position and / or bevel curve.

Press the "BREAK" ( 30 ) key. The LED in the program interruption key goes off. The LED in the "FINISH" ( 32 ) keys lights up. The coolant starts to flow and the grinding wheel assembly moves toward the lens. The finishing cycle starts.

The edging program now completes itself automatically.

30 32 At the end of the finishing cycle, the grinding wheel assembly moves back to its’ home position. CAUTION •

Do not open the grinding chamber lid (2) until the grinding wheels sopped turning.

5 2

⇐

⇐

⇐

Open the grinding chamber lid (2). Hold the lens and pull the lens clamp plunger (5) as far to the right as possible. Take out the finished lens.

TIP •

•

The start position for finishing is maintained by the mechanical bevel position guide. Re-edging, if necessary must be done immediately See paragraph “Operating procedures, Re-edging”.

59

5.8 Flat bevel TIP •

•

The flat-bevel edging procedure requires that the lens has been rough ground to shape. If necessary the rough grinding position, on the glass or the plastic roughing wheel, can be changed before or during the roughing cycle with the grinding positioning (26) (arrow) keys. (

26 ⇐

Press the “Flat-bevel” ( 33 ) key.

⇐

Press the “START" ( 28 ) key.

The edging program completes itself then automatically.

28 33

⇐

60

The lens transfers automatically to the flat bevel wheel.

⇐

If necessary, the edging position may be changed during the finishing cycle with the “right/left” (26) positioning keys.

26 The grinding wheel assembly moves at the end of the finishing cycle to its’ home position. CAUTION •

Only open the lid of the grinding chamber (2) after the grinding wheels have come to a complete stop.

5 2

⇐

⇐

⇐

Open the grinding chamber lid (2). Hold the lens and pull the lens clamping slider (5) as far to the right as possible. Remove the lens.

TIP •

•

The lens lift off position on the bevel wheel is still in memory. If re-edging is required, this procedure must be done immediately. See paragraph Operating procedure re-edging.

61

5.9 Operating Procedure to re-edge a bevelled lens TIP

•

Bevel edging without rough edging is not possible. Do NOT remove the WECO STARblock after the lens has been edged the first time. Check the lens size first. Do NOT change the position of the guide when using the guided bevel.

⇐

If required, reduce the lens size in 0,1 mm steps with the number “2” key.

• •

•

TIP •

It is assumed that the size of the traced shape is the same as the size of the lens. If the size is changed on the edger by 1,0 mm or more, when using the guided bevel mode, the bevel position changes and will not give the results as expected. This condition also applies when lenses are reedged.

Start bevel edging. ⇐

Press the "FINISH" key. The edging program completes automatically.

62

5.10 Edging with cycle pause TIP •

•

•

The flat bevel and V-bevel edging programs complete themselves without interruption. An interruption in a program run must therefor be expressly entered. The bevel edging starting point, after a program interruption, is always at the bottom of the lens (270 degree position), regardless of how the lens had been rotated.

Program interruption applications: • • •

⇐

⇐

Bevel position observation when using the guided bevel mode. Scrape bevel edging to verify bevel position. Verifying the starting point for flat bevel edging..

Press the "BREAK" key before the start of the edging program or at the latest during the roughing cycle but before the edger reaches the finishing position..

Press the "BREAK" key to continue in the edging program.

TIP •

The program run can be ended at any moment by pressing the “STOP” key.

63

5.11 Lens-fitting foil TIP

The lens-fitting foil cutter (4) is an optional feature.

•

Conditions

First trace the lens shape with the FormTracer. Make sure there is no lens clamped in the edger. ONLY use flat against the support plate laying foil (see Special Accessories)

• • •

4

Cutting procedure for a lens-fitting foil. ⇐

Place the fitting foil tightly against the support plate.

⇐

22

⇐

When cutting the right fitting foil point the “N” to the front, conversely when cutting the left fitting foil point the “N” to the back.

Press the "NEW JOB" key Enter the job number via the key pad Press the "ENTER" key.

⇐

⇐

Select the right ( 20 ) or left ( 18 ) eyewire. When cutting the right fitting foil point the “N” to the front, conversely when cutting the left fitting foil point the “N” to the back.

39 24 ⇐

28

64

Starting the cutting process.

Hold down the " WECO " (24) key and in addition press the " START " (28) key.

⇐

The fitting foil is cut automatically

⇐

After the foil cutter has come to a stop remove the fitting foil ( 4 ).

Press the shape out of the cut foil.

4

5.12 Plastic lens polishing TIP •

The plastic lens edge polishing feature is an option.

Conditions ⇒

⇐

A special polishing wheel-set is necessary to polish CR-39 and polycarbonate lenses.

Press < P > (34) key before starting the edging program.

The program will then run automatically. This function stays on until the next job is called up. Re-edging AND polishing: Press key < FINISH > (32).

34

Re-edging, ONLY polishing: Hold down the < WECO > (24) key and in addition press< FINISH > (32) key.

65

5.13 Polycarbonate lenses TIP •

A special grinding wheel configuration is required to process polycarbonate lenses. The standard grinding wheels cannot process polycarbonate.

Conditions

17

⇒

Special grinding wheel configuration

⇐

Press the " PC " (17) key before pressing “Start”.

The edging program completes automatically. The function stays switched on until the next job is called-up. During the roughing cycle the coolant supply is switched off.. Only during the last revolution of the finishing cycle is the coolant flow switched on.

5.14 Keyboard programming 16 .

"Hot key" function

Frequently repeated keystrokes may be stored in the keyboard software, not un-like frequently called telephone numbers. A maximum of 9 keys between <1> and <9> can be programmed. A maximum of 30 key strokes may be stored under one number. ⇐

⇐

Simply press one of the keys <1> to <9> and the sequential key strokes will be executed. In case a string of commands is carried out, a dot appears in the left digit location of the job number display (16).

NOTE •

66

The key strokes stored under the “0” number key are excecuted automatically when the edger is switched ON.

How to enter key sequences

example: key <8> to decrease the lens size by 0.1 mm.

⇐

Call up learning mode. Size display shows: "LEARN"

⇐

Enter key <8>.

⇐

Confirm with the "ENTER" key.

⇐

Enter the desired key strokes.

⇐

Commit the keystroke sequence to memory.

End function.

⇐

How to delete keystroke sequences

Example: delete key sequence of key <8>. ⇐

Call up learning mode.

⇐

Enter number <8>.

⇐

Confirm with the "ENTER" key.

⇐

Commit to memory and end.

67

Factory settings

The following keys are programmed at the factory: key <8>

increase lens size by 0.1 mm

key <2>

decrease lens size by 0.1 mm

key <9>

soft touch grinding wheel approach speed

Key strokes which cannot be stored in memory:

"START", "FINISH", "STOP", "NEW JOB", "#", and the ARROW keys.

68

5.15 Calling-up a job with a bar-code reader (option) TIP •

Bar-code operation requires for each device a special configuration.

Conditions ⇒

Bar-code wand and accompanying electronic parts.

⇐

Switch the edger ON

⇐

Trace a frame

⇐

Move the bar-code wand of the edger across the bar-code label. A successful reading in indication by a signal. The job number appears automatically on the screen of the edger.

TIP •

•

The bar-code wand can be moved across the label from right or left and vice versa. The bar-code labels can be ordered under product number 2012-3001.

69

5.16 Special Cases 24

1. Spiral lowering (Soft touch grinding wheel approach) for large diameter thin plastic lenses

The approach speed of the grinding wheels toward the lens can be reduced. This feature reduces the changes of lens breakage and lens slippage. ⇐

By pressing the "WECO" (24) and "Spiral edging" (31) keys at the same time the “Spiral Lowering” feature is switched on

TIP •

“Spiral Lowering” can also be switched on by pressing the "9" key (Factory program setting) (Also see: Keyboard programming).

31 24

27 2. V- and Flat bevel edging on one lens ⇐

Eyeglass frames for which the lenses must be edged with a V- and a Flatbevel (for grooving) are delivered with two shape patterns. The pattern is centred, the second one de-centred. The centred shape is edged first with a V-bevel, then the same lens is edged the de-centred pattern for a Flatbevel. The FormTracer centres all patterns according the “box” system. It is possible to switch this automatic centring OFF and ON by pressing the key combination “CTL" and "OFFSET" at the same time. The job number display shows a dot in each position.

NOTE • •

For the second shape a new job number needs to be entered. ONLY switch this automatic centring OFF in these special cases, otherwise the optical centring will be wrong.

3. Clamping of strong prismatic lenses

Although the WECO universal adapter is well suited for prismatic lenses, it may be necessary to be built-up one side of the inside of the lens. For this purpose WECO block pads are well suited.

70

4. Lens shapes with the STARblock off the shape centre. ⇐

There are shapes whereby the STARblock cannot be placed in the geometric centre of the lens. Blocking this way would place the edge of the STARblock outside the lens edge. Measure how far the STARblock needs to be moved over before the lens can be edged. Enter the de-centration value (5 mm in and 3 mm up) as the de-centration before frame tracing. (Also see Decentration with the FormTracer 2-D) The shape is then de-centred by the entered amount. Calculate this amount with the required decentration for the prescription. Then block-up the lens accordingly.

71

6 Maintenance 6.1 Care of the edger TIP •

For the care and maintenance of the automatic edger use only original WECO grinding wheels, WECO replacement parts and consumables.

WECO automatic edgers have NO grease points. Please observe the by WECO recommended periodic cleaning intervals, then, even over time contaminated coolant will not harm the edger. At the end of the workday all rubber parts in the grinding chamber should be rinsed clean with water. The lens particles and grinding residues are removed and cannot cause blistering and damage the painted surfaces. Extended use of contaminated coolant causes calcium like built-up in the grinding chamber, which, by delayed maintenance contributes to premature wear and operating problems. Once these residues are present they can only be removed mechanically. This leads in all cases to damage to the seals and to the protective surfaces of the edger. CAUTION

•

By observing the cleaning interval damage to the edger will be prevented. Please follow our recommendations: Clean the edger daily. Clean the edger thoroughly weekly.

⇐

Remove grinding residues from the grinding chamber.

•

•

B

•

•

A

•

•

72

Carefully remove the grinding residues from the lower reaches of the gaiter (see arrow). Clean all parts that come into contact with coolant. Remove the clamping parts from the lens drive shafts, clean and grease lightly. Clean around the spray guard.

⇐

Clean the ends ( A ) of the lens drive shafts and grease lightly.

A

73

6.2 Grinding wheel care TIP •

•

•

•

•

•

Only sharp grinding surfaces guarantee short edging times, exact lens shapes and "first time fit" lenses. Dull grinding wheels may result in axis problems and broken lenses! An adequate coolant flow with WECO coolant additive improves the grinding performance and prolongs the life of the grinding wheels. Clean the grinding wheels ONLY when the edging times increase beyond an acceptable limit. Grinding wheels must be cleaned with coolant, the dressing sticks have to be soaked in water before hand. After cleaning the grinding wheels the grinding chamber and the cooling system should be cleaned and the coolant supply replaced.

WECO dressing sticks

a

c

b

WECO dressing sticks remove lens residue completely so that sharp diamond grains are brought to the surface, again giving top lens grinding performance. ⇐

WECO dressing sticks.

(a) white dressing stick, for finishing wheels (a) green dressing stick, for finishing wheels in case the white stick is not sufficient. (a) red dressing stick (disk), for glass roughing wheels only.

Rough grinding wheel for glass ⇐

c

74

b

a

The WECO W 2-D has a 15 mm wide roughing wheel (a). This allows for easy and safe edging even of heavy minus lenses.

⇐

a b

⇐

⇐

Take the pressure pad ( b ) out of the swivel joint ( a ) on the right lens drive shaft. Allow the dressing tool ( c ) to absorb water Clamp the red dressing disk ( c ) for glass roughing wheels into the lens clamp like a lens.

c

⇐

⇐

Clamp in the round 40.0 mm idler pattern. Set the lens size to 80 mm. (Assuming that a new round dressing disk is used)

⇐

Select “flat” bevel.

⇐

Press the program interruption key “BREAK”, press “START” key.

⇐

⇐

Move the grinding wheel assembly right / left so that the grinding disk stays in contact with the glass roughing wheel. Stop the procedure at the end of the roughing cycle.

TIP •

•

Assure that the coolant flow is adequate. The dressing disk can be used more than once. Reduce the size of the edger roughly 10 - 20 mm every time this procedure is done.

Rough grinding wheel for plastic (CR-39) - "Speed Wheel" ⇐

The rough grinding wheel for plastic ( b ) must only be used for edging plastic lenses (CR-39 or high-index plastic lenses).

TIP •

d

c

b

a

•

•

Glass or polycarbonate lenses cannot be edged on this rough grinding wheel. Polycarbonate lenses may be processed with an optional polycarbonate grinding wheel and coolant system. No cleaning necessary. The plastic roughing wheel must never be cleaned with dressing disks or sticks.

75

Finishing wheel “free floating bevel” ⇐

The special V-bevel wheel ( c ) is used for “free-float” bevel edging. The sharp corners of the groove and bevel sides control the “free floating” bevel position. Timely cleaning of the wheel is recommended. It is usually sufficient to clean only the right side of the bevel groove.

d

c

b

a

⇐

⇐

⇐

⇐

⇐

⇐

Clamp in the round 40.0 mm idler pattern. Set the lens size to 80 mm. (Assuming that a new round dressing disk is used) Select “flat” bevel. Press the program interruption key “BREAK”, press “START” key. Wait for cycle interruption. Start the coolant flow by pressing the “GP” key. Moisten the white dressing stick and by short bursts of pressure clean the RIGHT side of the bevel groove of the bevel wheel ( a ).

TIP •

•

•

a

⇐

If the dressing stick is still too wide reduce it by running it over the roughing wheel for glass. Under NO circumstances use the red dressing stick on a finishing (bevel) wheel. If no satisfactory results can be achieved, first check the free right / left movement of the grinding wheel assembly as well as the levelling of the edger with the power switched OFF. Only if these two conditions check out satisfactorily dress (clean) the bevel wheel with the green dressing stick.

End the process. Check the bevel position by edging a test lens in the “free-float” bevelling mode. If necessary, repeat the procedure.

76

6.3 Replacing WECO grinding wheels 9

TIP •

10 11

The replacement of a four WECO grinding wheel assembly is illustrated. The procedure for replacing of a three wheel- or a two wheel-WECO grinding wheel assembly is in principle the same.

⇐

Switch (10) the edger OFF

⇐

Pull the plug (9).

⇐

Remove the swivel nozzles ( a ) of the coolant supply.

12 a

TIP

c

a b

•

After re-assembly re-position the swivel nozzles.

⇐

Remove the clamping ( d ) parts.

⇐

−

Remove the spray guard ( a ) of the wheel assembly after loosening the screws ( b ). Check the gaiter (2) for rips and leaks. In case of leakage consult WECO Service.

d

⇐

Pull out the hole cover( A ).

A

77

⇐

A

⇐

Remove the dirt protection plug ( A )from the centre of the grinding wheel assembly.

Insert a 6 mm Allen wrench in the centre of the wheel assembly and hold in place.

CAUTION

The Allen screws have a left handed thread

⇐

Loosen the jack screw of the WECO grinding wheel assembly so far with the Allen wrench until the grinding wheel assembly separates from the spindle cone.

CAUTION

The Allen screws have a left handed thread.

⇐

A

78

Pull the rubber seal ( A ) out of the grinding chamber housing.

⇐

Turn the WECO grinding wheel assembly 90 degrees and take it out of the grinding chamber.

TIP •

⇐

Open the lens clamp completely by pulling the lens clamp plunger as far to the right as possible (also see Overview).

To dismantle the WECO grinding wheel assembly pull the grinding wheels from the shaft.

WARNING •

Do not use any tools to remove the grinding wheels from the shaft preventing damaging the wheels.

•

When because of stubborn grinding residues the removal of the grinding wheels is not possible apply, before anything else, a penetrating oil (MOS 2 in the spaces between the grinding wheels and allow it to work until the wheels can be removed by hand

TIP •

During re-assembly observe cleanliness.

•

Grease the sides of the grinding wheel with Vaseline. Re-assembly takes place in reverse order.

•

CAUTION •

•

Dress new grinding wheels before they are used for the first time, see paragraph Grinding wheel care Re-adjust the finish lens size and the roughing size, see paragraph

79

6.4 Cleaning the coolant re-circulation system The main cause of scratched lenses and contamination of the edger is dirty coolant water. Regular replacement of the coolant water and the cleaning of the coolant recirculation system is strongly recommended. TIP

9 10 11

12

•

Replace the coolant water every 200 to 250 lenses but at least once a week.

•

Contact local waste management authorities on the safe and the responsible disposal of lens grinding waste.

•

Use the WECO coolant additive (Order no. 5998-3027).

•

The number of edged lenses can be read off on the lens counter ( see paragraph 7)

⇐ ⇐

⇐

k g f h i

e d c b a

Switch ( 10 ) the edger OFF. Pull the plug (9).

Disconnect the coolant supply hose (f) with the quick disconnect (e) (Slide back the slip ring).

⇐

Pull the drain hose (i) out of the coolant tank.

⇐

Disconnect the pump power cable at the connector.

⇐

Lift the lid (d) with the pump off the coolant tank.

l

⇐

Remove the pump screen (Arrow) and clean it. Make sure that all lens grinding residue is removed from the pump screen..

Replace the WECO-plastic bag (Order no.: 5999-1008) Replace coolant water and add WECO-coolant additive (Order no.: 5998-3027). Re-assemble the coolant re-circulation unit and prepare for operation, see par.: Installing the coolant system

80

6.5 Maintenance Intervals WECO maschines and systems have been developed out of long practical experience for high productivity and a long life. All this leads to an economic way of lens processing. Besides the machines and the surrounding equipment we offer the WECO maintenance concept. We want you to have machines of lasting value which are always ready to work no matter when or how long and intensively want to work with them. We therefore recommend to follow the complete maintenance concept for WECO systems. WECO maintenance concept: Step I: Daily

Clean the edger inside with water and a very soft brush in places like the leathering and a hard brush for grinding residues in the grinding chamber. The outside should only be cleaned with a moist dustfree cloth wihout aggressive detergents. The surface may be cleaned with neutral detergents for plastic. If you use detergents in the grinding chamber make sure they are safe with high-grade finished surfaces as well as blockpads. If necessary change filter of high-pressure filter systems. In case of pneumatic elements emty water collector and check pneumatic oillevel. Step II: Weekly

As in step 1 but additionally Control water tightness. • Treat all rubber preservatives • Check diamond wheel condition with sample lenses (size, bevel); if • necessary correct size values according to manual or change diamond wheels (new or levelled WECO wheels) Change water for cooling systems with water tank. • Check FormTracer with frame gauge (size, axis) • Check centering device (blocking point, axis) • Step III: Monthly

As in step 2, but additionally change elements of the block -up system.

81

7 Checking Procedures 7.1 Reading the lens counters The edger counts the activity of each individual bevel position (roughing as well as bevelling) with an electronic counter, which can be read at any time. ⇐

Edging position numbers:

(1) Glass roughing wheel (1) Plastic roughing wheel (1) Free floating V-bevel wheel (1) Guided V-bevel wheel

4

5

3

2

1

(1) Flat bevel wheel

⇐

Switch (10) the edger ON.

9 10 11

12 LED read-out.

⇐

⇐

Press the “#” (23) function key.

LED read-out.

⇐

82

⇐

Key-in "1", press the "ENTER" key.

LED read-out.

⇐

⇐

⇐

Key-in the desired edging position (e.g. 1 for the number of lenses ground on the glass roughing wheel) and press the “ENTER” key. Lens counter read-out (e.g. 212 lenses) for glass roughing.

Pressing the “#” (function) key ends the program.

TIP •

Before the function is ended by pressing the “#” key, other edging positions can be read by keying in the desired position number after the “C” key is pressed.

83

7.2 Adjustment of rough and finish size NOTE •

•

•

•

Size changes with the "#" (function) and "2" keys affect the size of all lenses which are edged with the respective grinding wheels and / or bevel types. For a single job or a single lens the size can be changed by pressing the "C" key and the desired size change is entered on the number pad or with the number keys “2” or “8” keys, on edgers that have been programmed with “quick-set” keys. All bevelling wheels can be adjusted individually for glass and plastic. It is advisable to check the lens size after the grinding wheels have been dressed. Make adjustments, if necessary.

Procedure for “free-float”- and “guided” V-bevel size adjustments ⇐

− − − − −

4

5

3

2

The lens sizes for the V-bevels (3,4) should be adjusted in such a way that most lenses for metal frames fit the first time. Trace an average metal frame. Edge two mid-power (+3.00 - -3.00) lenses, one glass and one plastic. Check the lenses for fit into the frame. If necessary, re-edge. Adjust size setting (see following page).

1

Procedure for flat-bevel size adjustment ⇐

− − − −

4

84

5

3

2

1

The lens size for flat bevel (5) should be adjusted in such a way that the finished lens size is the same as the size of the traced lens, demo-lens or pattern. Trace a round pattern with the FormTracer. Edge two mid-power (+3.00 - - 3.00) lenses, one glass and one plastic. Check lens diameter with a calliper gauge. Adjust size setting (see following page).

Procedure for glass (1) rough size adjustment

roughing allowance for “free-float” V-bevel: roughing allowance for “controlled” V-bevel: roughing allowance for “flat”-bevel: − − − −

4

5

3

2

1

1.2 mm 1.5 mm 2.0 mm

Edge a 40 mm round lens. Press the "STOP" key after roughing. Check lens diameter after roughing. Adjust size setting (see following page).

NOTE Too much of a roughing allowance leads to pre-mature wear of the •

finishing wheels. Procedure for plastic lenses ( 2 ) rough size adjustment

roughing allowance for “free-float” V-bevel: roughing allowance for “controlled” V-bevel: roughing allowance for “flat” bevel: − − − −

4

5

3

2

1

−

0.8 mm 0.8 mm 0.8 mm

Press the "GP" key. Edge a lens with a 40 mm round shape. Press key "STOP" after roughing. Check lens diameter after roughing. Adjust size setting (see below).

How to correct the size setting ⇐

Grinding wheel position numbers:

(1) roughing wheel glass (1) roughing wheel plastic (1) “free-float” V-bevel wheel

4

5

3

2

1

(1) “controlled” V-bevel wheel (1) flat-bevel wheel Factory size settings with function keys "#" "2" - glass and plastic:

Position 1: 54,5 without "GP" (with "GP" no effect Position 2: 55,0 with "GP" (without "GP" no effect) Position 3: 57,8 with/without "GP" Position 4: 57,8 with/without "GP" Position 5: 55,5 with/without "GP" NOTE •

The factory setting is an approximate value only. The size settings differ slightly from edger to edger.

85

⇐

Press the "#" key.

Display read-out.

⇐

⇐

Press the "2" key.

Display read-out.

⇐

⇐

Enter the number of the to be changed bevel position (1-7).

⇐

Display read-out (example position “3” for “free-float” V-bevel).

⇐

Press the "ENTER" key.

⇐

Display (example 57,8).

⇐

For plastic lens size setting press the "GP" key, the LED in the “GP” key lights up and the size adjustment value for plastic lenses is displayed. For position # 2, roughing wheel plastic, the "GP" key must to be pressed.

NOTE

The displayed value does not reflect the lens size but relates to the travel of the grinding wheel assembly from the back stop to the edge of the lens.

•

⇐

⇐

Record the displayed value as it will be deleted once the "C" key is pressed and cannot be re-called. If necessary, enter the factory setting for this position and determine the difference by edging trial lenses.

Press the "C" key, the value will be deleted.

Display read-out.

⇐

⇐

Enter a new value (e.g. 57.9).

⇐

Press "ENTER" key to confirm.

⇐

⇐

Display read-out. The position number for another grinding wheel may be entered. Pressing the "#" key ends the procedure.

RULE FOR SIZE ADJUSTMENT:

•

If an edged lens is too large, increase the value. If an edged lens is too small, decrease the value.

⇐

Check lens size by edging a test lens.

•

86

Example for glass lenses with “free-float” V-bevel

The operator notes that most glass lenses edged in the “free-float” V-bevel mode have to be reduced by an additional 1/10 of 1.0 mm. in order to fit into the metal frame. This means the lenses are 1/10 of 1.0 mm too large. The size value (in function "#" "2", position 3) has to be increased by 1/10 mm. Steps to take:: − − − − − − − − − −

Press "#" key. Press "2" key. Enter position number "3" (for “free-float” V-bevel). Press "ENTER" key. Display shows e.g. "57.8". Press "C" key. Enter new size value: "57,9" Press "ENTER" key. Press "#" key. Edge a test lens.

87

7.3 Fine mechanical axis adjustment (Pattern adapter) Preparations

Scribe two flat pieces of glass with a diamond scratch needle straight through the middle. Block both pieces of glass (or flat CR-39) with an accurately adjusted blocking device. When blocking, the scribed line must be on the opposite to the side with the STARblock. ⇐

Switch the CNC edger ON.

⇐

Place the axis pattern (A), for the right side, on the pattern adapter.

A

Adjust the size and select the Flat bevel edging program

88

⇐

Press the key sequence "NEW JOB", "0" and "ENTER".

⇐

Press the "C" key.

⇐

Press the "4" key.

⇐

Press the "2" key.

⇐

Press the "ENTER" key/

⇐

Press the “Flat-bevel” selector key.

⇐

Clamp-in the right lens.

⇐

Press the "START" key.

⇐

Remove the right lens.

⇐

Clamp-in the left lens.

⇐

Place the axis pattern (A), for the left side, on the pattern adapter.

A

⇐

Press the "START" key.

Determine the axis problem and make corrections (A or B) c

D ⇐

⇐

⇐

c

D

Place the edged lenses back to back on top of each other. Determine the axis problem type A or B and determine the correction direction. Correct the axis problem by loosening and tightening the screws C and D depending on the axis problem type A or B.

Check the corrected axis adjustment results with the complete procedure; “Axis correction pattern adapter”. For this purpose the same axis check lenses can be used. However, the sizing in the edger must be changed from 42 mm to 41 mm, respectively 40 mm.

89

8 Trouble Shooting 8.1 Minor Problems Problem

Possible cause

Solution

After switching the edge ON no light in grinding chamber

No power at the electrical outlet

Check voltage at the outlet

Fuse defective.

Check the fuses / replace

No function after pressing START

Fuse defective

Check fuse / replace

Main motor does not run

Overload protection switch tripped

Allow switch to cool down, then press START again

The grinding chamber lid is open, when override switch is activated

Close grinding chamber lid.

Finish size is incorrectly set.

Correct the finish size setting

Lens size is not correct

When using patterns: - check the size of the pattern The coolant flow does not reach the grinding chamber

90

Coolant supply twisted or plugged with dirt.

Clean the coolant system

Plug on coolant tank loose

Secure the plug

The pump cable is not plugged into the edger

Plug the cable in

Pump propeller does not turn freely because of lens residue.

Clean the pump

The "PC" has been pressed

Press the “PC” key again

8.2 Electric Fuses CAUTION

9 •

10

In event the edger is not functioning, check the power outlet first and call an electrician, if necessary..

•

Pull the plug (9) before changing the fuses!.

⇐

Fuses (11)

11

12

11

T4A T4A Pump T15 A main fuse (USA) T16 A main fuse (Europe) TIPS • • •

T = slow fuse mT = medium slow fuse A separate circuit breaker for the edger is recommended. See Warranty Conditions: Power connection

91

8.3 Error messages b

Error message (e.g. E 840) ⇐

Error messages (b) are displayed in the lens size indicator.

With the read-out of some error messages the machine operation can be continued by pressing the “C” key, with the others the “STOP” key must be pressed. The edging cycle is stopped and the edger returns to its’ home position.

Message

Possible cause

Solution

E 000

The error cannot be cleared. The edging program is interrupted.

E 18 decentration too large E 318

The calculated decentration point lies outside the shape or is less than 10.5 mm from the edge. Clamping parts will be ground!

Switch the edger OFF. Remove the clamped lens from the grinding chamber. Switch the edger ON and repeat the procedure. Enter correct decentration values. If necessary change decentration procedure from active (decenter the pattern) to passive (decenter the lens).

E 19 shape radius > 50 mm

The decentration creates shape radii which are larger than 50 mm.

Enter correct decentration values. If necessary change decentration procedure from active (decenter the pattern) to passive (decenter the lens).

E 20 Differences to >

The decentration creates radius jumps which lie outside the dynamic capability of the machine.

Enter correct decentration values. If necessary change decentration procedure from active (decenter the pattern) to passive (decenter the lens).

E 210

The thermal overload circuit breaker of the main motor was tripped. Interrupting the power supply.

Allow the breaker to cool off (5-10 min) and start the edger again.

E 263

Sizing contact. Time-out error Grinding wheels too dull.

Dress (Clean) the grinding wheels

The movement of the grinding wheel assembly is blocked.

Contact WECO Service.

E 299

Time-out machine calculator board

Check for free movement of the grinding wheel assembly if necessary contact WECO Service.

E 804

The job number is outside the allowable range of the installed SM card.

Press the "C" key and enter the correct job number.

E 807

No shape data stored under the entered job number.

Press the "C" key.

Wrong job number entered.

Enter the correct job number.

After tracing the job number was called-up too quickly at the edger.

Re-enter the job number.

Immediately after pressing the “NEW JOB” key. The operating type "quick mode” is switched on. Job number “0” is not available.

Trace shape under job number “0”. The switch OFF the “quick mode” operating mode hold down the "WECO" key and in addition press the "#" key.

E 840

No connection with the memory card. Memory card OR the connection is defective.


E 841

Interface card (part of the memory card) defective.


93

w2-d Operations Manual

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