Citizen M16

M3 Programming

5.1 NC Program Structure

Field Code Changed

A program consists of a program body and program data. A program body is a list of machine operation commands in the sequence of machining processes. general, it is called a program. Program data is a list of prerequisites for operating the program. Program data is necessary for machine operation, and it is also useful as a means of operational communication between operators. 



Program

Tool set data

In

Program body

............... Specification Specification of machine operation commands

Machining data

............... S ettings of requirement for machining

.................................................... Compensation for errors of mounted tool center, diameter, and longitudinal position

5.1.1 Program number (O number) To distinguish between programs, a program number is assigned to each program (program body and machining data). A program number can can have up to eight digits. Note that you you cannot use the numbers 8000 to 9999 because they are used with machine manufacturer's custom programs.

5.1.2 Explanation of machining data Comment [y1]: M3procE1.bmp

5-5

M3 Programming





Bar Stock O.D. Enter the dimension of the outer diameter of the material to be machined. Tool Positioning Point (DIA) Enter a clearance from the material outer diameter at the position to which a tool (T01 to T09) is moved when it is selected. selected. When another tool is selected, the currently selected tool is moved to this  position. In other words, a tool (T01 to T09) i s moved to the tool positio ning point when it is selected, and the tool is moved to the tool positioning point when another tool is selected.

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Cut-Off Tool T01 is automatically entered.

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Cut-Off Speed The tip of a material is cut at the spindle speed in the Preparation mode.

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Cut-Off Feed The tip of a material is cut at the feed rate in the Preparation mode.

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Cut-Off End (DIA) The X axis is at the end position where cutting the tip of a material is completed in the Preparation mode. The end position is also the start position on the X axis axis from which the program starts.

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

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Machining Length Enter the maximum move distance of the main spindle required for machining a workpiece. a. Workpiece length + cut-off tool width or rear turning tool width  b. Workpiece length + tool shift amount for secondary machining Enter the value a or b that is necessary for the program. Pieces/1Chuck Enter the number of product to be machined in the program. Tubing Bar Stock I.D. When a pipe material is to be machined, enter the dimension of the pipe inner diameter. The entered value is used for cut-off cut-off machining machining in the Preparation mode. The tool moves to the  position defined b y (pipe inner diameter –  a  a mm) at the cutting feed rate, and then it moves at the rapid feed rate until reaching the specified cut-off end position.

a

M12

M16

M20

M32

3.0

3.0

4.0

4.0

Example: When the pipe inner diameter is 10.0 mm and and the cut-off end position is X – 3.0: 3.0: The tool moves to the position X6.0 at the cutting feed rate, and then it moves at the rapid feed rate until reaching the end position X – 3.0. 3.0. 

Back Spindle Chuck POS Enter the value of workpiece protruding from the back spindle.

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M3 Programming

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Work Receiver No. Enter the tool number of the turret tool post on which the workpiece separator is mounted.

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Front Mach Holder Name Enter the name of the gang tool holder mounted on the machine.

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Back Drill Holder Name Enter the name of the back drilling holder mounted on the machine.

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Back Spindle Enter the type type of the back spindle mounted on the machine. machine. Support".

Select either "Standard" or "With

For M1216 type V, the setting shown below is required.

CAUTION When mounting the double cross spindle (MSC407) of turretholder for M1216 type V, MSC407 interferes with guide bushing if the turret X2 axis is operated at full stroke ( – side). To avoid interference, open the machining data screen and put a checkmark on the tool number to which MSC407 is to be mounted. The checked tool number is selected and the stroke area is changed. Be sure to provide this setting. X2 stroke Normal

98.0

 After changed

80.0

Comment [u2]: M3procE3

(This screen shows the machine of type V of M1216 model.)

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M3 Programming

5.2 Drive Axes and Multi-axis Control 5.2.1 Drive axes Comment [y3]: M3B11_5_1.wmf

X1  Y1

Z1

X3

Z3

 Y2

Z2

 Axis

X1

Type

Type

Model III

Model V

Gang tool post

Gang tool post

Z1

Headstock

Headstock

S1 = Main spindle

Y1

Gang tool post

Gang tool post

S2 = Back spindle

C1

Main spindle C axis

Main spindle C axis

S3 = Tool spindle of the gang tool post

X2

Turret

Turret

S4 = Tool spindle of the turret

Z2

Turret

Turret

S5 = Rotary guide bushing

Y2

 – 

Turret

C2

Back spindle C axis

Back spindle C axis

X3

Back spindle

Back spindle

Z3

Back spindle

Back spindle

Notes  

The above photograph shows M32. Y2 axis is available for type V onl y.

5-8

X2

(S6 = Tool spindle of the back 3-spindle tool post)

M3 Programming

5.2.2 Coordinate values and signs The figure below shows the signs used for operation. For the X1, X2, X3, Y1, and Y2 axes, specify a coordinate value with the diameter that is equivalent to the distance from the center of the material. For the Z1, Z2, and Z3 axes, specify a coordinate value with the distance. Comment [y4]: C082x2-1.wmf Y1

X3

X1   e    k   o   r    t   s    3    X

Z3

  e    k   o   r    t   s    1    X

c

Z3 stroke

b a

Z1 stroke with a rotary guide bushing Z1 stroke with a stationary guide bushing

Z2 stroke   e    k   o   r    t   s    2    X

Z1 X2

Z2

  2  9      8      2

20 3 0 

 3 9

    8     3

3     1      3         2        

        7         3

       7       2

2    1  

       6        3

     5      3

   3    4

     6      2     5     2

  3   3

   2    4

2       2      

  2   3 

Y2

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M3 Programming

CAUTION The gang tool post Y1 axis of the M31216/M32032 complies with diameter specifi cation. If you want to use machining programs for the M21216/M22032 when machining workpieces with the M32032, change the Y1-axis setting complying with the diameter specification, and then start running the machine. If you run the machine with the Y-axis setting complying with radius specification for the M22032, the tool and workpiece may interfere with each other.

X1 stroke Z1 stroke (Fixed guide bushing) Z1 stroke (Rotary guide bushing) Y1 stroke

M12 59.0

225.0 205.0 208.0

M16 59.0

215.0 205.0 208.0

M20 96.0

325.0 325.0

M32 96.0

325.0 325.0

275.0

275.0

Type III: 135.0

Type III: 135.0

Type V: 120.0

Type V: 120.0

X2 stroke

98.0

98.0

Z2 stroke

133.0

133.0

202.0

202.0

Y2 stroke

33.0

35.0

45.0

45.0

X3 stroke

195.0

195.0

235.0

235.0

Z3 stroke

280.0

280.0

410.0

410.0

78.0

88.0

135.0

135.0

a  b c

Note Y2 axis is available for type V only.

5-10

98.0 10.0

98.0 10.0

135.0

135.0

10.0

10.0

M3 Programming

5.2.3 Coordinate values and signs for secondary machining The same concept as for turning applies to coordinate values and signs for secondary machining. Be sure to specify an X coordinate value with the diameter. As for signs, specify X coordinates as X on the side on which the tool exists, and specify Z coordinates as Z on the side on which the workpiece exists. X

Comment [ER5]: m2-08.wmf         0   .         1

        6

Z

        0   .         6

X-14.0 Z25.0 Through-hole position

        2         1

Z+

        5   .         6

Program zero point X0, Z0

15.0

10.0

X13.0 Z25.0 Positioning

X+

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M3 Programming

5.2.4 Coordinate values and signs for back machining The following figure shows the positional relation among the back spindle, the back machining tools, and the workpiece chucked by the back chuck. a (Z3 return position)

Comment [ER6]: m2pro-009ax.wmf

T43 T42 T41

b

Tools on the back 3-spindle tool post

Back spindle

 A

d

Maximum workpiece protruding length Enter the value for the "Back Spindle Chuck POS" in the machining data.

c

(Z2 return position)

Turret

M12

A

Maximum workpiece  protruding length length

M16

M20

M32

25.0

25.0

65.0

65.0

a

290.0

290.0

420.0

420.0

 b

35.0 (25.0)

35.0 (25.0)

80.0 (70.0)

80.0 (70.0)

c

133.0

133.0

202.0

202.0

d

5.0

5.0

5.0

5.0

 Note: Values for the machine with the optional tool spindle of back 3-spindle too l post, S6, are enclosed in parentheses on Line b. Specify the coordinate values in the program assuming that the workpiece is fixed. Comment [ER7]: m2pro-009b.wmf

+Z +X

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M3 Programming

Notes 



The maximum workpiece protruding length from the en d face of the back spindl e are listed in row A of the table on the previous page. If the external external length of a workpiece exceeds exceeds the maximum maximum value, the workpiece interferes with another tool during tool selection. For the "Back Spindle Chuck POS" in the machining data, enter the workpiece protruding length from the back spindle. (workpiece protruding length = entire workpiece workpiece length –  back  back chuck position specified in the program) If the above value is not entered, the distance between the end face of the back spindle and the back machining tool becomes zero. Consequently, the back machining machining tool interferes with the workpiece  protruding from the back spindle when b ack machining is performed.

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M3 Programming

5.3 Machining Patterns To simplify a program used with a multi-axis machine, operations (machining) are grouped by purpose. An operational (machining) group is called a machining machining pattern. The following following six machining patterns are available: 

Machining pattern cancel (G600) G600 cancels the machining patterns G610, G620, G630, G635, G640, and G650. In general, you do not have to use G600 during automatic operation.



(Power-on state)

Alternate machining (G610) This machining machining pattern is the standard machining pattern that is most frequently frequently used. The machining machining  pattern is useful when the front machining in $1 to perform machining by alternately using a tool on the gang tool post and a tool on the turret tool post. The machining pattern also enables the back machining in $3 to perform machining with a tool on the back 3-spindle tool post.

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Two-saddle machining (G620) Use this machining pattern for the front machining in $1 and $2 to perform simultaneous machining such as rough/finish machining and simultaneous thread cutting (different pitches permitted). The machining pattern can assign the spindle C axis (C1) to perform machining ($1) with a tool on the gang tool post or machining machining ($2) with a tool on the turret tool post. The machining pattern also enables the  back machining in $3 to perform machining with a tool o n the back 3-spindle too l post.

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Front/back parallel machining (G630) Use this machining pattern to perform front machining and back machining independently. This machining pattern permits you to perform back machining by alternately using a tool on the turret tool  post and a tool o n the back 3-spindle too l post.

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Front/back parallel machining (G635) Use this machining pattern to perform front machining and back machining independently. This machining pattern permits you to perform back machining by alternately using a tool on the turret tool  post and a tool o n the back 3-spindle too l post. The specification in the back-machining program is different between G630 and G635: With G630, specify the turret for $2 and the 3-spindle for back machining for $3 in the program. program. With G635, specify specify both the turret and the 3-spindle for back machining for $2 in the program.

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Simultaneous 3-lines machining (G640) This machining pattern permits you to perform the machining of three processes (e.g., outer diameter machining, front front center machining (drilling), and back center machining machining (drilling)). You cannot use this machining pattern for machining with tools on the back 3-spindle tool post.

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Pick-off, Center-support (G650) Specify this machining pattern after alternate machining (G610), two-saddle machining (G620), and front/back parallel machining (G630, G635). This machining machining pattern enables the back spindle to  pick-off the workpiece and support the long workpiece.

5-14

Formatted:  Indent: Left: 0 cm, Hanging: 0,4 cm, Bulleted + Level: 1 + Aligned at: 1 cm + Tab after: 1,63 cm + Indent at: 1,3 cm, Tab stops: Not at 1,63 cm

M3 Programming

Notes You can use the machining pattern of a G code in the G700's. manual> for details on the use of G codes in the G700's.

See the M21216/2032
 Axis control groups The axes of a multi-axis machine are grouped by operational purpose. The axis groups are called axis control groups. Create a program for each axis control group. The programs of the axis control groups are executed when the machine is started.

Superimpose control If the superimpose control function (G620, G640, or G650 machining pattern) is specified to an axis control group, its member axes that have been operating with different coordinate systems will operate synchronizing with the superimposed coordinate system. Example: With Z1-Z2 superimposed by G620, Z1 is the reference axis and Z2 is the superimposed axis. In a program, you can specify Z2 coordinate values on the coordinate system of Z1.

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M3 Programming

5.3.1 Machining patterns, axes of axis control groups, and superimpose axes The table below shows axis assignment to axis control groups in the machining patterns. According to the table, you can select the axis control group that corresponds to the axis you want to move. Machining pattern

Machining pattern cancel

Command code

G600

Alternate machining

G610

Two-saddle machining

G620

Front/back parallel machining

G630

Front /back parallel machining

G635

 Axes of axis control groups $1 X1, Z1, Y1, C1

$2 X2, Z2, Y2

$3 X3, Z3, C2

X1, Z1, Y1, C1

G612

X2, Z1, Y2, C1

G621

X1, Z1, Y1, C1

X2, Z2, Y2

X3, Z3, C2

Z1-Z2

G622

X1, Z1, Y1

X2, Z2, Y2, C1

X3, Z3, C2

Z1-Z2

X2, Z2, Y2, C2

 –   – 

G632

X1, Z1, Y1, C1

G633

X1, Z1, Y1, C1

G637

X1, Z1, Y1, C1

X2, Z2, Y2, C2

G638

 – 

X3, Z3, C2

 –   –   – 

X3, Z3, C2

X1, Z1, Y1, C1

X2, Z2, Y2

Pick-off, center support

G650

Depending on the  previous machining  pattern

Depending on the X3, Z3, C2  previous machining  pattern

M2

X3, Z3, C2

 Axes of axis control groups $1 X1, Z1, Y1, C1

$2 X2, Z2, Y2

 –   –   –   – 

X3, Z3, C2

X1, Z1, Y1, C1

Command code

 –   – 

X3, Z3, C2

G640

1-cycle stop

 – 

G611

Simultaneous 3-lines machining

Machining pattern

Superimpose axis

$3 X3, Z3, C2

Z1-Z2, Z2-Z3 Z1-Z3

Superimpose axis

 – 

Notes 



 

Use the machining pattern cancel G600 as the command to cancel the machining patterns G610 to G650. In general, you do not have to use the G600 command. Specify the machining patterns G610 to G650 for automatic operation. Use the G611 and G612 commands to select tools on the gang tool post and turret tool post. Use the G621 and G622 commands to select the axis control groups of the main spindle C axis. Use the G632, G633, G637, and G638 commands to select tools on the turret tool post and back 3-spindle tool post. Do not execute the machining pattern commands G600 to G650 in the MDI mode. Y2 axis is available for type V onl y.

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M3 Programming

5.3.2 Machining pattern transition The machining pattern commands enable machining pattern transition. Only the alternate machining pattern (G610), two-saddle machining pattern (G620), and front/back  parallel machining pattern (G630, G635) can be switched to th e pick-off machining pattern (G650). However, the pick-off machining pattern (G650) can be switched to all the other machining patterns. Comment [ER8]: word

 Alternate machining G610

Machining pattern

Two-saddle

cancel

machining

Pick-off,

G620

Center-support

G600

G650

Simultaneous 3-lines machining G640

Front/back parallel machining G630 G635

Can be switched to all the other machining patterns.

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M3 Programming

5.3.3 Machining pattern flow The machining pattern commands should be specified for all the three axis control groups. If you specify the U0 and W0 arguments in the block of the machining pattern command, each axis does not move to the fixed point when the machining pattern is switched.

 Arguments (U0, W0 and V0) for the machining patterns U0 specifies that the X axis does not move to the fixed point, W0 specifies that the Z axis does not move to the fixed point, and V0 specifies that the Y axis does not move to the fixed point. The axis that moves varies depending on the specified axis control group. $2 moves the turret tool post (X2, Z2 and Y2 axes) and $3 moves the back headstock (X3 and Z3 axes).  Axis control group

Argument

$2 U0, W0, V0

$3 U0, W0

Mobile section

Turret tool post (X2, Z2, Y2 axes)

Back headstock (X3, Z3 axes)

The fixed point varies depending on the machining pattern. U0 of $2 does not move the turret tool post to the return position. W0 of $2 does not move the turret tool post to the machining reference point. V0 of $2 does not move the turret tool post (Y axis) to the center of the main spindle. This argument is enabled only in the machine of type V. U0 of $3 does not move the back headstock to the center of the guide bushing. W0 of $3 does not move the back headstock to the return position or the back machining reference point.

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M3 Programming

Program sample $1 G610 .................. Alternate machining (G611) : G612 : M41 .................. Backward movement of turret Z2 axis G611 : : G630 ..................Front/back parallel machining : : :

$2 $3 G610...................Alternate machining G610 .................. Alternate machining : : : : :

: : : G630..................... Front/back parallel G630 .................. Front/back s parallel machining machining G632 G632 : M40 ...................... Forward movement of turret Z2 axis : G633 G633 : : G610 .................. Alternate machining G610...................Alternate machining G610 .................. Alternate machining (G611) : : : G612 : : : G650 ..................................... Pick-off G650......................................Pick-off G650 .....................................P ick-off : : G610 .................. Alternate machining G610...................Alternate machining G610 .................. Alternate machining : : M56 G999 G999 G999 N999 N999 N999 M02 M02 M02 M99 M99 M99 % % %

Notes Be sure to cancel the coordinate system shift command and compensation command before switching the machining pattern. However, you do not have to cancel the compensation command when switching to G650.

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M3 Programming

5.3.4 Alternate machining (G610) This machining pattern is the standard machining pattern that is most frequently used. The machining  pattern is useful when the front machining in $1 t o perform machining by alternately using a tool on the gang tool post and a tool on the turret tool post. The machining pattern also enables the back machining in $3 to perform back machining with a tool on the back 3-spindle tool post. Command format $1 G610

$2 G610 U0 V0 Z

$3 G610 W0

Axis control group Specify this command for all the axis control groups $1, $2, and $3. Arguments 

$2 U0:



$2 V0:



$2 Z



$3 W0:

The turret tool post (X2 axis) does not move. If the argument is not specified, the turret tool post moves to the return position. The turret tool post (Y2 axis) does not move. If the argument is not specified, the turret tool post moves to the center of the main spindle. This argument is enabled only in the machine of type V. : Specify this argument to change the point to which the turret tool post (Z2 axis) moves. For example, when Z-5.0 is specified, the turret tool post (Z2 axis) moves to the position 5.0 mm away from the forward end position. If the argument is not specified, the turret tool post (Z2 axis) moves to the forward end position (the position opposite to the gang tool post). The back headstock (Z3 axis) does not move. If the argument is not specified, the back headstock moves to the return position.

This machining pattern automatically enters the queuing state. Cancel the coordinate system shift command and compensation command before executing the machining pattern command. If you specify the U0, W0 and V0 arguments in the block of the machining pattern command, each axis does not move to the fixed point when the machining pattern is switched. The axes automatically move to the positions shown in the figure below when the alternate machining  pattern command is executed. The following commands are necessary for machining that is performed by alternately usin g a tool on two tool posts. G611 is initially set when the G610 commands is specified. .......... Gang tool post select (Selection of a tool on the gang tool post) G611 .......... Turret select (Selection of a tool on the turret tool post) G612 Specify G611 or G612 for $1.

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M3 Programming

Pre-selection of a tool A tool on the gang tool post and a tool on the turret tool post can be pre-selected in the G610 mode. In G611 mode (gang tool post select), you can specify a tool (T2000's) on the turret tool post for selecting the tool while a tool on the gang tool post is machining. Conversely, in G612 mode (turret select), you can specify a tool (T0100's) on the gang tool post for selecting the tool while a tool on the turret tool post is machining. To use the pre-selected tool on the gang tool post, switch the G612 mode to the G611 mode. To use the pre-selected tool on the turret tool post, switch the G611 mode to the G612 mode.

CAUTION To pre-select a turret tool using G611, the distance between the gang tool and the turret tool must be at least 20.0 mm in radius to prevent interference.

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M3 Programming

Operation sample (1) The turret tool post (X2 axis) moves to its return position at the rapid feed rate. (2) The turret tool post (Y2 axis) moves to th e center of the main spin dle at the rapid feed rate. The turret tool post (Z2 axis) moves to the position opposite to the gang tool post at the rapid feed rate. The back headstock (Z3 axis) moves to the return position at the rapid feed rate. Comment [y9]: 05-14x1-1.wmf

X1

X1 axis Does not move. (2) Z3 axis Z3 axis Return position X3 axis Does not move.

b Z1 Z3

(1) X2 axis (2) Y2 axis (3) Z2 axis c

Z3 machine zero point

M12

M16

(1) to (3) indicate the operation sequence.

M20

M32

 b

80.0

80.0

90.0

90.0

c

290.0

290.0

420.0

420.0

5-22

X2 axis Return position of the tool on the turret tool post Z2 axis Position opposite to the gang tool X2 Y2 axis Center of the main spindle

M3 Programming

Macro specification Command code  Name

G610 Alternate machining

$1

Axis control group Axes of axis control group

G611

X1, Z1, Y1, C1

G612

X2, Z1, Y2, C1

Superimpose Coordinate system

 –  X1-X2 switching and Y1-Y2 switching by G611 and G612 commands

Argument

$2

 –   –   – 

$3 X3, Z3, C2

 – 

Z2: Alignment with the front Z3: Alignment with the machining reference machine coordinate  point U0: The turret tool post (X2) W0: T he back spindle (Z3) does not move. If the does not move. If the argument is not argument is not specified, the X2 axis specified, the Z3 axis moves to the return moves to the return  position.  position. V0: The turret tool post (Y2) does not move. If the argument is not specified, the Y2 axis moves to the center of the main spindle. Z : Specify this argument to change the point to which the turret tool post (Z2) moves.

Spindle with which synchronous feed is enabled

Main spindle

 – 

Back spindle

Spindle with which constant surface speed control is enabled

Main spindle

 – 

Back spindle

Cutting block interlock

Main spindle

T command

Gang tool post and turret tool post

Others

 – 

 –   –   – 

Back spindle Back 3-spindle tool post and  back spindle

 – 

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M3 Programming

Program sample $1 $2 G610 .................. Alternate machining G610 ................. Alternate machining (G611)..................... Gang tool select T2100........... Pre-selection of the tool : : G612 ...............................Turret select T0200........... Pre-selection of the tool G00 Z–0.5 Machining with G01 Z5.6 F0.1 T21 T2100 G00 Z–0.5 T00 G611 ......................... Gang tool select T2500 X17.0 ............. Pre-selection of the tool G00 X9.0 Z–0.5 T02 G01 X12.0 Z1.0 F0.08 Machining with Z17.8 T0200 X15.2

$3 G610 .................. Alternate machining T4100 G00 Z–0.5 G01 Z3.0 F0.1 T41 G00 Z–0.5 T00 : : T4000 ............................ Back spindle

X17.0 Z18.7 : :

Notes 

 



  



Each axis control group should hold the feed per rotation command and feed per minute command as modal functions. Specify the main spindle speed command for $1, and specify the back spindle speed command for $3. You can create a $1 program similar to a twin-turret lathe program assuming the end face of the workpiece on the front side to be the reference point. You can create a $3 program similar to a 2-axis lathe p rogram assuming the end face of the workpiece on the back side to be the reference point. G610 is a modal G code that is enabled until another machining pattern command is executed. The turret Z2 axis moves to the position (the forward end position) opposite to the gang tool post. If you want to change the position of the turret Z2 axis during G610 execution, specify M40 Z . See

. Y2 axis is available for type V onl y.

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M3 Programming

5.3.5 Two-saddle machining (G620) Use this machining pattern for the front machining in $1 and $2 to perform simultaneous machining such as rough/finish machining and simultaneous thread cutting (different pitches permitted). The machining  pattern can assign the main spindle C axis (C1) to perform machining in $1 with a to ol on the gang tool  post or machining in $2 with a tool on the turret to ol post. The machining pattern also enables the back machining in $3 to perform back machining with a tool on the back 3-spindle tool post. Command format $1

$2

$3

G620

G620 U0 W0 V0

G620 W0

Axis control groups Specify this command for all the axis control groups $1, $2, and $3. Arguments 







$2 U0:

The turret tool post (X2 axis) does not move. If the argument is not specified, the turret tool post moves to the return position. $2 W0: The turret tool post (Z2 axis) does not move. If the argument is not specified, the turret tool  post moves to the position 5.0 mm away from the end face of the workpiece on the front side. $2 V0: The turret tool post (Y2 axis) does not move. If the argument is not specified, the turret tool post moves to the center of the main spindle. This argument is enabled only in the machine of type V. $3 W0: The back headstock (Z3 axis) does not move. If the argument is not specified, the back headstock moves to the return position.

This machining pattern automatically enters the queuing state. Cancel the coordinate system shift command and compensation command before executing the machining pattern command. If you specify the U0, W0 and V0 arguments in the block of the machining pattern command, each axis does not move to the fixed point when the machining pattern is switched. The axes automatically move to the positions shown in the figure below when the two-saddle machining  pattern command is executed. The following commands are necessary for assigning the main spindle C axis. G621 is initially set when the G620 command is specified. .......... Main spindle C axis (C1) at $1 side enabled G621 .......... Main spindle C axis (C1) at $2 side enabled G622 Specify G621 or G622 for both $1 and $2. The commands are disabled when optional main spindle C axis is not mounted.

Main spindle C axis (C1)

M12

M16

M20

M32

Optional

Optional

Standard

Standard

5-25

M3 Programming

Operation sample (1) The turret tool post (X2 axis) moves to its return position at the rapid feed rate. (2) The turret tool post (Y2 axis) moves to the center of the main spind le at the rapid feed rate. The turret tool post (Z2 axis) moves to th e position 5.0 mm away from the end face of the workpiece on the front side at the rapid feed rate. The back headstock (Z3 axis) moves to the return position at the rapid feed rate. Comment [y10]: 05-18x1-1.wmf

X1

X1 axis Does not move. (2) Z3 axis Z3 axis Return position X3 axis Does not move.

b

5.0 Z1

External workpiece length from the end face of the workpiece on the front side

Z3

(1) X2 axis (2) Y2 axis

X2

(3) Z2 axis Z2

c

Z3 machine zero point

 b c

5-26

M12 80.0

290.0

M16 80.0

290.0

X2 axis Return position of the tool on the turret tool post Z2 axis The position 5.0 mm away from the end face of the workpiece on the front side Y2 axis Center of the main spindle

(1) to (3) indicate the operation sequence.

M20 90.0

420.0

M32 90.0

420.0

M3 Programming

Macro specification Command code  Name

G620 Two-saddle machining

$2

$3

G621

X1, Z1, Y1, C1

$1 G621

X2, Z2, Y2

X3, Z3, C2

G622

X1, Z1, Y1

G622

X2, Z2, Y2, C1

Axis control group Axes of axis control group Superimpose Coordinate system

 –  C1 switching by G621 and G622 commands

Z2 superimposed on Z1 Z2: Alignment of the front tool nose of the tool (on the turret tool post) with the end face of the workpiece on the front side. C1 switching by G621 and G622 commands

 –  Z3: Alignment with the machine coordinate

U0: The turret tool post (X2) W0: T he back spindle (Z3) does not move. If the does not move. If the argument is not argument is not specified, the X2 axis specified, the Z3 axis moves to the return moves to the return  position.  position. W0: The turret tool post (Z2) does not move. If the argument is not specified, the Z2 axis moves to the return  position. V0: The turret tool post (Y2) does not move. If the argument is not specified, the Y2 axis moves to the center of the main spindle.

Argument

Spindle with which synchronous feed is enabled

Main spindle

Main spindle

Back spindle

Spindle with which constant surface speed control is enabled

Main spindle

Main spindle

Back spindle

Cutting block interlock

Main spindle

Main spindle

Back spindle

T command

Gang tool post

Turret tool post

Back 3-spindle tool post and  back spindle

Others

 – 

 – 

 – 

5-27

M3 Programming

Program sample $1 : : G620 ................................Two-saddle T0200 G00 X16.0 Z–1.0 T02 G01 X6.0 F0.1 Z39.9 F0.08 X9.0Z39.9 F0.08 :X9.0 : :

$2 : : G620................................ Two-saddle T2100 G00 X16.0 Z–1.0 T21 G01 X5.0 F0.1 Z40.0 F0.04 X7.5 : :

$3 : : G620 ................................Two-saddle T4100 G00 Z–0.5 G01 Z3.0 F0.1 T41 G00 Z–0.5 T00 : : T4000 ............................ Back spindle

Notes 









 

Each axis control group should hold the feed per rotation command and feed per minute command as modal functions. Specify the main spindle speed command for $1 or $2. The constant surface speed control command is enabled with axis control groups for which the speed command is specified. Specify the back spindle speed command for $3. You can create a $1 program similar to a 2-axis lathe p rogram assuming the end face of the workpiece on the front side to be the reference point. You can create a $2 program in the same manner as for the $1 program, regardless of the movement of the Z1 axis. You can create a $3 program with the same X and Z as for a 2-axis lathe program assuming the end face of the workpiece on the back side to be the reference point. G620 is a modal G code that is enabled until another machining pattern command is executed. Y2 axis is available for type V onl y.

5-28

M3 Programming

5.3.6 Front/back parallel machining (G630) Use this machining pattern to perform front machining and back machining independently. This machining pattern permits you to perform back machining by alternately using a tool on the turret tool  post and a tool on the back 3-spindle too l post. Command format $1

$2

G630

$3

G630 U0 W0 V0 G630 U0 W0 I

Axis control groups Specify this command for all the axis control groups $1, $2, and $3. Arguments 

$2 U0:



$2 W0:



$2 V0:



$3 U0:



$3 W0:



$3 I

The turret tool post (X2 axis) does not move. If the argument is not specified, the turret tool post moves to the return position. The turret tool post (Z2 axis) does not move. If the argument is not specified, the turret tool post moves to the position 5.0 mm away from the end face of the workpiece on the  back side. The turret tool post (Y2 axis) does not move. If the argument is not specified, the turret tool post moves to the center of the main spindle. This argument is enabled only in the machine of type V. The back headstock (X3 axis) does not move. If the argument is not specified, the back headstock moves to the center of the guide bushing. The back headstock (Z3 axis) does not move. If the argument is not specified, the back headstock moves to the retract position. : Specifies the amount of shift from the zero point for back machining with the Z3 axis. Specify the I argument when the Z2 axis stroke is too short for drilling with the tool on the turret tool post for back machining. The Z2 and Z3 axes shift by I argument.

This machining pattern automatically enters the queuing state. Cancel the coordinate system shift command and compensation command before executing the machining pattern command. If you specify the U0, W0 and V0 arguments in the block of the machining pattern command, each axis does not move to the fixed point when the machining pattern is switched. The axes automatically move to the positions shown in the figure below when the front/back parallel machining pattern command is executed. The axes for back machining move when the G632 or G633 command is executed. The same commands are necessary for machining that is performed by alternately using two types of tools.

5-29

M3 Programming

Back turret select (G632) Use this command to perform back machining with a tool on the turret tool post. machining program for $2.

Specify the back

Command format $2 G632 U0 W0

$3 G632 I

Axis control groups Specify this command for both $2 and $3. Arguments 

$2 U0:



$2 W0:



$3 I

5-30

The turret tool post (X2 axis) does not move. If the argument is not specified, the turret tool post moves to the return position. The turret tool post (Z2 axis) does not move. If the argument is not specified, the turret tool post moves to the position 5.0 mm away from the end face of the workpiece on the  back side. : Specifies the amount of shift from the zero point for back machining with the Z3 axis. Specify the I argument when the Z2 axis stroke is too short for drilling with the tool on the turret tool post for back machining. The Z2 and Z3 axes shift by I argument.

M3 Programming

Back 3-spindle select (G633) Use this command to perform back machining with a tool on the back 3-spindle tool post.  back machining program for $3

Specify the

Command format $2 G633 U0 W0

$3 G633 W1 I

Axis control groups Specify this command for both $2 and $3. Argument 

$2 U0:



$2 W0:



$3 W0:



$3 I

The turret tool post (X2 axis) does not move. If the argument is not specified, the turret tool post moves to the return position. The turret tool post (Z2 axis) does not move. If the argument is not specified, the turret tool post moves to the position 5.0 mm away from the end face of the workpiece on the  back side. The back headstock (Z3 axis) does not move. If the argument is not specified, the back headstock moves to the return position. : Specifies the amount of shift from the zero point for back machining with the Z3 axis. Specify the I argument when the Z2 axis stroke is too short for drilling with the tool on the turret tool post for back machining. The Z2 and Z3 axes shift by I argument. If the I argument is specified in the G633 command, the Z3 axis is not shifted the amount specified  by the argument.

Pre-selection of a tool A tool on the turret tool post can be pre-selected in the G630 mode. In G633 mode (back 3-spindle select), you can specify a tool (T2000's) on the turret tool post for selecting the tool while a tool on the back 3-spindle tool post is machining. To use the pre-selected tool on the turret tool post, switch the G633 mode to the G632 mode.

5-31

M3 Programming

Operation sample

Back turret select (G632) (1) The turret tool post (X2 axis) moves to its return position at the rapid feed rate. (2) The back headstock (Z3 axis) moves to the return position at the rapid feed rate. The turret tool post (Z2 axis) moves to the p osition 5.0 mm away from the end face of the workpiece o n the back side at the rapid feed rate. (3) The back headstock (X3 axis) moves to the center of the guide bushing and the back headstock (Z3 axis) moves to the zero point for back machining at the rapid feed rate. Comment [y11]: 05-23x2-1.wmf

X1

(2) Z3 axis (3) X3 axis (3) Z3 axis X3 axis Center of guide bushing Z3 axis Zero point for back machining

X2

      a

5.0

(2) Z2 axis

X2 axis Return position of the tool on the turret tool post Z2 axis The position 5.0 mm away from the end face of the workpiece on the back side

(1) to (3) indicate the operation sequence. Z2

Distance between zero points on the Z2 an d Z3 axes (d) ＋ Return position on the Z2 axis (c)

a  b

M12 80.0

256.0

M16 80.0

256.0

M20 90.0

346.0

b

Return position on the Z2 axis (c) (machining data) + 5mm

M32 90.0

346.0

c

4.0

4.0

4.0

4.0

d

30.0

30.0

70.0

70.0

5-32

Z1

(1) X2 axis

Back spindle chuck position (machining data)

＋

Back spindle chuck position

M3 Programming

Back 3-spindle select (G633) (1) The turret tool post (X2 axis) moves to its return position at the rapid feed rate. (2) The back headstock (Z3 axis) moves to the return position at the rapid feed rate. The turret tool post (Z2 axis) moves to the po sition 5.0 mm away from the end face of the workpiece on the back side at the rapid feed rate. The back headstock moves toward the back 3-spindle tool post when the command for the tools T4000's is executed. Comment [y12]: 05-24x2-1.wmf

X1

(2) Z3 axis

Z3 axis Return position X3 axis Does not move. Back-end face of the workpiece when G632 (selection of tool on the turret tool post) is s ecified for 3

X3

      a

5.0

Z3

(2) Z2 axis

X2 axis Return position of the tool on the turret tool post Z2 axis The position 5.0 mm away from the end face of the workpiece on the back side

(1) and (2) indicate the operation sequence. b

Return position on the Z2 axis (c) position (machining data) + 5mm

Z3 machine zero point

a

M12 80.0

M16 80.0

Z1

(1) X2 axis

M20 90.0

＋

Back spindle chuck

M32 90.0

 b

290.0

290.0

420.0

420.0

c

4.0

4.0

4.0

4.0

5-33

M3 Programming

Macro specification Command code  Name

G630 Front/back parallel machining

Axis control group

$1

$2

$3

Axes of axis control group

X1, Z1, Y1, C1

 – 

 – 

Superimpose

 – 

Cancel of Z2 superimposition

Cancel of Z3 superimposition

Coordinate system

 – 

 – 

 – 

U0: The turret tool post (X2) U0: T he back spindle (X3) does not move. If the does not move. If the argument is not argument is not specified, the X2 axis specified, the X3 axis moves to the return moves to the return  position.  position. W0: The turret tool post (Z2) W0: T he back spindle (Z3) does not move. If the does not move. If the argument is not argument is not specified, the Z2 axis specified, the Z3 axis moves to the return moves to the return  position.  position. V0: The turret tool post (Y2) I : Specifies the amount does not move. If the of shift from the zero argument is not  point for back specified, the Y2 axis machining with the Z3 moves to the center of axis. the main spindle.

Argument

Spindle with which synchronous feed is enabled

Main spindle

Back spindle

Back spindle

Spindle with which constant surface speed control is enabled

Main spindle

Back spindle

Back spindle

Cutting block interlock

Main spindle

Back spindle

Back spindle

T command

Gang tool post

Others

5-34

 – 

 –   – 

 –   – 

M3 Programming

Back turret select (G632) Command code

G632

 Name

Front/back parallel machining  –  Back turret select

Axis control group

$2

$3

Axes of axis control group

X2, Z2, Y2, C2

 – 

Coordinate system

Z2: Alignment of the back tool nose of the X3: Alignment with the machine coordinate tool (on the turret tool post) the end face Z3: Alignment with the zero point for back of the workpiece on the back side. machining

Argument

U0: The turret tool post (X2) does not move. I If the argument is not specified, the X2 axis moves to the return position. W0: The turret tool post (Z2) does not move. If the argument is not specified, the Z2 axis moves to the position 5.0 mm away from the end face of the workpiece on the back side.

T command

Turret tool post

: Specifies the amount of shift from the zero point for back machining with the Z3 axis.

Alarm

Back 3-spindle select (G633) Command code  Name

G633 Front/back parallel machining  –  Back 3-spindle select $2 $3

Axis control group Axes of axis control group

 – 

X3, Z3, C2

Coordinate system

 – 

Z3: Alignment with the machine coordinate

Argument

U0: The turret tool post (X2) does not move. W0: The back spindle (Z3) does not move. If the argument is not specified, the X2 If the argument is not specified, the Z3 axis moves to the return position. axis moves to the return position. W0: The turret tool post (Z2) does not move. I : Specifies the amount of shift from If the argument is not specified, the Z2 the zero point for back machining with axis moves to the position 5.0 mm away the Z3 axis. from the end face of the workpiece on the back side.

T command

Alarm

Turret tool post, back 3-spindle tool post, and back spindle

5-35

M3 Programming

Program sample

When machining a workpiece with a tool on the turret tool post before a tool on the back 3-spindle tool post: $1

: G630 ........... Front/back parallel machining T0200

G00 X12.0 Z–0.5 T02 G01 Z15.0 F0.1 : :

$2

: G630.......... Front/back parallel machining G632.......... Front/back parallel machining –  Back turret select T2100 G00 X9.0 Z–0.5 T21 G01 X12.0 Z1.0 F0.03 Z30.0 : G633.......... Front/back parallel machining –  Back 3-SP. select

$3

: G630 .......... Front/back parallel machining G632 .......... Front/back parallel machining –  Back turret select

G633 ........Front/back parallel machining –  Back 3-SP. select T4100 :

When machining a workpiece with a tool on the back 3-spindle tool post before a tool on the turret tool post: $1

: G630 ......... Front/back parallel machining T0200

$2

: G630......... Front/back parallel machining G633 ........Front/back parallel machining –  Back 3-SP. select

G00 X12.0 Z–0.5 T02 G01 Z15.0 F0.1 : :

G632......... Front/back parallel machining –  Back turret select G00 X9.0 Z–0.5 T21 Machining by T2100 :

5-36

$3

: G630 .......... Front/back parallel machining G633 .......... Front/back parallel machining –  Back 3-SP. select T2100........ Pre-selection of the tool T4100 G00 Z–0.5 G01 Z3.0 F0.1 T41 G00 Z–0.5 T00 : G632 .......... Front/back parallel machining –  Back turret select

M3 Programming

Notes 







 



Each axis control group should hold the feed per rotation command and feed per minute command as modal functions. Specify the main spindle speed command for $1. Specify the back spindle speed command for $2 or $3. You can create a $1 program similar to a 2-axis lathe p rogram assuming the end face of the workpiece on the front side to be the reference point. Likewise, you can create $2 and $ 3 programs similar to a 2-axis lath e program assuming the end face of the workpiece on the back side to be the reference point. G630 is a modal G code that is enabled until another machining pattern command is executed. Be sure to execute the G632 or G633 command for both $2 and $3 after executing the G630 command. With the G632 command, specify the back machining program for $2. With the G633 command, specify the back machining program for $3. Y2 axis is available for type V onl y.

5-37

M3 Programming

5.3.7 Front/back parallel machining (G635) Use this machining pattern to perform front machining and back machining independently. This machining pattern permits you to perform back machining by alternately using a tool on the turret tool  post and a tool on the back 3-spindle too l post. The specification in the back-machining program is different between G630 and G635: With G630, specify the turret for $2 and the 3-spindle for back machining for $3 in the program. With G635, specify both the turret and the 3-spindle for back machining for $2 in the program. Command format $1 G635

$2 $3 G635 U0 W0 V0 G635 U0 W0 I

Axis control groups Specify this command for all the axis control groups $1, $2, and $3. Arguments 

$2 U0:



$2 W0:



$2 V0:



$3 U0:



$3 W0:



$3 I

The turret tool post (X2 axis) does not move. If the argument is not specified, the turret tool post moves to the return position. The turret tool post (Z2 axis) does not move. If the argument is not specified, the turret tool post moves to the position 5.0 mm away from the end face of the workpiece on the  back side. The turret tool post (Y2 axis) does not move. If the argument is not specified, the turret tool post moves to the center of the main spindle. This argument is enabled only in the machine of type V. The back headstock (X3 axis) does not move. If the argument is not specified, the back headstock moves to the center of the guide bushing. The back headstock (Z3 axis) does not move. If the argument is not specified, the back headstock moves to the return position. : Specifies the amount of shift from the zero point for back machining with the Z3 axis. Specify the I argument when the Z2 axis stroke is too short for drilling with the tool on the turret tool post for back machining. The Z2 and Z3 axes shift by I argument.

This machining pattern automatically enters the queuing state. Cancel the coordinate system shift command and compensation command before executing the machining pattern command. If you specify the U0, W0 and V0 arguments in the block of the machining pattern command, each axis does not move to the fixed point when the machining pattern is switched. The axes automatically move to the positions shown in the figure below when the front/back parallel machining pattern command is executed. The axes for back machining move when the G637 or G638 command is executed. The same commands are necessary for machining that is performed by alternately using two types of tools.

5-38

M3 Programming

Back turret select (G637) Use this command to perform back machining with a tool on the turret tool post. machining program for $2.

Specify the back

Command format $2 G637 U0 W0

$3 G637 I

Axis control groups Specify this command for both $2 and $3. Arguments 

$2 U0:



$2 W0:



$3 I

The turret tool post (X2 axis) does not move. If the argument is not specified, the turret tool post moves to the return position. The turret tool post (Z2 axis) does not move. If the argument is not specified, the turret tool post moves to the position 5.0 mm away from the end face of the workpiece on the  back side. : Specifies the amount of shift from the zero point for back machining with the Z3 axis. Specify the I argument when the Z2 axis stroke is too short for drilling with the tool on the turret tool post for back machining. The Z2 and Z3 axes shift by I argument.

5-39

M3 Programming

Back 3-spindle select (G638) Use this command to perform back machining with a tool on the back 3-spindle tool post.  back machining program for $2

Specify the

Command format $2 G638 U0 W0

$3 G638 W0 I

Axis control groups Specify this command for both $2 and $3. Argument 

$2 U0:



$2 W0:



$3 W0:



$3 I

The turret tool post (X2 axis) does not move. If the argument is not specified, the turret tool post moves to the return position. The turret tool post (Z2 axis) does not move. If the argument is not specified, the turret tool post moves to the position 5.0 mm away from the end face of the workpiece on the  back side. The back headstock (Z3 axis) does not move. If the argument is not specified, the back headstock moves to the return position. : Specifies the amount of shift from the zero point for back machining with the Z3 axis. Specify the I argument when the Z2 axis stroke is too short for drilling with the tool on the turret tool post for back machining. The Z2 and Z3 axes shift by I argument. If the I argument is specified in the G638 command, the Z3 axis is not shifted the amount specified  by the argument.

Pre-selection of a tool A tool on the turret tool post can be pre-selected in the G635 mode. In G638 mode (back 3-spindle select), you can specify a tool (T2000's) on the turret tool post for selecting the tool while a tool on the back 3-spindle tool post is machining. To use the pre-selected tool on the turret tool post, switch the G638 mode to the G637 mode.

5-40

M3 Programming

Operation sample

Back turret select (G637) (1) The turret tool post (X2 axis) moves to its return position at the rapid feed rate. (2) The back headstock (Z3 axis) moves to t he return position at the rapid feed rate. The turret tool post (Z2 axis) moves to the position 5.0 mm away from the end face of the workpiece on the back side at the rapid feed rate. (3) The back headstock (X3 axis) moves to the center of the guide bushing and the back headstock (Z3 axis) moves to the zero point for back machining at the rapid feed rate. Comment [y13]: 05-23x2-1.wmf

X1

(2) Z3 axis (3) X3 axis (3) Z3 axis X3 axis Center of guide bushing Z3 axis Zero point for back machining

X2

Back spindle chuck pos ition (machining data)

5.0

X2 axis Return position of the tool on the turret tool post Z2 axis The position 5.0 mm away from the end face of the workpiece on the back side

 b

M12 80.0

256.0

Z1

(1) X2 axis (2) Z2 axis

(1) to (3) indicate the operation sequence. Z2

Distance between zero points on the Z2 and Z3 axes (d) ＋ Return position on the Z2 axis (c)

a

      a

M16 80.0

256.0

M20 90.0

346.0

b

Return position on the Z2 axis (c) (machining data) + 5.0mm

＋

Back spindle chuck position

M32 90.0

346.0

c

4.0

4.0

4.0

4.0

d

30.0

30.0

70.0

70.0

5-41

M3 Programming

Back 3-spindle select (G638) (1) The turret tool post (X2 axis) moves to its return position at the rapid feed rate. (2) The back headstock (Z3 axis) moves to t he return position at the rapid feed rate. The turret tool post (Z2 axis) moves to th e position 5.0 mm away from the end face of the workpiece on the back side at the rapid feed rate. The back headstock moves toward the back 3-spindle tool  post when the command for the tools T4000 's is executed. Comment [y14]: 05-24x2-1.wmf

X1

Z3 axis Return position X3 axis Does not move.

(2) Z3 axis

Back-end face of the workpiece when G637 (selection of tool on the turret tool post) is specified for $3

X3

      a

5.0

Z3

b

M16 80.0

M20 90.0

M32 90.0

 b

290.0

290.0

420.0

420.0

c

4.0

4.0

4.0

4.0

5-42

(1) and (2) indicate the operation sequence.

Return position on the Z2 axis (c) ＋ Back spindle chuck position (machining data) + 5.0mm

Z3 machine zero point

M12 80.0

Z1

(2) Z2 axis

X2 axis Return position of the tool on the turret tool post Z2 axis The position 5.0 mm away from the end face of the workpiece on the back side

a

(1) X2 axis

M3 Programming

Macro specification Command code  Name

G635 Front/back parallel machining

Axis control group

$1

$2

$3

Axes of axis control group

X1, Z1, Y1, C1

 – 

 – 

Superimpose

 – 

Cancel of Z2 superimposition

Cancel of Z3 superimposition

Coordinate system

 – 

 – 

 – 

U0: The turret tool post (X2) U0: T he back spindle (X3) does not move. If the does not move. If the argument is not argument is not specified, the X2 axis specified, the X3 axis moves to the return moves to the return  position.  position. W0: The turret tool post (Z2) W0: T he back spindle (Z3) does not move. If the does not move. If the argument is not argument is not specified, the Z2 axis specified, the Z3 axis moves to the return moves to the return  position.  position. V0: The turret tool post (Y2) I : Specifies the amount does not move. If the of shift from the zero argument is not  point for back specified, the Y2 axis machining with the Z3 moves to the center of axis. the main spindle.

Argument

Spindle with which synchronous feed is enabled

Main spindle

Back spindle

Back spindle

Spindle with which constant surface speed control is enabled

Main spindle

Back spindle

Back spindle

Cutting block interlock

Main spindle

Back spindle

Back spindle

T command

Gang tool post

Others

 – 

 –   – 

 –   – 

5-43

M3 Programming

Back turret select (G637) Command code

G637

 Name

Front/back parallel machining  –  Back turret select

Axis control group

$2

$3

Axes of axis control group

X2, Z2, Y2, C2

 – 

Coordinate system

Z2: Alignment of the back tool nose of the tool (on the turret tool post) with the end face of the workpiece on the back side.

X3: Alignment with the machine coordinate Z3: Alignment with the zero point for back machining

Argument

U0: The turret tool post (X2) does not move. I If the argument is not specified, the X2 axis moves to the return position. W0: The turret tool post (Z2) does not move. If the argument is not specified, the Z2 axis moves to the position 5.0 mm away from the end face of the workpiece on the back side.

T command

Turret tool post

: Specifies the amount of shift from the zero point for back machining with the Z3 axis.

Alarm

Back 3-spindle select (G638) Command code

 Name Axis control group Axes of axis control group Coordinate system

G638

Front/back parallel machining  –  Back 3-spindle select $2 $3 X3, Z3, C2

 – 

 – 

Z3: Alignment with the machine coordinate

Argument

U0: The turret tool post (X2) does not move. W0: The back spindle (Z3) does not move. If the argument is not specified, the X2 If the argument is not specified, the Z3 axis moves to the retract position. axis moves to the return position. W0: The turret tool post (Z2) does not move. I : Specifies the amount of shift from If the argument is not specified, the Z2 the zero point for back machining with axis moves to the position 5.0 mm away the Z3 axis. from the end face of the workpiece on the back side.

T command

Turret, back 3-spindle tool post, and back spindle

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Alarm

M3 Programming

Program sample

When machining a workpiece with a tool on the turret tool post before a tool on the back 3-spindle tool post: $1

: G635 ......... Front/back parallel machining T0200

G00 X12.0 Z–0.5 T02 G01 Z15.0 F0.1 : :

$2

: G635......... Front/back parallel machining G637......... Front/back parallel machining –  Back turret select T2100 G00 X9.0 Z–0.5 T21 G01 X12.0 Z1.0 F0.03 Z30.0 : G638......... Front/back parallel machining –  Back 3-SP. Select T4100 :

$3

: G635 ........ Front/back parallel machining G637 ........ Front/back parallel machining –  Back turret select

G638 ........ Front/back parallel machining –  Back 3-SP. select

When machining a workpiece with a tool on the back 3-spindle tool post before a tool on the turret tool post: $1

: G635 ......... Front/back parallel machining T0200

G00 X12.0 Z–0.5 T02 G01 Z15.0 F0.1 : :

$2

: G635......... Front/back parallel machining G638 ........Front/back parallel machining –  Back 3-SP. select T2100 ...... Pre-selection of the tool T4100 G00 Z–0.5 G01 Z3.0 F0.1 T31 G00 Z–0.5 T00 : G637......... Front/back parallel machining –  Back turret select G00 X9.0 Z–0.5 T21 Machining by T2100 :

$3

: G635 ........ Front/back parallel machining G638 ........ Front/back parallel machining –  Back 3-SP. select

: G637 ........ Front/back parallel machining –  Back turret select

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M3 Programming

Notes 

 



 



Each axis control group should hold the feed per rotation command and feed per minute command as modal functions. Specify the main spindle speed command for $1. Specify the back spindle speed command for $2. You can create a $1 program similar to a 2-axis lathe p rogram assuming the end face of the workpiece on the front side to be the reference point. Likewise, you can create $2 programs similar to a 2 -axis lathe program assuming the end face of the workpiece on the back side to be the reference point. G635 is a modal G code that is enabled until another machining pattern command is executed. Be sure to specify G637 or G638 for $2 and $3 after G635 specification. With G637 and G638, specify $2 in the back-machining program. Y2 axis is available for type V onl y.

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M3 Programming

5.3.8 Simultaneous 3-lines machining (G640) This machining pattern permits you to perform the machining of three processes (e.g., outer diameter machining, front center machining (drilling), and back center machining (drilling)). You cannot use this machining pattern for machining with tools on the back 3-spindle tool post. Command format $1

$2

$3

G640

G640 U0 W0 V0

G640 W0

Axis control groups Specify this command for all the axis control groups $1, $2, and $3. Arguments 







$2 U0:

The turret tool post (X2 axis) does not move. If the argument is not specified, the turret tool post moves to the return position. $2 W0: The turret tool post (Z2 axis) does not move. If the argument is not specified, the turret tool  post moves to the position 5.0 mm away from the end face of the workpiece on the front side. $2 V0: The turret tool post (Y2 axis) does not move. If the argument is not specified, the turret tool post moves to the center of the main spindle. This argument is enabled only in the machine of type V. $3 W0: The back headstock (Z3 axis) does not move. If the argument is not specified, the turret tool post moves to the position 5.0 mm away from the end face of the workpiece on the back side.

This machining pattern automatically enters the queuing state. Cancel the coordinate system shift command and compensation command before executing the machining pattern command. If you specify the U0, W0 and V0 arguments in the block of the machining pattern command, each axis does not move to the fixed point when the machining pattern is switched. The axes automatically move to the positions shown in the figure below when the simultaneous 3-lines machining pattern command is executed.

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M3 Programming

Operation sample (1) The turret tool post (X2 axis) moves to its return position at the rapid feed rate. (2) The turret tool post (Y2 axis) moves to the center of the main spind le at the rapid feed rate. The turret tool post (Z2 axis) moves to th e position 5.0 mm away from the end face of the workpiece on the front side at the rapid feed rate. The back headstock (Z3 axis) moves to the return position at the rapid feed rate. The back headstock (X3 axis) moves to the center of the guide bushing at the rapid feed rate. (3) The back headstock (Z3 axis) moves to t he position 5.0 mm away from the end face of the workpiece on the back side at the rapid feed rate. Comment [y15]: 05-30x1-1.wmf

X1 (2) Z3 axis (2) X3 axis (3) Z3 axis

X3 axis Center of guide bushing Z3 axis The position 5.0 mm away from the end face of the workpiece on the back side

X1 axis Does not move.

(1) X2 axis (3) Z2 axis (2) Y2 axis Z3

5.0

5.0

X2

Z2

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Z1

X2 axis Return position of the tool on the turret tool post Z2 axis The position 5.0 mm away from the end face of the workpiece on the front side Y2 axis Center of the main spindle of the tool on the turret tool post Y axis (1) to (3) indicate the operation sequence.

M3 Programming

Macro specification Command code  Name Axis control group Axes of axis control group Superimpose Coordinate system

Main spindle

G640 Simultaneous 3-lines machining $2 $3 X2, Z2, Y2 X3, Z3, C2 Z2 superimposed on Z1 Z3 superimposed on Z2 Z2: Alignment of the front X3: Alignment with the machine tool nose of the tool coordinate (on the turret tool post) Z3: Alignment of the back tool with the end face of the nose of the tool (on the turret workpiece on the front tool post) with the end f ace of side the workpiece on the back side U0: The turret tool post (X2) W0: The back spindle (Z3) does not move. If the argument is not does not move. If the specified, the Z3 axis moves to argument is not specified, the return position. the X2 axis moves to the return position. W0: The turret tool post (Z2) does not move. If the argument is not specified, the Z2 axis moves to the return position. V0: The turret tool post (Y2) does not move. If the argument is not specified, the Y2 axis moves to the center of the main spindle. Main spindle Back spindle

Main spindle

Main spindle

Back spindle

Main spindle Gang tool post

Main spindle Turret tool post

Back spindle Alarm

$1 X1, Z1, Y1, C1

 –   – 

Argument

Spindle with which synchronous feed is enabled Spindle with which constant surface speed control is enabled Cutting block interlock T command Others

 – 

 – 

 – 

Program sample $1

: : G640 ...... Simultaneous 3-lines machining !2!3L1 G01 Z15.0 F0.03 X10.0 Z20.0 : :

$2

: : G640 ................ Simultaneous 3-lines machining G00 X–5.0 Z–1.0 !1!3L1 G01 Z3.5 F0.03 G00 Z–1.0 : :

$3

: : G640 .................. Simultaneous 3-lines machining G00 Z–1.0 !1!2L1 G01 Z3.5 F0.03 G00 Z–1.0 : :

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M3 Programming

Notes 









 

Each axis control group should hold the feed per rotation command and feed per minute command as modal functions. Specify the main spindle speed command for $1 or $2. Specify the back spindle speed command for $3. You can create a $1 program similar to a 2-axis lathe p rogram assuming the end face of the workpiece on the front side to be the reference point. You can also create a $2 program similar to a 2-axis lathe program assuming the end face of the workpiece on the front side to be the reference point. Likewise, you can create a $3 program similar to a 1-axis lathe program assuming the end face of the workpiece on the back side to be the reference point. G640 is a modal G code that is enabled until another machining pattern command is executed. Y2 axis is available for type V onl y.

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M3 Programming

5.3.9 Pick-off, Center support (G650) Specify this machining pattern after alternate machining (G610), two-saddle machining (G620), and front/back parallel machining (G630). This machining pattern enables the back spindle to pick off workpiece and support the long workpiece. Command format $1

$2

$3

G650

G650 U0 V0

G650 W0

Axis control groups Specify this command for all the axis control groups $1, $2, and $3. Argument 

$2 U0:



$2 V0:



$3 W0:

The turret tool post (X2 axis) does not move. If the argument is not specified, the turret tool post moves to the return position. The turret tool post (Y2 axis) does not move. If the argument is not specified, the turret tool post moves to the center of the main spindle. This argument is enabled only in the machine of type V. The back headstock (Z3 axis) does not move. If the argument is not specified, the back headstock moves to the return position.

This machining pattern automatically enters the queuing state. Cancel the coordinate system shift command before executing the machining pattern command. If you specify the U0, W0 and V0 arguments in the block of the machining pattern command, each axis does not move to the fixed point when the machining pattern is switched. The axes automatically move to the positions shown in the figure below when the pick-off, center-support command is executed.

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M3 Programming

Operation sample (1) The turret tool post (X2 axis) moves to its return position at the rapid feed rate; and the back headstock (Z3 axis) moves to the return position at the rapid feed rate. (2) The turret tool post (Y2 axis) moves to the center of the main spin dle at the rapid feed rate. The back headstock (X3 axis) moves to the center of the guide bushing at the rapid feed rate. For the Z3 axis, the coordinate system is set with the end face of the workpiece on the front side as 0. Comment [y16]: 05-34x1-1.wmf

(1) Z3 axis X1

(2) X3 axis

X1 and Z1 Does not move.

X3 axis Center of guide bushing Z3 axis The coordinate system is set with the end face of the work iece on the front side as 0

a

(1) X2 axis Z1

Z3

(2) Y2 axis X2

X2 axis Return position of the tool on the turret tool post Z2 axis Does not move. Y2 axis Center of the main spindle of the tool on the turret tool post Y axis

M12

a

5-52

80.0

M16

80.0

M20

90.0

M32

90.0

(1) and (2) indicate the operation sequence.

M3 Programming

Macro specification Command code  Name

G650 Pick-off, center support

$1

Axis control group Axes of axis control group

Depending on the previous machining pattern

Superimpose Coordinate system

$2 Depending on the previous machining pattern

 –  Depending on the previous machining pattern

Argument

 – 

 –  Depending on the previous machining pattern

$3 X3, Z3, C2 Z3 superimposed on Z1 X3: Alignment with the machine coordinate Z3: Alignment of the face of the back headstock cap nut with the end face of the workpiece on the front side

U0: The turret tool post (X2) W0: T he back spindle (Z3) does not move. If the does not move. If the argument is not argument is not specified, the X2 axis specified, the Z3 axis moves to the return moves to the return  position.  position. V0: The turret tool post (Y2) does not move. If the argument is not specified, the Y2 axis moves to the center of the main spindle.

Spindle with which synchronous feed is enabled

Main spindle

Main spindle

Back spindle

Spindle with which constant surface speed control is enabled

Main spindle

Main spindle

Back spindle

Cutting block interlock

Main spindle

Main spindle

Back spindle

T command

Depending on the previous machining pattern

Depending on the previous machining pattern

Back spindle

Others

 – 

 – 

 – 

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M3 Programming

Program sample $1 $2 $3 G610 G610 G610 : : : : G99 M03 S1=1500 : T0100 : G00 Z85.0 T4000 ............................ Back spindle G650 ..................................... Pick-off G650......................................Pick-off G650 .....................................P ick-off G00 Z–2.0 M24 S2=1500 G98 G01 Z50.0 F1000 M15 !3L1 !1L1 G00 X17.0 G01 X–1.0 F0.03 G610 G610 G610 X–3.0 : : : : : :

Notes 

 



Execute the pick-off command (G650) after alternate machining (G610), two-saddle machining (G620), and front/back parallel machining (G630, G635). At this time, the machining patterns of $1 and $2 are held. Since the Z3 axis moves superimposed on the Z1 axis in the G750 mode, executing the axis move command for $3 moves the Z3 axis to the position determined by the Z1 axis workpiece coordinates. Position the Z1 axis at cut-off position before specifying the G650 command. During pick-off operation (G650), you can move the Z2 and Z3 axes to the fixed points of an arbitrary machining pattern by specifying the G231 command. See

. Y2 axis is available for type V onl y.

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M3 Programming

5.4 S Functions (S Codes) The S functions specified in the following formats are called speed functions. The S functions are used to specify the speeds of the main spindle, the back spindle, the tool spindle of the gang tool post, and the tool spindle of the turret tool post. Command format S1 = S2 = S3 = S4 = S6 =

Main spindle Back spindle Tool spindle of the gang tool post Tool spindle of the turret tool post Tool spindle of the back 3-spindle tool post

Calculate the spindle speed from the following formula. whole integer.

 N =

Error!

× 1000

 N: V: D: :

Round the calculation result to the nearest

Speed (min – 1) Cutting speed (m/min) Workpiece diameter (mm) (With drilling:

Hole diameter)

Circular constant (  3.14)

Command ranges of the S codes Spindle No.

Speed Name

M12

M16  – 1

M20  – 1

M32  – 1

200 to 8000min – 1

S1

Main spindle

200 to 12000min

200 to 10000min

200 to 10000min

S2

Back spindle

200 to 10000min – 1

200 to 10000min – 1 200 to 8000min – 1

200 to 7000min – 1

S3

Tool spindle of gang tool post

200 to 8000min – 1

200 to 8000min – 1 200 to 5000min – 1

200 to 5000min – 1

S4

Tool spindle of turret 200 to 6500min – 1 tool post

200 to 6500min – 1 200 to 5000min – 1

200 to 5000min – 1

S6

Tool spindle of back 3-spindle tool post

200 to 5000min – 1

200 to 5000min – 1 200 to 5000min – 1

200 to 5000min – 1

Note S6 (tool spindle of the back 3-spindle tool post) is optional.

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M3 Programming

5.5 T Functions (T Codes) The T function determines a tool position where the tool can machine the workpiece. T codes for tool selection are as follows. T0100 to T0900 are for tools on the gang tool post. T2000 to T3900 are for tools on the turret tool post. T4100 to T4300 are for tools on the back 3-spindle tool post. T4000 is for the back spindle. A tool is positioned by the "T" command. The queuing position of a tool on the gang tool post can be set arbitrarily as the "Tool Positioning Point (DIA)" in the machining data. To machine thin material, set at least about 0.2 mm for the tool queuing point. Specify the "T" command with a 4-digit number. The first two digits correspond to the tool number. The last two digits correspond to the compensation number. Specify 00 as a compensation number in the compensation cancel state. Command format T Argument  :

 :

Up to 33 tool numbers can be specified, which is the total of tools (01-09) on the gang tool  post, tools (20-3 9) on the turret too l post, tools (41- 43) on the back 3-spin dle tool post, and the back spindle (40). Compensation number of tool nose wear

Pre-selection of a tool with T code Ordinary T code selection calls the tool that is going to machine the workpiece. If the lathe has two or more tool posts, a tool on one tool post can be called while the tool on other tool post is machining the workpiece. This feature is called pre-selection. With the machining pattern G610, to pre-select a tool on the turret tool post (T2000's) in the G611 mode and a tool on the gang tool post (T0100's) in the G612 mode. With the machining pattern G630, to pre-select a tool on the turret tool post (T2000's) in the G633 mode. With the machining pattern G635, to pre-select a tool on the turret tool post (T2000's) in the G638 mode. For the machining patterns, see

.

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M3 Programming

Tools on the gang tool post T01

T03 T02

T04

T06

Comment [y17]: c84-1.wmf

T09

T07

T05

T08

Tools on the back 3-spindle tool post T43

T42

T41

Tools on the turret tool post T20 T29  3 9

T28

3     1    

    8     3

       6        3

     5      3

Back spindle

T26

T22

 3         2        

        7         3

T27

T21

3 0 

   3    4

  3   3

T23

T24 T25

T40

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M3 Programming

5.5.1 Tool mounting positions and the types of machining The following table shows the tool mounting positions and the types of machining when GTF5216 (standard tool holder for M12) is used:

Mounting position

Tool no.

Outer diameter machining

Gang tool post

01

T0100

02

T0200

03

T0300

04

T0400

05

T0500

06

 –    –    –    –    –   –   –   –   –   –   –   –   –   –   –   –   –   –   –   –   –   –   –   –   –   –   –   – 

07 08 09 Turret tool  post

20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39

Back spindle

40

Back 3-spindle tool  post

41

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42 43

Tool spindle

 –   –   –   –   –  T0600 T0700 T0800 T0900

 –    –    –    –    –    –    –    –    –    –    –    –    –    –    –    –    –    –    –    –    –   –   –   – 

Outer/inner diameter machining and Tool spindle

 –   –   –   –   –   –   –   –   –  T2000 T2100 T2200 T2300 T2400 T2500 T2600 T2700 T2800 T2900 T3000 T3100 T3200 T3300 T3400 T3500 T3600 T3700 T3800 T3900

 –    –   –   – 

Pick-off

 –   –   –   –   –   –   –   –   –   –   –   –   –   –   –   –   –   –   –   –   –   –   –   –   –   –   –   –   –  T4000

 –    –    –  

Inner diameter machining in back machining

 –   –   –   –   –   –   –   –   –   –   –   –   –   –   –   –   –   –   –   –   –   –   –   –   –   –   –   –   –   –  T4100 T4200 T4300

M3 Programming

5.5.2 Tools on the gang tool post Command format T Q1 H

X

Z

Y

A

K3 E

Argument Specify this argument to select a tool without moving the currently machining tool to the  positioning point. If the Q1 argument is not specified, the machine selects a tool after the currently machining tool moves to the position ("Tool Positioning Point (DIA)" + maximum DIA value of tool set data between current and next tool).



Q1:



H

:

Specify the distance by which the currently machining tool moves from the material outer diameter specified in the machining data. If the H argument is not specified, the tool moves to the position ("Tool Positioning Point (DIA)" + maximum DIA value of tool set data  between current and next tool).



X

:

Specify the X1 axis work coordinate after tool selection. the tool moves to the positioning point.

If the X argument is not specified,



Z

:

Specify the Z1 axis work coordinate after tool selection. the Z argument is specified.

The Z axis does not move unless



Y

:

Specify the Y1 axis work coordinate after tool selection. the tool moves to the work zero point.

If the Y argument is not specified,



A

:

This argument is valid for only pre-selection of a tool (T0100's) on the gang tool post when the G612 command is specified. If the X argument is specified, specify the Z1 work coo rdinate effective when the selected tool starts moving to the specified position in the direction of X1 axis. If the A argument is not specified, the machine moves the selected tool to the X1 axis regardless of the Z1 axis work coordinate.



K3:



E

The Z3 axis (back spindle) becomes the target Z axis after tool selection. The default target axis is the Z1 axis. Only a number in the T0100's of the machining pattern G600 or G611 can be selected. The C2 axis (back C axis) is enabled as the target C axis. To change the X axis and C axis back to the original target axes (Z1 and C1), execute G611 and G600. :

Specify this argument to index the main spindle during tool selection. The specification is valid at transition from the turning process to the secondary machining process. If the tool  pre-selection argument and the K3 argument are specified together, the specification is invalid.

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M3 Programming

What is a positioning point? Positioning point = value specified for "Bar Stock O.D." in the machining data + value specified for "Tool Positioning Point (DIA)" in the machining data + the DIA value of the tool set data of the specified tool

Positioning point Tool positioning point

Value specified for "Tool Positioning Point (DIA)" in the machining data Diameter value of the tool set data of the specified tool

Value specified for "Bar Stock O.D." in the machining data

Note Setting and calling of tools for secondary machining that are mounted on the gang tool post: Observe the following if a tool for secondary machining mounted on the gang tool post is beyond the tool nose reference position in the diametrical direction (direction of X1 axis):

Set the protrusion length from the tool nose reference position for the DIA value of the tool set data that corresponds to the tool number . In this case, you do not have to set the protrusion length from the tool nose reference position for the "Tool Positioning Point (DIA)" in the machining data. For the tool positioning point in the machining data, generally set about 1.0 mm, or set 1.0 mm or more depending on the tool to be mounted. After calling the tool mounted beyond the tool nose reference position, you do not have to shift the coordinate system of the diametrical direction in the program. The tool is moved to the positioning  point when the selection is completed.

5-60

Comment [ER18]: kz5-45.wmf

M3 Programming

Operation sample 

T (1) The currently selected tool moves to the position ("Tool Positionin g Point (DIA)" + maximum DIA value of tool set data between current and next tool) at the rapid feed rate. (2) While keeping the X1 axis at the position (1), the machine moves the specified tool to the position (Y1 axis) at the rapid feed rate. (3) The specified tool moves to the positioning point at the rapid feed rate. T0300 T0400

T0300 T0400

Comment [ER19]: word

T0300 T0400

T0300 T0400 Positioning

Material

(1) The currently (2) While keeping the (3) The specified selected tool moves position ("Tool tool moves to to the position Positioning Point the positioning point. ("Tool Positioning (DIA)" + maximum DIA Point (DIA)" + value of tool set data maximum DIA between current and value of tool set next tool), the machine data between moves the specified current and next tool to the position. tool).

Note If an end-face drilling tool is currently selected or specified, the specified tool moves from the current  position directly to the p ositioning poin t.



T Q1 (1) The specified tool moves from the current position directly to the positioning point at the rapid feed rate. Comment [ER20]: word

T0300 T0400 T0300 T0400 Positioning point

Material

(1) The specified tool moves from the current position directly to the positioning point.

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M3 Programming



T H (1) The currently selected tool moves to the position ("Bar Stock O.D." in the machining data + value (diameter) specified by the H argument) at the rapid feed rate. (2) While keeping the X1 axis at the position (1), the machine moves the specified tool to the position (Y1 axis) at the rapid feed rate. (3) The specified tool moves to the positioning point at the rapid feed rate. T 03 00 T0 40 0

Comment [ER21]: word

T 03 00 T0 40 0 T0300 T0400

T0300 T0400

H/2

Positioning point

Material (1) The currently selected tool moves to the position ("Bar  Stock O.D." + value specified by the H argument).



(2) While keeping the position "Bar Stock O.D." + value specified by the H argument, the machine moves the specified tool to the position.

(3) The specified tool moves to the positioning point.

T X (1) The currently selected tool moves to the position ("Bar Stock O.D."+ "Tool Positioning Point (DIA)" + maximum DIA value of tool set data between current and next tool) at the rap id feed rate. (2) While keeping the X1 axis at the position (1), the machine moves the specified tool to the position (Y1 axis) at the rapid feed rate. (3) The specified tool moves to the position specified by the X argument at the rapid feed rate. T0300 T0400 T0300 T0400 Positioning point

T0300 T0400

Comment [ER22]: word T0300 T0400

Position specified by the X argument

Material (3) The specified tool (1) The currently selected (2) While keeping the position ("Tool Positioning Point moves to the tool moves to the (DIA)" + maximum DIA value position specified position ("Bar Stock of tool set data between by the X argument. O.D."+ "Tool current and next tool), the Positioning Point (DIA)" machine moves the specified + maximum DIA value tool to the position. of tool set data).

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M3 Programming



T Y (1) The currently selected tool moves to the position ("Bar Stock O.D."+ "Tool Positioning Point (DIA)" + maximum DIA value of tool set data between current and next tool) at the rap id feed rate. (2) While keeping the X1 axis at the position (1), the machine moves the specified tool to the position specified by the Y argument (Y1 axis) at the rapid feed rate. (3) The specified tool moves to the positioning point at the rapid feed rate. T0300 T0400

T0300 T0400

T0300 T0400 Positioning point

Position specified by the Y argument

Comment [ER23]: word T0300 T0400

Material (1) The currently selected (2) The specified tool tool moves to the position (Y axis) moves to the ("Bar Stock O.D."+"Tool position specified by the Y argument. Positioning Point (DIA)" + maximum DIA value of tool set data).



(3) The specified tool moves to the positioning point.

T Z (1) The currently selected tool moves to the position ("Bar Stock O.D." + "Tool Positioning Point (DIA)" + maximum DIA value of tool set data between current and next tool) at the rap id feed rate. (2) While keeping the X1 axis at the position (1), the machine moves the specified tool to the position (Y1 axis) at the rapid feed rate. (3) The specified tool moves to the positioning point ("Bar Stock O.D." + "Tool Positioning Point (DIA)" + DIA value of tool set data of the specified to ol), and the Z1 axis moves directly to the  position specified by the Z argument at the rapid feed rate.

T0300

T0300 T0400

Comment [ER24]: word T0400

T0300

(1) The currently selected tool moves to the position ("Bar Stock O.D." + "Tool Positioning Point (DIA)" + maximum DIA value of tool set data).

(2) The specified tool (Y axis) moves to the position specified by the Y argument.

(3) The specified tool (X1 axis) moves to the positioning point, and the Z1 axis moves to the position specified by the Z argument.

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M3 Programming

5.5.3 Tools on the turret tool post Command format T X

Y

A

E

Arguments 

X

:

Specify the X2 axis work coordinate for positioning after tool selection. If the X argument is not specified, the tool on the turret tool post remains its return position.



Y

:

Specify the Y2 axis work coordinate for positioning after tool selection. If the argument is not specified, the Y2 axis moves to the center of the main spindle. This argument is enabled only in the machine of type V.



A

:

This argument is valid for only pre-selection of a tool (T2000's and T3000's in the G611 command). If the X argument is specified, specify the Z1 work coordinate effective when the selected tool starts moving to the specified position in the direction of X2 axis. If the A argument is not specified, the machine moves the selected tool to the X2 axis regardless of the Z1 axis work coordinate.



E

:

Specify this argument to index the front spindle or back spindle during tool selection. The specification is valid at transition from the turning process to the secondary machining  process. If the machining pattern is for machining with the front spindle, the front sp indle (C1 axis) is indexed. If the machining pattern is for machining with the back spindle, the  back spindle (C2 axis) is indexed.

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M3 Programming

Operation sample T00 When selection of a tool on the turret tool post is specified, the turret tool post moves to its return  position, and th e specified tool is selected. Comment [ER25]: word

T21

Turret



T21

Turret

(1) The turret tool post moves to its return position.



T24

Turret

(2) The specified tool is selected. When the X and Yargument are specified, the X and Y axis are also positioned after tool selection.

Note When the turret tool post is clamped/unclamped, the tool nose on the turret tool post does not usually move because the Z2 axis and TI axis operate under superimpose control in the longitudinal direction: the Z2 axis moves  –   4.0 mm and the TI axis moves + 4.0 mm. However, the Z2 axis does not move when it is between the machine zero point and the Z2 axis return position (4.0 mm). Consequently, when the turret tool post is unclamped, the tool nose moves about 4.0 mm (equivalent to the move distance of the TI axis) in the longitudinal direction.

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M3 Programming

5.5.4 Tools on the back 3-spindle tool post Command format

T X

Z

W

Q1 E

Arguments



X

:

Specify the X3 axis work coordinate for positioning after tool selection. is not specified, the tool moves to X0.



Z

:

Specify the distance (Z3 axis) by which the currently machining tool moves from the return  position. If the Z argument is not specified, the back spindle Z3 axis moves away 5.0 mm from the tool bit position at the maximum protrusion, and then the machine selects the target tool.



W

:

Specify the distance (Z3 axis) by which the currently machining tool moves from the current  position. If the W argument is not specified, the back spindle Z3 axis moves away 5.0 mm from the tool bit position at the maximum protrusion, and then the machine selects the target tool. For the W argument, you can specify only a value up to zero.



Q1



E

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If the X argument

The specified tool is selected without the back spindle Z3 axis (of the currently machining tool) being retracted. If the Q1 argument is not specified, the back spindle Z3 axis moves away 5.0 mm from the tool bit position at the maximum protrusion. :

Specify this argument to index the back spindle (C2 axis) during tool selection. The specification is valid at transition from the turning process to the secondary machining  process.

M3 Programming

Operation sample T W When selection of a tool on the back 3-spindle tool post is specified, the back headstock moves only the distance specified by the W argument, and the specified tool is selected. Comment [ER26]: word

Distance specified by the W argument

T43

T42

T41 Workpiece Zero point for back machining Back Spindle Chuck POS a

a

M12 60.0 (50.0)

M16 60.0 (50.0)

M20 M32 145.0 (135.0) 145.0 (135.0)

 Note: Values for the machine with the optional tool spindle of back 3-spindle too l post, S6, are enclosed in parentheses. Notes  

An alarm is issued if a value specified for the W argument is not up to zero. You cannot specify the Z and W arguments together.

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