Auto CAD Lab Manual by Shrungare R R

Lab Manual in Auto-Cad - By Er.Shrungare R.R.

Department of mechanical engg. BSIET,Kolhapur. BSIET,Kolhapur.

CAD assignment

Overview: Computer-Aided Design (CAD) technology has nowadays become part and parcel of a design activity in a range of sectors including product design, interior design, architecture, production layout, just to mention but a few. One of the most widely widel y used commercial CAD package is Autodesk is Autodesk AutoCAD . With this software package one can create two-dimensional (2D) drawings and rendered three-dimensional (3D) virtual models. Another technology which is being widely used is Rapid Prototyping (RP) which generates physical prototypes directly from CAD data. Imagine that you can hold a physical model in your hands just a few hours or even minutes, after you created a 3D CAD model of your design idea in CAD! This 60 hours course offers the basic training required to generate 2D drawings 3D virtual models using AutoCAD using AutoCAD..

Who should attend? This course is intended to anyone who is seeking to acquire skills in basic 2D and 3D modeling features of AutoCAD, of AutoCAD, and who is interested in understanding how physical models can be obtained directly from CAD. In particular the course is suitable for anyone working in one of the following areas: architecture, interior design, product design, building services and manufacturing.

Benefits to you in future carrier: The course will prepare you to sit for the Solid modeling (CAD/CAM). The course will equip you with skills on how to create professional 2D drawings and provide you with the foundations to create 3D models. Having personnel trained on these aspects, will certainly be of a great benefit to employers. Companies will get the know, how to efficiently and rapidly communicate the design solution being developed to their clients, by means of professional drawings and 3D physical models.

Learning outcomes: By the end of this course, students should be able to: •

Get acquainted with the graphical user interface of AutoCAD

•

Understand and apply the basic 2D drawing and modify commands in AutoCAD

•

Apply different selection methods and tools

•

Understand how to manipulate 2D and 3D objects

•

Understand how to annotate a 2D drawing with dimensions, text etc.

•

Create layers and blocks

•

Create 3D models by applying the relevant AutoCAD functions

•

Acquire knowledge on how to exchange drawings and 3D models using neutral file

•

Plot and print a 2D drawing to scale

•

Acquire knowledge on how to prepare a 3D CAD model for rapid prototyping

•

Understand the basic steps required to obtain a physical model on a 3D printer

Blog ID - www.shrungare3112.blogspot.in Mail ID - [email protected]

formats

Contact no: 9404395896; 9011793757

Department of mechanical engg. BSIET,Kolhapur. BSIET,Kolhapur.

CAD assignment

COURSE SYLLABUS:


Contact no: 9404395896; 9011793757

Department of mechanical engg. BSIET,Kolhapur.

CAD assignment

Course Name : Mechanical Engineering Group Course Code

: AE/ME/PG/PT/MH/MI/FE

Semester

: Third

Subject Title

: Computer Aided Drafting

Subject Code : 17016 Teaching and Examination Scheme Teaching Scheme Examination Scheme

Teaching Scheme

Examination Scheme

TH

TU

PR

01

--

04

PAPER HRS --

TH

PR

OR

TW

TOTAL

--

50#

--

25

75

Rationale:

Now a day a manual drafting is obsolete in industry. Computers being the inevitable part in an engineer’s life due to its inbuilt characteristics which helps him to do various task with acceleration. Using computers and CAD software it is easy to create and modify drawings ultimately it saves time. It also may be useful to generate assembly and manufacturing drawings. In mechanical industry operating skills are required for computer aided drafting operations of machine components, handling of printers & plotters. This subject is also useful to apply concepts in 3 D modeling.

General Objectives:

Students will be able to 1) Draw, edit and modify 2D drawings. 2) Give dimensions, tolerances and geometrical tolerances. 3) Draw Isometric drawing and 3 D drawing. 4) Plot a drawing.


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CAD assignment

Topic and Content

Hours

1: Introduction to Computer Aided Drafting

02 Hours

Specific Objectives: 

Understand and use basics of CAD systems.

Content: 1.1 Introduction to Computer Aided Drafting (CAD) - Applications, Various Soft wares for CAD

02

1.2 Co-ordinate system - Cartesian & Polar-Absolute, Relative mode. 1.3 CAD initial settings commands - Snap, grid, ortho, osnap, limits, units, filters, ltscale, mbuttonpan 1.4 Object Selection methods – picking, window, crossing, fence, last, previous etc. 2: Zoom and formatting Commands

02 Hours

Specific Objectives :  

View drawing. Format drawing entities.

02

Content: 2.1 Zoom Commands – all, previous, out, in, extent, realtime, dynamic, window, pan. 2.2 Formatting commands - Layers, block, linetype, lineweight, color. 3: Draw and Enquiry commands

02 Hours

Specific Objectives:  

Draw 2 D drawings Measure length and area

02

Content: 3.1 Draw Command - Line, arc, circle, rectangle, polygon, ellipse, spline, block, hatch 3.2 Enquiry commands - distance, area 4: Edit and Modify commands

03 Hours

Specific Objectives : 

Rectify 2 D drawings.



Modify 2 D drawings

03

Content: 4.1 Modify Command - Erase, oops, break, trim, copy, move, mirror, offset, fill et, chamfer, array,

extend, rotate, scale, lengthen, stretch, measure, divide, explode, align. 4.2 Grips editing - Move, Copy, Stretch. 5: Dimensioning, Text and Plot Commands

03 Hours


Apply dimensions.



Write text or remarks.


03

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

CAD assignment

Plot a drawing.

Content: 5.1 Dimensioning commands - Dimension styles, Dimensional Tolerances and Geometric Tolerances. 5.2 Text commands - dtext, mtext command. 5.3 Plotting a drawing - paper space, model space, creating table, plot commands. 6: Isometric and 3D Drawings

04 Hours


Draw and modify 3 D drawings.



Find materials mass property.



Draw isometric drawings.

Content: 6.1 3D Edit Commands -Pline, 3Dpoly, pedit, join splinedit commands.

04

6.2 View Commands - View ports, UCS, WCS commands 6.3 3D Object and 3D operations – 

3 D Object - Cube, Cylinder, Cone, Sphere, and Wedge.



3 D operations - extrude, revolve, 3Dmirror, 3Dmove, 3Dpan, 3Drotate, 3Darray, slice, sweep.



Boolean operations – union, subtract, intersection. Using Isometric style option of snap

command draw isometric drawing 6.4 Shade and Enquiry commands – mass property, Shade and render command. TOTAL

List of Practical’s:

1. Set the initial view. 2. Use of Draw command. 3. Use of Edit command. 4. Use of Modify command. 5. Apply dimensions. 6. Draw Isometric drawing. 7. Draw 3 D drawings. 8. Plotting of drawings on A2/A3 size sheet.


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16


CAD assignment

Commands key board short cuts:


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CAD assignment

Draw Tools:

SR NO. COMMAND SHORT CUT

COMMENT

1.

Line

L

Draw a line

2.

Polyline

PL

Draw a Polyline

3.

polygon

POL

Draw a regular polygon 3 to 1024 sides

4.

Rectangle

REC

Draw a rectangle

5.

Arc

A

Draw an arc between 2 intersecting lines

6.

Circle

C

Draw a circle

7.

Ellipse

EL

Draw an ellipse

8.

Block

B

Opens block dialogue box in order to make a block

9.

Table

TB

Opens insert a table dialogue box

10.

Point

PO

Point marker

11.

Hatch

H

Opens hatch and gradient dialogue box

12.

Text

MT

Multi-line text

Modify Tools: SR NO. COMMAND SHORT CUT COMMENT

13.

Erase

E

Erase selection

14.

Copy

CO

Copy an object

15.

Mirror

MI

Mirror an object

16.

Offset

O

Offset an object by distance

17.

Array

AR

Make multiple copies of an object

18.

Move

M

Move an object

19.

Rotate

RO

Rotate an object

20.

Scale

SC

Scale an object

21.

Stretch

S

Stretch an object

22.

Lengthen

LEN

Lengthen or shorten a line

23.

Trim

TR

Trim objects

24.

Extend

EX

Extend a line to meet another


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CAD assignment

25.

Break

BR

Break a line by defining 2 points

26.

Join

J

Joins 2 objects to form single object

27.

Chamfer

CHA

Chamfer between two non parallel lines

28.

Fillet

F

Draw an arc between 2 intersecting lines

Diamension Tools : SR NO. COMMAND SHORT CUT

COMMENT

29.

Linear

DLI

Linear dimension

30.

Align

DAL

Aligned linear dimension line

31.

Arc length

DAR

Arc length dimension

32.

Ordinate

DOR

Ordinate point dimension

33.

Radius

DRA

Radial dimension for circles and arcs

34.

Diameter

DDI

Diameter dimension for circles and arcs

35.

Angular

DAN

Angular dimension line

36.

Base line

DBA

Ordinate dimension from baseline of previous dimension

37.

Continue

DCO

38.

Distance

DIST

39.

Centre

DIMCENTER Creates center mark

40.

Override

DOV

Ordinate dimension from 2nd extension line of previous dimension Check a distance

Override dimension style

Function Keys: SR NO. COMMAND

41. 42.

HELP TEXTSCR GRAPHSCR

SHORT CUT COMMENT

F1

Opens AutoCAD help

F2

Switches between text screen and graphic area

43.

OSNAP

F3

Switches OSNAP on/off

44.

ISOPLANE

F5

Cycles through ISOPLANES

45.

COORDS

F6

Turns COORDINATE display on/off

46.

GRID

F7

Turns GRID on/off


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CAD assignment

47.

ORTHO

F8

Turns ORTHO on/off

48.

SNAP

F9

Turns SNAP on/off

49.

POLAR

F10

Turns POLAR on/off

50.

OSNAP TRACK F11

Turns OBJECT SNAP TRACKING on/off

51.

DYNMODE

Turns DYNAMIC INPUT on/off

F12

Text Tools: SR NO. COMMAND

SHORT CUT COMMENT

52.

Ø

%%C

Diameter dimensioning symbol

53.

°

%%D

Degrees symbol

54.

OVERSCORE %%O

Toggles overscore mode on/off

55.

±

%%P

Plus/minus symbol

56.

DDEDIT

ED

Edit text

57.

SCALETEXT

SCALETEXT

Scales text without moving the text insertion point

58.

STYLE

ST

Opens text style dialogue box

59.

MTEXT

MT

Multiline/paragraph text

60.

TORIENT

TORIENT

Rotates text, mtext, and attribute definition objects

Three Dimensional - 3d Tools: SR NO. COMMAND SHORT CUT COMMENT

61.

3D

3D

Command line 3D solid options

62.

BOX

BOX

Draw a cube

63.

CYLINDER

CYLINDER

Draw a cylinder

64.

DDUCS

DDUCS

Opens ucs dialogue

65.

EXTRUDE

EXT

Extrude a face

66.

INTERSECT

IN

Intersect an object


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CAD assignment

67.

REVOLVE

REV

Revolves an object about an axis

68.

SLICE

SL

Slice a solid

69.

SUBTRACT

SU

Subtract selection from solid

70.

TORUS

TOR

Draw torus shape

71.

UNION

UNI

Union solids

72.

WEDGE

WE

Draw a wedge


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CAD assignment

COMMANDS HELP


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CAD assignment

1) LINE

Draw – line – click first point – give require length – TAB – give require angle – enter – enter. 2) RECTANGLE:

Draw – rectangle – click first point – give require length – TAB – give require height – enter. 3) CIRCLE:

Draw – circle – click center point – give require radius – enter. 4) COPY:

Modify – copy – select object to copy – entre – select base point – select second point – esc. 5) MIRROR:

Modify – mirror – select object to mirror – entre – click first point of mirror line – click second point of mirror line – entre. 6) OFFSET:

Modify – offset – give offset distance – entre – select object to offset – select side to offset – esc 7) MOVE:

Modify – move – select object to move – entre – select base point – select second point – esc. 8) ROTATE:

Modify – rotate – select object to rotate – entre – select base point – give angle of rotation – enter. 9) SCALE:

Modify – scale – select object to scale – entre – select base point – give scale factor – entre. 10 )

TRIM:

Modify – trim – SPACE – select line to be trim – enter. 11 )

EXTEND:

Modify – extend – SPACE – select line to be extend – enter.


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12 )

CAD assignment

FILLET:

Modify – fillet – type R – entre – give fillet radius – entre – select first line – select second line.

VARIOUS MODE SETTING: 1. Snap mode : ON OFF 2. Grid display : ON OFF 3. Ortho mode : ON - allows only vertical & horizontal lines OFF – allows inclined lines also. 4. Polar tracking : ON - gives track of angles set in setting of polar tracking. OFF – does not give any track. 5. Object snap : ON - highlights snap points (control points) like end point, midpoint, center point etc. OFF – does not highlight any snap points. 6. Object snap tracking : ON - gives track of points set in setting of object snap. OFF - does not give any track 7. Allow/disallow dynamic UCS : ON OFF 8. Dynamic input : ON - displays message (command help) on screen regarding command in use. OFF – does not display any message on screen. 9. Show/hide line weight : ON - shows weight of line if applied. OFF – does not shows weight of line if applied. 10. Quick properties : ON - shows properties of selected object. OFF – does not show properties of selected object


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CAD assignment

2D DRAWINGS


Contact no: 9404395896; 9011793757

225.00

67.50

45.00

22.50 45.00

67.50

33.75

DR. BAPUJI SALUNKHE INSTITUTE OF ENGINEERING & TECHNOLOGY, KOLHAPUR DRAWING NAME :

DRAWING No. :

SQUARE COW

DRAWN BY :

ON DATE :

ROLL No. :

CHECKED BY :

Er. Shrungare R.R.

ON DATE :

SCALE :

NOTE 

ALL DIAMENSIONS ARE IN mm



UNSPECIFIED CHAMFERS 1x45



ANY MISSING DIAMENSION CAN BE ASSUME

150.00

40.00 65.50

2 X R5.00 8.00

25.40 38.10

76.20

95.25 120.81


DRAWING No. :

SQUARE COW

DRAWN BY :

ON DATE :

ROLL No. :

CLASS :

CHECKED BY :

Er. Shrungare R.R.

ON DATE :

SCALE :

NOTE 








0.50 1.00

1.50

2.00

1.00 3.00 1.25 1.50 0.50

0.50

4.00

DR. BAPUJE SALUNKHE INSTITUE OF ENGINEERING & TECHNOLOGY,KOLHAPUR DRAWING No. : 3

DRAWING NAME : CIRCLE PLATE

DRAWN BY :

ON DATE :

ROLL No. :

CLASS :

CHECKED BY : Er. Shrungare R.R.

ON DATE :

SCALE :

NOTE 








5.000 1.000

5x

0.833 R0.125

1.000

0.875

0.375 0.375 0.375

2.375

0.250

1.500


DRAWING NAME : SLOTTED PLATE

DRAWN BY :

ON DATE :

ROLL No. :

CLASS :


ON DATE :

SCALE :

NOTE 








4x 4x

4x

50.000

DR. BAPUJE SALUNKHE INSTITUE OF ENGINEERING & TECHNOLOGY,KOLHAPUR

100.000

DRAWING No. :5

DRAWING NAME : ANCHOR PLATE

DRAWN BY :

ON DATE :

ROLL No. :

CLASS :


ON DATE :

SCALE :

NOTE 








4x

4x 4x


DRAWING NAME : OFEST PLATE

DRAWN BY :

ON DATE :

ROLL No. :

CLASS :


ON DATE :

SCALE :

NOTE 









DRAWING No. :7

GAS KET

DRAWN BY :

ON DATE :

ROLL No. :

CHECKED BY :

Er. Shrungare R.R.

ON DATE :

SCALE :

NOTE 









DRAWING NAME : GEAR ARM

DRAWN BY :

ON DATE :

ROLL No. :

CLASS :


ON DATE :

SCALE :

NOTE 








DR. BAPUJI SALUNKHE INSTITUTE OF ENGINEERING & TECHNOLOGY, KOLHAPUR DRAWING No. : DRAWING NAME :

DRAWN BY :

ON DATE :

ROLL No. :

CHECKED BY :

Er. Shrungare R.R.

ON DATE :

SCALE :

NOTE 




UNSPECIFIEDCHAMFERS1x45



ANYMISSINGDIAMENSIONCANBE ASSUME


DRAWN BY :

ON DATE :

ROLL No. :

CHECKED BY :

Er. Shrungare R.R.

ON DATE :

SCALE :

NOTE 








R5.00 R2.50

15.00 R1.50 R1.00 8.00

4.00

3.00

4.00 3.00

20.00


DRAWN BY :

ON DATE :

ROLL No. :

CLASS :

CHECKED BY :

ON DATE :

Er. Shrungare R.R.

SCALE :

NOTE 









DRAWN BY :

ON DATE :

ROLL No. :

CHECKED BY :

Er. Shrungare R.R.

ON DATE :

SCALE :

NOTE 









DRAWN BY :

ON DATE :

ROLL No. :

CHECKED BY :

Er. Shrungare R.R.

ON DATE :

SCALE :

NOTE 









DRAWN BY :

ON DATE :

ROLL No. :

CHECKED BY :

Er. Shrungare R.R.

ON DATE :

SCALE :

NOTE 









DRAWN BY :

ON DATE :

ROLL No. :

CHECKED BY :

Er. Shrungare R.R.

ON DATE :

SCALE :

NOTE 









DRAWN BY :

ON DATE :

ROLL No. :

CHECKED BY :

Er. Shrungare R.R.

ON DATE :

SCALE :

NOTE 








40.00

50.00

25.00

R12.50

40.00

95.00


DRAWN BY :

ON DATE :

ROLL No. :

CHECKED BY :

Er. Shrungare R.R.

ON DATE :

SCALE :

NOTE 









DRAWN BY :

ON DATE :

ROLL No. :

CHECKED BY :

Er. Shrungare R.R.

ON DATE :

SCALE :

NOTE 









DRAWN BY :

ON DATE :

ROLL No. :

CHECKED BY :

Er. Shrungare R.R.

ON DATE :

SCALE :

NOTE 









DRAWN BY :

ON DATE :

ROLL No. :

CHECKED BY :

Er. Shrungare R.R.

ON DATE :

SCALE :

NOTE 








Chapter 8 Exercises - Mechanical Engineering

AutoCAD 2000 Instructor

CHAPTER 8 EXERCISES 1. Polylines

Use the Pline command to complete the drawing shown in Figure ME8-1. The Pline should be continuous and the R2.00 radius is created with the Pline Arc option. SaveAs CH8EX1-M. Figure ME8-1

Figure ME8-2

2. Plate

Complete the drawing of the plate in Figure ME8-2. Use the Line command and begin at point 2,2. The center of the 4.50 diameter Circle is obtained by calculating the distance starting at 2,2. (For example, the X value would be 2 + 1 + 2.5 = 5.5 and the Y value would be 2+1+1.5 = 4.5.) Add the additional Circles using the same method. SaveAs CH8EX2-M.

Copyright 2000 The McGraw-Hill Companies. All rights reserved.


AutoCAD 2000 Instructor 3. Hinge Bracket

Complete the drawing of the hinge bracket in Figure ME8-3. It may be helpful to draw some construction lines in order to position the Arcs correctly. Erase the construction lines when the Arcs are complete. The outer two object lines are drawn using the OSNAP Tangent option from the large Circle on the right to the outer Arc on the left. SaveAs CH8EX3-M. Figure ME8-3

4. Hinge

Figure ME8-4

Complete the drawing of the hinge in Figure ME84. Use whatever coordinate entry method you prefer. Do not include any dimensions or text. SaveAs CH8EX4-M.




CHAPTER 9 EXERCISES 1. Stretch Command

Open drawing ME8EX3 from Chapter 8. Use the Stretch command to increase the length of the part as shown in Figure ME9-1. SaveAs CH9EX1-M. Figure ME9-1

2. Spacer Plate

Complete the drawing of the Spacer Plate in Figure ME9-2A. Use the Scale command to increase the size of the part to double the drawn size as shown in Figure ME9-2B. Use 0,0 for the “base point.” SaveAs CH9EX2-M.

Figure ME9-2A

Figure ME9-2B




3. Pump Gasket

Complete the drawing of the Pump Gasket in Figure ME9-3A. When complete, use the Rotate command to revolve the part 90 degrees as shown in Figure ME9-3B. SaveAs CH9EX3-M. Figure ME9-3B

Figure ME9-3A

Figure ME9-4A

4. Tension Rod Eyelet

Complete the drawing of the tension rod eyelet in Figure ME9-4A. SaveAs CH9EX4-M. Use the Stretch command to decrease the length as shown in Figure ME94B. (HINT: Draw the Stretch window to cross the central section of the rod.) Next, use Scale to decrease the inner shape of the head of the part as shown. (HINT: Select all four objects comprising the inner shape. Use a “base point” midway between points A and B as indicated in Figure ME9-4A.) SaveAs CH9EX5-M.

Figure ME9-4B




CHAPTER 10 EXERCISES 1. Pulley

Draw one side of the pulley shown in Figure ME10-1. Use the Mirror command to complete the other side (see Figure ME10-2). Save the drawing as PULLEY. Figure ME10-1

Figure ME10-2

2. Spur Gear

Complete the diagram of the spur gear shown in Figure ME10-3. Use the Array command with the Polar option to create 36 teeth around the entire circle. Save the drawing as SGEAR. Figure ME10-3




3. Ventilation Panel

Complete the drawing of the ventilation panel in Figure ME10-4. Use the Array command with the Rectangular option to create a total of 8 rows and 5 columns. Save the drawing as VENTPNL. Figure ME10-4

4. Filter

Draw the filter shown in Figure ME10-5. Use the Chamfer command to create the 45 corners on the inner and outer rectangles. Complete the filter by using a Rectangular Array to create 7 rows and 12 columns of the .28 diameter holes. Save the drawing as FILTER. Figure ME10-5




CHAPTER 11 EXERCISES 1. Zoom, Pan

Open the R300-20.DWG drawing file supplied with AutoCAD 2000. It is normally located in the C:/Program Files/Acad2000/Sample folder. Activate the Model tab. Next, use Zoom Extents to display the model completely on your screen. Next use Zoom Window and select an area around the completed assembly (located in the lower-left corner of the drawing). Next, Zoom with the All option, then Zoom in to the same area as before using realtime Zoom and Pan (if you have a wheel mouse, use the wheel to accomplish this). Do not exit or save the drawing.

2. View

In this exercise, you will save the view that you generated in Exercise 1. Use the View command to produce the Views dialog box. Select the Named Views tab, then the New button. Enter ASSEMBLY as the new name and select OK . Next, Zoom, All. Then Zoom into the spring (yellow) located near the center of the exploded view assembly. Save this view using the same method as before and assign the name SPRING. Zoom, All once more. Using the View dialog box, restore the ASSEMBLY view and the SPRING view to ensure they are properly saved. Do not exit or save the drawing.

3. Viewres , Syswindows

With the R300-20 drawing open, also Open the SINGLE CAVITY MOLD drawing located in the Sample folder. Activate the Model tab. Notice that four views have been created in this one drawing. Zoom in to the drawing on the left. Zoom in further to display the text (red) in the upper-left corner of the drawing that says “VENT TYP AS SHOWN .002….” Pan slightly to display the fastener above the text (black and blue). Does it appear as three polygons (hexagons or octagons) in continuous lines? Type in VIEWRES and change the value to 2000 to display the fastener as three circles with both continuous and hidden lines. Finally, use the Syswindows command (or Window pull-down menu) with the Tile Vertically option to display both drawings on the screen simultaneously. Finally, Close the R300-20 drawing but do not save changes.

4. Vports

With the SINGLE CAVITY MOLD drawing still open, maximize the drawing window within the AutoCAD drawing area. Make sure the Model tab is active. Next, Zoom All. Use the Vports command to produce the Viewports dialog box. Select Four: Equal viewports. Doubleclick in the upper-left viewport and use Zoom Window to zoom in to and display only the drawing on the far left. Use Zoom Window in the other three viewports to display the other three drawings, each in a different viewport. When finished, Close, but do not save the drawing.




CHAPTER 12 EXERCISES Figure ME12-1

1. Packing Gland

Complete the drawing shown in Figure ME12-1. Create separate Layers for the center and hidden lines. Set the Ltscale to an appropriate value for the drawing. Save the drawing as CH12EX1-M.

2. Adjusting Rod

Figure ME12-2

Complete the diagram of the adjusting rod shown in Figure ME12-2. Use the Copy and Rotate commands to create the alternate position of the part. Create a separate Layer called Phantom with the appropriate Linetype and place these lines on that layer. Save the drawing as CH12EX2-M.




Figure ME12-3

3. Gasket

Complete the drawing of the gasket shown in Figure ME12-3. Create separate Layers for the different Linetypes (object lines and the center lines) but do not draw the dimensions. Set the Ltscale to an appropriate value for a metric drawing. Set the object line layer to a Lineweight of .40mm or 0.016”. Toggle the LWT button on the Status bar to ensure the lineweights appear in the drawing. Save the drawing as CH12EX3-M.

4. Linetype Applications

Complete the diagram in Figure ME12-4. Create separate Layers for the different Linetypes (object lines, center lines, phantom lines, etc.). Set the Ltscale to an appropriate value for the drawing. Set a Figure ME12-4 Lineweight of .40mm or 0.016” for all layers except the center lines, hidden lines, and chain line. Toggle the LWT button on the Status bar to ensure the lineweights appear in the drawing. Estimate all dimensions which are not given. Do not create the dimensions or text in your drawing. Save the drawing as CH12EX4-M.




CHAPTER 13 EXERCISES 1. Metric Drawing Setup

Create a template drawing for use in metric drawings to be plotted at a scale of 1 to 1. Begin a New drawing and Start from Scratch ; use the Metric default settings. Next, follow the steps listed below. A. Set Units to Engineering and Precision to 0. B. Set Limits for a B-size sheet (11x17). To convert from inches to millimeters multiply by 25.4 to achieve Limits of 431.8,279.4, then Zoom All. C. Set Grid and Grid Snap to 10. D. Load the Center2, Hidden2, and Phantom2 Linetypes. E. Create the following Layers and change their Color , Linetype, and Lineweight as indicated. OBJECT CENTER PHANTOM HIDDEN

continuous center phantom hidden

red yellow blue magenta

0.40mm Default Default Default

F. Save the drawing as METRIC-B.

2. Mechanical Engineering Drawing Setup Using the Quick SetupWizard

Create a template for a drawing to be plotted on C-size paper at a scale of 3/4“ = 1”. Use the Quick Setup Wizard to assist with the following setup. (Make sure the new drawing is based on the template ACAD.DWT.) A. B. C. D. E. F. G.

In the Units section select Decimal. In the Area section specify 29.3 and 22.7, then select the Finish button. Zoom All. Set Grid Snap to .25. Set Ltscale to 1.33. Load the Center2, Hidden2, and Phantom2 Linetypes. Create the following Layers and assign the Color , Linetype, and Lineweight as indicated. OBJECT CENTER PHANTOM HIDDEN



0.016” Default Default Default

H. Save the drawing as MECH3-4 -C . 3. Architectural Drawing Setup

Create a template for an architectural drawing to be plotted on B-size paper at a scale of 1/4“ = 1”. Use Start from Scratch , with the English default settings. Continue using the following setup. Copyright 2000 The McGraw-Hill Companies. All rights reserved.



A. Set the Units to Architectural. B. Set the Limits to 72’,48’, then Zoom All. C. Set Grid to 12 and Grid Snap to 12. D. Set Ltscale to 48. E. Load the Center2, Hidden2, and Phantom2 Linetypes. F. Create the following Layers and assign the Color , Linetype, and Lineweight as indicated. OBJECT CENTER PHANTOM HIDDEN




G. Save the drawing as ARCH1-4-B.

4. Civil Engineering Drawing Setup Using the Advanced Drawing Setup Wizard

Create a template drawing using the Advanced Drawing Setup Wizard. The template is for a 1”=20’ drawing using feet and decimal feet on an engineering D-size sheet. A. In the Units section select Architectural. B. Accept all the defaults for angular settings by selecting the Finish button. C. In the Area section specify units of 680’ and 440’, then select Finish. D. Zoom All. E. Set Grid to 20’ and Grid Snap to 1’. F. Load the Center2, Hidden2, and Phantom2 Linetypes. G. Set Ltscale to 240. H. Create the following Layers and change their Color , Linetype, and Lineweight as indicated. OBJECT CENTER PHANTOM HIDDEN




I. Save the drawing as CIVIL20-D.



AutoCAD 2000 Instructor CHAPTER 15 EXERCISES

1.

Figure ME15-1

Printed Circuit

Complete the printed circuit board in Figure ME15-1. Use Donut with an inside diameter of .1 and an outside diameter of .2 to create the pads. Use Pline with a width of .12 to complete the traces. Use a .25 Grid and Grid Snap to place all pads (Donuts) on a point. Save the drawing as CH15EX1-M.

2.

Machine Screw

Figure ME15-2

Draw the machine screw shown in Figure ME15-2. Since this is a schematic thread representation, you can estimate the thread pitch (distance between two crests or two roots). Save the drawing as CH15EX2-M.

3.

Bill of Materials

Figure ME15-3

Complete the table in Figure ME15-3 to be used as a bill of materials. Draw the bottom Line as dimensioned. Use the Divide and Measure commands to find the necessary points. Create Offsets Through the Points using Node OSNAP. Save the drawing as BOM.


AutoCAD 2000 Instructor 4.


Figure ME15-4A

Gear

Complete the diagram of the gear in Figure ME15-4A. Use the Polar option of the Array command to copy and rotate one tooth (Ellipse) around the Circle 20 times. Use the Region command to convert the teeth and Circle to regions.

Using the Subtract command, select the Circle at the “select solids and regions to subtract from” prompt. Select each of the teeth at the “select solids and regions to subtract” prompt, then press Enter. Your drawing should look like that in Figure ME15-4B. Save the drawing as

Figure ME15-4B

CH15EX4-M.





1. Flanged Sleeve

Complete the flanged sleeve shown in Figure ME16-1. Create Layers for each of the separate line types. Assign appropriate Lineweights to the layers as shown in the figure. Use the Properties window to move all continuous lines to a Layer called Geometry. Save the drawing as CH16EX1-M.

2. Plate

Figure ME16-2

Open the CH8EX2 drawing from Chapter 8 exercises. Draw Lines on the current layer to represent the center lines shown in Figure ME16-2. Next create an appropriate Layer and Linetype for center lines and use Properties to place the lines on the proper layer. Save the drawing as CH16EX2-M.




Figure ME16-3

3. Cam Plate

Draw the cam plate shown in Figure ME16-3 using Lines and Arcs or Circles. When finished, use the Pedit command and convert the existing Lines and Arc to Plines with a Width of .1. Add the necessary center and hidden lines. Save the drawing as CH16EX3-M.

4. Displacement Diagram

Draw the cam displacement displacement diagram as shown in Figure Figure ME16-4. First, draw one horizontal Line and use the Divide command to help lay out 13 equally spaced vertical lines. Draw half of a Circle at the left-most vertical line and Array the vertical line 7 times to fill 180 degrees. Construct the respective horizontal projection projection lines from the ends of the radial radial lines. Place a Donut at each line intersection, then use the Spline command to draw the cam profile. Trim as necessary. Save the drawing as CH16EX4-M. Figure ME16-4

Copyright 2000 The McGraw-Hill McGraw-Hill Companies. All rights reserved.



CHAPTER 17 EXERCISES 1. Lever

Complete the lever drawing in Figure ME17-1. Begin the drawing by locating the center of the 1.00 diameter Circle at absolute coordinates of 2.25, 4.00. 4.00. Use the Dist, Id, and Properties commands to answer the following questions. Save the drawing as CH17EX1-M. A. What is is th thee Distance from the center of the 1.00 diameter circle “A” to the intersection of the circle and the vertical center line at “B”? B. What is the absolute absolute coordin coordinate ate value value of the the center center of the 4.50 4.50 radius radius (arc (arc “C”)? “C”)? C. Wha Whatt is the tota totall lengt length h of ar arcc “C”? “C”? Figure ME17-1



AutoCAD 2000 Instructor Figure ME17-2

2. Shaft Se Set

Draw the shaft set shown in Figure ME17-2. Find the total Area with the 3.00 diameter Circle removed. Save the drawing as CH17EX2-M.

3. Dblist

Open CH17EX1-M from exercise 1. Use Dblist to obtain a listing of all entities in the drawing. Select Edit from the AutoCAD Text Window, then select Copy History. Open the Windows Notepad and select Paste from the Edit menu. The Dblist from the current drawing can now be saved as a text file or printed.

4. Time

Using the Time command, what is the total amount of editing time you spent with the time have you spent in this session? How much time time until CH17EX1-M drawing? How much time the next automatic save?

Chapter 17 Answers 1. Lever

A. B. C.

Distance = 6.8474 Abso Ab solu lute te Co Coor ordi dina nate te Val alue ue,, De Delt ltaa X = 6. 6.62 6200 00,, De Delt ltaa Y = -1 -1.7 .750 5000 Total Arc Length is 5. 5.3595

2. Shaft Se Set

Total Area = 15.2793





1. Packing Gland Open the drawing entitled CH18EX4-M from the Chapter 18 Exercises. Activate a layout. Using Pagesetup, ensure that the Plot Device and Paper Size are set correctly for the device you will use to print or plot. If no viewport exists in the layout, create a layer named VIEWPORTS , then use the Vports command to make one viewport on the new layer. Use the Viewports toolbar and select an appropriate viewport scale from the drop-down list to achieve a print similar to that shown in Figure ME19-1. Saveas CH19EX1-M.

2. Flange

Figure ME19-2

Begin a New drawing and create the Flange using the dimensions shown in Figure ME19-2. Create the center lines on a separate layer but do not create the dimensions. Next, create a new layout using the Layout command with the Template option and select the ANSI B –Color Dependent Plot Styles.dwt with the ANSI B Titleblock. Switch to the new layout and set the viewport scale to 1.5 to achieve a drawing similar to that shown in Figure ME19-2. Save the drawing and assign the name CH19EX2-M. Copyright 2000 The McGraw-Hill Companies. All rights reserved.



Figure ME19-3

3. Multiple Viewports Open the drawing you created in Chapter 10 Exercises named VENTPNL. Create a new layout using the Layout command with the Template option and select the ANSI A –Color Dependent Plot Styles.dwt with the ANSI A Titleblock . Activate the new layout and Erase the viewport that exists (it is the same size and shape as the inside border of the titleblock). Create two viewports as shown in Figure ME19-3. Set the viewport scale for the main view at 1:2 and for the detail at 1:1. Label the two views and indicate the scale with Text . Save the drawing as CH19EX3-M.

4. Multiple Layouts

Figure ME19-4

Open the Flange drawing you created previously named CH19EX2-M. Create a second new layout using the ANSI A –Color Dependent Plot Styles.dwt. Switch to the new layout and set the viewport scale to .75. Next, use the Layer Properties Manager to freeze the center line layer in the Active Viewport Freeze column (make sure your cursor is “inside” the viewport before you change the layer setting). Check the other (ANSI B) layout to verify the layer setting affected only the viewport in the ANSI A layout. Your new layout should look similar to that shown in Figure ME19-4. Save the drawing and assign the name CH19EX4-M.




CHAPTER 23 EXERCISES 1. Plate

Draw the steel plate according to the dimensions shown in Figure ME23-1, Plate A. Copy the plate so that there are two identical figures. Use the Stretch and Move modes of Grips to resize and relocate the holes and the plate perimeter as shown in Plate B. Save the drawing as CH23EX1-M. Figure ME23-1

2. Shaft

Draw Shaft A as shown in Figure ME23-2. Copy the shaft and use Grips to resize the new shaft to the dimensions as shown in Shaft B. Save the drawing as CH23EX2-M. Figure ME23-2




Figure ME23-3

3. Hub (Part 1)

Complete the drawing of the hub as shown in Figure ME23-3. Use Rotate with the Copy option of Grips to create the 45° angle center lines and to array the holes. Save the drawing as CH23EX3-M.

Figure ME23-4

4. Hub (Part 2)

Open CH23EX3-M and use Grips to make the modifications shown in Figure ME23-4. SaveAs CH23EX4-M.



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Auto CAD Lab Manual by Shrungare R R

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