CIMS LAB - Jaipur Engineering College

LABORATORY MANUAL

DEPARTMENT OF MECHANICAL ENGINEERING

J E C GROUP OF COLLEGES

PREFACE

This lab stresses on the fundamental concepts of CAD/CIMS in mechanical engineering and stands as a

cornerstone in field of engineering. This field that emerged some years ago is a promising field in engineering,

research and development. In the past fifteen years the interactive computer graphics and CAD/CIMS

technology have been impacting the drafting, design and manufacturing tools significantly. The purpose of this

lab is to present CIMS principles and tools in generic and basic terms. These principles are supplemented with

engineering and design applications as well as problems. This lab is also concerned with developing basic

abilities to utilize the existing cam system CNC trainer and VMC in engineering practice. In engineering

practice, CIMS has been utilized in different ways by different people. This lab enables students to develop

greater interdisciplinary expertise, which will better equip them for jobs demanding the skills in the workplace.

Some of the applications of this technology are:

• Production of drawings and design documents

• Visualization tool for generating shaded images and animated displays.

• Engineering analysis of geometric models.

• Process planning and generation of NC part programming.

- HEAD OF DEPARTMENT

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S. No. List of Experiments Page No.

INDEX

To write the part programming and simulation them to the given lathe job.(Plane Turning)

To write the part programming and simulation them to the given lathe job.(Step Turning)

To write the part programming and simulation them to the given lathe job.(Multiple Turning)

To write the part programming and simulation them to the given lathe job.(Thread Cutting)

To write the part programming and simulation them to the given milling job(Linear & Circular Interpolation)

To write the part programming and simulation them to the given milling job(Docket Milling)

To write the part programming and simulation them to the given lathe job.(Drilling Operation)

To write the part programming and simulation them to the given milling job.(Linear Interpolation)

To write the part programming and simulation them to the given milling job.

To write the part programming and simulation them to the given lathe job

1.

2.

3.

4.

5.

6.

7.

8.

1-4

5-8

9-12

13-16

17-20

21-24

25-28

29-30

9. 31-32

10. 33-34

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01

Experiment No. 1AIMTo write the part programming and simulation them to the given lathe job.

TOOLS AND EQUIPMENTS

· CNC simulation software FANUC

· CNC trainer software

· Software Pentium IV

PROCEDURE

· To write the program for given job.

· To type G and M CODES.

· To give the tool size and stock dimensions.

· Finally to run the machine to the operation.

PROGRAMG21� G98� � ��G28� U0 W0� � �M06� T0101� � �M03� S1500 M-CODESG00� X26Z1� M06 – Tool ChangeG01� X25F50� M03 – Spindle Forward ClockwiseG01� Z-30F50� M05 – Spindle StopG01� X26F50� M30 – Program End�G01� Z1F50� �G01� X24F50� � �G01� Z-30F50� �G01� X26F50� � �G01� Z1F50� � �G01� X23F50� � � G-CODESG01� Z-30 F50 G01� X26 F50� G21– Metric� �G01� Z1 F50� G98� – Feed/MinG01� X22F50� G28� U0 W0 – Reference Point ReturnG01� Z-30 F50� G00� X Y – Positioning (Rapid Traverse)G01� X26F50� G01� X Y F – Linear Interpolation (Feed)G01� Z1F50� G03� – Circular Interpolation (CCW)G01� X18Z0F50 G90� – Cutting Cycle TurningG03� X22 Z-2 R2 F40� �G28 U0 W0M05M30

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02

RESULTThus the part program was written and simulated for given job.

VIVA- VOCE1. Explain about G codes.2. Mention few important G codes.3. What is the use M codes?4. Write about some important M codes.5. What is the difference between G00 and G01codes?

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03

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04

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05

AIM

To write the part programming and simulation them to the given lathe job


1. CNC simulation software FANUC

2. CNC trainer software

3. Software Pentium IV

PROCEDURE

1. To write the program for given job.

2. To type G and M CODES.

3. To give the tool size and stock dimensions.

4. Finally to run the machine to the operation.

PROGRAM

G21 G98

G28 U0 W0

M06 T0101

M03 S1500

G00 X26 Z1

G90 X25 Z-40 F50

X24

X23

X22

G90 X21 Z-28 F50

X20

X19

X18

X17

X16

G90 X15 Z-10 F50

X14

X13

X12

G28 U0 W0

M05

RESULT

Thus the part program was written and simulated for given job

Experiment No. 2

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06

VIVA- VOCE

1. How to change the tool speed in CNC lathe?

2. Mention the major components of the CNC machine?

3. What is the code for Threading cycle?

4. What is use of dry run option?

5. What is the code for coolant control?

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07

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08

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09

AIM

To write the part programming and simulation them to the given lathe job.





PROCEDURE





PROGRAM

G21� G98��G28� U0W� 0��M06� T0101��M03� S1200��G00� X26Z�� 1��G71� U0.5R� 1.0��G71� P01Q�� 02U� 0.2W� 0.2F� 50

N01� G01X�� 8��G01� Z0��G01� X10Z�� -2��G01� X10Z�� -12��G02� X15Z�� -14.5 R2.5�G01� X15Z�� -24.5��G03� X20Z�� -27 R2.5��G01� X20Z�� -32��N02� G01X�� 25.4 Z-32�G70� P01Q�� 02F� 40��G28� U0W� 0��M05� ��M30

Experiment No. 3

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10

G71 – Multiple Turing cycle (stock remover)

G 70 – Finishing cycleG71 U RG71 P Q U W FG70 P QG71 – Multiple Turning CycleU – Depth of CutR – Retract AllowanceG71 – Multiple Turing CycleP – Starting Block (N01)Q – Ending Block (N02)U – Finishing Allowance in X-AxisW – Finishing Allowance in Z-AxisF – Feed RateG70 – Finishing CycleP – Starting BlockQ – Ending Block

RESULT

Thus the part program was written and simulated for given job.

VIVA-VOCE

1. What are the difference between CAD and CAM?

2. What is function of G00?




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12

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13

AIM

To write the part programming and simulation them to the given lathe job.





PROCEDURE





PROGRAM

G21� G98�G28� U0W� 0

M06� T0101

M03� S1500

G00� X26Z� 1

G90� X25Z� -40 F50

X24� �X23� �X22� �G28� U0W� 0

M06� T0202

M03� S300

G00� X26Z� 1

G92� X22Z� -20 F2

X21.95

X21.90

X21.85

X21.80

X21.75

X21.70

X21.65

X21.60

X21.55

X21.50

X21.45

X21.40

Experiment No. 4

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14

X21.35

X21.3

G92 Thread Cutting Cycle

Syntax G92 X_ Z_ F_

Feed = Pitch = 2 mm

Calculation of Mirror Diameter (d) d=D-2h

=D - 2 X (0.615 X P)

=22 – 2 X (0.615 X 2)X21.25

X21.20

X21.15

X21.10

X21.05

X21

X20.95

X20.90

X20.85

X20.80

X20.75

X20.70

X20.65

X20.60

X20.55

X20.50

X20.45

X20.40

X20.35

X20.30

X20.25

X20.20

X20.15

X20.10

X20.05

X20

X19.95

X19.90

X19.85

X19.80

X19.75

X19.70

X19.65

X19.60

X19.54

G28 U0 W0

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15

M05

M30

RESULT


VIVA-VOCE





5. What is function of G90 & G91?

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16

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17

AIM



1. CNC simulation software

2. CNC milling software

3. Softaware Pentium IV

PROCEDURE





PROGRAM

G21� G94��G91� ��G28� Z0��G28� X0Y� 0��M06� T1��M03�S1500��G90� ��G00� X30Y� 20��G00� Z5��G01� Z-0.5 F30�G01� X70Y� 20F� 50�G03� X80Y� 30R� 10F� 50

G01� X80Y� 70F� 50�G01� X70Y� 80F� 50�G01� X30Y� 80F� 50�G02� X20Y� 70R� 10�G01� X20Y� 30F� 50�G01� X30Y� 20F� 50�G01� Z5F� 50��G91� ��G28� Z0��G28� X0Y� 0��M05� ��M30�

Experiment No. 5

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18

RESULT


VIVA-VOCE


2. What is function of M02?




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20

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21

AIM






PROCEDURE





PROGRAM

G21� G94��G91� ��G28� Z0��G28� X0Y� 0��M06� T1��M03�S1500��G90� ��G00� X30Y� 20��G00� Z5��G01� Z-0.5 F30�G01� X70Y� 20F� 50�G03� X80Y� 30R� 10F� 50

G01� X80Y� 70F� 50�G03� X70Y� 80R� 10F� 50

G01� X30Y� 80F� 50�G03� X20Y� 70R� 10F� 50

G01� X20Y� 30F� 50�G03� X30Y� 20R� 10F� 50

G91� ��G28� Z0G�� 28 X0 Y0

M05

M30

Experiment No. 6

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22

RESULT


VIVA-VOCE




4. What is function of G22,G23,G24?


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23

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24

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25

AIM

Write an efficient CNC part program to drill 35 holes of diameter of 0.5 inch each in a machine component as

shown in the figure. The raw material to be employed is mild steel plate of 0.4 inch thickness. Explain the

important functions used in the CNC code.





Experiment No. 7

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26

Programme

RESULT


VIVA-VOCE

1. What do you mean by block?

2. What do you mean by absolute coordinate system and incremental system?

3. What do you mean by compensatory radius in milling operation?

4. What do you mean by rapid positioning and linear translatory motion?

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27

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28

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29

AIM






PROCEDURE





PROGRAM

G21� G94��G91� ��G28� Z0��G28� X0Y� 0�M06� T1��M03� S1500�G90� ��G00� X20Y� 20�G00� Z5��G01� Z-0.5 F30

G01� X80Y� 20F� 50

G01� X80Y� 80F� 50

G01� X20Y� 80F� 50

G01� X20Y� 20F� 50

G91� ��G28� Z0�G28� X0Y� 0�M05� M30��

RESULT


VIVA-VOCE

1. What do you mean by word , character in part programming?

2. What do you mean by N code?

3. What do you mean by <EOB> in part programming ?

4. Why we use jog pad in cnc?

Experiment No. 8

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30

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31

AIM






PROCEDURE





PROGRAM

G21G94

G91

G28Z0

G28X0Y0

M06T1

M03S1500

G90

G00X30Y20

G00Z5

G01Z-0.5 F30

G01X70Y20F50

G02X80Y30R10F50G01X80Y70F50

G02X70Y80R10F50G01X30Y80F50

G02X20Y70R10F50G01X20Y30F50

G02X30Y20R10F50

G91

G28 Z0

G28 X0 Y0

M05

M30

RESULT


Experiment No. 9

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32

VIVA-VOCE

1. What do you mean by point to point system?

2. Give example of point to point machining tool.

3. What do you mean by pocket milling?

4. What do you mean by circular interpolation?

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33

Experiment No. 10AIM

To prepare part programs using G-codes and M-codes. The following examples illustrated the part program for

different components. Example 01 (All dimensions are in mm).





Main programme

N01 G54 G90 G71 G94 M03 S800; (Parameters Setting)

N05 G01 X-12.5 Z0 F2; (Facing the job)

N10 G00 Z1; (Retrieval of tool)

N15 G00 X00; (Tool clearance)

N20 G01 Z-100; (Starting cut)

N25 G00 X1 Z1; (Clearance position)

N30 G00 X-2; (Position of cut)

N35 G01 Z-60; (Cutting length)

N40 G00 X-1 Z1; (Retrieval of tool)





N65 G01 Z-60; (Cutting length) Ø 16 Ø 35 Ø 25 60 100 (0, 0) 42 CNC Machines


N75 G00 X-4.5; (Position of cut)

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34


N85 G00 X5 Z5; (Final position of tool)

N90 M02; (End of programme)

RESULT


VIVA-VOCE

1. What are the applications of cam?

2. What are the advantages of cnc machine?

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35

SOME IMPORTANT PREPARATORY FUNCTIONS

(G -CODES)

G00- Fast transverse

G01- Linear interpolation

G02- Circular interpolation (c.w)

G03- Circular interpolation (c.c.w)

G04-Dwell

G20-Imporial (input in inches)

G21- Metric (input in mm)

G28- Go to reference

G40- Cutter compensation cancel

G41- Cutter compensation right

G42-Cutter compensation left

G50- Co-ordinate setting

G70-Finishing cycle

G71- Stock removal in turning

G72- Multiple facing

G73-Pattern repeating

G74- drilling

G76- Multiple thread

G81- Drilling cycle

G90-Turning cycle

G94- Facing cycle

G96- Constant surface

G97- Variable surface

G98- Feed per minute

G99- Feed per revolution

MISCELLANEOUS FUNCTIONS

(M - CODES)

M00- Program stop

M02- Optional stop

M03- Program end

M04- Spindle forward

M05- Spindle stop

M06- Tool change

M08- Coolant on

M09- Coolant off

M10- Vice open

M11- Vice close

M62- Output 1ON

M63- Output 2ON

M64- Output1OFF

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36

M65- Output 2OFF

M60- Wait input 1ON

M67- Wait input 10FF

M76- Wait input 2OFF

M77-Sub program call

M98-Sub program exit

M99- Sub program exit

M30- Program and rewind

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NAME OF THE LBORATORY:____________________________________ CODE:___________________

SEMESTER:______________NAME OF STUDENT:___________________ ROLL No:________________

Note: Lab citizenship covers Discipline, Punctuality, Lab Meeting Participation, Note book Record Keeping and contribution in up keeping of the lab

Date of Allotment

LAB PERFORMANCE APPRAISAL SHEET

Marks Awarded for

Total marks as per syllabus (M)= Z / 10

Experiment No & Title of the Experiment

Full Marks (Y)

Lab Performance

Viva-Voce Lab Citizenship

Total (X) Signature of Lab In charge

with Date

Total Marks from experiment No------ to ----- (Z)

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Note

CIMS LAB - Jaipur Engineering College

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