COMPUTER AIDED DESIGN AND MANUFACTURING LABORATORY MANUAL...

DEPARTMENT OF MECHANICAL ENGINEERING NRIH

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COMPUTER AIDED DESIGN AND MANUFACTURING LABORATORY

MANUAL IV-b.tECh i-sem-mechanical

& iv-b.tech i-sem-automobile

Prepared By:

SOUGANDH KOWTHAL

Assistant Professor

&

D.U.M.MANIKANTA

Assistant Professor

DEPARTMENT OF

MECHANICAL ENGINEERING


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SYLLABUS

(A70390) COMPUTER AIDED DESIGN AND

MANUFACTURING LAB

S.NO: NAME OF THE EXPERIMENT NAME OF THE EQUIPMENT

Drafting

1 Drawing Experiments Using Auto Cad

Cotter Joint With Sleeve

Auto CAD

2 Knuckle Joint Auto CAD

3D PART MODELING (CAD)

3 Oldham coupling Solid works

4 Screw Jack

Solid works

5 Universal Coupling

Solid works

COMPUTER AIDED ANALYSIS (CAE)

6 Determination of deflection and stresses

in Cantilever Beam With Point Load

ANSYS

7 Determination of deflection and stresses

in Simply supported beam with UDL

ANSYS

8 Determination of deflection and stresses in Trusses

ANSYS

9 Determination of deflections, Principle , Von-mises stresses in Plane stress

ANSYS

10 Estimation of natural frequencies and mode shapes (Modal Analysis of Cantilever beam)

ANSYS


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11 Estimation of natural frequencies and

mode shapes (Harmonic analysis of a Bar

subjected to forcing function)

ANSYS

12 Heat conduction and convection

ANSYS

CAM

13 study the “G” codes and “M” codes for the CNC milling machine

CNC

14 CNC-Milling Rectangular Pockating

CNC

15 CNC- Lathe simple turning

CNC

16 CNC -Lathe step turning

CNC

17 CNC -Lathe right hand left hand taper turning taper turning

CNC

18 CNC -Lathe thread cutting operation CNC


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Experiment NO: 1

DRAWING EXPERIMENTS USING AUTO CAD

COTTER JOINT WITH SLEEVE

Aim : To draw the cotter joint with sleeve using Auto CAD.


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Procedure

Set limits of Auto CAD screen. Set units Type : Decimal, Insertion scale :Millimetres

Insert line types Centre line and Dashed line into the drawing using Line type

command.

Draw the centre line. Draw the two shafts by taking diameter of the shaft as30mm and

increasing the diameter to 1.3D inside the sleeve as shown in the figure. Use line

command and spline command for drawing cut sections of the rods at the ends.

Draw a sleeve over the rods by taking diameter as 2.5D and length as 8D. using trim

command remove required portion of the sleeve and rods to insert cotters. Cotter length

is 4D, width 1.3D and taper is 1:30.

Represent the top half in section by applying hatching using hatch command. Represent

invisible portion of the rods and cotters in the sleeve with dashed lines.

Drawing the projections from the front view draw the top view using line, arc or circle,

fillet and trim commands.

Create a new layer using layer command and set color for layer to display dimensions.

Name this layer as Dim.

Create a new dimension style. Draw all dimensions of the drawing in Dim layer.

Precautions

Use zoom and Pan Commands properly while doing trim and fillet operations at very

small dimensions.

Use line type scale command (lts) for correct display of dashed and center lines.

Use hatch edit command to adjust the hatching of the sections.

Draw all the dimensions in new layer only.

Result

Cotter joint with sleeve has been drawn successfully using Auto CAD software.


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Experiment NO: 2

Knuckle Joint

Aim : To draw the Knuckle using Auto CAD.


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Procedure

Set limits of Auto CAD screen. Set units Type : Decimal, Insertion scale :Millimeters

Insert line types Centre line and dashed line into the drawing using Line type command.

Draw the centre line. Draw the pin in the top view by taking D as diameter 4D as

length. Draw the Eye end and forked end using line, circle and arc commands. Draw a

octagon and draw the octagonal ends of the rods by drawing projections from the

octagon drawn in the side view. Erase the octagon after drawing projections.

Draw the collar by taking 1.5D diameter and 0.5D as length. Draw the pin inside the

collar.

Represent partial section by applying hatching using hatch command.

Drawing the projections from the top view draw the front view using line, arc or circle,

fillet and trim commands.

Create a new layer using layer command and set color for layer to display dimensions.

Name this layer as Dim.

Create a new dimension style. Draw all dimensions of the drawing in Dim layer.

Precautions

Use zoom and Pan Commands properly while doing trim and fillet operations at very

small dimensions.

Use line type scale command(lts) for correct display of dashed and center lines.

Use hatch edit command to adjust the hatching of the sections.

Draw all the dimensions in new layer only.

Result

Knuckle joint has been drawn successfully using Auto CAD software.

.


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3D MODELLING EXPERIMENTS USING SOLID WORKS

Experiment NO:3

Oldham coupling

Aim : To make the part model, Assembly and Drawing of the Oldham coupling using Solid

works.


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Procedure

Part modeling

Flange: Select work plane in the side view and create a sketch. Draw a circle of 100mm

dia in the sketch and extrude it to 20mm. Take a new sketch in the top view and draw a

rectangle of 10X12mm and create a slot using extruded cut feature. Create a hub of

60mm diameter using extrude feature. Create hole with key way for the shaft of 30mm

diameter.

Central disc: Select the work plane in the side view and create a new sketch. Draw a

circle of 100mm diameter and extrude it to 20mm. Remove the unwanted portion using

extruded cut feature and create the projection on both sides of the central disc.

Shaft: Select the work plane side view and create a sketch with circle of 30mm diameter

using extrude feature. Create key way using extruded cut feature.

Key: Select the work plane side view and create a sketch with rectangle D/4 as width

and length.

Assembly

Create a sub assembly using shaft and key using coincidence mates. Create a main

assembly by taking a central disc as main part. Assemble flanges to the central disc and

insert sub assembly of shaft and key to flanges.


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Drawing

Create a new drawing file. Insert the assembly into drawing and project the side view

and front view. Take a sectional view from the side view. Draw the dimensions using

smart dimensioning.

Precautions

Select the Work plane properly based on the views required in the drawing.

Use constrains properly while drawing sketches.

Select the correct mates between the parts.

Result

Parts, Assembly and Drawing of the Oldham coupling done using Solid Works.


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Experiment NO:4

Screw Jack

Aim: To make the part model, Assembly and Drawing of the Screw jack using Solid works.


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Procedure

Part modeling:

Body: Select the work plane in the front view. Draw the sketch for the body with given

dimensions and revolve it using revolve feature to get body of screw jack.

Nut: Select the work plane in the front view. Draw the sketch for the nut with given

dimensions and revolve it using revolve feature.

Screw: Select the work plane in the front view. Draw the sketch for the screw with

given dimensions and revolve it using revolve feature. Select the work plane in the side

view and make a through hole using extruded cut feature. Make a M12 tapped hole at

the top of screw using hole feature.

Cup: Select the work plane in the front view. Draw the sketch for the cup with given

dimensions and revolve it using revolve feature. Create a work plane in the side view

and draw a hole and make a semi circular cut using the extruded cut option. Repeat the

same procedure in the front work plane.

Washer: Select the work plane in the front view. Draw the sketch for the washer with

given dimensions and revolve it using revolve feature.

Screw: Select the work plane in the front view. Draw the sketch for the washer with

given dimensions and revolve it using revolve feature.

Tommy bar: Select the work plane in the front view. Draw the sketch for the tommy bar

with given dimensions and revolve it using revolve feature.

Assembly

Create a sub assembly with Cup, washer and screw. Insert the Body as main part. Use

proper mates to assemble remaining parts sub assembly.

Drawing

Insert the assembly into a new drawing file and project the front view and top view.

Create the sectional front view to get the details of screw and washer in the drawing.

Mark the dimensions for the entire drawing using smart dimensioning.

Precautions




Result: Parts, Assembly and Drawing of the Screw Jack prepared using Solid Works.


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Experiment NO:5

Universal Coupling

Aim: To make the part model, Assembly and Drawing of the Universal coupling using Solid

works.


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Procedure

Part modeling

Fork: Select the front work plane and draw the sketch for the vertical portion of the

fork. Select the top face and create the sketch for top part of the fork. Use the mirror

feature to get the bottom part of the fork. Create the hub and shaft for fork using extrude

feature.

Central block: Select top work plane Draw the sketch with two concentric circles and

extrude them. Select the front work plane Draw the sketch with two concentric circles

according to the given dimensions and extrude them.

Shaft: Select the work plane side view and create a sketch with circle of 30mm diameter

using extrude feature. Create key way using extruded cut feature.

Key: Select the work plane side view and create a sketch with rectangle D/4 as width

and length.

Assembly

Create a sub assembly using shaft and key using coincidence mates. Create a main

assembly by taking a central block as main part. Assemble Forks to the central block

and insert sub assembly of shaft and key to flanges.

Drawing

Create a new drawing file. Insert the assembly into drawing and project the side view

and front view. Take a sectional view from the side view. Draw the dimensions using

smart dimensioning.

Precautions




Result: Parts, Assembly and Drawing of Universal Coupling prepared using Solid Works.


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ANALYSIS EXPERIMENTS

Experiment NO: 6

DETERMINATION OF DEFLECTION AND STRESSES IN

CANTILEVER BEAM WITH POINT LOAD

Compute the stresses for the beam shown and find the maximum deflection. Assume

rectangular c/s area of 2000mm * 1000mm, Young’s modulus of 70 GPa, Poisson’s ratio

0.27.Length of the beam 50m and material is aluminum.

STEP:1 ADDING THE ANALYSIS SYSTEM

1. Since it is a static structural problem add "STATIC STRUCTURAL" in the project

schematic.

2. To add a analysis system double click on it, or press the right mouse button on it and drag it

inside.

STEP: 2 ENGINEERING DATA

1. To begin setup for your simply supported beam, double click or right click on Engineering

Data and click edit. This will bring up another screen.

2. This new window will allow you to alter the material properties of your simply supported

beam. Under Outline of Schematic A2: Engineering Data, it shows click here to add a new

material, this menu allows you to input the material of your cantilever beam, double click and

type aluminum.

3. Double click on Isotropic Elasticity to give the material the same properties across the beam.

This action brought up a new table on the right; this allows us to add necessary properties. As

show on the top right of the screen in Table of Properties Row 2: Isotropic Elasticity.

fixed end

50 m

100 kN


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4. Click in Temperature and type 25.

5. Click in Young’s Modulus and type 70e3 and poisons ratio 0.27.

STEP: 3 GEOMETRY

1. Go to Workbench -> Project Schematic -> Geometry and double click. This will open a

new window for ANSYS Design Modeler where the Geometry will be created.

2. In the new window, click the Display Plane icon to toggle the coordinate system.

3. Go to Design Modeler -> Tree Outline -> right click on XY Plane. Click Look At to view

the xy plane.

4. Go to Design Modeler -> Tree Outline -> Sketching.

5. In sketching>Draw>Rectangle.

6. Sketching>dimension>length of rectangle 2000mm>breadth 1000mm.

7. Go to modeling>extrude>select geometry by apply>depth of extrusion 50m.

8. Exit the design modular.

STEP4: MESHING

1. After returning to project schematic double click on model cell.

2. Go to outline>model (A4)>geometry>solid>details of solid>assignment>by default

structural steel-change it to aluminum.

3. Next go to outline>model (A4)>mesh>details of mesh>sizing>element size>give

2mm>right click on mesh>generate mesh.

STEP5:BOUNDRY CONDITION

1. Go to outline>model (A4)>static structural (A5)>right click on it select fixed

support>details of fixed support>select one end face of beam>apply.

2. Go to outline>model (A4)>static structural (A5)>right click on it select force>apply on

other end edge.


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STEP6: SOLVE

1. Do analysis settings by keeping large deflection on and then give solve.

RESULTS:

EQUIVALENT VON-MISES STRESS =

MAXIMUM TOTAL DEFLECTION =


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Experiment NO: 7

DETERMINATION OF DEFLECTION AND STRESSES IN SIMPLY SUPPORTED BEAM WITH UDL

Compute the Stresses for the beam shown and find the maximum deflection. Assume

rectangular c/s area of 3500mm * 500mm, Young’s modulus of 210 GPa, Poisson’s ratio

0.27.Length of beam 50 m. Material is structural steel.

STEP: 1 ADDING THE ANALYSIS SYSTEM


schematic.


inside.







type structural steel.






UDL 25 kN/m entire span

50 m


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STEP: 3 GEOMETRY

1. Go to Workbench -> Project Schematic -> Geometry and double click. This will open a

new window for ANSYS Design Modeler where the Geometry will be created.

2. In the new window, click the Display Plane icon to toggle the coordinate system.

3. Go to Design Modeler -> Tree Outline -> right click on XY Plane. Click Look At to view

the xy plane.

4. Go to Design Modeler -> Tree Outline -> Sketching.

5. In sketching>Draw>Rectangle.

6. Skething>dimension>length of rectangle 3500mm>breadth 500mm.

7. Go to modeling>extrude>select geometry by apply>depth of extrusion 50m.

8. Exit the design modular.

STEP4: MESHING

1. After returning to project schematic double click on model cell.

2. Go to outline>model (A4)>geometry>solid>details of solid>assignment>by default

structural steel-change it to aluminum.

3. Next go to outline>model (A4)>mesh>details of mesh>sizing>element size>give

2mm>right click on mesh>generate mesh.

STEP5: BOUNDRY CONDITION

1. Select the two edges of simply supported beam and fix "y" direction displacement.

2. Select upper surface of beam and apply a uniform pressure

STEP6: SOLVE

1. Do analysis settings by keeping large deflection on and then give solve.

RESULTS:


MAXIMUM TOTAL DEFLECTION =


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EXPERIMENT NO: 8

DETERMINATION OF DEFLECTION AND STRESSES IN TRUSSES

For the given data, find internal stresses developed Nodal displacement in the planar truss shown in

figure when a vertically downward load of 10000 N is applied as shown.

Member C/s area mm

2 E

N/mm2

1 200

2 200 2 x 105

3 100

4 100

Step 1: Ansys Utility Menu

File - clear and start new - do not read file - ok - yes.

Step 2: Ansys Main Menu - Preferences Select - STRUCTURAL - ok

Step 3: Preprocessor

Element type - Add/Edit/Delete - Add - Link - 2D spar 1 - ok - close.

Real constants - Add - ok - real constant set no - 1 - c/s area - 200 - apply - real constant set no

- 2 - c/s area - 100 - ok - close.


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Material Properties - material models - Structural - Linear - Elastic - Isotropic - EX - 2e5 -

PRXY - 0.27 - ok - close.


Modeling - Create - Nodes - In Active CS - Apply (first node is created) - x,y,z location in CS

- 1000 (x value w.r.t first node) - apply (second node is created) - 500, 500 (x, y value w.r.t first

node) - apply (third node is created) - 2000, 1000 (x, y value w.r.t first node) - ok (forth node is

created).

Create - Elements - Elem Attributes - Material number - 1 - Real constant set number - 1 - ok

- Auto numbered - Thru Nodes - pick 1 & 3 - apply - pick 2 & 3 - ok - Elem Attributes -

Material number - 1 - Real constant set number - 2 - ok - Auto numbered - Thru Nodes - pick 3

& 4 - apply - pick 2 & 4 - ok (elements are created through nodes).


Loads - Define loads - apply - Structural - Displacement - on Nodes - pick node 1 & 2 - apply

- DOFs to be constrained - All DOF - ok.

Loads - Define loads - apply - Structural - Force/Moment - on Nodes- pick node 4 - apply -

direction of For/Mom - FY - Force/Moment value - -10000 (-ve value) - ok.

Step 6: Solution Solve - current LS - ok (Solution is done is displayed) - close.

Step 7: General Post Processor Element table - Define table - Add - ‘Results data item’ - By Sequence num - LS - LS1 - ok.

Step 8: General Post Processor

Plot Results - Deformed Shape - def+undeformed - ok.

Plot results - contour plot - Line Element Results - Elem table item at node I - LS1 - Elem table

item at node J - LS1 - ok (Line Stress diagram will be displayed).

Plot results - contour plot - Nodal solution - DOF solution - displacement vector sum - ok.

List Results - reaction solution - items to be listed - All items - ok (reaction forces will be

displayed with the node numbers).

Step 9: PlotCtrls - Animate - Deformed shape


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EXPERIMENT NO: 9

DETERMINATION OF DEFLECTIONS, PRINCIPLE , VON-MISES

STRESSES IN PLANE STRESS

In the plate with a hole under plane stress, find deformed shape of the hole and determine the

maximum stress distribution along A-B (you may use t = 1 mm). E = 210GPa, t = 1 mm,

Poisson’s ratio = 0.3, Dia of the circle = 10 mm, Analysis assumption - plane stress with

thickness is used



schematic.


inside.





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type structural steel.






STEP: 3 GEOMETRY

1. Get into the design modular

2. Draw a rectangle of 60mm*40mm

3. Add the thickness of 1mm.

4. Close the design modular

STEP4: MESHING

1. Get into the mesh modular

2. Select the method of meshing as patch confirming.

3. Select body sizing give element size as 2mm.

4. Generate mesh.

5. Close the mesh modular.

STEP5: BOUNDRY CONDITION 1. Give fixed support at one end of plate.

2. Select the face of other end and apply a tensile force of 2000 N.

STEP6: SOLVE 1. Give solve.

RESULTS:


MAXIMUM TOTAL DEFORMATION =


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Experiment NO:10

ESTIMATION OF NATURAL FREQUENCIES AND MODE SHAPES

(MODAL ANALYSIS OF CANTILEVER BEAM)

For natural frequency determination. Modulus of elasticity = 200GPa, Density = 7800

Kg/m3.cross section 3500mm×500mm.length of beam 50m.Maximum number of modes 5.


1. Since it is a thermal problem add "MODAL" in the project schematic.


inside.


1. Add the material properties as done earlier.

STEP: 3 GEOMETRY


2. Construct the geometry as shown in the figure.

3. Close the design modular.


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STEP4: MESHING




4. Generate mesh.



1. Apply fixed support at one end of the beam.

STEP6: SOLVE

1. Give solve.

RESULTS:

TOTAL DEFORMATION=

MODAL FREQUENCIES=


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Experiment NO:11

ESTIMATION OF NATURAL FREQUENCIES AND MODE SHAPES

(HARMONIC ANALYSIS OF A BAR SUBJECTED TO FORCING

FUNCTION)

Consider the bar shown in figure below. Conduct a harmonic forced response test by applying a

cyclic load (harmonic) at the end of the bar. The frequency of the load will be varied from 1 -

100 Hz. Modulus of elasticity = 200GPa, Poisson’s ratio = 0.3, Density = 7800 Kg/m3.


1. Since it is a thermal problem add "HARMONIC" in the project schematic.


inside.


1. Add the material properties as done earlier.

STEP: 3 GEOMETRY





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STEP4: MESHING




4. Generate mesh.



1. Apply fixed support at one end face as shown in figure.

2. Apply a force of 1500 at other end.

STEP6: SOLVE

1. Give solve.

RESULTS:

TOTAL DEFORMATION =

FRQUENCY VS TIME =


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Experiment NO:12

HEAT CONDUCTION AND CONVECTION

For the two-dimensional stainless-steel shown below, determine the temperature distribution.

The left and right sides are insulated. The top surface is subjected to heat transfer by

convection. The bottom and internal portion surfaces are maintained at 300 °C. Thermal

conductivity of stainless steel = 16 W/m.K)


1. Since it is a thermal problem add "STATIC THERMAL" in the project schematic.


inside.


1. Add thermal conductivity of the material as given in the problem.

STEP: 3 GEOMETRY





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STEP4: MESHING




4. Generate mesh.



1. Apply temperature to all the faces as shown in figure.

2. Add convection coefficient at the given surface.

STEP6: SOLVE

1. Give solve.

RESULTS:

TOTAL HEAT FLUX=

TEMPERATURES=


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Experiment .NO:13

STUDY THE ‘G’ CODES AND ‘M’ CODES FOR THE CNC MILLING MACHINE

AIM:-To study the “G” codes and “M” codes for the CNC milling machine.

Programming codes:

Codes are model and do not have to be repeated in every sequence line.

All dimensions are entered as decimals.

G –codes for turning machine:

MTAB INDIA PVT LTD

G- To define tool movement for preparatory function.

G OO > Rapid movement

G O1 > Linear movement with feed rate G 02 > Circular interpretation clockwise with feed rate G 03 > Circular interpretation counterclockwise with feed rate G 04 > Dwell time in seconds G 17 > XY plane G 18 > XZ plane G 19 > YZ plane G 20 > Inch mode input (in”) G 21 > multi mode input (mm) G 28 > return to reference point (home position) G 40 > tool nose radius compensation cancel G 41 > tool nose radius compensation left G 42 > tool nose radius compensation right G 70 > finishing cycle G 71 > multiple turning cycle G 72 > multiple facing cycle G 74 > deck drilling cycle in z axis G 75 > grooving cycle in z axis G 76 > thread cutting cycle G 90 > turning cycle G 92 > thread cutting cycle G 94 > facing cycle G 98 > feed per minute G 99 > feed per revolution

M- Codes / Miscellaneous codes:

M 00 > program stop

M 01 > optional stop

M 02 > program end


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M 03 > spindle forward (cw)

M 04 > spindle reverse ( ccw)

M 05 > spindle stop M 06 > tool change M 08 > coolant ON

M 09 > coolant OFF

M 10 > chuck open

M 11 > chuck close M 30 > program stop and restart M 98 > sub program call M 99 > sub program exit

G- CODES FOR MILLING MACHINES:

HYTECH CNC MACHINE,PUNE

G 00 > point to point rapid positioning

G 01 > linear interpretation G 02 > Circular interpretation arc clockwise G 03 > Circular interpretation arc counterclockwise G 04 > Dwell time in seconds G 12 > circular pocketing clockwise G 13 > circular pocketing anticlockwise G 15 > polar coordinate system OFF G 16 > polar coordinate system ON G 17 > XY plane selection for arc movement G 18 > XZ plane selection for arc movement G 19 > YZ plane selection for arc movement G 20 > selecting inch mode input G 21 > selecting metric mode input G 40 > cutter compensation/offset,cancel G 41 > cutter radius compensation / offset-left G 42 > cutter radius compensation / offset-right G 43 > tool length compensation -positive G 44 > tool length compensation -negative G 49 > tool length compensation -cancel G 50 > scaling mode cancel (OFF) G 51 > scaling mode ON G 54 > shift of coordinate G 55 > shift of coordinate

G 56 > shift of coordinate




G 68 > coordinate rotation system ON G 69 > coordinate rotation system ON G 70 > Inch programming G 71 > metric programming G 80 > drilling cycle

G 81 > fixed cycle no 1 drill, spot drill


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G 82 > fixed cycle no 2 drill, counter bore G 83 > fixed cycle no 3 drill, deep hole

G 84 > tapping cycle

G 85 > fixed cycle no 4 drill, bore G 86 > boring cycle G 87 > back boring cycle G 88 > boring cycle G 89 > boring cycle G 90 > absolute dimension input G 91 > incremental dimension input G 94 > feed rate selection per min G 95 > feed rate selection per minute G 98, 99 > tool return position G 28 > return to reference point (home position) G 40 > tool nose radius compensation cancel G 41 > tool nose radius compensation left G 42 > tool nose radius compensation right G 70 > finishing cycle G 71 > multiple turning cycle G 72 > multiple facing cycle G 74 > peck drilling cycle in z axis G 75 > grooving cycle in z axis G 76 > thread cutting cycle G 90 > turning cycle G 92 > thread cutting cycle G 94 > facing cycle G 98 > feed per minute G 99 > feed per revolution

M- Codes / Miscellaneous codes:

M 00 > program stop M 01 > optional program stop M 02 > program end M 03 > spindle motor ON and forward direction (cw) M 04 > spindle motor ON and reverse direction ( ccw) M 05 > spindle stop M 06 > automatic tool change M 08 > coolant pump motor ON

M 09 > coolant pump motor OFF

M 21 > mirror image along x axis

M 22 > mirror image along y axis

M 23 > mirror image along z axis

M 30 > program stop and restart

M 98 > sub program call

M 99 > sub program exit

RESULT

Thus the “G” codes and “M” codes for the CNC milling machines were studied.


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Experiment No.14

CNC LATHE-MILLING RECTANGULAR POCKETING

AIM: To perform a rectangular milling operation by using CNC milling programming codes.

Apparatus required:

CNC machine

Personal computer

CNC software Program:

M 03 S 1500

(Stock /block 100,100, 10, -4, -

4, -7) (tool /mill 10, 0, 30, 0)

(color 0,

255, 0) G21

G98

G00 X0 Y0 Z5

G00 X10 Y10 Z5 F120

G01 X60 Y10 Z-3 F120

G01 X60 Y60 Z-3 F120

G01 X10 Y60 Z-3 F120

G01 X10 Y10 Z-3 F120

G00 X0 Y0 Z5

M05 M30

RESULT:

Thus the rectangular milling operations by using CNC milling programming codes

were performed.


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Experiment No.15

CNC LATHE-SIMPLE TURNING

AIM:

To perform the simple turning operation by using CNC programming codes.

Apparatus required:

CNC machine

Personal computer

CNC software

Cutting tool

Work piece Program:

Billet X32 Z70

G21 G98

G28 U0 W0

M06 T02

M03 S1000

G00 X32 Z3

G90 X31 Z-28 F100

X30

X29

X28

G28 U0 W0

M05

M30

RESULT:

Thus the simple turning operation was performed by using CNC Lathe programming codes


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Experiment No.16

CNC LATHE-STEP TURNING

AIM:

To perform the step turning operation by using CNC programming codes. Apparatus required:

CNC machine

Personal computer

CNC software

Cutting tool

Work piece Program:

Billet X32 Z70

G21 G98

G28 U0 W0

M06 T01

M03 S1500

G00 X32 Z5

G90 X31 z-30

X30 Z-25

X28 Z-20

X24 Z-15

G28 U0 W0

M05

M30

RESULT:

Thus the step turning operation was performed by using CNC Lathe programming codes.


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Experiment No.17

CNC LATHE- RIGHT HAND AND LEFT HAND TAPER TURNING

AIM:

To perform the right hand and left hand taper turning operation by using CNC

programming codes.

FOR RIGHT HAND TAPER TURNING

Apparatus required:

CNC machine

Personal computer

CNC software

Cutting tool

Work piece

Program:

Billet X32 Z70

G21 G98

G28 U0 W0

M06 T01

M03 S1500

G00 X32 Z5

G90 X30 Z-30 R-1 F50

R-2

R-3

G28 U0 W0

M05

M30


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FOR LEFT HAND TAPER TURNING Apparatus required:

CNC machine

Personal computer

CNC software

Cutting tool

Work piece

Program:

Billet X32 Z70

G21 G98

G28 U0 W0

M06 T01

M03 S1500

G00 X32 Z5

G90 X30 Z-30 R-1 F50

X28 R2

X26 R3

G28 U0 W0

M05

M30 RESULT:

Thus the right hand and left hand taper turning operation was performed by using CNC Lathe programming codes


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For left Hand taper turning


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Experiment No.18

CNC LATHE - THREAD CUTTING OPERATION

AIM:

To perform thread cutting operation by using CNC programming codes. Apparatus required:

CNC machine

Personal computer

CNC software

Cutting tool

Work piece Program:

Billet X32 Z70

G21 G99

G28 U0 W0

M06 T02

M03 S1500

G00 X32 Z5

G94 X31 Z45 F1.5

X30.5

X30

G00 X29.3 Z2

G76 P1 Q12 R0.7 F0.5

G76 X28.05 Z40 P12 Q12 F0.5

X28.6 R1.4

X28 R1.95

G28 U0 W0

M05

M30

RESULT:

Thus the thread cutting operation was performed by using CNC Lathe programming codes


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Date post:	02-Apr-2018
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COMPUTER AIDED DESIGN AND MANUFACTURING LABORATORY MANUAL...

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