CAD LAB MANUAL

STANDARD TITLE BLOCK IN A3 SIZE SHEET

AIM:

To draw the standard title block in A3 size sheet using Auto CAD commands.

Procedure:

1.       Open the Auto CAD software by using following steps.

2.       Set the drawing limits to A3 size.

3.       Draw the rectangle using lower left corner (0,0) and upper right corner (490,297).

4.       Enter zoom and all.

5.       Set dimscale to 15.

6.       Set Lt scale to 5.

7.       Draw the title block as per the dimension given to the lower right of the rectangle as per given drawing.

8.       Dimension all the items.

9.       Save the drawing.

10.   Check all and take the print out.

Commands used:

1. Starting commands:

                Limits, Zoom all, ltscale, dimscale, dimstyle.

2. Drawing commands:

                Line, rectangle, circle, polygon, multiline text.

3. Edit commands:

                Erase, move, copy, trim, extend, chamfer, fillet.

4. Dimensioning commands:

                Dimlinear, Dimalligned, Dimradius, Dimdiameter.

Result:

                Thus the title block is drawn in A3 size sheet by using Auto CAD commands.

SIMPLE DIAGRAM USING ABSOLUTE, RELATIVE, POLAR CO-ORDINATE SYSTEM

AIM:

                To draw the given  simple diagram using absolute, relative, polar co-ordinate system.

Procedure:

1.       Open the Auto CAD software and set the starting commands.

2.       Draw the simple diagram using draw commands and modify commands using absolute, relative, polar co-ordinate system.

3.       Draw the title block in A3 size templates.

4.       Set the dimension style and give the dimension using dimension commands.

5.       Check all the diagrams and take print out.

Commands used:

1. Starting commands:

                Limits, Zoom all, ltscale, dimscale, dimstyle.

2. Drawing commands:

                Line, rectangle, circle, polygon, multiline text.

3. Edit commands:

                Erase, move, copy, trim, extend, chamfer, fillet.

4. Dimensioning commands:

                Dimlinear, Dimalligned, Dimradius, Dimdiameter.

Result:

                Thus the given simple diagram is drawn in Auto CAD by using the absolute, relative, polar co-ordinate system.

ORTHOGRAPHIC VIEWS OF CYLINDER AND PRISM

AIM:

                To draw the orthographic views of cylinder and prism using Auto CAD commands.

Procedure:

1.       Open the Auto CAD software and set the starting commands.

2.       Draw the title block in A3 size templates.

3.       Draw the front view and top view of the cylinder and prism using draw commands and modify commands.

4.       Set the dimension style and give the dimension using dimension commands.

5.       Check all the diagrams and take print out.

Commands used:

1. Starting commands:

                Limits, Zoom all, ltscale, dimscale, dimstyle.

2. Drawing commands:

                Line, rectangle, circle, polygon, multiline text.

3. Edit commands:

                Erase, move, copy, trim, extend, chamfer, fillet.

4. Dimensioning commands:

                Dimlinear, Dimalligned, Dimradius, Dimdiameter.

Result:

                Thus the orthographic views of cylinder and prism is drawn by using Auto CAD commands.

ORTHOGRAPHIC VIEWS OF CONE AND PYRAMID

AIM:

                To draw the orthographic views of cone and pyramid using Auto CAD commands.

Procedure:

1.       Open the Auto CAD software and set the starting commands.

2.       Draw the title block in A3 size templates.

3.       Draw the front view and top view of the cone and pyramid using draw commands and modify commands.

4.       Set the dimension style and give the dimension using dimension commands.

5.       Check all the diagrams and take print out.

Commands used:

1. Starting commands:

                Limits, Zoom all, ltscale, dimscale, dimstyle.

2. Drawing commands:

                Line, rectangle, circle, polygon, multiline text.

3. Edit commands:

                Erase, move, copy, trim, extend, chamfer, fillet.

4. Dimensioning commands:

                Dimlinear, Dimalligned, Dimradius, Dimdiameter.

Result:

                Thus the orthographic views of cone and pyramid is drawn by using Auto CAD commands.

PARABOLA, SPIRAL AND INVOLUTE CURVES

AIM:

                To draw the parabola, spiral and involute curves using B-spline or cubic spline in Auto CAD commands.

Procedure:

1.       Open the Auto CAD software and set the starting commands.

2.       Draw the title block in A3 size templates.

3.       Draw the parabola, spiral and involute curves using B-spline or cubic spline.

4.       Set the dimension style and give the dimension using dimension commands.

5.       Check all the diagrams and take print out.

Commands used:

1. Starting commands:

                Limits, Zoom all, ltscale, dimscale, dimstyle.

2. Drawing commands:

                Line, rectangle, circle, polygon, multiline text.

3. Edit commands:

                Erase, move, copy, trim, extend, chamfer, fillet.

4. Dimensioning commands:

                Dimlinear, Dimalligned, Dimradius, Dimdiameter.

Result:

                Thus the parabola, spiral and involute curves using B-spline or cubic spline is drawn by using Auto CAD commands.

ORTHOGRAPHIC VIEWS OF MIXIE BASE AND OPEN BEARING

AIM:

                To draw the orthographic views of mixie base and open bearing using Auto CAD commands.

Procedure:

1.       Open the Auto CAD software and set the starting commands.

2.       Draw the title block in A3 size templates.

3.       Draw the front view and top view of the mixie base and open bearing using draw commands and modify commands.

4.       Set the dimension style and give the dimension using dimension commands.

5.       Check all the diagrams and take print out.

Commands used:

1. Starting commands:

                Limits, Zoom all, ltscale, dimscale, dimstyle.

2. Drawing commands:

                Line, rectangle, circle, polygon, multiline text.

3. Edit commands:

                Erase, move, copy, trim, extend, chamfer, fillet.

4. Dimensioning commands:

                Dimlinear, Dimalligned, Dimradius, Dimdiameter.

Result:

                Thus the orthographic views of mixie base and open bearing is drawn by using Auto CAD commands.

ORTHOGRAPHIC VIEWS OF TOOL POST AND V BLOCK

AIM:

                To draw the orthographic views of tool post and V block using Auto CAD commands.

Procedure:

1.       Open the Auto CAD software and set the starting commands.

2.       Draw the title block in A3 size templates.

3.       Draw the front view and top view of the tool post and V block using draw commands and modify commands.

4.       Set the dimension style and give the dimension using dimension commands.

5.       Check all the diagrams and take print out.

Commands used:

1. Starting commands:

                Limits, Zoom all, ltscale, dimscale, dimstyle.

2. Drawing commands:

                Line, rectangle, circle, polygon, multiline text.

3. Edit commands:

                Erase, move, copy, trim, extend, chamfer, fillet.

4. Dimensioning commands:

                Dimlinear, Dimalligned, Dimradius, Dimdiameter.

Result:

                Thus the orthographic views of tool post and V block is drawn by using Auto CAD commands.

SECTIONAL VIEWS OF CYLINDER AND PRISMS

AIM:

                To draw the sectional views of cylinder and prisms using Auto CAD commands.

Procedure:

1.       Open the Auto CAD software and set the starting commands.

2.       Draw the title block in A3 size templates.

3.       Draw the sectional views of cylinder and prisms using draw commands and modify commands.

4.       Set the dimension style and give the dimension using dimension commands.

5.       Check all the diagrams and take print out.

Commands used:

1. Starting commands:

                Limits, Zoom all, ltscale, dimscale, dimstyle.

2. Drawing commands:

                Line, rectangle, circle, polygon, multiline text.

3. Edit commands:

                Erase, move, copy, trim, extend, chamfer, fillet.

4. Dimensioning commands:

                Dimlinear, Dimalligned, Dimradius, Dimdiameter.

Result:

                Thus the sectional views of cylinder and prisms is drawn by using Auto CAD commands.

SECTIONAL VIEWS OF CONE AND PYRAMIDS

AIM:

                To draw the sectional views of cone and pyramids using Auto CAD commands.

Procedure:

1.       Open the Auto CAD software and set the starting commands.

2.       Draw the title block in A3 size templates.

3.       Draw the sectional views of cone and pyramids using draw commands and modify commands.

4.       Set the dimension style and give the dimension using dimension commands.

5.       Check all the diagrams and take print out.

Commands used:

1. Starting commands:

                Limits, Zoom all, ltscale, dimscale, dimstyle.

2. Drawing commands:

                Line, rectangle, circle, polygon, multiline text.

3. Edit commands:

                Erase, move, copy, trim, extend, chamfer, fillet.

4. Dimensioning commands:

                Dimlinear, Dimalligned, Dimradius, Dimdiameter.

Result:

                Thus the sectional views of cone and pyramid is drawn by using Auto CAD commands.

ISOMETRIC PROJECTION OF MACHINE BLOCK, CI CASTING AND ROD SUPPORT

AIM:

                To draw the isometric projection of machine block, CI casting and rod support using Auto CAD commands.

Procedure:

1.       Open the Auto CAD software and set the starting commands.

2.       Draw the title block in A3 size templates.

3.       Set the GRID style in Isometric option.

4.       Set ORTHO mode on.

5.       Draw the left, right and top phase diagram in left plane, right plane and top plane respectively.

6.       Give the dimension using aligned option then oblique the dimension with respect to the plane axes.

7.       Check all the diagrams and take print out.

Commands used:

1. Starting commands:

                Limits, Zoom all, ltscale, dimscale, dimstyle.

2. Drawing commands:

                Line, rectangle, circle, polygon, multiline text.

3. Edit commands:

                Erase, move, copy, trim, extend, chamfer, fillet.

4. Dimensioning commands:

                Dimlinear, Dimalligned, Dimradius, Dimdiameter.

Result:

                Thus the isometric projection of machine block, CI casting and rod support is drawn by using Auto CAD commands.

3D MODEL OF ROD SUPPORT AND OBTAINING MULTIVIEW DRAWINGS

AIM:

                To draw the 3d model of rod support and obtaining multi view drawings

Using Auto CAD commands.

Procedure:

1.       Open the Auto CAD software and set the starting commands.

2.       Draw the title block in A3 size templates.

3.       Set the view-3d view-sw isometric view.

4.       Draw the top view and give extrude, subtract and intersect commands to build the model.

5.       Give the dimension using aligned option.

6.       Check all the diagrams and take print out.

Commands used:

1. Starting commands:

                Limits, Zoom all, ltscale, dimscale, dimstyle.

2. Drawing commands:

                Line, rectangle, circle, polygon, multiline text.

3. Edit commands:

                Erase, move, copy, trim, extend, chamfer, fillet.

4. Dimensioning commands:

                Dimlinear, Dimalligned, Dimradius, Dimdiameter.

Result:

                Thus the 3d model of rod support and obtaining multi view drawings are obtained from 3D model by using Auto CAD commands.

PLAN OF RESIDENTIAL BUILDING

AIM:

                To draw the plan of residential building by using Auto CAD commands.

Procedure:

1.       Open the Auto CAD software and set the starting commands.

2.       Draw the title block in A3 size templates.

3.       Draw the plan of residential building using draw commands and modify commands.

4.       Set the dimension style and give the dimension using dimension commands.

5.       Check all the diagrams and take print out.

Commands used:

1. Starting commands:

                Limits, Zoom all, ltscale, dimscale, dimstyle.

2. Drawing commands:

                Line, rectangle, circle, polygon, multiline text.

3. Edit commands:

                Erase, move, copy, trim, extend, chamfer, fillet.

4. Dimensioning commands:

                Dimlinear, Dimalligned, Dimradius, Dimdiameter.

Result:

                Thus the plan of residential building is drawn by using Auto CAD commands.

SIMPLE STEEL TRUSS

AIM:

                To draw the simple steel truss by using Auto CAD commands.

Procedure:

1.       Open the Auto CAD software and set the starting commands.

2.       Draw the title block in A3 size templates.

3.       Draw the simple steel truss using draw commands and modify commands.

4.       Set the dimension style and give the dimension using dimension commands.

5.       Check all the diagrams and take print out.

Commands used:

1. Starting commands:

                Limits, Zoom all, ltscale, dimscale, dimstyle.

2. Drawing commands:

                Line, rectangle, circle, polygon, multiline text.

3. Edit commands:

                Erase, move, copy, trim, extend, chamfer, fillet.

4. Dimensioning commands:

                Dimlinear, Dimalligned, Dimradius, Dimdiameter.

Result:

                Thus the simple steel truss is drawn by using Auto CAD commands.