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GUJARAT TECHNOLOGICAL UNIVERSITY
Diploma Engineering - SEMESTER–VI • EXAMINATION – SUMMER 2013
Subject Code: 361901 Date: 09/05/2013
Subject Name: Computer Aided Design and
Computer Aided Manufacturing (CAD / CAM)
Time: 10:30 am TO 01:00 pm Total Marks: 70
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. English version is considered to be Authentic
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Q.1 (a) Define CAD. State any five functional areas of CAD. 07
(b) Explain CAD workstation with block diagram and enlist types of input and output devices used in it. 07
Q.2 (a) State different types of graphical terminals. Compare its features. 07
(b) State and compare various types of geometric modelling. 07
OR
(b) Enlist types of CAD software used for solid modelling and write features of any one. 07
Q.3 (a) Write down AUTOCAD commands to draw 3D model for a given component in Fig.1. 07
(b) Explain following AutoCAD commands with suitable example (i) TABSURF (ii) 3D ARRAY (iii) SLICE (iv) UCS 07
OR
Q.3 (a) Write down AUTOCAD commands to draw 3D model for a given component in Fig.2. 07
(b) Explain following G Codes and M Codes in brief.(i) G01 (ii) G02 (iii) G04 (iv) G41 (v) M03 (vi) M06 (vii) M30 07
Q.4 (a) Write short notes with sketch i) Ball screw (ii) Working of ATC 07
(b) Prepare CNC part program for turning using ISO codes of a component given in figure 3 07
OR
Q. 4 (a) Prepare CNC part program for milling using ISO codes of a component given in figure 4. 07
(b) Classify the CNC Machine Tool in brief. 07
Q.5 (a) Write short note on DNC with block diagram. 07
(b) Write short note on (i) canned cycle (ii) subroutines(sub programme) 07
OR
Q.5 (a) Write short notes on i) FMS (ii) Tool compensation with suitable example 07
(b) Define robotics. Give classification of robot and write main elements of robots. 07
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