JNTU M.TECH COMPUTER AIDED MANUFACTURING-(CAM) QUESTION PAPER SEPTEMBER-2009

Code No: B0401

JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
M. Tech II Semester Regular Examinations, September 2009
COMPUTER AIDED MANUFACTURING
( CAD/CAM )
Time: 3hours        Max.Marks:60
Answer any FIVE questions
All questions carry equal marks
– – –

1.a] Define NC MACHINE TOOL AXIS SYSTEM for milling. [2]
b] Explain three basic types of motion control systems schematically. [10]

2. Derive transfer functions for open and closed loop control systems.

3.a] What are the design criteria to be used in designing CNC machine tools?
b] Briefly explain the ISO coding system used for carbide tool fits.

4.a] What are the distinct approaches of adaptive control systems? Explain them.  [8]
b] What are the advantages of CNC.   [4]

5. Write a manual part programming for the component shown in figure.
Tools used are
1.  Centre drill  2. Twist drill φ  5mm   3.  Twist drill φ 10mm
4.  Slot drill φ 10mm.
Assume feed rate and speed to cut mild steel.
CAD-CAM
6. Write a computer aided part programming for the component shown in figure .
Assume feed rate and steel to cut mild steel.
CAD-CAM
7.a] What is part family?  [2]
b] Explain any two part classification and coding systems. [10]

8.a] What are the various types of machine cells?  [9]
b] What are the benefits of GT.    [3]

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