Download JNTU M.TECH 2-Semester ADVANCES IN CNC MACHINES JULY/AUG-2006 Exam Question Paper | Indian Shout

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Download JNTU M.TECH 2-Semester ADVANCES IN CNC MACHINES JULY/AUG-2006 Exam Question Paper

Code No: 53211/MT
M.Tech. II-Semester Examinations, July/August-2006.

ADVANCES IN CNC MACHINES
(Advanced Manufacturing Systems)
Time: 3 hours       Max. Marks: 60

Answer any FIVE questions
All questions carry equal marks

– – –

1.  Explain the following terms:
(a) Incremental and absolute positioning system
(b) Point to point NC sytem
(c) Closed loop and Open loop system

2.a) Explain the various steps involved in the manual part
programming.
b) What is canned cycle?  Explain the different canned cycles.

3.a) Discuss any five motion statements used in APT programming.
b) What is automatic tool path generation?  Discuss importance in
NC programming.

4. Describe the following tooling systems used for CNC machines:
a)  Automatic head changer
b)  Interchangeable tooling system
c)  Quick change tooling system

5.a) Enumerate the advantages and disadvantages of DNC over CNC
system
b) Draw the block diagram of Adaptive control with constraints and
discuss briefly.

6.a) Explain the stereolithography process with the help of neat
schematic diagram.
b) Discuss the important applications of rapid prototyping.

7.a) Discuss the various functions of post processor
b)  Discuss the major variables in the DAPP based post processor.

8.a) What are applications of micro controllers in CNC machines?
Explain.
b) Describe the basic hardware components of PLCs.

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