GTU BE 6th Semester 2161504 Metal Cutting and Advanced manufacturing processes Summer 2018 Question Paper

1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE – SEMESTER ?VI (NEW) – EXAMINATION ? SUMMER 2018
Subject Code:2161504 Date:05/05/2018
Subject Name:Metal Cutting & Advanced manufacturing processes
Time:10:30 AM to 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

Q.1 (a) What do you understand by economics of metal cutting? 03
(b) Explain the use of Merchant?s circle diagram. 04
(c) Discuss calculation of the work done and power required in
metal cutting?
07

Q.2 (a) What is chip reduction coefficient? 03
(b) Discuss the application of Ultrasonic Machining process. 04
(c) Describe electro chemical grinding process in detail. 07
OR
(c) Write note on Hydro forming process. 07
Q.3 (a) What is machinability? 03
(b) Give the advantages of CAD. 04
(c) Write note on advanced cutting tool materials. 07
OR
Q.3 (a) Discuss tool life. 03
(b) Discuss the effects of various tool angles on tool wear and
tool life.
04
(c) Explain with the help of neat sketch the complete
geometry of a single point cutting tool.
07
Q.4 (a) When is negative rake cutting employed? 03
(b) Discuss various tool room functions. 04
(c) Differentiate between orthogonal cutting and oblique
cutting.
07
OR
Q.4 (a) Give name various elements of metal cutting. 03
(b) Compare CNC and DNC system. 04
(c) Discuss various types of chips formed in metal cutting and
conditions under which each type is formed.
07
Q.5 (a) Discuss NC system. 03
(b) Discuss Open and closed system. 04
(c) Discuss Computer Integrated Manufacturing (CIM). 07
OR
Q.5 (a) What are Jigs and fixtures used for? 03
(b) Discuss principles of location for jig and fixture design. 04
(c) How are tools classified? State three examples of each. 07
*************