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Posted By: sunil Member Level: Diamond Posted Date: 01 Aug 2008
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2006 Jawaharlal Nehru Technological University II B.Tech II Semester Regular Examinations, Apr/May 2006, MACHINE TOOL ENGINEERING (Production Engineering) Set No. 4 Question paper
Code No: RR222002 Set No. 4
II B.Tech II Semester Regular Examinations, Apr/May 2006
MACHINE TOOL ENGINEERING
(Production Engineering)
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
? ? ? ? ?
1. (a) Derive an expression for optimum value of cutting speed. [8]
(b) While machining a mild steel bar with H.S.S tool the Cutting speed is 32m/min,
tool life is 50 min, If cutting speed is increased by 50%, how tool life is affected.
Take n=0.2. [8]
2. Give neat diagram of engine lathe, and describe its main parts and controls. [16]
3. (a) What are primary and secondary motions of turret and capstan lathes? Ex-
plain. [6]
(b) Describe with help of neat sketch, the working of collet chuck. And types of
collet chucks? [10]
4. (a) What is planer? Illustrate and describe its working principle. [8]
(b) Give detailed classification of planer machines. [8]
5. (a) Explain with neat sketches the constructional features of a twist drill and label
the important features [10]
(b) What is the function of a drill Jig?What provisions it must include? [6]
6. Show with sketches and explain the following milling cutter angles [4x4=16]
(a) Radial rake angle
(b) Axial rake angle
(c) Approach angle
(d) Side clearance angle
7. Explain with a neat sketch the chip formation during surface grinding. Describe
the expression for the various forces generated. [16]
8. (a) Explain clearly Honing tools with neat sketches . [12]
(b) State the differences between Honing and Lapping.
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