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Posted By: srinivas Member Level: Gold Posted Date: 29 May 2008
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2007 Andhra Pradesh State Jawaharlal Nehru Technological University Production II B.Tech II Semester Supplimentary Examinations, Aug/Sep 2007 MACHINE TOOL ENGINEERING Question paper
Code No: RR222002 Set No. 1
II B.Tech II Semester Supplimentary Examinations, Aug/Sep 2007
MACHINE TOOL ENGINEERING
(Production Engineering)
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
1. (a) Explain different types of chips. [8]
(b) What are the adverse effects of built up edge? How can we avoid them? [8]
2. (a) What are mandrels and why are they used? [8]
(b) Describe the construction and use of different types of mandrels. [8]
3. Describe briefly about following holders used in capstan lathe. [4x4=16]
(a) Knurling tool holder
(b) Tap holder
(c) Recessing tool holder
(d) V-steady box tool holder
4. (a) With help of neat sketch describe main parts of slotter. [10]
(b) How is slotter machine is specified? Explain [6]
5. (a) What is the general rule regarding the included angle of the drill point and
the hardness of the material being drilled? [6]
(b) What is taper control drilling? Why the spiral point drilling is particularly
adequate for this? [6]
(c) What is the advantage of using a drill Jig for mass production? [4]
6. (a) What are the differences between bed type and planar type milling machine.
[8]
(b) List the various precautions in use of milling cutters. [8]
7. (a) What are the various abrasive machining operations you are familiar with?
Explain their applications & limitations. [8]
(b) What for lapping is used? How much stock is left for lapping? How does it
differ from grinding? What are its advantages and disadvantages? [8]
8. (a) What is lapping? What are its advantages? [6]
(b) Write a brief note on the following [10]
i. Equalising lapping
ii. Form lapping.
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