Subject Code: 2131903
GUJARAT TECHNOLOGICAL UNIVERSITY
SEMESTER- III (New) EXAMINATION — WINTER 2019
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Enrolment No.
Subject Name: Manufacturing Process-1
Date: 28/11/2019
Time: 02:30 PM TO 05:00 PM
Total Marks: 70
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Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
Q.1 (a) What is Boring Process? Compare Boring and Reaming process. [03]
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(b) Explain Horizontal Boring Machine with neat sketch. [04]
(c) Explain Different Types of Broaching Machines with neat sketch. [07]
Q.2 (a) Explain the working Principal of Shaper machine with neat sketch. [03]
(b) Write down difference between shaper and planer Machine. [04]
(c) Explain Radial drilling machine with neat sketch. [07]
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OR
(c) Explain any six operations performed on drilling machine with neat sketch. [07]
Q.3 (a) What is dressing of grinding wheel? Which operation is required to change shape of grinding wheel? [03]
(b) Explain centreless internal grinding operation with neat diagram. [04]
(c) Derive expression for shear angle & chip thickness ratio in Tool Geometry. [07]
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OR
(a) What is an Abrasive? How are abrasive Classified? [03]
(b) Enlist and explain various abrasives used in grinding wheels. [04]
(c) What is Tool Signature and Tool Geometry? Explain importance of tool angles for single point cutting tool in brief. [07]
Q.4 (a) Explain the difference between three jaw chuck and four jaw chuck. [03]
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(b) Explain following parts of a lathe’by neat sketches:(i) Lathe Bed (ii) Carriage (iii) Headstock (iv) Tailstock [04]
(c) Name different methods of taper turning? Describe any one of these methods using neat sketch. [07]
OR
(a) Describe any two work holding devices used on the lathe. [03]
(b) Using neat sketches, describe any four operations that can be carried on lathe machines. [04]
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(c) Explain Thread cutting operation on lathe using gear train and chasing dial. [07]
Q.5 (a) Differentiate between up milling Process and down milling Process. [03]
(b) What is indexing? Describe direct indexing, with example. [04]
(c) With the help of a neat sketch explain the column and knee type milling machine and name its main parts. [07]
OR
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(a) State the working principle of milling machine with Neat sketch. [03]
(b) Explain any four types of milling operations using neat sketches. [04]
(c) Explain any one Alignment test of milling machine with neat sketch. [07]
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