GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-V (NEW) EXAMINATION - SUMMER 2019
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Subject Code: 2152507Subject Name: Tool Engineering
Time: 02:30 PM TO 05:00 PM
Instructions:
Attempt all questions.
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- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
Q.1
(a) Define with example the concept of “Tool Design” [03 MARKS]
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(b) How cutting tools are classified name few tools of each type. [04 MARKS](c) Explain the mechanism of chip formation and discuss the types of chips with neat sketch [07 MARKS]
Q.2
(a) Draw neat sketch of single point cutting tool with label of six major angles and other terminology of it. [03 MARKS]
(b) Classify the types of cutting fluids and state their application [04 MARKS]
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(c) Explain designation of cutting tools- ASA system and ORS system. [07 MARKS]OR
(c) Demonstrate configuration and working principle of some common type chip breakers [07 MARKS]
Q.3
(a) What it means by tool life? Which are the factors affecting tool life. [03 MARKS]
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(b) Classify, illustrate the properties and suggest the applications of the cutting tool materials [04 MARKS](c) Draw Merchant’s Circle Diagram and show the forces and their relations [07 MARKS]
OR
(a) State the effects of cutting temperature on cutting tool and job. [03 MARKS]
(b) Define single point “cutting tool. Explain various methods of manufacturing single point cutting tool. [04 MARKS]
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(c) In an orthogonal:cutting operation Cutting force /v = 1000 N, Feed force Fi=0, Rake angle= 45°, Shear angle= 45° [07 MARKS]Determine(a) the coefficient of friction, (b) the shear power if Shear velocity Vs =20 m/min, and (c) the cutting power.
Q4
(a) Explain fool proofing with neat sketch. [03 MARKS]
(b) Explain types of clamping devices with neat sketch. [04 MARKS]
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(c) Explain the principle of ‘Six point location’ [07 MARKS]OR
(a) Explain in brief hydraulic clamp. [03 MARKS]
(b) Explain various multi point cutting tools with their features, working and applications. [04 MARKS]
(c) How cutting force is calculated for press work. What are the various methods for reducing force requirements? [07 MARKS]
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Q5(a) Name and explain various sheet metal operations. [03 MARKS]
(b) What is shear on punch and die? How it is applied to punch and die for blanking and piercing operation? [04 MARKS]
(c) Design a jig for a pre-machined hollow metallic disc six equispaced blind holes to be drilled radially. [07 MARKS]
OR
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(a) Explain in brief Indexing jig. [03 MARKS](b) What is center of pressure for sheet metal working? [04 MARKS]
(c) Explain in brief two pass layout in press work with suitable example. [07 MARKS]
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Date: 20/06/2019
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Total Marks: 70This download link is referred from the post: GTU BE 2019 Summer Question Papers || Gujarat Technological University
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