Download GTU BE/B.Tech 2018 Winter 7th Sem New 2173408 Design Of Machine Tools Question Paper

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GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-VII (NEW) EXAMINATION - WINTER 2018

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Subject Code: 2173408 Date: 19/11/2018
Subject Name: Design of Machine Tools
Time: 10:30 AM TO 01:00 PM Total Marks: 70

Instructions:

1. Attempt all questions.

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2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

MARKS

Q.1 (a) Explain the hydraulic transmission 03
(b) Explain the mechanical transmission 04

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(c) Explain the classification of speed boxes. 07

Q.2 (a) Explain the classify the speed box 03
(b) Explain the working motions of a machine tool 04
(c) Explain the auxiliary motion in machine 07

OR

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(c) Explain the design of speed box 07

Q.3 (a) Explain the aim of speed feed regulation 03
(b) Explain the functions of machine tool structures and their requirements 04
(c) Explain the design of feed box 07

OR

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Q.3 (a) Design of spindle for deflection of spindle axis due to bending 03
(b) Explain the general design procedure of column structure. 04
(c) Explain the design criteria for machine tool structures 07

Q.4 (a) Describe the functions of spindle unit 03
(b) Explain the shapes of slid ways 04

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(c) Explain the factors affecting stiffness of machine tool structure and methods of improving it. 07

OR

Q.4 (a) Describe the requirements of spindle unit 03
(b) Explain the factors affecting on design of sliding-friction power screws. 04
(c) Explain the rail travelling components 07

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Q.5 (a) Explain the hoisting components 03
(b) Explain the application of slide way profiles and their combinations 04
(c) Explain the static stiffness 07

OR

Q.5 (a) Explain the dynamics stiffness 03

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(b) Explain materials of machine tool structures for bar subjected to tension only 04
(c) Explain different materials used for designing the hoist. 07

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