GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-VII(NEW) EXAMINATION - SUMMER 2019
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Subject Code:2173408 Date:14/05/2019Subject Name: Design of Machine Tools
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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MARKS
Q.1 (a) Explain the working motions of a machine tool 03
(b) Explain the mechanical transmission 04
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(c) Explain in brief, general engineering design process to machine 07
Q.2 (a) Explain the classify the speed box 03
(b) Explain the machine tool structures requirements. 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 static stiffness 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) 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 design of feed box 07
OR
Q.5 (a) Explain the protecting devices for slide ways 03
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(b) Explain materials of machine tool structures for bar subjected to tension 04
(c) Explain different materials used for designing the hoist. 07
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