GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER- VII (New) EXAMINATION — WINTER 2019
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Subject Code: 2172002/2172010 Date: 26/11/2019
Subject Name: Automated Manufacturing - I
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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Q1
(a) What is programmable automation and what are some of its features? 03
(b) What is the difference between hard product variety and soft product variety ? 04
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(c) The following component is to be made using a CNC machining Centre equipped with a FANUC controller. Write a complete manual part program for machining the holes and slots in the plate as shown in fig.1. assume plate thickness to be 10 mm. 07
All Dimension are in mm
Fig 1.
Q2
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(a) List ten strategies for automation and process improvement. 03
(b) Explain the meaning of numerical control. What are the areas where numerical control can be used? 04
(c) Discuss the salient features of point to point, straight line and contouring CNC systems. 07
OR
(c) Explain the use of following codes for CNC turning center: 03
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1) G00, G01, G02,G04
2) G71,G72,G73,G70
3) M02, M03, M05, M30
4) G92,G76,G32
Q3
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(a) What do you understand by machine zero and work zero? Explain. 04
(b) What is the need of recirculation of rolling elements in LM guideways and ballscrews? 03
(c) What are the factors considered while designing the structure of a CNC machine? 04
OR
(a) Explain Automatic Tool Changer(ATC) in CNC machine. 03
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(b) Difference between open loop and closed loop control system in CNC turning machine. 04
(c) Using neat sketches, explain the working principle of incremental and absolute optical encoders. 07
Q.4
(a) What is CMM ? Explain. 03
(b) Difference between forward engineering and reverse engineering. 04
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(c) What is forward sensing in AGVs Terminology? 07
OR
(a) Name the various guidance methods available for automated guided vehicle(AGV). 03
(b) Explain different types of AGV. 04
(c) Difference between an AS/RS and Carousel storage system. 07
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Q.5
(a) Explain the steps of RP techniques. 03
(b) Difference between rail-guided vehicles and automated guided vehicles. 04
(c) Explain carousel storage systems. Write down its application. 07
OR
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(a) Write down application of 3D printer. 03
(b) Classification of rapid prototyping processes. 04
(c) Types of AS/RS systems. Explain in details. 07
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