Download GTU BE/B.Tech 2019 Winter 8th Sem New 2182002 Automated Manufacturing Ii Question Paper

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GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER- VIII (New) EXAMINATION — WINTER 2019

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Subject Code: 2182002 Date: 29/11/2019

Subject Name: Automated Manufacturing - 11

Time: 02:30 PM TO 05:00 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.

Q.1

1. (a) Compare the parameters for given task to a human operator and a robot. [03 MARKS]
2. (b) Enlist different elements of robot with neat sketch and explain any two of them. [04 MARKS]

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3. (c) Consider Schematic of a 3-DOF polar arm shown in figure 1. Using D-H notation Construct
   1. Set of robotic coordinate frame,
   2. A table for joint parameter
   3. Each joint individual matrix [07 MARKS]

Fig.1. 3DOF Polar Arm

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Q.2

1. (a) Evaluate “Accuracy is an absolute concept, repeatability is relative”. [03 MARKS]
2. (b) Classify the various types of grippers used in robot and explain magnetic grippers. [04 MARKS]
3. (c) Give suitable example of quality control in industry handled with the help of robotic vision system. Describe the set up and other requirements with the help of appropriate diagrams. [07 MARKS]

OR

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1. (a) Why robot is called 24x7 worker? What is major advantage of a robot? [07 MARKS]
2. (b) Explain tactile sensors used in a robot. [03 MARKS]
3. (c) Write a short note on a robot used in spray painting application. [04 MARKS]

Q.3

1. (a) Explain the rank order clustering techniques to the part-machine incidence matrix. [07 MARKS]

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OR

1. (a) What are the objectives of cellular manufacturing? [03 MARKS]
2. (b) Explain the working principle of Hollier Method in deciding the sequence of machines and material flow. [04 MARKS]
3. (c) What is the part family in GT? Explain the design attribute and manufacturing attribute in GT. [07 MARKS]

Q.4

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1. (a) Explain the poly code in group technology. [03 MARKS]
2. (b) List the different flexibilities associated with FMS. Explain any two in brief. [04 MARKS]
3. (c) Basic Structure of the Opitz Parts Classification and Coding System. [07 MARKS]

Q.4

1. (a) Explain the concept of composite job in GT [03 MARKS]

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2. (b) Difference between FMC and FMS. [04 MARKS]
3. (c) What is CIM? Explain with neat sketch CIM wheel? [07 MARKS]

Q.5

1. (a) Compare the different manufacturing system with respect to flexibility and production quantity. [03 MARKS]
2. (b) What are the advantages of Group Technology [04 MARKS]

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3. (c) Differentiate between MRP I and MRP II [07 MARKS]

OR

1. (a) Enlist the limitation of FMS. [03 MARKS]
2. (b) Explain the input parameter of MRP I system [04 MARKS]
3. (c) A flexible machining system consists of load/unload station and two machining work stations. Station 1 is the load/unload station. Station 2 performs milling operations and consists of two servers (two identical CNC milling machines). Station 3 has one server that performs drilling (one CNC drill press). The stations are connected by a part handling system that has four work carriers. The mean transport time is 3.0 min. the FMS produces two parts, A and B. the part mix fractions and process routings for the two parts presented in the table below. The operation frequency fijx= 1.0 for all operations. Determine
   1. (a) maximum production rate of FMS,

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   2. (b) corresponding production rates of each product,
   3. (c) utilization of each station and,
   4. (d) number of busy servers at each station. [07 MARKS]

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