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Friday, January 8, 2016

VTU BE Computer Integrated Manufacturing 2015 Question Paper

VTU Question Paper
Department of Mechanical
B.E. Degree Examination
Sixth Semester
Computer Integrated Manufacturing
June/July 2015 Question Paper
Max. Marks:100
Time: 3 Hours

Question Paper Code : 10ME61
Sixth Semester B.E. Degree Examination, June/July 2015
Computer Integrated Manufacturing
Time: 3 hrs. Max. Marks: 100
Note: Answer any FIVE full questions, selecting at/east TWO questions from each part.
PART-A
1 a. Define Automation. Explain the different types of automation. (08 Marks)
b. Explain the following automation strategies:
i) Specialization of operator ii) Online Inspection. (04 Marks)
c. The parts produced in a certain batch has to be processed through an average of 6 machines. There are 20 new batches of parts launched each week. Other data as follows:
i) Average operation time = 0.1 Hr ; ii) Average setup time = 5 Hr ;
iii) Average non - operation time = 10 Hr ; iv) Average Batch size = 25 part. There are 18 work centers in the plant and tbe plant operates for an average of 70 production Hr / week. Determine i) Manufacturing lead time ii) Plant capacity
iii) Production rate iv) Plant utilization. (08 Marks)
2 a. Explain Synchronous transfer method and Asynchronous transfer method of work transport in automation. (08 Marks)
b. Explain with neat sketches, the following transfer mechanisms:
i) Walking beam transfer bar system ii) Geneva mechanism. (12 Marks)
3 Explain the following related to analysis of an automated flow lines
a. Partial automation.
b. Lower bound approach.
c. Upper bound approach.
d. Effect of storage. (20 Marks)
4 a. Explain the following terms related to line balancing: (06 Marks)
i) Total work context time ii) Assembly line balance iii) Line balancing.
b. The table below defines the precedence relationships and elements times for a new model:
i) Construct the precedence diagram
ii) If the Ideal time = 1 min
iii) Use Kilsridge and Westers method to assign the work station to each element and
compute the balance delay and line efficiency. (14 Marks)


PART-B
5 a. List the principles used in product design for automated assembly.
b. With a neat sketch, explain elements of parts delivery system.
c. Define AGVS. List the advantages and applications of AGVS.

6 a. With a block diagram, explain variant CADD system.
b. What is Material requirement? Explain the structure of a MRP system.

7 a. Discuss the advantages and disadvantages of C C systems. (10 Marks)
b. Explain the fundamental steps involved in part programming for turning and milling. (10 Marks)
8 a. Explain the different configuration of robot, with neat sketches.
b. Explain the following terms related to robots:
i) End effectors ii) Programming methods.
*****

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