VTU Mechanical Engineering (Semester 6)
Computer Integrated Manufacturing
June 2015
Total marks: --
Total time: --
INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary


1 (a) Define Automation. Explain the different types of automation.
8 M
1 (b) Explain the following automation strategies.
i) Specialization of operator.
ii) Online Inspection.
4 M
1 (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 parts. There are 18 work centres in the plant and the plant operators for an average of 70 production Hr/week . Determine i) Manufacturing lead time ii) Plant capacity iii) Production rate iv) Plant utilization.
8 M

2 (a) Explain synchronous transfer method and Asynchronous transfer method of work transport in automation.
8 M
2 (b) Explain with neat sketches, the following transfer mechanism:
i) Walking beam transfer bar system ii) Geneva mechanism.
12 M

3 Explain the following related to analysis of an automated flow lines:
1) Partial automation.
2) Lower bound approach.
3) Upper bound approach.
4) Effect of storage.
20 M

4 (a) Explain the following terms related to line balancing.
1) Total work context time.
2) Assembly line balance.
3) Line balancing.
6 M
4 (b) The table below defines the defines the precedence relationships and elements times for a new model:
i) Construct the precedence diagram.
ii) if the ideal time=1min
iii) Use Kilsridge and Westers method to assign the work station to each elements and compute the balance delay and line efficiency.
Work elements 1 2 3 4 5 6 7 8 9 10 11 12
Te(min) 0.25 0.45 0.35 0.4 0.32 0.2 0.27 0.7 0.6 0.38 0.5 0.43
Preceded by - 1 1 1 2 2,3 4 4 5 6,7 8 91011
14 M

5 (a) List the principles used in product design for automated assembly.
6 M
5 (b) With a neat sketch, explain elements of parts delivery system.
8 M
5 (c) Define AGVS. List the advantages and application of AGVS.
6 M

6 (a) With a block diagram, explain variant CADD system.
10 M
6 (b) What is Material requirements? Explain the structure of MRP system.
10 M

7 (a) Discuss the advantages and disadvantages of CNC systems.
10 M
7 (b) Explain the fundamental steps involved in a part programming for turning and milling.
10 M

8 (a) Explain the different configuration of robot, with neat sketches.
12 M
8 (b) Explain the following terms related to robots:
i) End effectors ii) Programming methods.
8 M



More question papers from Computer Integrated Manufacturing
SPONSORED ADVERTISEMENTS