Reg. No. :

M.E. DEGREE EXAMINATION, JANUARY 2010

First Semester

CAD/CAM

CC 9211 — COMPETITIVE MANUFACTURING SYSTEMS

(Regulations 2009)

Time: Three hours Maximum : 100 Marks

Answer ALL Questions

PART A — (10 × 2 = 20 Marks)

1. What are the different numerical control interpolation methods for continuous

path control?

2. State the recommendations and principles that can be applied in product

design to facilitate automated assembly.

3. List the various uses of parts classification and coding scheme.

4. What are the benefits that can be expected from an FMS?

5. What are the advantages of system simulation?

6. List atleast four manufacturing data.

7. State the four principles of lean production.

8. Define Total Productive Maintenance.

9. What are the benefits of flexible work force?

10. Why is “kanban” system called a “pull” or demand system of inventory control?

Question Paper Code: W7616 3

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PART B — (5 × 16 = 80 Marks)

11. (a) (i) What are the strategies for automation? Explain them. (10)

(ii) State the applications of industrial robots. (6)

Or

(b) (i) What are the additional features of CNC over NC? Explain them.

(10)

(ii) Discuss the principles of the concept Design For Assembly (DFA).

(6)

12. (a) The following table lists the weekly quantities and routings of ten parts

that are considered for cellular manufacturing in a machine shop. Parts

are identified by letters, and machines are identified numerically. For the

data given,

(i) Develop the part-machine incidence matrix. (4)

(ii) Apply the rank order clustering technique to the part-machine

incidence matrix to identify logical part families and machine

groups and (6)

(iii) Determine the most logical sequence of machine for the machine

groups identified. (6)

Part Weekly Quantity Machine Routing

A 50 3→2→7

B 20 6→1

C 75 6→5

D 10 6→5→1

E 12 3→2→7→4

F 60 5→1

G 5 3→2→4

H 100 3→2→4→7

I 40 2→4→7

J 15 5→6→1

Or

(b) (i) List the various functions performed by the computer control

system in FMS and describe them. (10)

(ii) State the situations where Group Technology (GT) and cellular

manufacturing can be applied. State the benefits of GT. (6)

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13. (a) (i) How are software and hardware selected for the applicants of

manufacturing automation? (10)

(ii) State the reasons why companies need databases. (6)

Or

(b) (i) State the factors that are critical to database design and explain

why. (10)

(ii) What are the applications of simulation in CAD/CAM? (6)

14. (a) (i) What are the several basic steps that would lead to start Total

Productive Maintenance? Explain them. (10)

(ii) State the conditions that need to be fulfilled in order to implement

JIT concept effectively. (6)

Or

(b) (i) Explain Poka Yoke systems with two examples. (10)

(ii) Discuss Hoshin planning with a case study. (6)

15. (a) (i) Discuss the effect of setup reduction on Economic Order Quantity

(EOQ) and Inventory Cost. Also state the various approaches for

setup time reduction. (10)

(ii) Compare lean production and mass production. (6)

Or

(b) (i) Discuss the characteristics of Just-In-Time (JIT). (10)

(ii) Explain how a simple kanban system works. (6)

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