K L University 2009 B.E Industrial Production & Engineering manufacturing science and technology - Question Paper

time three hrs max marks- 60
ans 1 ques. for every unit. ans all the ques.

unit 1

1) a) differentiate ranging from ASA system and orthogonal rake system. (6 marks)

b) derive an expression for shear andle in orthogonal cutting (6 marks)

(or)

2) a) Sketch and discuss any 4 kinds of milling cutters? (6marks)

b) elaborate the assumptions in orthogonal cutting process? differentiate ranging from orthogonal and oblique cutting (6marks)

Unit 2

3) a) Mention various kinds of chip formations and dicuss the favourable conditions in every kind
(6 marks)

b) what is the importance of cutting temperature in machining? discuss various sources of heat in machining (6 marks)

(or)
4) a) Why chip breakers are used in machining? draw any 3 kinds of chip breakers (4 marks)

b) discuss any 2 methods of measuring tool temperature with neat sketch (8 marks)

Unit 3

5) a) elaborate the various kinds of cutting fluids? discuss advantages and disadvantages of cutting fluids in machining. (5 marks)

b) discuss any 4 kinds of tool wear mechanisms. how can you decrease tool wear in machining?
( seven marks)
(or)

6) a) What is the importance of cutting fluids in machining? dicuss the effect of cutting fluids in terms of environmental aspects. ( six marks)

b) Sketch and discuss flank wear and crater wear? how can you measure flank wear in single point cutting tool? discuss at lowest on technique of every. (6 marks)

Unit 4

7) a) What is taylor's equation? discuss the effect of various variables on tool life. (6 marks)

b) Sketch and discuss force system in drilling (6 marks)

(or)

8) a) A high speed tool is used for machining a work piece of mild steel. while machining at a cutting speed of 30m/min, the useful life of the tool is obtained to be 50 min. what will be the tool life if the identical tool is used to cut at a speed of 45m/min, other parameters remaining the identical. presume the value of exponent 'n' of standard Taylor's formula is 0.12 (6 marks)

b) discuss the construction and working of lathe tool dynamometer. (6 marks)

unit 5

9) a) elaborate the properties needed for tool materials? ( four marks)

b) explain merits and demerits of carbon steels and high speed steel materials ( eight marks)

(or)

10) a) How can you choose tool materials for machining hard materials? (6 marks)

b) Expalin the suitability of cemented carbide and ceramic tools as tool materials (6 marks)

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Earning:   Approval pending.