8/19/2019 Assignment3 PP II..

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MGM'S COLLEGE OF ENGINEERING AND TECHNOLOGY,KAMOTHE, NAVI-MUMBAI

Assignment: 3

Subject: Production Process II Date of submission:

Part-A

1. Explain features of machining processes.(3)

2. Explain concept of cutting speed.(3)

3. What is shear plane?(3)

4. What are tool angles?(3)

5. What is tool life?

(3)6. Explain chip formation.

(3). What is chip !elocit"?

(3)#. What is coe$cient of friction?

(3)%. &ist di'erent cutting forces.

(3)1 .What is feed?

(2)

Part-BQ.1 Answer the fo owing:

1. eri!e expression of *erchant+s theor" ,ith *erchant circle diagram.(#)

2. eri!e expression of shear plane angle and coe$cient of friction in termsof cutting forces and tool angles.(6)

3. -n orthogonal cutting *. component is performed on lathe ,ith 15 ra/eangle0 depth of cut 2mm and feed rate 2mm re!. the cutting speed is1 5m mm. chip thic/ness ratio is .3. he tangential cutting force is 41and the feed force is 1 . alculate a) shear angle ) chip !elocit" c)coe$cient of friction. (6)

Q.! Answer the fo owing:

1. iscuss !arious tool angles.(6)

2. What is orthogonal and o li7ue cutting? Explain each in detail.(6)

3. 8n an orthogonal cutting operation on a lathe0 follo,ing o ser!ations ,ereta/en chip thic/ness9 .5mm0 feed9 .3mm re!0 ,idth of cut92.#mm0tangential cutting force912 0 feed thrust force935 0 ra/e angle95 .

8/19/2019 Assignment3 PP II..

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MGM'S COLLEGE OF ENGINEERING AND TECHNOLOGY,KAMOTHE, NAVI-MUMBAI

alculate a) shear force ) ac/:up force c) frictional force d) coe$cient offriction at chip:tool interface. (#)

Q.3 Answer the fo owing.

1. Explain machinea ilit" in detail.(6)

2. iscuss heat generation and dissipation during metal cutting in detail.(6)

3. Explain tool geometr" for t"pical cutting tools.(#)