7/26/2019 AME1121_Machine Tools,09-01-2014_Jan 2014

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Course Code : AME1121 Reg. No :

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GAYATRI VIDYA PARISHAD COLLEGE OF ENGINEERING (AUTONOMOUS)Madhurawada, Visakhapatnam-530 048.

Affiliated to JNT University K, KakinadaB.Tech. V-Semester Regular & Supplementary Examinations, Dec-13/ Jan-1

Machine Tools(Mechanical Engineering)

Date : 09-01-2014 Time : 3 Hours Max. Marks : 60

1. Question No. 1 is Compulsory.2.

Answer any FOURfrom questions 2 to 8.

3. All parts of a Question must be answered in one place to get valued.

1. a) Write the difference between jig and fixture.

b) Define tool life. Write the tailors tool life equation.c) What is orthogonal cutting and oblique cutting?

d) How the Lathe machine is specified?

e) Differentiate between drilling and boring operation.f) What is indexing? List the various methods of indexing.g) Write the classification of grinding machines.

h) What is Lapping?

2 Mark

2 Mark2 Mark

2 Mark

2 Mark2 Mark2 Mark

2 Mark

2. a) What are the various types of chips? Write the cutting conditions for the formation of thesechips.

b) In an orthogonal turning operation on Lathe the following data were obtained cuttingforce=120 kg; Feed force=30 kg. Back rake angle=15

0, feed rate=0.2mm/rev

chipthickness=0.3mm, cutting speed=100m/min, Depth of cut=0.4mm, workpiecediameter=120mm. Calculate chipthickness raio, shear angle, coefficient of friction, friction

angle.

5 Marks

6 Marks

3. a) What is taper? Explain any one taper turning method with sketch.b) Write the differences between capstan and turret Lathe.

5 Marks6 Marks

4. a) Explain the parts of a shaping machine with neat sketch.

b) Write the differences between shaper and planner.

7 Marks

4 Marks

5. a) Explain the various parts of a Radial drilling machine with sketch.b) Explain the Deephole drilling machine with sketch.

6 Marks5 Marks

6. a) Explain the column and knee type milling machine with a neat sketch.

b) Explain any four milling operations with sketch.

7 Marks

4 Marks

7. a) Explain the external centreless grinding process with sketch.b) How the grinding wheel is specified? Explain.

4 Marks7 Marks

8. a) What is Honing? Explain the vertical honing machine with sketch.b) What is Broaching? Explain the Horizontal broaching machine with sketch.

6 Marks5 Marks

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