Code No: 09A50304

JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY, HYDERABAD

B. Tech III Year I Semester Examinations, May/June – 2013

Machine Tools

(Mechanical Engineering)

Time: 3 hours Max. Marks: 75

Answer any five questions

All questions carry equal marks

- - -

1.a) Explain about various types of chip breakers with neat diagrams.

b) Draw the Merchant’s circle diagram and derive the expression for showing

relationship between cutting force and thrust force. [15]

2.a) State the various types of taper turning methods. Explain any two in detail with

neat sketches.

b) Distinguish between turret lathe and Capstan lathe. [15]

3.a) With a neat sketch, explain construction and working of a slotter.

b) A C.I plate measuring 300mm × 100mm × 40mm is to be rough shaped along its

wider face. Calculate the machining time. Take approach=25mm, over

travel=25mm, cutting speed=12m/min, return speed =20m/min, allowance on

either side of plate width=5mm and feed per cycle=1mm. [15]

4.a) State the different types of drills used. Explain their functions.

b) What is a reamer? State the various types of reamers and explain their features

briefly. [15]

5.a) Distinguish between horizontal, vertical and universal milling machines on some

salient features.

b) Give the tool geometry of milling cutters with neat sketches. [15]

6.a) Explain the construction and working of surface grinding machine with a neat

sketch.

b) State and explain the various factors to be considered for the selection of type of

abrasive. [15]

7.a) With a neat sketch explain the construction and working of a surface broaching

machine.

b) Explain how the length and machining timing of a broach are determined. [15]

8.a) State and explain the principles of Jigs and fixtures.

b) Explain the construction and working of bridge clamp with a neat sketch. [15]

********

R09

travel=25mm, cutting speed=12m/min, return speed =20m/min, allowance on

either side of plate width=5mm and f

4.a) State the different types of drills used. Explain their functions.

) What is a reamer? State the variou

briefly. [15]

5.a) Distinguish between horizontal, vertical

b) Give the tool geometry of milling cutters with neat sketches. [15]

turret lathe and Capstan la

3.a) With a neat sketch, explain construction and worki

) A C.I plate measuring 300mm × 100mm × 40mm is to be rough shaped along its

wider face. Calculate the machining time. Take approach=25mm, over

travel=25mm, cutting speed=12m/min, return speed =20m/min, allowance on

either side of plate width=5mm and feed per cycle=1mm. [15]either side of plate width=5mm and feither side of plate width=5mm and f

travel=25mm, cutting speed=12m/min, return speed =20m/min, allowance on

either side of plate width=5mm and f

4.a) State the different types of drills used. Explain their functions.

) What is a reamer? State the various types of reamers and explain their features

briefly. [15]

5.a) Distinguish between horizontal, vertical

b) Give the tool geometry of milling cutters with neat sketches. [15]

turret lathe and Capstan la

3.a) With a neat sketch, explain construction and worki

) A C.I plate measuring 300mm × 100mm × 40mm is to be rough shaped along its

wider face. Calculate the machining time. Take approach=25mm, over

travel=25mm, cutting speed=12m/min, return speed =20m/min, allowance on

either side of plate width=5mm and feed per cycle=1mm. [15]

4.a) State the different types of dr

) What is a reamer? State the variou

briefly. [15]

5.a) Distinguish between horizontal, vertical

00mm × 40mm is to be rough shaped along its

wider face. Calculate the machining time. Take approach=25mm, over

travel=25mm, cutting speed=12m/min, return speed =20m/min, allowance on

eed per cycle=1mm. [15]

abrasive. [15]abrasive. [15]abrasive. [15]abrasive. [15]abrasive. [15]abrasive. [15]abrasive. [15]abrasive. [15]

sketch.

salient features.

s types of reamers and explain their features) What is a reamer? State the various types of reamers and explain their features) What is a reamer? State the variou) What is a reamer? State the variou) What is a reamer? State the variou b) What is a reamer? State the variou) What is a reamer? State the variou

travel=25mm, cutting speed=12m/min, return speed =20m/min, allowance ontravel=25mm, cutting speed=12m/min, return speed =20m/min, allowance ontravel=25mm, cutting speed=12m/min, return speed =20m/min, allowance ontravel=25mm, cutting speed=12m/min, return speed =20m/min, allowance ontravel=25mm, cutting speed=12m/min, return speed =20m/min, allowance ontravel=25mm, cutting speed=12m/min, return speed =20m/min, allowance ontravel=25mm, cutting speed=12m/min, return speed =20m/min, allowance on

00mm × 40mm is to be rough shaped along its00mm × 40mm is to be rough shaped along its00mm × 40mm is to be rough shaped along its) A C.I plate measuring 300mm × 1) A C.I plate measuring 300mm × 1) A C.I plate measuring 300mm × 1 b) A C.I plate measuring 300mm × 1) A C.I plate measuring 300mm × 1

neat sketches.

m and derive the expression for showingm and derive the expression for showingm and derive the expression for showingm and derive the expression for showingb) Draw the Merchant’s circle diagram and derive the expression for showingb) Draw the Merchant’s circle diagrab) Draw the Merchant’s circle diagrab) Draw the Merchant’s circle diagrab) Draw the Merchant’s circle diagra

All questions carry equal marksAll questions carry equal marksAll questions carry equal marks

Time: 3 hours Max. Marks: 75 Time: 3 hours Max. Marks: 75 Time: 3 hours Max. Marks: 75 Time: 3 hours Max. Marks: 75 Time: 3 hours Max. Marks: 75 Time: 3 hours Max. Marks: 75 Time: 3 hours Max. Marks: 75 Time: 3 hours Max. Marks: 75 Time: 3 hours Max. Marks: 75

B. Tech III Year I Semester Examinations, May/June – 2013 B. Tech III Year I Semester Examinations, May/June – 2013 B. Tech III Year I Semester Examinations, May/June – 2013 B. Tech III Year I Semester Examinations, May/June – 2013

Machine Tools

B. Tech III Year I Semester Examinations, May/June – 2013 B. Tech III Year I Semester Examinations, May/June – 2013 B. Tech III Year I Semester Examinations, May/June – 2013

CAL UNIVERSITY, HYDERABADCAL UNIVERSITY, HYDERABADCAL UNIVERSITY, HYDERABADCAL UNIVERSITY, HYDERABADJAWAHARLAL NEHRU TECHNOLOGIJAWAHARLAL NEHRU TECHNOLOGIJAWAHARLAL NEHRU TECHNOLOGIJAWAHARLAL NEHRU TECHNOLOGIJAWAHARLAL NEHRU TECHNOLOGI

R09

salient features.

www.jntuking.com

www.jntuking.com

www.jntuk

ing.co

m