STUPIDSID
1(a)
Draw a neat sketch of twist drill with its nomenclature and explain various terminologies of twist drill.
6 M
1(b)
A hole of 25 mm diameter and 70 mm depth is to bedrilled. The suggested feed 1.3 mm/rev. and cutting speed 60m/min. assuming tool approach and tool overtravel as 6mm, Calculate:
i) Spindle Speed
ii) Feed Speed
iii) Cutting Speed
i) Spindle Speed
ii) Feed Speed
iii) Cutting Speed
6 M
2( b)
Write short notes on Burnishing Process.
6 M
2(a)
Describe the Tool and Cutter grinder with neat sketch.
6 M
3(a)
In orthogonal cutting of a 60mm diameter MS bar on lathe, the following data was obtained:
Rake angle = 10°,
Cutting Speed = 100m/min,
Cutting force =200N,
Feed Force =70N,
Chip thickness =0.3mm,
feed =0.2mm/rev. Calculate:
i) Shear angle
ii) Coefficient of friction
iii) Chip flow Velocity
iv) Friction Angle
Rake angle = 10°,
Cutting Speed = 100m/min,
Cutting force =200N,
Feed Force =70N,
Chip thickness =0.3mm,
feed =0.2mm/rev. Calculate:
i) Shear angle
ii) Coefficient of friction
iii) Chip flow Velocity
iv) Friction Angle
4 M
3(b)
Explain chip breakers with its function?
4 M
4(a)
With the help of neat sketch explain the relation between shear velocity, cutting velocity and chip flow velocity.
4 M
4(b)
What is Machinability? Explain different factors affecting Machinability.
4 M
5(a)
Explain USM process with its adv, limitations and applications.
8 M
5(b)
Compare the ECM and EDM with various process parameters.
8 M
6(a)
Draw a Schematic diagram of 'Laser Beam Machining' and Explain its working principle and process parameters.
8 M
6(b)
Explain AJM process with its adv, limitations and applications.
8 M
7(a)
Explain DNC machines with neat sketch. State its advantages and limitations.
5 M
7(b)
Explain with neat sketch NC motion control system.
4 M
7(c)
Write a part program for component show in fig. Assume that spindle speed of 400rpm and feed is 0.3mm/rev.
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7 M
8(a)
Explain machining center with neat sketch. State its advantages, disadvantages and applications.
6 M
8(b)
Differeniate between open and close loop system with neat sketch.
6 M
8(c)
Explain the following code
G03
M00
G91
M08.
G03
M00
G91
M08.
4 M
9(a)
What is 3-2-1 location principle? Explain with neat sketches.
6 M
9(b)
Draw and explain diamond pin locator.
4 M
9(c)
Design and draw drilling jig for drilling the φ 10mm holes in the component show in fig.(a)
8 M
10(a)
List various types of locating devices used in jiig and fixtures. Explain any one in detail.
6 M
10(b)
Write short notes on modular fixture.
4 M
10(c)
Design and draw milling fixture for miling slot of 10 mm wide, 5 mm deep and 25 mm is length for the component shown in fig. (a)
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8 M
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