STUPIDSID
Solve any one question from Q.1(a,b) &Q.2(a,b)
1(a)
A hole of 25mm diameter and 70mm depth is to be drilled. The suggested feed 1.3mm/rve. 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
1(b)
Draw a neat sketch of twist drill with its nomenclature and explain various terminologies of twist drill.
6 M
2(a)
Describe the Tool and Cutter grinder with neat sketch.
6 M
2(b)
Write short notes on Bunishing Process.
6 M
Solve any one question from Q.3(a,b) &Q.4(a,b)
3(a)
Explain chip breakers with its function?
4 M
3(b)
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 = 0.3 mm, feed = 0.2 mm/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 = 0.3 mm, feed = 0.2 mm/rev. Calculate:
i) Shear angle
ii) Coefficient of friction ,
iii) Chip flow velocity
iv) Friction Angle
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
Solve any one question from Q.5(a,b,c) &Q.6(a,b)
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
Solve any one question from Q.7(a,b,c) & Q.8(a,b,c)
7(a)
Explain DNC machines with neat sketch. State its advantages and limitaitions.
6 M
7(b)
Explain with neat sketch NC motion control system.
5 M
7(c)
Explain the following codes
G02, G91, G98, M03, M02
G02, G91, G98, M03, M02
5 M
8(a)
Explain machining center with neat sketch. State its advantages, disadvantages and applications.
6 M
8(b)
Differentiate between open and close loop system with neat sketch.
6 M
8(c)
Explain the following codes
G03, M00, G91, M08
G03, M00, G91, M08
4 M
Solve any one question from Q.9(a,b,c) & Q.10(a,b,c)
9(a)
What is 3-2-1 locations 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 ϕ9mm Two holes in the component shown in figure.
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!mage
8 M
10(a)
List various types of locating devices used in jig 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 milling 74mm×20mm face
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!mage
8 M
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