Write short note on following:-

1 (a)
Lathe tool dynamometer.

5 M

1 (b)
Types of bushes.

5 M

1 (c)
Force analysis & power calculation in drilling.

5 M

1 (d)
Types of chips.

5 M

2 (a)
Design and sketch a suitable die to produce 10,000 pieces of M.S. work piece of diameter 35mm and 2mm thick. The material is having shear strength of 400N/mm

^{2}. Assume suitable data if necessary. Write the necessary design steps.
10 M

2 (b)
What factors should be considered for selecting appropriate press for a given job? Discuss the method of reducing cutting forces in press tool with neat steps.

10 M

3 (a)
Prove that the relationship

2θ + β + γ = π/2

holds good in orthogonal cutting, where θ= shear angle, β= friction angle, γ= rake angle. Also state your assumptions.

2θ + β + γ = π/2

holds good in orthogonal cutting, where θ= shear angle, β= friction angle, γ= rake angle. Also state your assumptions.

10 M

3 (b)
During orthogonal machining with rake angle 10

^{0}and uncut thickness 0.125mm, the values of F_{t}and F_{c}are found to be 217N and 517N respectively. Average chip thickness=0.43mm, width of chip=2mm, cutting speed=120m/min. Compute: chip thickness ratio, shear angle, resultant force, shear force, normal compressive force, frictional force, merchant?s constant, cutting power consumption, shearing power consumption and frictional power consumption
10 M

4 (a)
Discuss the different cutting tool material with their advantages and limitations.

10 M

4 (b)
Explain planetary and cluster rolling mills with neat sketches.

5 M

4 (c)
Write short note on "Mechanism of Rolling Process"

5 M

5 (a)
Explain the various steps involved in design of circular pull type broach. Draw the neat sketches.

10 M

5 (b)
Compare jigs and fixture and explain locating and clamping elements used in jigs and fixtures.

10 M

6 (a)
Explain thread rolling and rolling defects.

7 M

6 (b)
Explain the design principles for turning fixtures.

5 M

6 (c)
Compare compound and progressive die with neat sketches.

8 M

7 (a)
A 200 mm long and 30 Mm bar is being turned on lathe with a feed of 0.25 mm/rev. The operating cost is 5 paise/min while tool cost is Rs.1 per cutting edge. Tool changing time is 1 min. for each cutting edge. Compare the machining cost per component while operating under most economical condition for following materials:-

Materials | Tool Life Equation |

X | VT^{0.1} = 67 |

Y | VT^{0.1} = 90 |

10 M

7 (b)
Design and draw circular form tool for forming the work piece for shape given in the figure. The bar is 60mm diameter steel bar. Assume rake & clearance angle 12° and 10° respectively. The form tool is HSS.

10 M

More question papers from Production Process 2