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Types of Grinding Operation

If the longit...

Question

If the longitudinal feed in centreless grinding is expressed by $V_{t} = π D N s i n α, D$ stands for

A

Diameter of blank

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B

Diameter of finished workpiece

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C

Diameter of control wheel

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D

Diameter of grinding wheel

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Solution

The correct option is C Diameter of control wheel
Diameter of control wheel

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Q. The tool life equation for HSS tool is

V T^{0.14} f^{0.7} d^{0.4} = Constant .

The tool life (T) of 30 min is obtained using the following cutting conditions: V = 45 m/min, feed = 0.35mm, d= 2.0 mm. If feed (f) and depth of cut (d) are decreased individually by 25% and speed (V) is increased by 25%, the tool life (in min) will be:

Q. A specimen is being grinded on a surface grinder with grinding wheel speed of 1600 m/min, and workpiece speed of 25 mm/min, grinding wheel diameter of 200 mm, grinding depth of cut of 0.025 mm. Take transverse feed of workpiece = 4.4 mm/pass and specific cutting energy =

2200 J / m m^{3}

. Assume that pitch of grits at periphery of grinding wheel is 12 mm, the factor for negative rake angle of abrasive grains as 5. Mean grinding power in above operation will be___kW

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Q. Abrasive material used in grinding wheel selected for grinding ferrous alloys is

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