Question

What is the spindle speed (rpm) required to finish-turn 2.5 inches diameter aluminum alloy? A cutting speed of 1000 fpm is the recommended speed for finish-turning the material.

Answer 1

Relation between cutting speed and RPM is given below:-

where,

V= cutting speed in IPM (inch per minute)

D= diameter of shaft in inches

N= Shaft speed in revolutions per minute. (RPM).

V= 1000 fpm= 12000 ipm(inches per minute)

D= 2.5 inches,

So

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