CNC题目,再请教。

27149

A 6.5 inch dia shaft is to be machined on a TURNING CTR to 4.5 inch dia in 4 equal cuts. If CONSTANT CS is selected calculate the RPM at the beginning of each cut.
NOTE:  CS=1000 ft/min for carbide insert used.
6 W, ]* h' |( n: ?: n
, U% }: d3 [; F7 O% yso  RPM(1)=      
    RPM(2)=
    RPM(3)=
0 X( c2 Z6 G% Y9 u7 K% z& E7 g    RPM(4)=
) x) u: r8 e# P
谢谢指教。