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.

4 [" E/ E5 g- D% S+ R4 aso  RPM(1)=      
    RPM(2)=
( l* {& o) T( q# u* L6 O) j    RPM(3)=
' a0 |' g  D9 a( Y; B    RPM(4)=
4 s: D! J0 j( o7 L7 ]% v
谢谢指教。