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.

, d8 m% V1 U4 `* Z* ?( e+ eso  RPM(1)=      
5 h" K5 L" m( E$ z    RPM(2)=
    RPM(3)=
9 A+ Y8 T, k+ t; j    RPM(4)=

谢谢指教。