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.
) c$ V# J/ ~" G8 B) k
so  RPM(1)=      
$ i0 |% O6 L6 A: R. d    RPM(2)=
    RPM(3)=
3 O! A6 L: X: m    RPM(4)=
- e; i0 n8 v) j) P+ }/ x
谢谢指教。