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.
* h7 \! D  Q: b3 ^3 cNOTE:  CS=1000 ft/min for carbide insert used.

so  RPM(1)=      
    RPM(2)=
    RPM(3)=
3 S# ]# h' I1 \4 H4 ~2 ]2 o6 [    RPM(4)=
! r! z" ]- x; v; l! x, E  a+ F* p/ e
谢谢指教。