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.
  z' W6 b+ t: M; r: }1 u, p0 B; DNOTE:  CS=1000 ft/min for carbide insert used.
0 ]& ^  |/ C. r" a
so  RPM(1)=      
* l, Y5 a& P. X+ i) J, ]6 j' k    RPM(2)=
    RPM(3)=
    RPM(4)=
3 Z. _- d/ H) U) L6 N8 F8 P
9 H8 Z' D7 \9 P谢谢指教。