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.
7 x4 k( z  j4 x8 N- jNOTE:  CS=1000 ft/min for carbide insert used.
  V: D) f8 B% b. p; O  c+ v
; s. R1 H" _: Z  @so  RPM(1)=      
    RPM(2)=
    RPM(3)=
    RPM(4)=
+ U6 x* q2 c( n
0 d9 B" x9 Z! U, C/ M; g谢谢指教。