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.

/ V! b2 Q% m+ u) c. M5 j1 ]" o2 N1 qso  RPM(1)=      
    RPM(2)=
7 t1 c  N1 E" K4 ~4 _% D    RPM(3)=
% @8 v: `. K+ h* o    RPM(4)=
  r# \% c6 [1 w
3 K+ T; A7 z( B2 u* L  `' H  ^谢谢指教。