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.
4 S% L3 Z5 v- R- R; X! TNOTE:  CS=1000 ft/min for carbide insert used.

: b: M8 V) w" x6 M1 s. ]so  RPM(1)=      
9 V# t* l) T$ O0 ~    RPM(2)=
) G( c; U2 [2 a# ~/ ]! i, c    RPM(3)=
* g$ ]  C4 M: Z1 D9 @7 I    RPM(4)=

7 z  k; K1 R& F谢谢指教。