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.
1 R: _5 e! q" S5 kNOTE:  CS=1000 ft/min for carbide insert used.
0 k1 c4 a! T7 d7 u2 ^7 Z
. x9 c) q" P8 C4 S( f# M5 @! dso  RPM(1)=      
    RPM(2)=
    RPM(3)=
    RPM(4)=

3 w2 H* {: H! Z谢谢指教。