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.
- S8 B1 Q8 G! }5 [+ ]) C8 mNOTE:  CS=1000 ft/min for carbide insert used.

9 K6 s+ Z  G9 _6 E" A9 `2 I3 aso  RPM(1)=      
    RPM(2)=
' q4 ~' r* c1 o; J/ a# [0 `% X    RPM(3)=
    RPM(4)=

谢谢指教。