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 ~# |+ V5 r2 u% n; K. e9 jNOTE:  CS=1000 ft/min for carbide insert used.

so  RPM(1)=      
1 K5 R. o, J) [* p+ Y% s$ W% |( w    RPM(2)=
' }3 p0 `$ X9 V3 C    RPM(3)=
9 _, B$ a& r6 }/ H* K    RPM(4)=

谢谢指教。