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.

so  RPM(1)=      
, P, ^, K- v, E6 w* F    RPM(2)=
) B. k) y) H" ]( `9 G; K    RPM(3)=
    RPM(4)=
8 O) C* D& {6 z7 P  l( x( t
谢谢指教。