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)=      
    RPM(2)=
0 b- Z9 f& \, M/ J# K    RPM(3)=
    RPM(4)=
5 x  |5 g* ~- z) d- D: J
8 H# n8 m3 c1 A: o; ~' e2 E4 R谢谢指教。