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.
* b# B7 ]. }3 {5 k1 y, c/ jNOTE:  CS=1000 ft/min for carbide insert used.

* F6 ~! ?8 C. T# Y4 Rso  RPM(1)=      
6 s) S! j  h4 j7 }  X6 m    RPM(2)=
9 d6 }. g8 {6 @. i' G* O5 n) q# m    RPM(3)=
2 ?! q' T! K& A( `    RPM(4)=
# k+ `  I/ w% [) t3 M! R
$ h1 b( F" l; C0 u: m谢谢指教。