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.

0 M2 o7 r- @8 V/ Bso  RPM(1)=      
    RPM(2)=
    RPM(3)=
( ]0 }7 \! i6 H6 U) K: {" [2 W    RPM(4)=
" b, K; Z: t! _% l; Y
谢谢指教。