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.

9 F, J: }0 Z( Y* l7 V# [6 R! K; Q! bso  RPM(1)=      
    RPM(2)=
    RPM(3)=
" J$ B% P  g0 U0 f# V    RPM(4)=
. T& g9 B$ E/ ?; b& k) l
谢谢指教。