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.
" v5 P" B% K4 J. N0 J1 K8 F3 G3 @$ qNOTE:  CS=1000 ft/min for carbide insert used.

so  RPM(1)=      
    RPM(2)=
" t" U" E1 }7 D$ B  F    RPM(3)=
    RPM(4)=

" M. G* g+ f9 E! V+ _) h谢谢指教。