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.
5 R6 Q$ R6 `- e$ Z: o; LNOTE:  CS=1000 ft/min for carbide insert used.

0 C8 X# g  H# I) s1 nso  RPM(1)=      
& v! a3 _7 `7 Z2 {: Z    RPM(2)=
    RPM(3)=
; x' c; D% A# u; n5 z( Z9 P    RPM(4)=

, [& m( E: s* e2 E谢谢指教。