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.
9 \, M0 L' p7 J3 m& A0 v) E* ZNOTE:  CS=1000 ft/min for carbide insert used.
8 |0 J1 N; T$ U0 ?$ e* g( s, @9 a
so  RPM(1)=      
    RPM(2)=
    RPM(3)=
! V, `8 D2 ?* `- N    RPM(4)=
; ?. \+ Z0 T8 V" t4 v  Z! n
4 @7 v: P$ g6 {; Q9 f% Z* |& X. K% `谢谢指教。