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.
, x/ F& r! _8 N2 g% {! eNOTE:  CS=1000 ft/min for carbide insert used.
% z) a4 _5 b: Y
3 l0 O7 h1 C0 kso  RPM(1)=      
    RPM(2)=
6 L$ i( Q9 j' J6 ?8 \    RPM(3)=
    RPM(4)=
, A* d4 x2 k: i  f  p' V/ h
谢谢指教。