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.
# E/ U- o+ g0 R( T7 ?+ s
) [9 g  P. v& h% M, v- d& L  Z5 _; t; qso  RPM(1)=      
- E+ D' a0 u, b8 ?    RPM(2)=
    RPM(3)=
    RPM(4)=
- U* @+ D3 m$ Z1 P4 ~
1 {. J! E( u  {  V# P谢谢指教。