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.
8 C, c4 v5 p, l0 G' @6 h( m( I3 W/ H
0 e8 I. y1 B& z4 w1 i& D& Bso  RPM(1)=      
    RPM(2)=
6 U) [1 P+ Z' e! X  X    RPM(3)=
7 n2 i4 }/ {- g1 k6 z1 x1 K    RPM(4)=

( F$ k2 [- c) f! {3 N( g6 Y谢谢指教。