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.

# y; W( @; [0 T0 v5 |. kso  RPM(1)=      
    RPM(2)=
# O$ Y3 C- `# J5 o    RPM(3)=
, }+ l+ A, ~% L% }3 i    RPM(4)=
+ ~. O$ {8 Q* p/ @" f
谢谢指教。