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.
) d/ R! E5 F0 E. L& C/ L2 DNOTE:  CS=1000 ft/min for carbide insert used.
1 p& \1 ]4 p3 b
. r. \3 \5 L3 u3 p! D: gso  RPM(1)=      
    RPM(2)=
    RPM(3)=
    RPM(4)=

  ]0 ^1 E. C" s3 g& l谢谢指教。