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.
0 F/ i  _, b; N& @" x7 ?NOTE:  CS=1000 ft/min for carbide insert used.

so  RPM(1)=      
1 y7 T2 e6 _* E' x  K( N8 a    RPM(2)=
0 G1 Z& \3 p6 F    RPM(3)=
- a* y* p3 r+ P# O8 a! B    RPM(4)=

  u1 C( q' o7 J, ^谢谢指教。