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.
. m4 T5 T1 l/ i. N, }2 h3 Z) {9 s
so  RPM(1)=      
: a: Q% r$ y7 m9 r% z3 W& O    RPM(2)=
    RPM(3)=
: I# J# O. Z; w3 K    RPM(4)=

2 o% w! O  P7 ]谢谢指教。