CNC题目,又再请教。

27149

A 1/8 inch pilot hole followed by a 3/4 inch dia hole to be drilled in end of a 3.875 inch dia shaft.Calculate the RPM of each drill.
8 p7 z2 j( l$ |1 A  d$ @& I' V( L5 U. ANote: CS=80
9 C& y% E$ C+ c! I2 O' m
RPM 1/8=
+ U$ \# [9 l8 J3 i. [5 pRPM 3/4=

Thanks a lot.

27149

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