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.
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7 @  O' [( O" _# S6 H* vRPM 1/8=
+ [, {& Z! C+ d6 C' SRPM 3/4=
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- i4 W; G& i5 V$ `# G! MThanks a lot.

27149

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