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.7 R* S) V* \0 w& C
Note: CS=80- g a% Q$ Q# U5 f' h/ f& R
) k3 A6 c R9 \6 O7 nRPM 1/8= & D9 B, S) [! L/ f3 M& rRPM 3/4= ) G3 H5 J4 Z: u: u2 i7 ? / {; ]+ A+ O, u! pThanks a lot.
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发表于 2007-11-24 20:29
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