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 Z8 x/ z) { m4 Y; O
Note: CS=80 0 m$ w- Y$ [) H1 B * R+ E3 h5 [6 iRPM 1/8=# _4 E6 ? ]# ^
RPM 3/4= * { Q( F* m6 [ d4 C. ~5 t 2 x4 v# r5 f! i5 r: i2 kThanks a lot.
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发表于 2007-11-24 20:29
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