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., a& b/ i2 H* W8 H! g6 |
Note: CS=80. T+ c1 S% P/ U+ i
- j9 c' l" P0 t* r
RPM 1/8=7 Z7 p1 E0 g, c
RPM 3/4= + k! N1 Z$ I N+ @: h " V5 |$ m' Q) ~, MThanks a lot.
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发表于 2007-11-24 20:29
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