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., T% J; E2 K6 {0 `* T
Note: CS=80. I) `. ?& M2 f: u) I7 y
# B; Y V# H: H( u$ V6 I0 M
RPM 1/8= 6 b2 p3 y) M/ O% ZRPM 3/4= 7 Y1 }9 v i+ Z" o% e$ V7 C- u. J/ @* j/ z) d0 D
Thanks a lot.
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发表于 2007-11-24 20:29
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