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. . W% a4 r2 U5 K9 U' E5 \$ G, |Note: CS=80 ( M0 O: C! j+ y! i0 q+ R' ]$ c7 V. X$ }2 w* w- h
RPM 1/8= 5 s# o X' Y. r1 a5 i" v* R: ORPM 3/4= 7 D/ z' W/ K* A5 u4 C" b- R: W, C2 E" @: r" [, L
Thanks a lot.
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发表于 2007-11-24 20:29
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