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.+ b$ G1 G' d; N( N- R
Note: CS=80 * [1 B0 e8 J. M5 I; g' k$ x % W, D$ y3 K3 C5 {- h; l. r' X2 wRPM 1/8= 1 |7 d5 o) z) D. P, a! ^( kRPM 3/4=( z4 k0 o n2 l1 ^, B8 n0 G+ \
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发表于 2007-11-24 20:29
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