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. - R9 ^$ H I' D# C8 S+ KNote: CS=80 ; v% ]5 m# _& |8 d4 o3 V8 }8 l9 C5 S9 i- c
RPM 1/8= 6 k& V, q6 h( f) w9 A9 ^& @RPM 3/4=! o5 P+ o! B- e6 `6 c
$ C' z( H; F, q* S/ m7 r; q: v
Thanks a lot.
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发表于 2007-11-24 20:29
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