Greetings all; I am having a vibration when cutting a harder steel, (old worn mine shafting stuff, rusty surface too) seems to be fairly fixed in frequency to somewhere in the octave below middle C.
I have no "shake" in the rear spindle bushing and it runs about 10F higher temp than the front bearing in terms of temperature rise from 10 minutes at 1600 revs, but reading on the rings I made to lock the spindle and chuck together for prevention of a chuck unscrew on a fast spindle reversal, I can see under a thou of movement when a 2 foot piece of pipe is chucked up and used for a lever with 50 or so lbs of lift on the end of the pipe. I do not feel this vibration at the toolpost but on the front bearing cap with a much weaker feel on the rear bearing cap. Is this just barely measurable movement the likely suspect? Thanks everybody. Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
