On Friday 03 February 2017 17:01:57 Todd Zuercher wrote: > Does anyone here know if it is possible or practical to salvage a tool > holder that the threads have gotten messed up on? We have a Techniks > HSK63F tool holder that some how got buggered up to the point I > couldn't hardly get the nut off. The 1st 3 threads on the nut are > galled up pretty bad. The things cost about $350, so I thought it > might be worth asking. Unfortunately we are a wood working shop so I > don't have any metal working machines, so I'll be stuck with sending > this out to get done (if there is anything to be done.) Here is what > it looks like. > https://s28.postimg.org/e4ip0y57x/0203171628.jpg > Thats a bear Todd. But I can't see the threads in the nut all that well. I get the impression the external threads on the tool holder are displaced/stretched toward the right, 1/4 of the thread maybe, or am I seeing things? I would also want to comment that at its size, 90 lb/ft is going to stress it eventually. Like cracking concrete floors, the question isn't if, but when.
> Next question, Any guesses why it would have gone bad? We always > tighten the nuts at a workbench with a torque wrench, to 90ft/lbs, so > I don't think it was ever over torqued. I might want to put some never-seize on it, and run the nut on a little farther with no tool in it to see if the nut can iron it back into shape. But if I'm seeing what I think I'm seeing, you might have to reach for the card. What type of torque wrench? The bending beam type can hold its accuracy for a century or 2, as long as the root of the beam is still solidly mounted in the socket driver hub, all you have to do is bend the needle back to zero if somebody mucks it up. The clicker/breakaway types, even if they cost 5x the bending beam version, and impress the frogs because they scream both precision and money, ought to be checked yearly, or more frequently. I've seen them off far enough that it wasn't the wrench clicking, but $3 each con rod bolts as he was torqueing them up. Turned out it wasn't breaking when set for 65 lb/ft, until the beam type said 107 lb/ft. Expensive lesson for that mechanic because an engine he had just done came back on a tow hook, pan wasn't big enough for all the parts. He had to eat it of course, starting with a clean block. 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
