MadModder
The Shop => Tools => Topic started by: Stilldrillin on August 06, 2009, 12:32:12 PM
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Anyone else having the same problem as me, with their 7 - 6mm ER32 collet?
3 times now, this 1/4" shanked endmill has gradually worked it`s way out of the collet, to where I don`t want it to be........ :bang:
(http://i110.photobucket.com/albums/n95/Dayjo/p8050009.jpg)
The only way to keep it in place is to really heave on the C spanner, until the pips squeak. Not my idea of engineering! :scratch:
All other cutter/ collet combinations seem to be ok...... ::)
David D
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Can't say I've had that problem with any ER collets David
Does this partic collet seem on the large side to begin with, ie does it need a lot of tightening to clamp it up?
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I use a ballraced nose nut and it allows a lot more clamp up pressure.
What I would try with yours is to give the nut a good clean out, and put a dab of slideway oil into the groove that the collet locks into. You just might have a little too much friction to give a good clamp pressure.
John
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Hmmm,
Thanks Chaps...... I wonder if the collet is a little oversize? It`s really crushed deep into the taper. :scratch:
I`ll turn up a 7mm plug gauge. :thumbup:
Never have lubed collet contact areas before, due to swarf sticking. But I`ve often used anti seize compound on the nut threads.
Will give it a go. :thumbup:
David D
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You shouldn't have any trouble with the lube David, even the slightest film is better than nothing.
Have you measured the cutter shank BTW? It only needs a tiny taper and it would cause problems.
You have to suspect everything in this game.
John
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You shouldn't have any trouble with the lube David, even the slightest film is better than nothing.
Have you measured the cutter shank BTW? It only needs a tiny taper and it would cause problems.
You have to suspect everything in this game.
John
Ah!
Now that`s a thought, John...... :scratch:
Thank you!
David D