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you'd loose the thickness of the flange. The guy i got the set off for my 260 can't get the same nuts anymore, and even those were remachined to fit the threaded mounts.
I've just helped someone put a 14 x 5mm ground screw on a 240 lathe x axis and it worked well.
Hi Ricardoco,Quote:
Originally Posted by Ricardoco
I found a company that makes 14mm ballscrew with a threaded nut but these were only rolled ballscrews not ground. But the original ballscrews on the VMC260 are rolled, so....
http://www.mooreinternational.co.uk/...6/FGI14X4.html
I keep my existing ballscrew for now, I can not detect much backlash so far, so should be OK untill I get enough money aaside to get some new ones...
An other option I found is a guy specialised in fixing damaged ballscrew. May worth a try?
http://cgi.ebay.co.uk/ws/eBayISAPI.d...:X:RTQ:GB:1123
RNR
wrong thread on the nut
Hummm.... I wonder, It should not be too dificult to make a new nut holder (with the right thread)?Quote:
Originally Posted by i2i
Looks like a fairly simple shape and made of aluminium...
RNR
is the original steel.??
This is probably a bit far fetched, but I wonder if it would be possible to machine a thread on one of the cheap ballnuts from china? The grade of steel is clearly hard, but it does file so it may be possible to machine.
that's the way i went for my 260.
Nope... It is a kind of aluminium alloy...Quote:
Originally Posted by i2i
Hi Jonathan,Quote:
Originally Posted by Jonathan
You would do that on a Lathe I guess. So would you first remove all the balls ?
RNR
Thanks for the link RNR, mine are steel and i would have opted for the repair but to be fair it really was fooked, i couldnt understand what was happening untill i had stripped everything down and by that time i had moved the Head up and down at least 20 times just to get it to go to the top so i could get the thing off... it was toast... i will replace all three with the threaded type like for like as i just dont have the time to mess around doing the other type with the machining..... I will let you know how i got on when its done but dont hold your breath as im building a gantry machine at the moment so it could be a while...Quote:
Originally Posted by rnr107
Rick
Hi Laurent, I'm rebuilding a 260VMC, the electronics were replaced by Mach 3, but has been as its my first rebuild any other photos you have of it 'naked' would be of great help. Information on these things is as rare as rabbit horns and any that would help keep me from making mistakes would be most welcomed.
PS I have just rebuilt all three ballscrews, Scott Sayers from GMS Ball Ltd ([email protected], 01903 264601) was really helpfiul and extremely knowledgable.