Nuts o Nuts

[Swarfing]

Thought i would drop this in as i thought was a good idea even though not new.

http://bbs.homeshopmachinist.net/showthread.php?t=43645

[j45on]

That might come in handy soon 
Thanks for sharing.

[Brass_Machine]

This is perfect timing for me...

Many thanks
Eric

[MikeA]

Hello all,

I'd just like to add my $0.02 on this method - just recently had cause to use it as the Z axis on my Maximat V10P milling head stripped out the unusual thread on the nut  - just over 0.55" X 16 TPI (evidently a unique acme used by Emco Maier). With replacements non-existent, it was either come up with a way to replace it entirely, and in all probability with a 5/8"X8 Acme, or make a new nut.

In desperation I tried the acetal method and so far it is working perfectly, in many ways, better than the original, but worn, nut. I highly recommend this method if one cannot get or make a replacement nut.

Best,
Mike

[Swarfing]

I do use delrin/ acetol nuts on my CNC router but have always cut the threads with a home made tap. this has always been satisfactory but i must admit this method is a better approach to it. The only issue as to have a sacrificial piece of the screw, in the long term though to make a batch up is a lot cheaper.

[Brass_Machine]

Mike,

Do you have any pictures of the nut you made?

Eric

[Jasonb]

Mike it was probably a 14mm leadscrew and may well have been the metric 30degree trapizoidal form rather than 29 degree acme. I think thats what my old Ecomat 8.6 used. They would have used the same 14mm dia but a metric pitch on the metric machines.

J

[Swarfing]

Sorry Eric i don't and it is fitted to the machine.

[Blade]

Thanks for the link. That could be an easy fix for a lot of tools. I wonder how much pressure it can take?