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Gallery, Projects and General => The Design Shop => Topic started by: Swarfing on February 08, 2011, 04:50:23 PM

Title: Nuts o Nuts
Post by: Swarfing on February 08, 2011, 04:50:23 PM: 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
Title: Re: Nuts o Nuts
Post by: j45on on February 08, 2011, 05:49:23 PM: That might come in handy soon :thumbup:
Thanks for sharing.
Title: Re: Nuts o Nuts
Post by: Brass_Machine on February 08, 2011, 11:55:46 PM: This is perfect timing for me...

Many thanks
Eric
Title: Re: Nuts o Nuts
Post by: MikeA on February 09, 2011, 08:44:27 AM: 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
Title: Re: Nuts o Nuts
Post by: Swarfing on February 09, 2011, 01:01:15 PM: 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.
Title: Re: Nuts o Nuts
Post by: Brass_Machine on February 09, 2011, 01:40:57 PM: Mike,

Do you have any pictures of the nut you made?

Eric
Title: Re: Nuts o Nuts
Post by: Jasonb on February 09, 2011, 01:52:41 PM: 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
Title: Re: Nuts o Nuts
Post by: Swarfing on February 09, 2011, 04:12:50 PM: Sorry Eric i don't and it is fitted to the machine.
Title: Re: Nuts o Nuts
Post by: Blade on February 10, 2011, 03:16:53 PM: Thanks for the link. That could be an easy fix for a lot of tools. I wonder how much pressure it can take?