CamBam
News:
 
*
Welcome, Guest. Please login or register.
Did you miss your activation email?
October 15, 2018, 22:27:41 pm


Login with username, password and session length


Pages: [1]
  Print  
Author Topic: Ball Nut Holder - Manual Machining  (Read 474 times)
Bob La Londe
CNC Jedi
*****
Offline Offline

Posts: 3365


^ 8.5 pounds on my own hand poured bait.


View Profile WWW
« on: January 26, 2018, 00:43:21 am »

Ball Nut Holder - I am sure somebody can tell me why this is a stupid idea, but I needed to get this ball nut off the ball screw without dumping the balls all over the floor. I don't know if the screw is salvageable or not. Its got a bend in it somewhere. If its just in the machining in the end I might be able to turn it down and machine some bushings. If the screw is bent in the main span its done. I might be able to straighten that, but it wouldn't be very accurate anymore. Normally guys screw the nut off onto a piece of cardboard tune, but I have bad luck with that. This hand made stub of aluminum "ballscrew" mates up with the end of the ballscrew I need to check, and I was able to just screw the nut off onto the stub. I had to hand grind a radius tool out of HSS in order to thread the holder. It took me a couple hours, but it worked out perfectly. Of course that time is wasted except for the learning experience if I can't save the screw.

Anyway, now I can roll the screw on my granite surface plate and determine where its bent.


* Ball Nut Holder.jpg (217.81 KB, 756x1008 - viewed 82 times.)
Logged

Getting started on CNC?  In or passing through my area?
If I have the time I'll be glad to show you a little in my shop. 

Some Stuff I Make with CamBam
http://www.CNCMOLDS.com
Bubba
CNC Jedi
*****
Offline Offline

Posts: 2493



View Profile
« Reply #1 on: January 26, 2018, 00:47:15 am »

Bob,
If it works is smart idea Grin, and it looks like you got it. Personally, I'm successful using tubes. So what ever get the job done..
« Last Edit: January 26, 2018, 00:49:07 am by Bubba » Logged

My 2ยข
dave benson
CNC Jedi
*****
Offline Offline

Posts: 973


View Profile
« Reply #2 on: January 26, 2018, 00:57:41 am »

Yep good idea, I've done this before by using a piece of plastic re-enforced Air line.
Dave
Logged
Bob La Londe
CNC Jedi
*****
Offline Offline

Posts: 3365


^ 8.5 pounds on my own hand poured bait.


View Profile WWW
« Reply #3 on: January 26, 2018, 00:58:39 am »

After I finished this one I thought I might (at some time time in the future) make a set for the other ballscrew sizes I have on my machines here in the shop.  1605 for sure.  Maybe 1204.  I think having them would make servicing and building machines easier.  Especially when a screw arrives with a double not on the screw in the wrong direction.  

I would note I would have had to make a "tube" to slide the screw onto anyway.  Its about 1.16 thread ID.  I machined the holder 1.15 so it would have some slop in the balls to make the transition more easily.  

Logged

Getting started on CNC?  In or passing through my area?
If I have the time I'll be glad to show you a little in my shop. 

Some Stuff I Make with CamBam
http://www.CNCMOLDS.com
Pages: [1]
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.21 | SMF © 2015, Simple Machines

Valid XHTML 1.0! Valid CSS! Dilber MC Theme by HarzeM
Page created in 0.097 seconds with 19 queries.

Copyright © 2018 HexRay Ltd. | Sitemap