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147657

Re: Anti backlash idea

... That's the price of good, efficient CNC machines. The drag is low and backlash is nearly always much lower than leadscrews. The first design principle
Steve Blackmore
2:03 AM
#147657
 
147656

Re: Anti backlash idea

On 03/05/15 03:19, 'Rick - yahoo' rgsparber.ya@... [mach1mach2cnc] ... That is exactly what I was thinking. The Taig mills don't have the weight to hold
Lester Caine
1:57 AM
#147656
 
147655

Re: Anti backlash idea

I think closing the loop further out, and with some 'analog' is value instead of a 'digital' touching or not is going to satisfy you much better! There is room
Tobias Gogolin
12:59 AM
#147655
 
147654

Re: Anti backlash idea

Steve, Thanks for the information on ballscrews. There are very new to me. The prices I see on eBay for a 30 inch ballscrew and nut give me sticker shock. And
Rick - yahoo
7:52 PM
#147654
 
147653

Re: Motion controller Certification??

All of the motion control plugins on the page linked below are for Mach3 only. http://www.machsupport.com/software/plugins/ The only motion plugin for Mach4
morerust
7:23 PM
#147653
 
147652

Re: Anti backlash idea

Andy, I think there are two cases where backlash must be injected. If I simply reverse direction, then the software will work like it does now with backlash
Rick - yahoo
7:19 PM
#147652
 
147651

Re: Motion controller Certification??

Mach3 plugins are here: http://www.machsupport.com/software/plugins/ There are a few links here in the first paragraph for Mach4 plugins. Almost all (if not
Ger
7:15 PM
#147651
 
147650

Re: Motion controller Certification??

I cannot find on the web site what plugins work with Mach 3 or 4. Can you specify what plugins are for Mach 3 or 4.
mkt10121012
4:54 PM
#147650
 
147649

Re: Anti backlash idea

... Mechanically on a ballscrew there should be two points of contact for each ball in contact with the screw when new. The balls are slightly bigger than the
Steve Blackmore
3:50 PM
#147649
 
147648

Re: Anti backlash idea

Andy, I assume that at any given time, there is only one contact point. To the extent that the contact point moves, we get another source of error. I do hope
Yahoo gMail
7:53 AM
#147648
 
147647

Re: Anti backlash idea

I'd think that limiting contact area could be a double-edged sword, as it would accelerate wear of the screw/nut. Again, I'll be interested in how this plays
Andy Wander
7:49 AM
#147647
 
147646

Re: Anti backlash idea

Andy, I need to isolate the nut and take data on how electrical resistance varies as I reverse direction. Best case - nice clean break. Worst case would be a
Yahoo gMail
7:40 AM
#147646
 
147645

Re: Anti backlash idea

Hiya' Rick: Interesting idea! Possible issues: -the leadscrew would still male electrical contact with the nut even though the physical contact with the thread
Andy Wander
7:29 AM
#147645
 
147644

Anti backlash idea

I wonder if anyone has played with using a backlash reduction system like this? It would sense when physical contact was broken between the leadscrew and the
Yahoo gMail
7:16 AM
#147644
 
147643

Re: Who's going to The CNC Workshop?

AGreed, bnut the trip from Spain is a bit far. Im sure many others are in the same situation.. On 02/05/2015 13:49, Ron Ginger ronginger@...
Hannu Venermo
4:53 AM
#147643
 
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