On Sunday 13 September 2020 20:29:23 Chris Albertson wrote: > Look at Tompson in the US for small ball screws. They have three > styles of nuts. They are expensive because they are spec'd to have > micrometers of error. I was going to buy from Tompson but ordered a > Chinese 16mm screw and found that within my ability to measure the > Chinese screw was perfect. But all I have are some normal test dial > indicators. > > > Again, these stepper drivers are not going to accept command lines. > They all use point and click based software. To set a limit you just > fill in the field and click "save". > > The trick is in finding who is the manufacturer and then going to > their web site and getting the software. > And thats quite a trick. Neither leadshine (who does yet offer any 3 phase stuff on their site) nor Lichuan offers any software for download, I spent a couple hours poking around both sites today. Then I prowled around in that machines .hal file, trying to get the same functions setup for x that I did have working for Z. But combining them is nearly a total rewrite of about 25 lines of hal stuff, and I got burned out so I ran out to TSC to see if I could find a better draw screw to do the tensioning of the X drive belt. Couldn't find it in cap screw style, so got a flathead, then ran two 4mm nuts against the head to get a course adjustment, and wound up working better than before, but there's just enough of it hanging out of the bottom edge of the apron that it could catch something as it goes by. Maybe 15 thou. These motors are amazingly quiet, a normal speeds its a ghost, its moving but you can't hear a thing unless the spindle is turning. And X can now do 120 ipm. Was about 28 on the normal motor.
> On Sun, Sep 13, 2020 at 2:34 PM Gene Heskett <ghesk...@shentel.net> wrote: > > On Sunday 13 September 2020 15:18:57 andy pugh wrote: > > > On Sun, 13 Sep 2020 at 17:29, Gene Heskett <ghesk...@shentel.net> > > > > wrote: > > > > Worse yet, if that screw does get damaged, I have no clue where > > > > to source another like it. That small has never shown up on > > > > fleabay. > > > > > > https://www.automationshop.co.uk/mec > > > > No, they don't. 1 16mm, the smaller ones are all out of stock from > > this side of the pond. These nuts have flanges that would preclude > > using them in the available space. The ones I am using aren't > > threaded or flanged, so I had to make cages to fit them. They are > > 19mm in diameter plus return tubes. Looks like warmed over hell, but > > the backlash is about a thou. > > > > > Or, second-hand from Korea: https://www.ebay.com/itm/193192165382 > > > > At least they are honest, all worn out, the precise is used up. > > These were worn some but I found a bag of oversized balls ,0635 in > > diameter, .001" oversized, and re-stuffing them was a bit tedious > > but I did get it done. Took nearly all the backlash out of them. > > > > Cheers, Gene Heskett > > -- > > "There are four boxes to be used in defense of liberty: > > soap, ballot, jury, and ammo. Please use in that order." > > -Ed Howdershelt (Author) > > If we desire respect for the law, we must first make the law > > respectable. - Louis D. Brandeis > > Genes Web page <http://geneslinuxbox.net:6309/gene> > > > > > > _______________________________________________ > > Emc-users mailing list > > Emc-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/emc-users Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
