Ok guys Here's some more info on my problem. I am very new to cnc so bare with me. For example: Let say I want to cut a 10mm OD. The first part will be spot on. The second will be 15 microns under and the third will be 15 microns over and so it fluctuates with no definate repeatablility. I have checked the x axis and my backlash is only 5 microns so the mechanical side is ruled out.
Here are some perameters from the .ini file Dirsetup is 2500 Dirhold is 2500 Steplen 5000 Stepspace 5000 Stepscale -322 on a 2.5mm ballscrew. Using a leadshine D808 drive. I have been battling with this for 8 weeks with no success. Any help from you will be appreciated. Awaiting your responce. Best regards. Johann Beukes On 28 Aug 2017 14:47, "Gene Heskett" <ghesk...@shentel.net> wrote: On Monday 28 August 2017 07:52:14 jeremy youngs wrote: > My 860 drives gave me a very hard time early on.only much sifting > through the Chenglish did I realize the drive steps on the rise and > fall. Requiring 1/2 the steps calculated. I have not found that to be the case here with a 'DM'860. Odd indeed. The only comment I'd make is that the microstep current mapping is somewhat less than ideal. It might be enlightening to put a scope probe on the supply lines? Perhaps its ringing with the changes in current draw? Just a SWAG mind you. > > On Aug 27, 2017 11:12 PM, "Johann Beukes" <beukes1...@gmail.com> wrote: > > Hi guys > > I am struggeling alot with my lathe X axis. The machine does not > > hold size at all. I am using The Leadshine ESM-22430 motor and the > > DS808 drive. The Dirsetup is set at 2500, Dirhold 2500, Steplen > > 5000, Stepspace 5000 and stepscale at -322. The ballscrew has a > > 2.5mm pitch and the steps per rev are set at 800. > > Can anybody please give me some advice? > > Thanks > > ------------------------------------------------------------ > > ------------------ > > Check out the vibrant tech community on one of the world's most > > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > > _______________________________________________ > > Emc-users mailing list > > Emc-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/emc-users > > ---------------------------------------------------------------------- >-------- Check out the vibrant tech community on one of the world's > most engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > 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) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------ ------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
