Hi, I am at the state of configuring our stepper driven milling machine and came across an interesting issue.
I set up all the parameters needed to drive an axis including backlash compensation. Most important values are as follows: SCALE = 1000 BACKLASH = 0.004 Then when I hook up a digital micrometer to the axis and start jogging 1 mm each time what I see is this: - running at reasonably high speeds the backlash comp works well and the maximum difference is +-0.001 microns. - however, when I switch to low speed (really low speed) the difference can grow up to +-0.010 microns. Well, this made me think I should compensate the friction on the axis too. As I searched through the EMC2 manual I did not find anything. I looked at one of our other machines' manual (with Heidenhain control unit) which does have the possibility to compensate friction so I assume the problem itself is not unknown. Does anyone have any kind of suggestion what to do in this case? Reagrds, Adam Novak ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
