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General Mach Discussion / motor tuning issue
« on: March 19, 2014, 09:06:45 PM »
sort of a loaded question here, I had to do a retrofit on an old plasma table finally got it up and running/cutting. problem is I cut out some round pucks to see accuracy (which use to be within .015") and at 1.00 it was .015 big but when I got to 3.00 it was .19 big and at 5.000 it was .27 big (and I imagine it grows exponentially from there.
I'm using 2000 steps per rev in the motor tuning setup and I imagine that's what will have to be more accurate. the problem with getting more accurate is I have no info. on this machine (I can figure out the pulley gear ratio) but there is no info on the stepper motors I am using (not even a brand name) and I'm not sure there is a way of figuring out how many steps per revolution are actually on this motor... or if anyone thinks they have a better idea of my problem I am certainly open to suggestions!
I'm using 2000 steps per rev in the motor tuning setup and I imagine that's what will have to be more accurate. the problem with getting more accurate is I have no info. on this machine (I can figure out the pulley gear ratio) but there is no info on the stepper motors I am using (not even a brand name) and I'm not sure there is a way of figuring out how many steps per revolution are actually on this motor... or if anyone thinks they have a better idea of my problem I am certainly open to suggestions!