Machsupport Forum
Mach Discussion => General Mach Discussion => Topic started by: lemonhead on February 05, 2015, 03:39:35 PM
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I have read quite a few posts but am still stumped, I am setting up a rotary axis on my router table but do not have the steps quite right I believe. I have a g203 with 10 microsteps and a harmonic drive rotary with 50-1 reduction. The numbers I came up with is 222.222 and .0036 The first one makes it turn fairly smooth however sometimes when I am jogging it goes the wrong direction, the second number .0036 just makes it growl. Also when the axis indicator rotates once the chuck rotates about 5 times.
http://www.ebay.com/itm/291270426575?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT Ebay 4th axis
Chuck type: K11 100mm three jaw centering chuck
Center height: 65mm
Total height: 115mm
Angle: 0.036°/ step (0.018°/ step for 100:1 )
Gear box output shaft diameter: 25mm
Reducing ratio: 50:1 (or 100:1 )
Stepper motor: Nema23 57mm 3A 2-phase 4 wire
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200 x 10 x 50 = 100,000 / 360 = 277.7777 steps per degree.
The other # is degrees per step ... which Mach does not use.
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or if its 100:1
555.55555
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I have put in 277.7777 in the steps box, sometimes it will spin but will not always turn the right direction, the rest of the time it will just growl and jerk back and forth, I have my acceleration at 15 and velocity I have been trying different numbers faster seems to work better but not properly.
Thanks for your help so far!
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Never mind, figured it out myself, My stepper has a nonstandard wiring pattern, have is running now :)