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Author Topic: setup  (Read 4472 times)

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Re: setup
« Reply #10 on: February 25, 2013, 04:02:40 AM »
i am following ya. when i input the 20,000 into my motor tuning, the DRO moves , but not correct. for instance, if i move x-axis 3 inches ,the DRO will read 20. As if the units were in mm instead of inches. Double checked that. The only way for me to get the DRO to read somewhat correct is to calibrate and allow it to change the motor setting to its new value.
Re: setup
« Reply #11 on: February 25, 2013, 04:10:40 AM »
This should be an easy entry. The math is straight forward. Before i installed the acme thread, i bench tested for accuracy. 10 revs per inch. motors coupled direct...
Re: setup
« Reply #12 on: February 25, 2013, 04:16:12 AM »
With the dial indicator, with the motors set at 20,000 steps per inch, the axis will move .085

Offline Hood

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Re: setup
« Reply #13 on: February 25, 2013, 04:16:58 AM »
Attach your xml and I will have a look.
Re: setup
« Reply #14 on: February 25, 2013, 04:19:51 AM »
In that case, 0.85 at 20,000 steps says to me you need to input 23,530 instead of 20,000. Give that figure a try and see if it gives you 1 inch of travel.

Re: setup
« Reply #15 on: February 25, 2013, 04:26:27 AM »
Just wondering if your machine is 12 tpi and not 10 tpi.

At 12 tpi, 24000 should be the correct steps per. Backlash may account for the 470 difference in my figure of 23530 to being 24000.

Re: setup
« Reply #16 on: February 25, 2013, 05:19:38 AM »
i just reloaded mach3. DRO seem to read correct now. not exactly, but looks to be only .100 of on y axis and .25 off on the x axis. the x axis is slaved. All the motor settings are the same. Z axis is only .005 off.

I will get my xml sent to you as soon as i can Hood. Thanks for all the help. I am new to this, but am confident I can overcome
Re: setup
« Reply #17 on: February 27, 2013, 07:30:08 PM »
I believe I have solved the problem. I uninstalled and  reinstalled mach3. Then input 20,000 steps into motor tuning. Then took sonicracings advice and set velocity and acceleration very low. I have some backlash, and have parts on the way for that. I made the first cut, and have minor issues.
I built my machine on a budget,and went over...oops. There is things i would have done different, but am satisfied for now.

Thanks for the support from evryone in this forum. You guys are great.