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Author Topic: How to calibrate a axis  (Read 1762 times)

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How to calibrate a axis
« on: April 19, 2016, 05:12:11 PM »
Hi all. I would like to know how to calibrate my a axis spindle in degrees of turn and what are all the settings I would have to set up in mach3 for this.

Offline RICH

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Re: How to calibrate a axis
« Reply #1 on: April 19, 2016, 06:01:29 PM »
Go to members docs and you will find info on how to do it and also a spread sheet that will calc it for you.
Also have a look in the Mach Manual.

RICH
Re: How to calibrate a axis
« Reply #2 on: April 19, 2016, 06:14:59 PM »
Thanks but what settings do I have to change in general. ..
Re: How to calibrate a axis
« Reply #3 on: April 19, 2016, 08:38:35 PM »
I haven't calibrated it yet as I was just air cutting but I noticed the when my gcode was running when the a axis turns the x axis moves -0026 for no reason do you have any ideas why.

Offline RICH

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Re: How to calibrate a axis
« Reply #4 on: April 19, 2016, 09:13:37 PM »
Have you looked at the Manual?

RICH
Re: How to calibrate a axis
« Reply #5 on: April 19, 2016, 09:36:09 PM »
Yes I have. I just found how to change my dro s from linear  to angular.  But I don't know why my x is moving slightly when my a moves when called.  It's almost like it is getting a power feed from somewhere. Other than that it's all fine. I ran part of a long gcode and it did the same thing every time.

Offline RICH

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Re: How to calibrate a axis
« Reply #6 on: April 20, 2016, 08:38:12 AM »
Quote
the a axis turns the x axis moves -0026 for no reason do you have any ideas why.

Something is sending an impulse to the X axis, could be noise.
If you command only an A axis move the X axis should not move.

For rotary the setup is in degrees and also not the following configurations :

Rotational:
Rot 360 rollover, if checked, will measure a rotary axis modulo 360 (0 to 360 then restart
at 0). Otherwise, it will keep counting up (for example, two revolutions would be 720).

Avg Short Rot, on G0, if checked, makes any rotary axis treat the position given as an angle modul.360 degrees. Moves will be by the shortest route to that position. For example, if the axis were at 0
degrees and a request was made to rotate to 359 degrees, it would rotate –1 instead of +359.

Rotational Soft Limits, if checked, applies software limit switches to rotary axes.

RICH
« Last Edit: April 20, 2016, 08:53:59 AM by RICH »
Re: How to calibrate a axis
« Reply #7 on: April 20, 2016, 09:42:05 AM »
Thanks that clarifis as I thought but I wasn't 100% sure thanks  Kevin