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Offline diegone

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without precision
« on: February 16, 2012, 04:26:02 PM »
Hello, I'm having some trouble with my cnc, SETTING or calibrate the axes
 for example to 40 mm, and the measure now makes me perfect when I get this measure eg 0.1 mm to 50 win and if I do piedo 30 mm 0.1 mm, this again, it has to be calibrated after the axes and correjido the backlash,.
 The transmission is synchronous belt.
 someone can help me with this problem?
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Offline iv-cnc

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    • Mach3 based complete CNC for plasma, oxygen or waterjet.
Re: without precision
« Reply #1 on: February 17, 2012, 11:56:14 AM »

You probably have backlash.

Disable backlash and travel to one direction for a few centimeters.
Make zero this axis.
Go to the same direction for 1 meter (lets say) and measure it.
If it is 1 meter exactly, then go back to zero.
Measure it. If you have difference this is the backlash value.

If the measurements are crazy, then your machine might slide somewhere.

John
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