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Plasma help please
« on: August 21, 2015, 06:56:32 PM »
Hello all
I have a fairly new 5'X10' CNC plasma table I am doing pretty well drawing in auto cad (self taught just keep trying stuff ) but now I want to cut 6'' donuts with about a four inch hole and the sides don't come out even any body can help me ?

« Last Edit: August 22, 2015, 07:27:32 AM by Tweakie.CNC »

Offline BR549

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Re: Plasma help please
« Reply #1 on: August 22, 2015, 10:18:11 AM »
IF the circles look ROUND in CAD and look round in CAM and look round in the control toolpath then it is a machine problem. It could be backlash OR axis calibration.  OR both.

(;-) TP

Offline Davek0974

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Re: Plasma help please
« Reply #2 on: August 22, 2015, 01:16:51 PM »
Is it belt drive, direct drive, screw drive???

Check for slack belts, loose pinions(not always easy to find), loose pulleys etc first

I would then carry out axis step calibration on all axes.

Does the error get worse the more you run - loosing steps or is it just wrong all the time - see above.

Bridgeport Mill, Mach3 V062, CSMIO-IP/A controller, AC Servo Drives