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Author Topic: 3 Axis Machine Not Returning To Zero  (Read 994 times)

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3 Axis Machine Not Returning To Zero
« on: March 04, 2016, 03:23:56 PM »
My machine was running great for awhile (thanks to folks helping on here)

But now it a couple of times did not return to zero after a job. I noticed this once, then did an inlay (male and female) the pieces did not fit as they normally do but the machine did return to zero both pieces.  Then I did a sign and while the sign turned out , the machine did not return to zero after finished...

I am still very "green" with cnc machines and especially the major programming stuff...  Any clue what would cause this or how to tweak it back to when it was running perfect?

TIA

Offline ger21

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Re: 3 Axis Machine Not Returning To Zero
« Reply #1 on: March 04, 2016, 04:17:07 PM »
What kind of machine is this? You need to check all the moving components for binding. Lubricate if necessary.
If that doesn't help, you may need to lower your accel and velocity in motor tuning.
Gerry

2010 Screenset
http://www.thecncwoodworker.com/2010.html

JointCAM Dovetail and Box Joint software
http://www.g-forcecnc.com/jointcam.html
Re: 3 Axis Machine Not Returning To Zero
« Reply #2 on: March 04, 2016, 04:39:15 PM »
Thanks Gerry,

I really trust my motor settings because Tweakster and RobertSparks helped me and the machine has been running great ever since...  ( a couple of months)..

This is a Romaxx WD-1 machine.. Uses stepper motors and ballscrew... 

It is a newer machine and I am a newbie to this stuff.. What lubrication is best for areas of moving parts?

Thanks,

Offline ger21

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Re: 3 Axis Machine Not Returning To Zero
« Reply #3 on: March 04, 2016, 06:08:33 PM »
You need to grease the ballscrew regularly (but not too much).
I'd ask Romaxx what they recommend.
Gerry

2010 Screenset
http://www.thecncwoodworker.com/2010.html

JointCAM Dovetail and Box Joint software
http://www.g-forcecnc.com/jointcam.html