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Author Topic: Mach 3 issues, offsets for each pass about 0.5mm  (Read 2816 times)

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Mach 3 issues, offsets for each pass about 0.5mm
« on: December 28, 2013, 08:14:42 AM »
Hi

Have a strange problem with Mach3

For every pass i makes it offsets the cutting patern with 0.5mm ??
Has this something with the motor tuning to do.

Thanks

Børge

Offline ger21

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Re: Mach 3 issues, offsets for each pass about 0.5mm
« Reply #1 on: December 28, 2013, 08:33:08 AM »
Does it offset in one direction, or all directions? Can you post a pic of what it's doing?
Gerry

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

JointCAM Dovetail and Box Joint software
http://www.g-forcecnc.com/jointcam.html
Re: Mach 3 issues, offsets for each pass about 0.5mm
« Reply #2 on: December 28, 2013, 09:03:29 AM »
Hi

It offsets in two directions

-X and -Y

Børge

Offline ger21

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Re: Mach 3 issues, offsets for each pass about 0.5mm
« Reply #3 on: December 28, 2013, 09:26:46 AM »
Is the spindle perpendicular to the table?
Gerry

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

JointCAM Dovetail and Box Joint software
http://www.g-forcecnc.com/jointcam.html
Re: Mach 3 issues, offsets for each pass about 0.5mm
« Reply #4 on: December 28, 2013, 10:58:04 AM »
Yes it is.

 measured the  Zaxis, and its 89.4 degrees to the table.

i will post a pictyre of what happends.

Børge
Re: Mach 3 issues, offsets for each pass about 0.5mm
« Reply #5 on: December 29, 2013, 08:38:10 AM »
Here is a picture of the problem.
i tried to change the stepover, but dint do anything.
Could it be a motor tuning issue.

Børge

Offline ger21

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Re: Mach 3 issues, offsets for each pass about 0.5mm
« Reply #6 on: December 29, 2013, 09:05:09 AM »
Try reducing the acceleration in motor tuning by 50%
Gerry

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

JointCAM Dovetail and Box Joint software
http://www.g-forcecnc.com/jointcam.html
Re: Mach 3 issues, offsets for each pass about 0.5mm
« Reply #7 on: December 29, 2013, 03:45:57 PM »
Didnt help the issue

Børge
Re: Mach 3 issues, offsets for each pass about 0.5mm
« Reply #8 on: January 02, 2014, 04:12:16 AM »
Hi guys, and thanks for helping.
It looks like i figured it out.
I reduced the stepping from full to half, and tried again.
This time it was ok.

Borge