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Author Topic: X and Y Alignment  (Read 1003 times)

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X and Y Alignment
« on: May 04, 2018, 07:42:38 PM »
As I am extremely new to this, I have to be very careful, and try to use the right language to describe the problem I am experiencing....otherwise you will be more confused than me  :D

I have my work piece located on the bed, touched off and set the ZERO for all three Axis.

However, when I load my simply GCODE - the table view show the work piece with an approx offset in -8mm in Y and -3mm in X

Re: X and Y Alignment
« Reply #1 on: May 04, 2018, 08:02:04 PM »
Hi,
have a look on the Toolpath Tab and look at the 'Program Extents' block.

From your description the Gcode file has its leastmost extents of -8mm and -3mm. It means that the Gcode is not starting
at the outer most corner but 8mm and 3mm iside the boundary.

Craig
My wife left with my best friend...
     and I miss him!
Re: X and Y Alignment
« Reply #2 on: May 04, 2018, 08:15:43 PM »
You might be onto something
How do I change this ...when I enter a value it resets back to the 11 and 4

Re: X and Y Alignment
« Reply #3 on: May 04, 2018, 09:32:52 PM »
Hi,
you can't change that, those are the extents that the machine will go with the Gcode file you have loaded. You could change the Gcode....or
load the Gcode and then using the jog buttons jog to the material edge THEN zero the axes. You will have to 'Regen Toolpath' several times while trying to locate a suitable
starting location.

Craig
My wife left with my best friend...
     and I miss him!
Re: X and Y Alignment
« Reply #4 on: May 04, 2018, 09:35:59 PM »
Hi,
by the way when you attach pics use a program like Paint to reduce the size.....a 4Meg photo loses its ability to convey info when you have to scan around, sub 200k is enough.

Craig
My wife left with my best friend...
     and I miss him!
Re: X and Y Alignment
« Reply #5 on: May 04, 2018, 09:46:49 PM »
4MB noted.....

If I jog to the 0,0,0 of the work face then run the code....the machine tries to start the work in space....is it thinks the work is offset I think

Doing my head in  slightly

Re: X and Y Alignment
« Reply #6 on: May 04, 2018, 09:57:46 PM »
Hi,
essentially the problem is that the 0,0,0 of the blank material is not the 0,0,0 of the Gcode.

Its not particularly convenient but if you put the tool tip inside the boundary of the material blank at the Gcode 0,0,0 then hit start you'd be fine.
Another trick along the same lines....if the program extents are -14mm  and -4mm. Jog to the corner of the material and zero the axes.
Issue an MDI G0 X14 Y4. That should now be co-incident with the Gcode 0,0,0. Zero the axes again and hit start.

Craig
My wife left with my best friend...
     and I miss him!
Re: X and Y Alignment
« Reply #7 on: May 04, 2018, 10:17:16 PM »
I enter this in the MDI tab and get the result

Unknown word where unwary operation could be
Re: X and Y Alignment
« Reply #8 on: May 04, 2018, 10:29:02 PM »
Hi,
I suspect that you must be entering a bad character. MDIing is as old and as basic to CNC as the hills.

G0 X14 Y4.....just to confirm that  is 'G' 'zero'

Craig
My wife left with my best friend...
     and I miss him!
Re: X and Y Alignment
« Reply #9 on: May 04, 2018, 10:31:31 PM »
Hi,
whereabouts in NZ are you.....I live in Akaroa, about 80k from Christchurch.

Craig
My wife left with my best friend...
     and I miss him!