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Post by bstanley72 on Jul 2, 2019 16:37:29 GMT
This is a relatively new occurrence. When I home the machine I get the following:
_
I didn’t really think it would make any difference, however, in the last few jobs I’ve gotten into the spoil board a bit. On my last cut I used a 123 block and a continuity meter as a make shift touch probe to set the Z, and it still went into the waste board a little.
Is this coincidence, or is there a problem?
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Post by Derek the Admin on Jul 2, 2019 23:04:37 GMT
The larger number is the work coordinate system. Is that being updated after you probe it?
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Post by bstanley72 on Jul 3, 2019 0:51:45 GMT
Yes, it is. Until recently it would show 0.00, -4.00 after homing just like the X and Y. But it does change when I jog the z axis, and will zero if I use a G92 command. I just don't know enough to know if this matters. I've had good luck not hitting the spoil board until recently, didn't know if this had anything to do with it.
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Post by Bruce on Jul 3, 2019 2:51:37 GMT
How are you setting the zero coordinate for your work piece? Lower left corner or in the center?
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Post by bstanley72 on Jul 3, 2019 21:28:20 GMT
Setting zero lower left of work piece. The screen shot above is after homing the machine, have the homing switches installed.
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Post by Bruce on Jul 4, 2019 17:13:47 GMT
I think you might have homing the machine coordinate and setting the work coordinate zero confused. The top number sets your work coordinate zero location. It can be any number displayed while you home the machine. When the homing is complete the bottom number should read -4.000 (mm) the top can be any number at this point.
Then when you go setup your work piece and get it clamped down. You move the endmill to the lower left corner of the work piece and you set the work piece zero with the top number listed. Now the top number should read zero for each axis. The bottom number will be -334 or some other negative number.
When you have completed this routine you have told the machine were your work piece zero is in relation to the machine coordinates.
At this point you can shut everything off and go do something else. When you come back to the machine, run the homing routine, and wallah! you can load your tool path and start milling. Of course you don't want to move the work piece during this time until you have completed all your milling processes.
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