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Author Topic: Zero touch off  (Read 1031 times)

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Offline PSL

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Zero touch off
« on: April 01, 2015, 04:09:54 PM »
I just got my mill up and running after a computer crash. After I touch off the z axis to 0.00 and then start a program the z axis goes below the touch off point. Is there something in the program that I am not doing or over looking? Any thoughts would be great.

Offline PSL

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Re: Zero touch off
« Reply #1 on: April 01, 2015, 06:47:57 PM »
I should have said tool touch off. Then I zero out the z axis.
Re: Zero touch off
« Reply #2 on: April 02, 2015, 07:23:33 PM »
Since Z0 is ussually the top of the stock you'd better have some Z negative values or you won't cut anything!  That said, park the Z up high zero it then run a program in single block mode. Watch every line and see what every G and M code does one line at a time. If the tool is supposed to be above the part there should be a Z move that gets it there and you should see it go there and the display value should match.  I always start in single block the first time I run a program. I step through watching where the tool goes next and I have feed speed way down. If the tool goes to the right place and next move looks correct then I switch off single block and continue.