Machsupport Forum
Mach Discussion => General Mach Discussion => Topic started by: PSL on April 01, 2015, 04:09:54 PM
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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.
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I should have said tool touch off. Then I zero out the z axis.
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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.