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« on: December 01, 2010, 03:43:05 PM »
I get a different sized hole depending on the direction I cut it. Most of the problem lies in a machine designed for wood, which is being used to cut aluminum stock.
In every machine there is some slop, the machine will bend as the tool is forced through the material being cut.
Is there a way to compensate the path for the forces on the tool?
These forces will be 90 deg from the direction of the tool path. I am aware that that the actual force cannot easily be measured, but a nominal value could be assumed for a given material, rotary speed, tool feed rate, and depth of cut. In my case, these items are relatively constant, and one number, for each axis, may do the trick. It may even be possible to pick up some of these values from the g-code settings.
I haven't ruled out backlash, but I have done a lot to minimize it.
Thanks, Bill