On 08/18/2015 07:32 AM, Gene Heskett wrote: > Greetings all; > > I am getting an artifact in my carving such that when the mating pieces > are turned around and the joints meshed, indicates the head may be > tilted a fraction of a degree. My method for checking this is to have a program that mills a circular groove in a piece of scrap. So, it just lowers the cutter onto the work and then does a 360 degree orbit in the X-Y plane. Then, I attach a dial test indicator to a mount that allows me to sweep the indicator around the circular groove. Since the ways on my machine have some wear, I get a saddle shape in the groove. But, by comparing the two points at the +X and -X, and +Y and -Y, I can figure out what is due to tilt of the head and try to adjust it out. The first time you do this, the tilt of the cutter on the plate causes a second-order error, so you have to repeat the procedure at least once. I can get the error down to undetectable levels in a couple tries. You want to make the orbit as large a diameter as possible given the travel limits of the machine. This has the effect of magnifying the dial indicator readings.
Jon ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
