On Tuesday 18 August 2015 12:14:51 Jon Elson wrote: > 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
And that indicator mount is obviously NOT the spindle. URL for such a gizmo? Or did you make it, since that generally IS what we do. ;-) Thanks Jon. Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
