I have programmed a cmm, but I really don't remember anything about it. Rapid moves are like g code, but I think the one I used had a probe command.
On Wed, Feb 5, 2020 at 1:00 PM N <nicklas.karlsso...@gmail.com> wrote: > Anyone used a coordinate measurement machine and know how they do? > > Maybe I happen to have manual but will probably not have to much time to > look into it this week. > > > I think it comes down to constructing lines perp to the profile at > > probed points. CMM's obviously take care of this somehow. > > > > I've done it the hard way by drawing circles the diameter of the probe > > and then doing three pt arcs to fit. Certainly there are better and > > considerably more elegant ways to do this. What I can visualize in > > concept I cannot convert to good calculations. ;-) I passed calculus > > but knew better than to try dif-e-q. A second order curve fit tangent to > > multiple circles might be a better approach. > > > > "Implementation is left as an exercise for the student." :-) > > > > Dave > > > > On 2/4/20 3:57 AM, andy pugh wrote: > > > Does anyone have a G-code routine to probe around a profile to trace > it out? > > > > > > I imagine some sort of "keep turning right" algorithm should be able > > > to walk round a profile, though exactly how you compensate for probe > > > diameter on external corners has me a bit stumped. > > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
