Can get 1 and 0.5 degree positioning with 360 teeth and two locks, with one lock spaced n+0.5 degrees away. Start at zero degrees, turn 10 then engage the lock that's at zero. Drill, then turn 22.5 degrees and engage the other lock which is at 20.5 degrees.
Could further increase the options with a third clamp at 30.33 degrees. Put as many clamps on as needed, as close as they can physically fit, to provide precision locks at a variety of sub-degree increments for common polygon angles that aren't whole degrees. On Thursday, November 23, 2023 at 12:29:25 PM MST, Chris Albertson <albertson.ch...@gmail.com> wrote: > On Nov 22, 2023, at 1:06 PM, gene heskett <ghesk...@shentel.net> wrote: >> > I'd have to agree Andy. I need to design a disk brake for my A axis as > there's half a degree of slop in the worm drive which if it gets to the motor > will be held, but the slop in the worm makes for sloppy looking holes, but > the activation method is still in my head. Even that is only important when > drilling a hole for the handle. I'll come up with something. Would a simple disk brake work? I think it might clamp the part any place within that 1/2 degree of slop range. Ideally, you would have an index plate and some way to place a pin in a hole to lock the table. But you could only have a few holes and not enough holes for one at every place you might want to stop. What if the disk had “V” slots cut in the edge. Like a very large US Quarter Dollar, but with maybe 360 grooves. Then you could wedge a shape (like a tiny axe head?) into the slot and force the disk to stop on an even degree. You could use more than one wedge, space them around the disk. _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
