On 05/21/2010 12:11 PM, Gene Heskett wrote: > >>> (G1 F40 X2 Z-.0662) (you are going in straight line at Z-.022 per " of X) >>> (G1 F40 X3 Z-.0684) >>> (G1 F40 X4 Z-.0706) >>> (G1 F40 X5 Z-.0728) >>> G1 F40 X6 Z-.0750 (here you start a -.030" taper) >>> (G1 F40 X7 Z-.0780) >>> (G1 F40 X8 Z-.0810) >>> G1 F40 X9 Z-.0840 (then straight for last 2 inches) >>> (G1 F40 X10 Z-.0840) >>> G1 F40 X11 Z-.0840 >>> G55 G0 Z0 (I would go higher here for return clearance) >>> (G4 P2) >>> G55 G0 X0 >>> M2 >> >> I really don't want to change the Z dimensions at those 1" stations. > > The point is that EMC will hit those exact locations as it goes by them, and > it will do the moves without any little hitches in the motions as it does, > faster, smoother being a Good Thing(TM). ;)
Maybe, maybe not. We're talking about a 1" movement on teh X axis versus a .0019" movement on the Z axis moving from X1 to X2, then a .0016" movement on the Z axis in the next. These aren't straight tapers by a long shot, though in some cases it might seem to be. This is just a short section of a real rod tip. With explicit callouts for each inch, I'm a lot more comfortable that it will hit each and every Z dimension at each and every X dimension. > >> That's what the rod taper is based on. I'm using a 2" lead in and a 2" >> lead out both for tool clearance from the work piece, and also as >> wastage length on the strip for binding the strip when it's being glued up. > > Is your X in feet then? Otherwise this seems like an awfully short fly rod. > ;) Nah, as I mentioned above it's just a snippet of a real rod taper just to see if the G code i was writing would actually work. > > So the mount is going to be a wee bit elastic due to the rubber/plastic > gaskets to maintain that seal I would think. No idea what your vacuum pump > is, but I have one that is intended for AC evacuation duties that can pull a > -29.2" vacuum when the barometer is in the 29.4 range. Beware that those > pumps will output a very very fine oil mist when they have pretty well > reached their ultimate pull. I left it running overnight once while bagging > a lamination stack, and found my shop had a visible fog in the air that took > open doors on both ends of it, and about an hour to dissipate well enough it > was worth cleaning my glasses. That cannot be good for lungs either. For > short term runs, say 15 minutes, it doesn't seem to do that. >>> Some video would be educational to us. ;-) A very wee bit. It compresses down and there's little or no give. The vacuum pump is a piston driven one, not one a them funky little vane ones. Powerful sucker, so to speak... ;-) >> >> I'm just air cutting right now. I'll to take some video on my digital >> camera this afteroon and then try to figger how to post it online. >> >> Mark ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
