On Sunday 12 April 2015 09:47:20 TJoseph Powderly wrote: > Gene, > Yes the cut is in the X axis, > > A Z only edm is not worth cnc > it has to cut in any direction, circles in any plane. > This machine is 4 axis XYZC, and huge. > > the cut itself was a .02"x.375"rib cut an inch 'deep', > radially into 72 positions of ID of turbine ring. > These are heat expansion slots. > > The slope is the rate > and my point was that adaptive control would be a very flat > slope (ignoring the process) and even shallower ( slower). > > the X cut is a bit of misleading, as the program has been > rotated to allow the 72 cuts. Each cut displays its progress > as an X cut, although there really is a Y component.
Ahh, taking lessons from Andy? Or vice versa? :) He introed me to that technique back wnen I was carving some sprockets for #35 chain. And I've used variations of it quite a few times since in step & repeat scenarios. My only problem with the sprockets was the backlash in my cheap 4" Grizly table, left me with teeth about 2 thou wider than a perfect fit. They are not in a high wear situation, but have worn in decently since. I now have that tables center bearing pulled down so tight that to move it with a 252 motor, I have to inject about 100 psi into the table body to lift it a few microns to reduce the drag. I have consider half a dozen schemes to do that valve control from g-code but seem to have miss-laid my round tuit. Seems to be a hazard at my age. ;-) I do have tentatively on the summers schedule, a bit of electrical rebuilding, starting with a 20 volt higher PSU for the motors. That will also be a reconfiguring to use on of Peters excellent 5i25 cards as the air control will need at least 2 more I/O pins than I currently have. One out to enable the air valve or compressor, and one from a pressure switch to disallow moving it till the pressure is up. Keeps me from wrecking the work if I forget to plug in the compressor or if the teeny one dies. That, I've made plans so I don't have to run the big one, to keep a garden tractor battery on smart trickle charge, and rather than the sticky air valve, turn on a $20 tire inflator for the few seconds it takes to move the table to the new position each time it needs to move. The battery will of course die of old age, but then so will I. But I'm not that old yet, only 80. ;-) > I chose an example where the X cut was rotated 0 degrees, > so the scope showed the joint display ( not axis ) > > hth > tomp Thanks much TomP. Getting slow I guess, that thought, while looking at the scope trace, never crossed my mind. Maybe I should plead oldtimers? Sometime, you might describe how noisy it is. I tend to rate this stuff with the 30 db shooting muffs on, as noisy, damned noisy, and ohmygawd that hurts. ;-) > On 04/11/2015 11:08 PM, Gene Heskett wrote: > > On Saturday 11 April 2015 22:22:51 TJoseph Powderly wrote: > >> yes Gene > >> this is imagebin > >> http://ibin.co/1xzMzQKBwggW > >> thx tomp > > > > Other than the extra magnification, I had to shrink it to less than > > 50% to get it all on my screen, it works perfectly. And there was > > no advertising, which is always welcome. But with my years in > > broadcasting, to pay the bills, the viewer/listener must see or hear > > the adv. > > > > But the slope of the X, the 2nd live channel shown, makes me ask > > which axis was the edm being done in? > > > > My own edm experience is quite limited, consisting of drilling a few > > holes in steel that a common TiN drill just bounced off of, and > > removing some broken taps from a piece I didn't feel like throwing > > out and starting all over to make again. Both of those exercises > > were all Z motion once it was xy spotted & the z descent started. > > > > I've been looking at scope traces for a living since 1951. So the x > > motion during edm needs a 'explanation', IF you have the time. If > > not, thats ok too since your time, is what you have to sell. > > > > Thanks TomP. > > > > Cheers, Gene Heskett > > ---------------------------------------------------------------------- >-------- BPM Camp - Free Virtual Workshop May 6th at 10am PDT/1PM EDT > Develop your own process in accordance with the BPMN 2 standard > Learn Process modeling best practices with Bonita BPM through live > exercises > http://www.bonitasoft.com/be-part-of-it/events/bpm-camp-virtual- > event?utm_ > source=Sourceforge_BPM_Camp_5_6_15&utm_medium=email&utm_campaign=VA_SF > _______________________________________________ > Emc-developers mailing list > Emc-developers@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-developers 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> ------------------------------------------------------------------------------ BPM Camp - Free Virtual Workshop May 6th at 10am PDT/1PM EDT Develop your own process in accordance with the BPMN 2 standard Learn Process modeling best practices with Bonita BPM through live exercises http://www.bonitasoft.com/be-part-of-it/events/bpm-camp-virtual- event?utm_ source=Sourceforge_BPM_Camp_5_6_15&utm_medium=email&utm_campaign=VA_SF _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
