oops - here are the pictures of his edm work http://electronicsam.com/images/Pete_G/edm.jpg
http://electronicsam.com/images/Pete_G/edm_xc.jpg sam On 3/4/2013 8:30 AM, sam sokolik wrote: > I had a little CNC get-together Saturday mainly to help Pete G setup his > 5i25. Pete G had been mentioned recently on the list about his diy edm > setup. He is using rutex step/dir drives and the rutex break out > board. I sent peter from mesa the pinout of the rutex BOB and he sent a > new firmware for the 5i25. Updating was painless and we looked at the > port with a scope to double check that the step/dir pin locations had > changed. I had found someones 5i25 config on the forum and set it up > for Pete_G hardware. (he isn't using any daughter boards yet.) > > This is the email I got back from him after running all day sunday.. > > Hi Sam: I set up the Rutex based controller on by Bridgeport mill, > edited the scale values in the .ini file and went zooming. It went in > the right directions, and fast. I ran out of nerve at 3/4 inch per > second/ 45 IPM. The machine never went as fast as 35 IPM before. The > linuxcnc has a much nicer interface than the ancient version I was > running. I like it a bunch. Thank you for working with me on this > project. This is a great improvement over where I was. > > So that is a big YAY - he has a Dyna 4400 that he has starting converting. > > Thanks Peter(mesa) for your quick firmware mod and the overall coolness > of your hardware :) > > He also talked a bit about his edm (couple emails). (his own software).... > > You mentioned that my name came up on the list-serve about EDM > work. Attached is a picture that shows a little embossing wheel that I > made with coordinated X and C motion and a sample of wire EDM work I > did. In both cases, the software executes the G-code forward and > backward, whatever it takes to maintain the erosion gap voltage as > needed. The sinker software will back out on a programmed basis, either > along the pathway in or toward pre-programmed escape points. The wire > program backs up a specified distance (regardless of the number of line > segments traversed) and then follows a small "X", trying to clear the > crud and get sparking again. If that fails, the motion stops but > controlling the wire travel speed or shutting off the wire was not > included in the program. One day i'll do that and add other necessary > features. I also have a picture (not attached) where I eroded with > coordinated Z & C motion and threaded a hole in a file. > > Attached is a picture that shows the roll-die and the threaded > hole. For flushing, the threading electrode backed its way out of the > hole. When making the roll-die, it was rolled across the face of a flat > electrode with coordinated X & C motion, with escape moves in the +Y > direction for flushing/ gap contamination. You can post either of both > of the pictures. > > I should have explained that the escape moves and backing out for > flushing are NOT part of the g-code. The programmer couldn't possibly > know at what points the electrode would need to be backed out. My > software monitors that gap voltage and when it is too low it will create > it's own destination_X, y, z, c values to move to in order to clear the > problem. Once the erosion gap returns to normal, my software erodes its > way back to the where it escaped from the program path and then > continues on the programmed path. The key to EDM is to monitor erosion > conditions (voltage) and to move forward and backward on the programmed > path to maintain erosion conditions. Or escape off to the side if > needed. Some people insist that there must be a feed rate in EDM. > There is not. > > pete > > Thanks to all for all the hard work on the linuxcnc project!! > sam > > > ------------------------------------------------------------------------------ > Everyone hates slow websites. So do we. > Make your web apps faster with AppDynamics > Download AppDynamics Lite for free today: > http://p.sf.net/sfu/appdyn_d2d_feb > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > > ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_feb _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
