On Sun, 2009-06-14 at 20:24 -0700, Kirk Wallace wrote: > On Sat, 2009-06-13 at 22:31 -0700, Kirk Wallace wrote: > > On Fri, 2009-06-12 at 22:22 -0700, Kirk Wallace wrote: > > > In case anyone is interested, I have an .ngc file that I'll probably run > > > tomorrow, but if anyone finds anything that might improve it, I would > > > appreciate hearing from you. Thanks. > > > > > > http://wallacecompany.com/machine_shop/EMC2/ngc/encoder-100ppr-4c.ngc > > > > > > > I tried making the part tonight and ran into a problem. I did a dry run ... snip
In case anyone is interested, I finally got a good part. There were two prominent problems. One is the program stop at hole 19 when actually cutting metal, the other, the AXIS red lines for the center hole would disappear while air cutting detents near hole 21. I went back to a bare-bones XYZ axes only configuration and was able to complete a good air part. I added features to this config while testing until I got the spindle and mist going. At this point I had enough to try a real part, which failed. Then I swapped out the VFD and noted that its indicated frequency also varied, but to a lesser degree. I tried running a part and had success. So it's not clear what the problems were (or are). It may be one or a combination of my original configuration file and/or a noisy VFD. The working configuration file is missing the original MPG, pyVCP spindle and MPG control and display, and a lot of commented out future features. I had the original VFD in a separate metal enclosure with an input filter and a bead on the motor output, so it's hard to believe that this would be a source of the problem, but I now have a good part: http://www.wallacecompany.com/machine_shop/Shizuoka/dcp_6786-1a.jpg http://www.wallacecompany.com/machine_shop/Shizuoka/dcp_6789-1a.jpg So I'll probably put the rest of the features into the new configuration, use the new (but way old Mitsubishi Z200) VFD and go on to the next part. (Other good news/bad news. I blew out the serialDAC, but had a spare chip. I'm looking for advise on how to protect the output op-amp: http://www.wallacecompany.com/machine_shop/EMC2/serial_dac/serial_dac_sch.png I also got my ATtiny2313 programmer and proto-board working, but blew both 2313 chips I had on hand the first day, with no gratuitous smoke either. I'm looking for a 2313 simulator that will run on Ubuntu so I can test programs before I try to program real chips.) -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
