fr...@fs.tum.de wrote: > Hallo, > I new to EMC and before I start to work my self through the documentation > and try to get it running with my machine I’d like here your opinions: > > I’m looking for a solution to control a 4 axis CNC mill (3 axis router + > rotator axis). At the moment the mill is controlled using Mach 3 running > Windows XP. The mill is controlled by simple step and direction signals, > it is connect to the PC by using two LPT ports. So I think it should be > rather easy to setup EMC, right? > > The reason I’d like to change the soft CNC is that Mach 3 slows down the > machine dramatically on complex fine cuts with a large number of short G1 > movements. Can I expect an improvement of the cutting speed by utilizing > EMC? I think it depends on how good the tool path look ahead is. What can > I expect from EMC running on a standard PC (3 Ghz Core 2 Duo, 2GB RAM, 2 > PCI LPT cards)? > I did some testing last year to see how well EMC2 could handle a long string of very nearly co-linear short vectors. I've looked hard for the original message, but can't find it. But, I seem to recall that I got over 600 vectors per second when I had the right G61.1 setting, so that the allowance for divergence between the lines was sufficient to maintain the commanded feedrate. This was on a 600 MHz Pentium 3 with a "real" servo control, so there were no software step generation issues. The test program was a 2" diameter circle composed of 10,000 vectors. It executed in ~13 seconds.
Jon ------------------------------------------------------------------------------ This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
