Hello fellas cnc enthusiasts.
I have build up a High speed machine in last few weeks, and I am having trouble with understanding Mach3 logic.
My machine setup.
Leadshine easy servo motors with drivers, 4Nm.
Max feedrate 10000 mm/min
Acc: 2000mm/s/s goes up to 4000 mm/s/s without problems, but that is insane acceleration.
Ball screw 2505 C3 precision.
All axis are below 0.01 true, with work table max 420x420x100 mm.
Machine does not stutter and shakes. Cutting in pure motion, without any hiccups.
Few problems which occurred.
1. Mach3 does not cut the same paths on the feed rate on 100% (around 30 mm/s) and on 50 %. How can this be, and why is that?
2. Making a part on CV=180 is not the same as CV=1, or ever CV=0.1 -- Can anyone explain a bit on this.
Questions:
1. Is this common issue with Mach3, and should I consider moving to EMc2 or Mach4?
2. What is the lowest CV tolerance that can be set? Mine is set to 0.1 mm, but I will be going to 0.01 or even less.
I have been making JIGs for my parts, and to tolerances from that CV is affecting my parts significantly. I should be running tolerances around 0.005 mm on 100 mm range, but there are tolerances greater than 0.1 mm.
The parts that has been cut on CV=180 cant fit my JIGS at all, while parts made on CV=1 can fit but with some convincing.
I have read up all the common issues with CV and Mach3, but I just need an answer why does Mach3 cuts differently on different speeds.
Thank you
Marko