Re: CNC Machine with built in radius compensation
Posted: Tue May 10, 2022 2:07 pm
Thanks for your posts, they really clearified things for me.
But one thing I don't get is how to use CRC to only compensate the difference? eajmarceau also talked about this but was is a compensation register?
Let's say i have a "design" bit with 10 and the actual value is 9.89. How would I tell the maschine to only compensate 0.11? As for our maschine it always compensates the full tool radius. (For sure you can't know how our maschine works, but how would you do it with a LinuxCNC?)
Yes I can see why It can be dangerous. eajmarceau explained a issue that I already ran into but did not fully understand to this point.I find it most useful to not use CRC at all and use Path to do all offsetting. I only make one-off and small run parts so that works for me. If I need to adjust the offsetting value, it's easy enough to change the tool in Path and re-post the file. If I was running a production shop and needed the operator to make fine tuning adjustments to the path, I would use CRC but only for the wear compensation. As others have noted, using CRC for full tool radius offsetting is dangerous.
But one thing I don't get is how to use CRC to only compensate the difference? eajmarceau also talked about this but was is a compensation register?
Let's say i have a "design" bit with 10 and the actual value is 9.89. How would I tell the maschine to only compensate 0.11? As for our maschine it always compensates the full tool radius. (For sure you can't know how our maschine works, but how would you do it with a LinuxCNC?)