I just added some functionality to make Chilipeppr execute custom G-code after pausing for a tool change and before resuming. For tool changes, I’ve so far had to manually type code to move my mill over to the tool change position and back to the original position, which was slow and error prone. Now it will do that automatically, which will make tool changes much smoother. Hopefully this will be useful for others, too.
@Patrik_Jonsson very nice Präsentation. For my XATC (automatic tool changer) i use G59 Coordinaten System to use my special moves. But, my system are little bit more complicate and different to your’s, but very nice!
@Patrik_Jonsson any chance you’ve tried this with a touch plate? I ask because I’m having a massive problem with my TinyG locking up when I attempt to use the touch plate widget after an M6, Synthetos thinks it may be an incomplete M6 function on the TinyG but I’m willing to try anything to keep from having to load a different file for each tool.
@Patrik_Jonsson this is really great stuff. I will say I’m glad you made a video because it is a bit confusing all the commands going on with your tool change process, but I’d like to adopt your process into my workflow. Where did you get that guage block and what is cost? One technique for dealing with tool length offsets that is brute force that I use is just to reset machine coordinates, but I know that’s not the best approach. That mini mill looks awesome.
@jlauer The problem with resetting machine coordinates is that you can’t use soft limits, which I do. You could just reset the G54 Z-position to the gauge block, but that would force you to write down and type in some random number to 4 significant digits on every tool change. (You can’t count on remeasuring G54 Z0 since ypu may have milled away the datum.) Using G55 I know that the expected Z-position is just zero.
The block is like $60. Search “Z axis setter” on ebay.
Yeah, but it’s not always possible. And even if the datum is still there, if it’s e.g. at the bottom of the stock you can’t locate it without removing the workpiece and completely rezeroing your work coordinates.
One important thing that I missed in this video, and which caused me to break a $30 endmill: DO NOT use G28/G30 to return to the original position after tool change! Those are machine positions, so if you change to a longer tool, you’ll slam it into the stock upon return. Ask me how I know…