[davidturnswood]

non calibrated.rdk(Size: 5.95 MB / Downloads: 254)

Jeremy pid='12128' dateline='1648553334']Thanks for your comments.
I certainly plan on creating such a tutorial in the future.

Jeremy

That would be excellent!

I am giving the machining a try now, and running into an interesting problem. I've imported an nc file from Fusion to Robodk (maybe I should try another file format?). The fusion simulation looks perfect - the first 7mm deep cut looks like a long spiral in the shape of an irregular rectangle, with a small, consistent overlap of 1.5mm.

Robodk also appears to have the correct path drawn in the 3d interface, and described in the simulation.

However, once the robot begins cutting the path, it clearly has a mind of it's own. It is a bit erratic - sometimes following the path described, at other times acting a bit like a pinball machine, taking diagonal paths across the space, bouncing around, with a lot of tool time not actually cutting. Unfortunately, this pinball-like-path, while mostly functional, removed two importand chunks of plywood that were meant to be left, as a result of un-planned diagonal cuts. There are also some small areas of wood left over where the path did not intersect them.

This is also a problem for me because I don't want to stress the robot or router too much, and was not planning on having more than a 1.5 mm overlap for most of the cutting. Quite often, the overlap is a full 1/4", ploughing straight through areas it was supposed to be gently trimming.


Could this have to do with the tolerance settings for joint singularities? I don't think I've played with those and believe they are at their defaults.

I'm using a 1/4" carbide cutter, and have tried this with my tcp calibrated, as well as non-calibrated. I don't see any difference in the path. Photos and station attached for clarification.

你的人have any idea I could try for getting a path that remains closer to the one simulated? Despite the fact that I am having some hiccups, I am really enjoying learning to do this work. This is the first time I've attempted to mill anything substantial with the robot. :)


non calibrated.rdk(Size: 5.95 MB / Downloads: 254)

Thanks!

David