Greetings,
I'm a beginner and I'm working on a DIY machine running on mach3.
I posted a similar thread on a Fusion 360 forum to solve the problem on the CAM side but I'm almost sure that this problem can be solved also through mach3 settings, maybe CV settings.
I was testing an end mill with an adaptive toolpath and I noticed that in some points there was a sort of micro-stalling (like a lost step in the stepper motor) in the linear motion and I thought it was a stiffness problem. After running the contour toolpath for finishing, which ended up having a width of cut comparable to the roughing pass due to my concern about stiffness, I noticed that this stalling was absent. I looked at the toolpath and noticed that in the adaptive strategy in single axis movement there were intermediate positioning command. Basically suppose I'm in A in order to go to D the adaptive toolpath commands to go to B and then to C and finally to D; contour instead simply commands to go to D (which is equivalent in the example).
I'm confident that the micro-stalling in the machine is not related to stiffness but that the machine stalls when it reaches this intermediate position and then it starts again after few milliseconds. Like if there is a deceleration before reaching point B.
I can't post the video here so this is the link with the post on autodesk forum where you can see the video
https://forums.autodesk.com/t5/fusion-360-support/intermediate-positions-in-linear-movement-during-adaptive/td-p/10172952In the video you can see the stalling event with no load. The code is from another run but for example lines 81, 82 and 83 seem useless to me.
Is there something I can check?
Thanks. Sorry for any English problem.
Stefano Prato.