I also occasionally hear a loud thunk when cutting, which might be the cutter hitting a hard spot, but sounds a lot more like the sound of a motor coming to a quick stop.įor a bit more reference, I can jog the machine 600ipm with smooth acceleration and have no noticeable shake, but running a program at anywhere between 100-250 ipm can cause noticeable shake and chatter.Ĭan anyone recommend settings to tweak or other possible solutions to this problem. When the G code has lots of small segments this pulsing could occur. My current theory is that Fusion G code is overriding my controllers default acceleration as the servos have more than enough torque to shake the whole machine when their acceleration values are set too high. I can sometimes hear and feel the machine rapidly accelerate and decelerate both on complex 3D surfacing and even sometimes on simple 2D paths.

Typically the stuttering is on finish passes too, so between cutting wood with a sharp cutter and light passes there should be no mechanical reason for the chatter. 005' and sometimes that helps, but not always. My CNC router uses ballscrews on all axis and linear profile rails, along with leadshine easy servos, and is capable of very smooth motion after tuning the acceleration values in the controller software.Īs far as G code goes, I've tried smoothing values up to.

I'm using a UCCNC controller and I have been finding that some fusion G code leads to stuttering and chatter marks on my parts.

I'm trying to troubleshoot some issues with stuttering and jerky moves on my CNC router.

Fusion 360 cnc router