Hello, my name is Leving, and I have a problem: The TC is having a scary resonance of the complete machine, most likely noticeable in certain speeds with the wipe tower when it ramps up the speed. A spectremeter app was showing a peak at 230Hz, no matter if the wipe tower was oriented in X or Y axis. Has anybody experienced the same problem and may help to eliminate? Right now, I am printing 60x30x3mm plates to put between the extrusion and motion system in the hope to reduce the sound a little.
My accelerometer plots show various peaks in the 200-300Hz range, but only when the motors are moving. As they stop immediately when the motors are stationary, I think they must be either belt noise or motor mid-band resonance.
@dc42 I don't see anything like the z axis ringing that you are seeing. I wonder if that is typical of the tool changer? I have stiffened up mine quite a bit and Z axis ringing is almost non-existent. What tool did you have installed and what commands did you issue when you captured this data? I would like to replicate it on my machine and see what I get.
These plots were measured using a Hemera tool. I think the 42Hz Z ringing occurs because the centre of mass of the Hemera tool is lower than the X bar, so a Y movement excites a torsional oscillation of the bar and/or associated structures.
I managed to burn my Hemera up in the process of migrating to RRF 3.x and I haven't replaced all of the plastic pieces yet, but when I do, I'll give it a try.
