Motor Dropping!?

[abomb55076]

I have a MaxNC controller hooked up with the motors it came with on my homemade machine. Everything seems to work pretty good except for every once in a while the z axis starts to sound higher pitched when you move it and then begins to drop on its own like the motor has given out. What can be causing this?

[jalessi]

Abomb55076,

Most likely resonance, you may want to checkout the attached thread.

My take on a stepper damper

Jeff...

[abomb55076]

Does anyone know of some ways that I can fix a resonance problem? That contraption in the link above looks kind of complicated..

[jalessi]

Abomb55076,

Try using a hockey puck as a damper, several users have had successful results.

Jeff...

[abomb55076]

Could you explain to me what the resinance is causing for other users, it sounds like its more of a noise problem from vibrations but I could be wrong.

[jalessi]

Abomb55076,

Watch the attached video for a better understanding.

http://www.youtube.com/user/fixittt#p/u/27/8Am69_F93yA


Jeff...

[abomb55076]

Thanks for the quick help Jeff, so can resonance be the cause of why soemtimes, when I start up my motors, the z axis will run really rough, and then I will click reset on Mach and then it seems to run fine?