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Reduce vibrations of Stepper

Posted by MaikB85 
Reduce vibrations of Stepper
January 08, 2016 10:33AM
Hello

I have a Mendel90 and some problems after I replaced the linear bearings and rod of the X and Y axis with some high quality parts (bearings: SKF LBBR 8 2LS). Now I have more vibrations on these axes especially with slow speeds under 25mm/s. Is there a way to reduce these vibrations? Maybe with acceleration settings or other motor drivers?
I use the RAMPS 1.4 Board with the A4988 pololus and newest Marlin firmware 1.1.0 rc3. Also tested a stepper test sketch and changing current for the steppers but no difference.

Hope someone could help me!

Maik
VDX
Re: Reduce vibrations of Stepper
January 08, 2016 10:42AM
... higher microstepping can help, or adding higher 'seismic' or damper masses to the axes ...


Viktor
--------
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Call for the project "garbage-free seas" - [reprap.org]
Re: Reduce vibrations of Stepper
January 08, 2016 10:57AM
microstepping is at 1/16
Re: Reduce vibrations of Stepper
January 08, 2016 11:09AM
Have you tried Astrosyn dampers? I have them on the CoreXY Im building and it is pretty darn quiet.


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Re: Reduce vibrations of Stepper
January 08, 2016 11:18AM
Quote
gmh39
Have you tried Astrosyn dampers? I have them on the CoreXY Im building and it is pretty darn quiet.

no not yet. I will order them an try if this is better.
VDX
Re: Reduce vibrations of Stepper
January 08, 2016 11:41AM
Quote
MaikB85
microstepping is at 1/16

... I'm running my machines with 1/128 or 1/256 microstepping and NEMA-23 steppers and -servos -- it's a big difference in noise and resolution, but you'll need 32Bit processors or expensive industrial controllers ...


Viktor
--------
Aufruf zum Projekt "Müll-freie Meere" - [reprap.org]
Call for the project "garbage-free seas" - [reprap.org]
Re: Reduce vibrations of Stepper
January 08, 2016 08:04PM
Cut up a mouse mat, one square on the face of motor and another one the base of the bracket, squashes down to nothing but it sounds quiet enough to me.
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