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Topic: How can I reduce motor noise? (Read 159 times) previous topic - next topic

hero198

https://youtu.be/ALplLAGQlb0

I'm making a sliding table.
I used a 1610 ball screw/nut and worm gear DC motor.
The motor is controlled by 2-channel relay (CW, CCW)
Speed control is not done.

It works well.
But the noise is too much.
I know that the bldc motor is noiseless, but I don't want to use a separate controller.

How can we solve it?
Please help me.

jremington

#1
Jun 14, 2018, 12:17 am Last Edit: Jun 14, 2018, 12:20 am by jremington
Try mounting the motor/gearbox on a flexible, vibration absorbing pad.

A flexible (rubber tube) coupler from the gearbox shaft to the lead screw might also help.

polymorph

I agree with jremington. That is gear noise being amplified by being attached directly to a big plywood sheet.

The screws need to have rubber between them and the box, too, or the noise couples via the screws.
Steve Greenfield AE7HD
Drawing Schematics: tinyurl.com/23mo9pf - tinyurl.com/o97ysyx - https://tinyurl.com/Technote8
Multitasking: forum.arduino.cc/index.php?topic=223286.0
gammon.com.au/blink - gammon.com.au/serial - gammon.com.au/interrupts

MarkT

Silent gears cost more, unfortunately.  Belt drive may be quieter.  But I agree, mounting directly on a soundboard
won't help!
[ I will NOT respond to personal messages, I WILL delete them, use the forum please ]

Johan_Ha

____________________

If you ask for help and write 'u' instead of 'you' because you think it's convenient, I will write 'no' instead of 'yes'. For same reasons.

MarkT

Lubricate the gears!
Much of the noise is carried through the metal, radiated from the soundboard, using grease
can reduce noise, but its not likely to cure the problem.  Grease is better than oil for this, but
reduces gear efficiency through viscous friction, especially at speed. 
[ I will NOT respond to personal messages, I WILL delete them, use the forum please ]

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