Electronics > Projects, Designs, and Technical Stuff
DIY vibration tumbler fan keeps failing
(1/3) > >>
drummerdimitri:
So I've followed this YouTube tutorial to build a vibration tumbler:

It works great until I have to replace the fan after a week or so of constant use. It's a slow process to remove rust from small parts but the intense vibration either causes the fans to burn, break a blade or come right off   :-DD

I've decided to forgo the usage of a fan and was looking for some kind of purpose built vibration motor that can withstands the stresses and forces the poor fans had to endure.

Any ideas what I would need for this project? By trying not to spend 200$ on an actual vibration tumbler, I am finding myself getting closer in budget to what it would have cost me originally to just buy a real machine  :palm:
ledtester:
As it happens I've just been watching videos on DIY vibration tumblers!

Here's an idea which uses a DC motor with an offset weight - like how a pager vibrator works:

https://youtu.be/lXknqxaYgPY

Don't know what the longevity of such a design is... but at least you have more leeway in choosing your motor.

Conrad Hoffman:
That's a terrible design. Do it like the video above, but I'd use a more robust motor. Look at shooters brass "tumblers". We used to have a big expensive Sweeco vibratory at work and they provided a special grease to lube the bearings and a strict schedule on doing it. We didn't and that was the end of it. Pay attention to the location of the offset weight, the pivot point (the springs, sort of) and the mass to be vibrated. The less vibrating the motor does, the better, but the motor bearings always have to take the load.
drummerdimitri:

--- Quote from: Conrad Hoffman on August 16, 2019, 01:31:32 pm ---That's a terrible design. Do it like the video above, but I'd use a more robust motor. Look at shooters brass "tumblers". We used to have a big expensive Sweeco vibratory at work and they provided a special grease to lube the bearings and a strict schedule on doing it. We didn't and that was the end of it. Pay attention to the location of the offset weight, the pivot point (the springs, sort of) and the mass to be vibrated. The less vibrating the motor does, the better, but the motor bearings always have to take the load.

--- End quote ---

I also think a heavy duty motor with a counterweight is a better way to go. Only issue is how big should I get it? Also, what RPM/torque specifications should I be looking for?
ledtester:
Here's an implementation using a vacuum cleaner motor:

https://youtu.be/AJ6JOfOPQTQ

and one using a foot massager:

https://youtu.be/Vm2n8Py2qLc
Navigation
Message Index
Next page
There was an error while thanking
Thanking...

Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod