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In this viveo I show you how to make Homemade grinding machine for precise work. This sharpening machine will help you do precision work. I applied the motor from the washing machine. This high speed motor with speed regulation and stabilization.
https://www.youtube.com/watch?v=oze8OAAm8GU
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Here are quality photos https://photos.app.goo.gl/8go6m16Zqi6h1QAA7
That's nice build mate!
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That is a nice tool
I could see that being very useful! I've already got a few good idea's in my head now... lol
Excellent design and fabrication, sir.
Nice little arbor grinder much better than trying to use a chop saw
Great, subscribed. Where did you get the regulator for the motor? I'm gonna make mine but if there is something ready I will go for buy instead of DIY.
I made it myself according to this scheme
Attachment 32560
Nice, I love the simplicity of the circuit. It will start the motor from a shelf of around 60V and the feedback is not as precise as what would be achieved with an opamp but its simplicity is a plus, congratulations for your design.
I have a bunch of digitally controllable dimmers (10A 240V) so my idea was to control one of them with a couple of opamp and a comparator to pick up the feedback from the alternator (used as tachometer) usually found in washing machine motors or to pick up a simple encoder (just made with a hall sensor or a photocoupler and a cogwheel) for any universal motor that do not come with a pre-installed alternator/tachometer. This would be a very versatile circuit capable to provide good speed regulation. Since I can't find this kind of drivers on the market I thought it could be of interest for others because universal motors are ubiquitous and a cogwheel+hall sensor or a simple low resolution encoder disc are really easy to add and cheap.
There is a better scheme https://www.drive2.ru/b/469279260389933445
That circuit is a beauty, too bad the TDA1085 is no longer in production and nearly impossible to find.
I also found things like this one:
https://www.banggood.com/220V-AC-Spe...r_warehouse=CN
but a friend of mine tested one of these regulators and noticed that have a really poor gain so the motor drops speed when under load by approx. 10%. Also it doesn't work if an encoder signal is provided instead of a tacho generator.
I know this stabilizer.
There are these TDA1085 on aliexpress
https://ru.aliexpress.com/item/33010...chweb201603_55
