Self made electromagnetic platform of machining center
Вставка
- Опубліковано 29 жов 2018
- DIY CNC electromagnet
For the first time, make a video. Will improve the effect later!
Machining centre electromagnetic suckers made from three microwave ovens transformers！
Power 12V
current 3~6 A - Навчання та стиль
![Самый сильный магнит в мире! [Veritasium]](http://i.ytimg.com/vi/CukwPhP_rG0/mqdefault.jpg)
![How to calculate an electromagnet of any power. All about electromagnets. [Education]](/img/n.gif)
Yours is the best. Thank you for all the work and the recording and the editing and the posting. I'll be making one for a drill press.
It works well but it’s way over engineered. I’ve made a lot of these so I’m posting this information to help others. No disrespect meant.
Three welds on each side and four on the bottom of the core was an unnecessary waste and actually made your magnet less efficient. Any welding of the laminated core should be kept to the absolute minimum as transformers use laminate metal pieces to reduce eddy currents that build up heat in the core which wastes power and reduces efficiency. That’s why the original welds are just enough to hold the laminates together. If you take more care removing the copper coils using a press you don’t need any welding as the core will stay in one piece. Welding the cores to the base is again a waste of time and effort and again interferes with the magnet’s performance. A drop of super glue to hold the cores in place is more than enough. Adding chopped mat fibreglass is unnecessary as the resin is more than strong enough. I add a thermal switch to the centre core to shut the power of if it gets too hot. Most microwave ovens have two of these so you can grab those as well when getting the transformer. An indicator light is also a good idea so you don’t leave it on when your finished. I’ve also added an original manual microwave timer ⏲ for one I made for a drill press so even if I do forget I can hear the ticking or it shuts off automatically when the timer goes off. None of this is rocket science and if using 12-24 volts is very safe and most of the parts are free. I hope this helps, cheers Stuart 🇦🇺
非常有意义的再制作
Nice work brother. Sure beats recycling the copper for a one time payout!
This project was a thing of beauty. In a manly way. Especially the face milling and surface grinding.
O(∩_∩)O~
Podoba mi się to wykonanie i ogólnie cały przekaz bardzo czytelny 👌🏻👍🏻👍🏻👍🏻 Brawo!
Did you use the primary or secondary windings? Great video.
Excelent work! LIKE IT, best regards from Brazil, Ary Prado
Great! Regards from Australia.
thanks for sharing excellent
For anyone worrying about eddy currents, don’t, he’s using DC.
Really extreme job super like 👍👍👍
Bravo de FRANCE!!!!!
Film OK and .....................NICE TRANCE :)
That was good, thanks!
Good job I like the cat makes my day .
much room for improvement, yes. A very interesting item to build which , appears to be reasonably sound in your effort. Does more coils not equal more strength of the magnetic response to a current? I give you the thumbs up, for the effort . I will be doing a lot of research and then try to build a very strong and dependable version.
Great job!!
Have you experimented with different coils and AC and DC current ?
Higher voltage can increase power. But security is not guaranteed!
That resin looks like it got very hot when curing, must have smelled great
It's very pungent
That's a really nice compound table on the mill. More info and videos of this your equipment officially requested.
OK
Do you think it would make the magnet any stronger if you used iron fillings/shavings, instead of fiberglass set in the epoxy resin?
It will affect the adsorption effect
Nice work
You should not weld the transformer cores. Have you ever wondered why they are laminated (and insulated)? It is done to reduce the formation of eddy currents inside the core and reduce the losses and the heat created in the core.
Transformatori od mikrotalasnih pećnica su uglavnom zavareni u fabrici. Prilikom rastavljanja transformatora, brusio je var da bi rastavio transfomator.
Did the switch on off work? If not what was the problem? Can you use just cables in resin and on off switch on outside 24v at 10 amps? Or 240 at 1 amp. What'd be too hot as saw different types and best voltage for 3 of these in series? Or 2 as 3 is bit too much but have 3 exact models that's meant to be good?. 12 volts 10 /20 amp or big 240 plug and full mains power to them in series?
Excellent work for machenical lovers
Very good!
Всё гениальное просто.! А простое гениально.!
Desde Argentina. Felicitaciones. Pregunta de principiante. ¿Que diferencia hay entre usar un transformador o dos? Muchas gracias.
IS Very Nice Very good fantastic 👍
How do you prevent your coils from getting hot?thank you for the video👍
That is the reason for using the LV side of the coil; it makes less heat
Que voltagem você alimentou os TR?
Why is the magnet not used in making concrete structures molds in buildings!!!!
Wait, by wielding the E-core are you not getting rid of the entire reason the core is laminated sheets? Does this not induce eddy currents in your setup? Or is this only in AC?
No, eddy currents are an issue with AC not DC
Hello, ... at what voltage is it supplied ... ??? .. 220v ... ??? ... thank you ... congratulations ... !!!
Have you tried a higher voltage? Also is the power supply current limited, or is that just what it draws naturally? Are you using a battery or a plug in power supply?
I'd be interested in testing this to see how much weight it can hold and then doing it with a variable power supply.
on another note, I wonder what would happen if you used the high voltage side and connected it to rectified 120vac (which would be about 170vdc). I'm guessing it would work the same, IDK if magnetism has more to do with current or wattage.
Yeah he dont understand English dude LOL Whatever you write he just gives a like and moves along :)
Just rectification will not do; you also need to filter them. But better is to connect the coils in series and use a higher voltage.
@@cocosloan3748 Moves along yea, he didn't give a like to yours though.
Hello brother 👌🔔💪🏻💪🏻💪🏻
nice work
Very nice.
5:55 можно было срезать магнитопроводы (сердечники), и потоньше была бы и мощнее !!!
Video is very good
Muy bueno.
Nice work, what chemical do you used to ceiled it?
Resin
Bueno, esos transformadores de hornos micro-hondas, pra hacer un electroiman de potencia, tiene varias apricacones, en un modesto taller, aqui para levantar peso.
Which coil did you keep the one with the big wires or the one with the Little wires
You need to retain the primary coil, the one connected to the mains supply, the secondary coil is the one that is used for the hv supply for the magnetron...
@@johnrudd9550 I asked my question in a manner in which I was hoping you would receive an answer it back to me in baby talk... as I do not understand which is the primary and whatever else you were saying. 1 coil is made from small wire and one coil is made from Big wire... which one do I keep the one made from the thick wire or the one made from the thin wire.....?
Ahh...sorry, in that case you need the thick wire wound coil for this project...usually it is the coil on the bottom...if that helps you...
The coil can indeed be considered for replacement. But the other coil of the microwave oven transformer is often broken. And the winding takes time.
Is there more strength if chopped down to primary coil or putting smaller slits on the top and pushing primary up so more surface area. Or cutting them down to primary coil height so it very low? Less steel? Air gaps? Asked previously but no school teachers or electromagnet workers answered! Best way to get most magnetic power from mot? Cut in half to primary? Leave and push primary to top with 2/3 mm cuts in i bar for surface area or take off i use as is?
Someone must be knowledgeable about this!
I truely love the informational/instructional videos on UA-cam. THIS MAKES UP FOR THE FAILURE OF THE US EDUCATION'S INEPTITUDE AND LACK OF USEFUL INSTRUCTION/EDUCATION....
I hope that this build gave you what you wanted... but I would not recommend welding the laminated steel core (like you did multiple times).. you see there is a reason that laminated steel is used.... the lamination allows the magnetic flux to travel better.. so you get a stronger electro magnet.....
Do you use 12volts input for the transformer? Interesting.
So the dude can like your comment like he read it but then completely avoid the entire question....lol
Because he read it but not understood
@@zbsbees6482 the question mark didn't give it away?? U sound like you might be his brother
ต่ออณุกรมหรือขนานครับแบบใหนดีกว่า
Ótimo trabalho
best regards,,,Éder Brazil
Éder S. Thank you
Belas máquinas.
How Voltase its work?
Best
😊👍🏻👏🏻👏🏻👏🏻
Hello. I used 12 volts and 12.5 currents. It got too hot after 20 minutes of operation. If I lower the current value, would I use it longer? Will I experience a decrease in my usage power? How much current should I use at most?
Try using 10 amps of current at 12v
I dont understand why the clamps are necessary?
What are the clamps for? (About 9:00 minutes)
To fix E-shape plates.
Yeah cause they apparently didn't work if they were meant to keep the magnets centered together
👍
Nice video, what is that white paste?
Chisco Garcia Gonzalez Silicon grease
I believe Thermal Paste makes more sense.
Why have to be used?
how many gauss,maxwell ,,,,or even Oersted's can help ,,,I need per square cm to left 1 kilogram ? ,give me the answer please,,, i need that to give to my student's on a science projects ,,i know the formulas but i"m to lazy to deal with math now ,
Nice cat🤣
How did you adhesive this
what is this gel
Looks like Epoxy or polyurethane resin with fiberglass reinforcement.
👍👍👍😀
I have a 12v charger cable rated for 14v 1am will this work?
Constant current is required. Otherwise, there is overheating
Hey how you doing?
I’m trying to check if there is any possibility that a magnet will push metal?
ezequiel skverer yeah it will but it’s kinda erratic. Wrap a coil around a nail and make a simple electromagnet
@@tomharrell1954 thank you very much for your comment, how can i contact you?
ezequiel skverer pharmacyman@att.net
@@tomharrell1954 i have send you an email
Nice video I do not understand the The wiring do you have any diagram of the wiring thank you
Coils in parallel 12V DC
Diagram
And video seven minutes and 10 seconds shows green and yellow wires are the green altogether and the yellows are all together
In english version, pls ??
Good job!
But for best magnetic performance, I thing that the magnetic sheets steel must not be welded together, they must be pressed together but not electrically connected.
Not really. The reason that transformers use laminated cores is to reduce eddy current losses in the transformer. But for a simple electromagnet? Not needed. The biggest change he could do to increase the holding force on the electromagnet would be to use DC instead of AC by using a rectifier. And once he's using DC, eddy currents are not a concern.
@@johncochran8497 I suspect that AC is used to keep from making the table permanent magnet. Just a guess.
@@jaspermcconnell6417 There are electromagnetic chucks that use either AC or DC. The main feature that is desired for either design is low retentivity for the core so that when power is removed, the chuck let's go. And, comparing both designs, the DC ones have a greater holding power than the AC varieties.
you are right, it would maybe run cooler if the power supply deliver pulsed DC (as opposed to DC from a battery f.ex.) In this video they use 12V 18Amp DC from a power supply I've never seen, so I don't know the specs on that one. It all depends on the width of the pulses etc. But if you use real DC it should not matter as others pointed out. In fact, then the field could be made 5-10% stronger with a massive, more pure iron core. The lamination he welds together(on the bottom) he takes away completely afterwards anyway, the ones on the sides stay and would produce more heat if use DC pulsed(like from a cheap switching transformer) or AC.
@@happyfox711 Isn't there a concern that the magnetic field lets go of the part with pulsed DC? I would think a constant current source would provide constant holding force, while AC and pulsed DC would have varying holding force.
I was thinking that the transformer cores could be cut down a bit less than halfway in order to make a shorter profile and not use up valuable operating space.
good
Bravo from Italia
QUERIDO, MT GRATO E PARABÉNS! ME TIRE UMA DÚVIDA POR GENTILEZA... TENHO ALGUNS TRAFOS DE MICROONDAS, UNS RECEBEM A CARGA DE 12V E MANTEM O MAGNETISMO... OUTRAS RECEBEM A CARGA E O MAGNETISMO DURA APENAS 3 SEGUNDOS E DEPOIS PERDE O MAGNESTISMO... PODE ME EXPLICAR POR GENTILEZA? MT GRATO!
umesto muzike mogao je nesto i da progovori , ako zna da prica ? koja je zaptivna masa ? u kom je odnosu katalizator ? , i jos ponesto ....
my English is poor. I will add subtitles in the future
Теперь сетевой провод строго беречь.
How much is the maximum magnetic force?
Safety considerations. Low voltage does not give full play to power
Manufacture quality very good, you might get mor magnetic force (probably double) if you add copper in between the air gaps, it blocks B force in air gap, hence much stronger Field on top surface if you fill air gap with copper bars (no magnetic short, all exposed on top)
Why do all MOT to Electromagnet videos use the thicker gauge winding and toss the thinner one? Electromagnet power comes from the number of turns, not the wire gauge.
Fault transformer, damaged secondary winding
Magnetic field strength is determined by number of windings (turns) and current. Larger gauge wire can handle more current due to lower resistance. Not sure which is more efficient though.
@@charetjcMagnetomotive force is a direct result of turns times the amps. So each contributes the same. It depends on the max amps a given wire gauge can handle. Still, you'd think given the usual 10x difference in turns, would be a 10X magnet strength gain and and the fact the coils end up getting potted in epoxy, it ought to be able to withstand a little overdriving - All that tells me you ought to be able to get a decent electromagnet at the max amp value. I suppose it depends on the specific case.
这又是数控铣床又是磨床的一般人克做不出这精度，还有为什么往树脂里加纤维 硬度不够吗？
William Liu 震动比较大
You would have a lot better luck with that TIG torch if you were to lead with the electrode instead of trailing with it.TIG will not penetrate properly and your weld cosmetics will suffer when you trail the electrode.
all I need now is to buy that LARGE MILLING MACHINE nd I'll be good
这些个工具要有个小机械厂才行。你自己有个小工厂吗？在广东
？
这个工作时是一直要用电的吧。
@@jameslu6115 是的。。。。断电会发生意外哦
1 6000watt mot. Or oven. Arc welder need advice on ballast. 10mm2 wire 5m to wind but unsure how to control amps.
brawo
👌👍👏👏👏👏👏⚘⚘
Everybody can do that at home
Hahaha. I'm only short a mill, a surface grinder, gallon of fiberglass resin and some time. Can probably find three identical transformers(not)
請問那個膠是什麼膠
李旭民 树脂
請問電要怎麼接？為什麼兩條綠色配一條黃。還有需要一台調壓設備是嗎？
@@gang0411 我使用的是12V直流。。这个看具体电流情况和发热情况。。。。
Interesting vid other than the music, ruins video's for educational purposes in my opinion.
Ok felicitari
Por que invierte los cables en la última unión?
Do you actually know how to use a TIG welder?
The item he was welding it extreamly magnetic, and not the most weldable of materials.. its hard to get the metal to stick to it..
Poor explaination of what is going on . Any new step should be explained and show the names of the materials used. Anyway, thanks gfor sharing knowledge. Regards.
FUTURE : ELETRO - MAGNÉTIC : MOTO -
PERPÉTUO : ( MOTOR-
ELÉTRICO : VAI - SER : FABRICADO : EM :
PRODUÇÃO : ATÉ :
ANO : 2030 :
( PRODUÇÃO - MASSA ) :
INDUSTRIAL - CERTA !!! ;
AVANÇO : INVENÇÃO :
HI - TEC : ELÉTRICO :
ELETRO - MAGNÉTIC :
MOTO - PERPÉTUO :
MOTOR - ELÉTRICO :
É ! : FATOS !!! : HOJE :
INVENÇÕES : DIVERSOS :
MODELOS : TIPOS ;
TAMANHOS : JÁ É ! ;
FATOS : COMPROVADOS !!! : NO :
MUNDO : HOJE :
2030 : FÁBRICAS :
FABRICANDO !!! :
( 2030 : MUITAS -
FÁBRICAS ) : 2030 :
FATOS .
"Self made" means that whatever is "self made" has been made or constructed by itself with no outside help or assistance by an outside agency. Generally speaking and as far as I am able to determine, there is no technology that enables something to make itself.... Just saying.
can i borrow it to blow my neighbors speakers from behind the wall? please?
invalid。
LOL. If it's a low quality speaker with bad shielding you could try to make a high power radio transmitter and by pointing a directional antenna to the speaker the interference could damage it. Just an idea.
هل ينتج عن هذا الجهاز حرارة خلال التشغيل الطويل وشكرا
из3х сгоревших предположим транса микроволновки )))
Great project. Horrendous music, whatever possessed you to use that monotonous music?
I will improve the future video
В общем молодец а добавь ещё по одной понижаюшей катушке и магнит вдва реза будет мощнее и смолы расходуеш поменьше.
Jaki jest prąd zasilacza?
13v 10a
respect