This project was awesome👍 it took some time but you got it at the end. Probably you don't need the protection for the chips not entering the motor, just make the motor turn in the other direction. As an accessory you can make a dressing tool for the wheel.
Dust from grinding shoots up in the air, it will land on the BLDC to do some damage. A dust cover for the motor is required. To improvise, a face mask is better than none.
its so cute but yuk, alloy. i would recommend using the cast iron XY tables you can get cheap. also a lesson in scraping them, though are surprisingly good for what they cost... throw in air cylinders for the X, and a fine thread or differential leadscrew for the Y. run ROUND section belt rather than teeth, back to back angular contacts for the spindle, and throw a decent flywheel onto the motor, a ring of brass or something pressed on. dont need acceleration, need steady speed. toothed belts make nasty harmonics. regular bearings arent really ideal for grinder spindles. its a nice "first version" to prove it...
That's a delightful little surface grinder. Why did you hog out that whole larger hole for the motor, though? Just making a loop would have been less cutting; it would have produced a small scrap from the center that didn't need to be touched by the cutter.
@@zhadlun I don't think you understand my question. The larger hole you milled out... you didn't need to mill the whole thing away. You could have just milled its outline and the center would have fallen out by itself, leaving exactly the same size hole but with less work and less wear and less swarf. Always try to shred the least metal you can to do the job. Within reason, of course.
I don't know but I saw your sparks curving into the back of the brushless motor. I hope that it won't hurt your motor, need to add a filter there or something?
Just my 5 cents. This is not how you surface grind. You should be advancing the stone into the material in such a way that only the tip of the grinding wheel does the grinding. What you are doing is just grinding with the whole thickness of the stone. Doing that bogs down the wheel and instead of sparks you're getting dust and shitty surface.
in bigger grinders they typically take more passes with shallower cuts to get better results(easier on the wheels), maybe adding a power feed would make it less tedious. you could also get a magnetic chuck to hold your parts to so you wouldn't need to reposition. Very cool project keep it up!
I had one as well. I need to be taken apart, cleaned and then reassembled and the gibs readjusted. It's not the greatest but that will greatly improve it. I have mine under a little drill press attachment for a Dremel tool and I use it as a little milling machine.
Very interesting project, but I wonder about the precision of this machine. Surface grinder without a certain level of accuracy loses the meaning of existence. Have you thought about how you will measure the accuracy and repeatability of your work?
I got two of these proxxons (different sizes, same principle). I find their sliding tables to be too imprecise with too much play. I could see myself doing this with a couple bearing blocks and linear rails though.
Not sure if you have a fine enough down feed. Normally a full size surface grinder only advances 50-125 micron at a time. Also the wheel should be dressed to the table after mounting. Tighten the gibs up, maybe fill the table with plaster or cement. I think you have some real potential with this project !!!! It turned out very nice
As you mention there are a lot of ways to improve this grinder and I could come up with a lot of reasons why this machine is not good at all. But then ... I have been wanting to build something like this since a very long time and I have not made anything yet 🤭 Let's just call this a proof of concept. It works and apart from not getting the best results; it beats grinding by hand. Very well done !
Задняя часть вала шпинделя показалась слишком длинной без поддержки, я не специалист, но мне кажется, что если шкив ближе к подшипнику, меньше нагрузка на вал, ведь подшипники вала как я понял без регулировки натяга
Watch out for grinding dust, that motor is sucking it straight in. fan cooled brushless motors won't survive long, more accurately the esc will fry wheel it goes.
Gou might be able to make the table better by adjusting its gibs, if adjustable, or making the 'bearings' of the table adjustable ... for someone else doing a project like this, you might be able to get a used compound slide from a lathe, which will be 'stiffer' than that little proxon table, and would have adjustable gibs, to improve its stiffness and precision. a small diamond stone would be better than a cheap 'grindstone', especially considering the value of good parts done on such a device.
sáng tạo hay mong bạn da nhiêu video nưa nhé và cùng nhau phát triển nhé Let's be creative and hope you make many more videos and let's develop together
Take the table apart, clean it and adjust the gibs. I have the same table. That greatly improved it.
This project was awesome👍 it took some time but you got it at the end. Probably you don't need the protection for the chips not entering the motor, just make the motor turn in the other direction. As an accessory you can make a dressing tool for the wheel.
Nice one , safety is important, provide wheel guard
Dust from grinding shoots up in the air, it will land on the BLDC to do some damage.
A dust cover for the motor is required. To improvise, a face mask is better than none.
mount the bldc up is better than left. the fine dust will kill the bldc soon...😊
its so cute but yuk, alloy.
i would recommend using the cast iron XY tables you can get cheap. also a lesson in scraping them, though are surprisingly good for what they cost...
throw in air cylinders for the X, and a fine thread or differential leadscrew for the Y.
run ROUND section belt rather than teeth, back to back angular contacts for the spindle, and throw a decent flywheel onto the motor, a ring of brass or something pressed on. dont need acceleration, need steady speed. toothed belts make nasty harmonics. regular bearings arent really ideal for grinder spindles.
its a nice "first version" to prove it...
That's a delightful little surface grinder. Why did you hog out that whole larger hole for the motor, though? Just making a loop would have been less cutting; it would have produced a small scrap from the center that didn't need to be touched by the cutter.
There is 2 reasons. One is motor has ~9mm c-ring near a shaft. Second is to use different belt sizes.
@@zhadlun I don't think you understand my question. The larger hole you milled out... you didn't need to mill the whole thing away. You could have just milled its outline and the center would have fallen out by itself, leaving exactly the same size hole but with less work and less wear and less swarf.
Always try to shred the least metal you can to do the job. Within reason, of course.
@@timhofstetter5654 got a point, you are right
Nice idea. I can see the stone is not true to the table. With a diamond you can make the stone parallel to the table.
This micro surface grinder is totally awesome. Great project, well worth looking into.
Its so cute!
I don't know but I saw your sparks curving into the back of the brushless motor. I hope that it won't hurt your motor, need to add a filter there or something?
Pretty cool grinder!
Just my 5 cents. This is not how you surface grind. You should be advancing the stone into the material in such a way that only the tip of the grinding wheel does the grinding. What you are doing is just grinding with the whole thickness of the stone. Doing that bogs down the wheel and instead of sparks you're getting dust and shitty surface.
in bigger grinders they typically take more passes with shallower cuts to get better results(easier on the wheels), maybe adding a power feed would make it less tedious. you could also get a magnetic chuck to hold your parts to so you wouldn't need to reposition.
Very cool project keep it up!
Для папуасов в шалаше пойдет
How are the ways on that little mini mill bed? If they aren't that great won't it be tough to hold anything flat and parallel with it moving all over?
it's aluminium, it sucks (i had one of those) it does not move easy though.
I had one as well. I need to be taken apart, cleaned and then reassembled and the gibs readjusted. It's not the greatest but that will greatly improve it. I have mine under a little drill press attachment for a Dremel tool and I use it as a little milling machine.
Well ain’t that the cutest little surface grinder you ever seen. Can you make me one while you’re at it? 😊
Nice work, maybe a good idea to add some coolant on top
with linear slides the precision might be better. Dressing the stone with a diamond mounted on the table will give better results. Great projoct
Rectangular linear slids are less accurate than good dovetails are.
Very nice, just take care about protect "y" axis guide because if the abrasive scratch the anodice the table if off.
Very interesting project, but I wonder about the precision of this machine. Surface grinder without a certain level of accuracy loses the meaning of existence. Have you thought about how you will measure the accuracy and repeatability of your work?
Это имитация. Точности на китайских компонентов из алиэкспоесса нет
The precision would be possible only with another table. Unfortunately this aluminum proxxon is too bad...
It's a beautifull job👍🥰 i leave a 👍and subscribed in your channel.
Get a diamond dresser for the stone
Good work
I got two of these proxxons (different sizes, same principle). I find their sliding tables to be too imprecise with too much play. I could see myself doing this with a couple bearing blocks and linear rails though.
If I will continue project, first thing I will replace, is this table. And yes, linear rails very good possible option.
ऐसामीनी गाईडीग मूजे चाहिए
Not sure if you have a fine enough down feed. Normally a full size surface grinder only advances 50-125 micron at a time.
Also the wheel should be dressed to the table after mounting.
Tighten the gibs up, maybe fill the table with plaster or cement.
I think you have some real potential with this project !!!! It turned out very nice
As you mention there are a lot of ways to improve this grinder and I could come up with a lot of reasons why this machine is not good at all.
But then ... I have been wanting to build something like this since a very long time and I have not made anything yet 🤭
Let's just call this a proof of concept. It works and apart from not getting the best results; it beats grinding by hand. Very well done !
6:05 Add the solder to the joint, not the tip. All your flux burned off in the first 2 seconds and your joint was dry and cold like all hell
Loved it wow.
Задняя часть вала шпинделя показалась слишком длинной без поддержки, я не специалист, но мне кажется, что если шкив ближе к подшипнику, меньше нагрузка на вал, ведь подшипники вала как я понял без регулировки натяга
Отлично, абразив вместе с металлом летит прямо в двигатель)))
Watch out for grinding dust, that motor is sucking it straight in. fan cooled brushless motors won't survive long, more accurately the esc will fry wheel it goes.
Awesome , Consider Attaching a Dresser The Ground Surfaces My Be Much Accurate
Witam z Polski super projekt oczywiście zostawiam suba i łapkę w górę pozdrawiam udanego projektu
Gou might be able to make the table better by adjusting its gibs, if adjustable, or making the 'bearings' of the table adjustable ... for someone else doing a project like this, you might be able to get a used compound slide from a lathe, which will be 'stiffer' than that little proxon table, and would have adjustable gibs, to improve its stiffness and precision. a small diamond stone would be better than a cheap 'grindstone', especially considering the value of good parts done on such a device.
still a lot of stuff could be improved. And a table definitely one of them.
Very Nice!
Dress the stone! Make a new table
Mike
You need a wipermotor to drive the Table...
Dc motor body also magnetizes metal powder.
sáng tạo hay mong bạn da nhiêu video nưa nhé và cùng nhau phát triển nhé
Let's be creative and hope you make many more videos and let's develop together
Try to push some precision, it can continute to be funny project)
Nice
ऐसा मीनी गा
Omw to make it
Норм, шифера нет на более длинных деталях?
Strong russian accent...
и что?
Ножи для ледобура и мясорубки шлифовать самое то.
Нужен кожух для двигателя, на магниты стружка прилипать будет.
Хорошая,но бесполезная игрушка.жЖаль потраченого времени и денег.
Verry verry good