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Lego Axle Sorter [video]

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21–30 of 31 posts

Re: Lego Axle Sorter [video]

#21

Isn't there a simpler way to do this by lining up the mixed axles parallel to each other and then lifting the longest ones with a perpendicular bar? I recall seeing this mechanism in WWII archive footage. A factory worker came up with it and he was praised for improving efficiency.

Maybe less complex in terms of moving parts, but also sounds less space efficient.

Re: Lego Axle Sorter [video]

#23

I highly recommend that user's full channel: https://www.youtube.com/user/akiyuky/videos Akiyuky is apparently a process engineer in Japan, and posts impressive lego-based contraptions. A lot of of them are for GBC, or "Great Ball Contraption", a collaborative project to make lego modules whose sole purpose is to move standard lego balls from one point to another. You'll often see collections of these at lego convent…

Related, checkout matthias wendel who does woodwork and lego contraptions

Lego domino row building machine

https://www.youtube.com/watch?v=de4xdOVVROQ

Also, for other mechanical motions I really like watching thang

https://www.youtube.com/user/thang010146/videos

Re: Lego Axle Sorter [video]

#24

Earlier quoted context omitted.

Harder by orders of magnitude: https://jacquesmattheij.com/sorting-two-metric-tons-of-lego/

Why I've been meaning to build a "Lego Refractory" instead: a leaf blower at the bottom of a 10ft tall acrylic tube, with exit doors at various heights. It would sort Legos by their terminal velocity in free-fall.

Do it!!!

And film every single test run and failure. I would subscribe to this Patreon!!!

Re: Lego Axle Sorter [video]

#25
The sorting mechanism reminded me of the matrix sorter in the Linotype machine [1], in my mind still one of the most impressive mechanical achievements of all time.

Background: the Linotype allows you to type text on a keyboard, which is then automatically cast into lead slugs which can be directly used for printing. Oh, and it has optional automatic justification. It does all of this with 19th century mechanics. Here is one in action [2]. The casting mold is made up of small movable letters, called matrices [3], which have a 7 bit code at the top (made up of teeth). The matrices are then transported along a special distributor bar above the sorting bins until there are no corresponding teeth to hold them, at which place they fall down into the correct bin [4]

[1] https://en.wikipedia.org/wiki/Linotype_machine

[2] https://youtu.be/HEsAXZg-S04?t=24s

[3] https://en.wikipedia.org/wiki/Linotype_machine#/media/File:L...

[4] https://en.wikipedia.org/wiki/Linotype_machine#/media/File:L...

Re: Lego Axle Sorter [video]

#26

Earlier quoted context omitted.

Harder by orders of magnitude: https://jacquesmattheij.com/sorting-two-metric-tons-of-lego/

Why I've been meaning to build a "Lego Refractory" instead: a leaf blower at the bottom of a 10ft tall acrylic tube, with exit doors at various heights. It would sort Legos by their terminal velocity in free-fall.

I've tried just that but could not get it to work. If you manage to get it to work reliably this is likely the fastest mechanism you could make.

Some problems that you will run in to:

- the timing will need to be very precise

- you will likely need sensors before the stations

- Lego bricks come in all shapes and sizes and will respond unpredictably to air currents

- you will need a way to arrest momentum or they'll shoot right back out

Still, this is orders of magnitude faster than my contraption if you can get it work.

Re: Lego Axle Sorter [video]

#27
Nice. This is standard industrial feeder technology, done with Legos. Here's a commercial bowl feeder, which uses many of the same tricks.[1] Here's a discussion of the design principles.[2] You don't try to align the parts much; you just push or drop the misaligned ones back into the feeder for another try.

It's good that people are doing this. The US doesn't have enough production engineers, and stuff like this is how you learn that kind of job.

[1] https://www.youtube.com/watch?v=QsJzSFVAnhk [2] https://www.autodev.com/vibratory-feeder-bowl-orienting-part...

Re: Lego Axle Sorter [video]

#28

I highly recommend that user's full channel: https://www.youtube.com/user/akiyuky/videos Akiyuky is apparently a process engineer in Japan, and posts impressive lego-based contraptions. A lot of of them are for GBC, or "Great Ball Contraption", a collaborative project to make lego modules whose sole purpose is to move standard lego balls from one point to another. You'll often see collections of these at lego convent…

Related, checkout matthias wendel who does woodwork and lego contraptions Lego domino row building machine https://www.youtube.com/watch?v=de4xdOVVROQ Also, for other mechanical motions I really like watching thang https://www.youtube.com/user/thang010146/videos

That Matthias video takes me back - one of the first channels I ever subscribed to back in 2007 because of this cool wooden marble adding machine: https://www.youtube.com/watch?v=GcDshWmhF4A

Re: Lego Axle Sorter [video]

#29

I want a machine that could do this will all types of Lego. I've got a 25 lb box of Lego pieces in the garage I'd love to get sorted into little plastic bags.

Harder by orders of magnitude: https://jacquesmattheij.com/sorting-two-metric-tons-of-lego/

My family and I are working on just sorting my son's huge Lego collection into small and medium bins so that we can more quickly rebuild sets and so forth. It's a very hard problem just to come up with a taxonomy that we all agree on! There's not that much info available online, either. It's easy to think about, harder to create understanding among more than one person.

Formerly, we had been sorted by color into large bins. Now, we are working on sorting into sub bins by type. We are also separately sub-sorting dark gray and black by type and some by size while other colors can be combined without loss of speed in locating a part.

It's hard to explain, but our taxonomy is not as consistent as I would like it to be and it's not clear whether it will help overall or not. This is experimental.

Re: Lego Axle Sorter [video]

#30

this is so ironic, I was googling around this morning trying to find out how lego organizes and classifies different blocks. This was the first video that came up

My take is that Lego has intentionally created so many unique type of pieces that they have on purpose made it very difficult for less motivated people to make sense of what they have so thye will just go out and buy more sets and not worry about the mess.
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