String pulleys for robot arm mechanics

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This is where I am in the research for building a good, modular, robotic arm system with string pulley mechanics. I use 1/32 in stainless steel cable and aluminum crimp-beads to connect two pulleys.
I recommend printing them in the orientation they are in (even if you're inclined to lay them down ;-)
I also recommend printing them without supports -- though you may need to enable "bridge" settings for the open-air gaps.
Download the files from Thingiverse.
www.thingivers...

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13 сен 2024

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Комментарии : 15

@Renatunes Месяц назад

How are you planning to use this on the robots? You mount one of the sides to a motor? What king of motor and how do you do it? Would love to see your next steps. Great video!

@androofroo Месяц назад

I am using this pulley system in the wearable that I'm currently posting as "Doug" (the large yellow finger mounted on my shoulder). I've had to go through several iterations as I keep tearing up the pullys with all the force. Thanks for your comment 🤘

@exponentialvoid 3 месяца назад

Love this robust design.

@androofroo 3 месяца назад

Thanks! I love things that take a lickin' and keep on tickin'

@DanielSimu 6 месяцев назад

Love the hotglue cable coat idea!

@androofroo 5 месяцев назад

Hot glue is the best!

@thesimplicitylifestyle Месяц назад

Very helpful! Thank you so much! 😎🤖

@androofroo Месяц назад

my pleasure 🤘

@hallahgray3190 5 месяцев назад

After recently studying some of Leonardo da Vinci‘s inventions, I noticed that his automaton used pulleys and it seems that he had the right idea.

@androofroo 5 месяцев назад

Yeah that guy really was a terrific engineer

@freeee35 7 месяцев назад

A complicated process, but you made it clear 👍🏻

@NoidoDev 6 месяцев назад

Thanks. This is really interesting. Though, when I'm going to try this I will attempt to make the wheels smaller and maybe go with a double pulley (block and tackle) like here ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-M2w3NZzPwOM.html since I want the joints to be smaller.

@androofroo 6 месяцев назад

OMG I love Destin and SED! And yes you should totally try that. My one issue with making the wheels smaller is it makes it hard to pack that tensioning trolley inside. I'd love to see what you come up with.