Robotic 3D Printed Hand

This project is fresh and so developments are still being made, but having said that when have i ever been able to hold my projects away from everyone here: :laughing:

Project developed for (undisclosed client) to feature as part of their stall at The Web Summit this year.
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The design is to allow for almost full dexterity, but excludes the ability to widen or shorten the grip envelope. (side to side finger motion)

The Hand is designed to allow for minimum assembly 'having much of it printed in one go, interlocking the parts.

i will be adding the thumb this week and also the 3DOF wrist section.

Very nice! :smiley:
For the wrist, are you thinking of using some sort of ball socket-style joint?

The design of the metacarpals for the ring finger and pinky are quite different than other robotic hands… looks like it might provide much more realistic motion too.

akdabaous:
For the wrist i was thinking of using either “ball joint” or “direct point of rotation.” im still thinking on that one.

CBenson:

Yes im hoping the extra DOF will allow for the hand to cup or curl as our real hands do, allowing for more dexterity. also the exta DOF for the thumb is also added.

As you can see there is still the end of the thumb to model but you get the idea.

absolutely awesome keep the updates coming please!!! :mrgreen: :mrgreen: :mrgreen:

regards,
codemaster

Thank you… :smiley:
Still working on the wrist casing but need to configure the best way to actuate the wrist…?
I will be placing the hand on top of the same servo control tower i used for the Owl Project.
With the current design 'all 8 servos with in the casing will already be used up to actuate the fingers… so im thinking in order to get the wrist working i could add the servos either to the underside of the top plate on the servo control tower and use control rods, Or have the servos external using direct wrist control?

Also i may redesign the wrist as i feel the ball joint may restrict the control cables running into the hand.


Due to limited servos (up to eight) in the tower i have opted to combine some of the fingers (pinky and ring finger).

Also for the same reasons i have gone for the 1 DOF wrist (as originally intended by the client as they only require it to hand out business cards anyway, via manual loading)


ok so here is a small update:
The design for this particular project is finished.
This is the prototype finger with printed tendons…

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again ill be using a system i know works very well for this type of animatronic. … Mine. lol
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As always- nicely done. Do you have a wrist rotate?

If it was my choice i would have added a whole arm. :wink:
For its requirements 1dof is enough.

Its here. 8)
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Excellent for Halloween! Looking forward to see how you program it.

FrankenJonny…

Sweet! Looks great Jonny!

haha, thanks…

i531.photobucket.com/albums/dd355/innerbreed/2013-10-03181709.jpg

I guess we know who to call when we need a ‘hand’. :wink: :laughing:
Great work as always. ^___^ :mrgreen:

Looks fantastic, man! Great work.

Hey… what a nice servo cyclinder… :stuck_out_tongue:
Will be awesome in orange acrylic, lasercut…

btw: nice PC background too… LOL

Your the man for the job Eric. anytime you want to ship over an Orange laser-cut servos tower you know where i am. you have the design files so there is no excuse. :wink: (except you require the laser cutter)

yes one of my favourite VTail images. :wink: