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View Full Version : Dual Axis joint using AX-12s?



guruguhan
11-27-2013, 04:40 PM
Hello,

I would like to create a dual axis joint, similar to this one (http://www.trossenrobotics.com/p/custom-ex-106-dual-axis-robot-joint.aspx), but instead of using EX series Dynamixels, I'd like to use AX-12 servos. Is there a pre-fab set of frames for this configuration, or, just as Trossen did with the EX, will I need to custom make the frames?

kamondelious
11-27-2013, 06:44 PM
Why not reference any of the AX-12 kits? They all use the same sort of design using standard AX series frames.

Take a close look at the ankles in the pictures here :
http://www.trossenrobotics.com/p/bioloid-premium-robot-kit.aspx

Or do a google image search for bioloid.

;)

jwatte
11-27-2013, 08:13 PM
Sounds like approximately frames F4 and F5?
http://www.trossenrobotics.com/store/p/6182-Bioloid-Frame-F4.aspx
(http://www.trossenrobotics.com/store/p/6182-Bioloid-Frame-F4.aspx)http://www.trossenrobotics.com/store/p/6183-Bioloid-Frame-F5.aspx

Y (http://www.trossenrobotics.com/store/p/6183-Bioloid-Frame-F5.aspx)ou'll probably need a third bracket on the side of the crosswise servo to serve as an idler for the yon end of the F5 bracket; I don't know exactly which bracket that is, but I presume it's another one in the F series. Perhaps F7 + BU/WA?

guruguhan
11-27-2013, 08:48 PM
Why not reference any of the AX-12 kits? They all use the same sort of design using standard AX series frames.

Take a close look at the ankles in the pictures here :
http://www.trossenrobotics.com/p/bioloid-premium-robot-kit.aspx

Or do a google image search for bioloid.

;)

Oooohh I feel dumb. Looked at all the other PhantomX kits...why on earth I didn't look at the most likely kit to use a joint like that...I don't know.

Thanks!

tician
11-27-2013, 11:01 PM
It is usually two servos connected together with a pair of F6 and stuffed in an F5 with an F7 and bushing (no washer). One of the servos controls the rotation of both within the F5, and the other servo is connected to an F4 with a bushing and washer. A third servo can be added to the assembly as in a bioloid humanoid hip.