Society of Robots - Robot Forum

Electronics => Electronics => Topic started by: metroid2 on February 10, 2011, 05:43:10 PM

Title: robotic hand
Post by: metroid2 on February 10, 2011, 05:43:10 PM

Where can i buy a pair of good robotic hands. I am having trouble trying to look for one.

Title: Re: robotic hand
Post by: newInRobotics on February 10, 2011, 06:08:58 PM

Quote from: metroid2 on February 10, 2011, 05:43:10 PM

Where can i buy a pair of good robotic hands. I am having trouble trying to look for one.

Is it the gripper You are after or whole robotic arm?

Title: Re: robotic hand
Post by: metroid2 on February 10, 2011, 08:52:49 PM

yes i want the whole hand with fingers

Title: Re: robotic hand
Post by: newInRobotics on February 11, 2011, 02:34:36 AM

That is a gripper You are refering to. Actually a quite complex gripper that is not widely available to buy to my knowledge.
Your best bet is probably to make one yourself (not an easy task as well).

Have a look at this one: Mechanical hand (http://www.youtube.com/watch?v=KmERU5bPdaA#)

Title: Re: robotic hand
Post by: mstacho on February 11, 2011, 08:48:47 AM

In general, a fully functional hand doesn't exist for the hobby market.  The hands on the market that aren't two-fingered, pinch style grippers typically run in the many thousands of dollars range (I think that the Barrett Hand, a fairly common one, is somewhere around $11K).  This is due to the unfortunate fact that hands are really, really hard to build and control.  Now that being said, it's not impossible to build one -- I'm currently building one with three fingers, two links per finger, fully articulated at each joint, and controlled by an axon.  We have the first finger built and I'm doing control trials with it.

Since the topic comes up a lot here, I'm probably going to post the design.  It uses parts from solarbotics and an Axon for control, so it's not all that expensive (we're probably going to come in at around $400 CDN) but hands aren't cheap!

I'll keep you all posted once the hand itself gets built.  something tells me we're going to have some troubles along the way :-P

MIKE

Title: Re: robotic hand
Post by: billhowl on February 12, 2011, 04:11:37 AM

How about this "Cheap robotic hand"
(http://hackadaycom.files.wordpress.com/2010/10/ffcy7q.jpg?w=450&h=337)
http://hackaday.com/2010/10/07/cheap-robotic-hand/ (http://hackaday.com/2010/10/07/cheap-robotic-hand/)
http://letsmakerobots.com/node/22942 (http://letsmakerobots.com/node/22942)

[youtube]y2tXNkszbpM[/youtube]
Cheap robotic hand

Title: Re: robotic hand
Post by: newInRobotics on February 12, 2011, 09:15:47 AM

Quote from: billhowl on February 12, 2011, 04:11:37 AM

How about this "Cheap robotic hand"

That's quite good job as for hobbyist. However, it does not seam to be very functional. For some reason I've got an impression that metroid2 is after something more robust.