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jmiller
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Re: A Solution looking for a Problem
jmiller   5/29/2012 8:10:45 PM
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I agree I don''t know that I see an application for an adaptable gripper.  But I do believe the ability of robots to pick up parts and hold them in place perhaps to be welded by another robot would be an application where this would be helpful.  But on the typical assembly line the job is going to be repetitive and follow the same steps again and again without having to adapt.

Tim
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Platinum
Pick points
Tim   5/29/2012 8:21:26 PM
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This technology seems to allow for a certain amount of forgiveness in the pick location for larger objects.  It would be great to have a cell that can easily adjust to different parts as they come down the assembly line.  This would allow for touchup free product changes.  That would be great.

ttemple
User Rank
Platinum
Is the glass half empty, or half full
ttemple   5/29/2012 9:15:35 PM
You can look at this and marvel at how far we've come, and you can look at it and marvel at how far we have to go.

Rob Spiegel
User Rank
Blogger
Re: Manipulators
Rob Spiegel   5/30/2012 11:35:48 AM
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That makes sense, Ann. The quality of the robot's ability to learn from trial and error is also a significant aspect of this development.

ChasChas
User Rank
Platinum
Hand
ChasChas   5/30/2012 12:26:57 PM
 

The human hand seems to be the model to mimic, but we still use tools - specialty grippers if you will. A totally universal gripper isn't there in nature either.

Logic is key. We can manipulate something a stick if needed, but of course much easier with the hand.

Ann R. Thryft
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Blogger
Re: A Solution looking for a Problem
Ann R. Thryft   5/30/2012 1:06:00 PM
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This gripper--which is not the main subject of the DN article--is not designed to pick and place small chips or other tiny objects on a high-speed line. The universal jamming gripper is a very different gripper designed to quickly grasp and release, or throw, a wide variety of object shapes. According to a FAQ
http://creativemachines.cornell.edu/jamming_faq_2
for an earlier IEEE article about this gripper by its inventors, not the algorithm which my article focused on, specific applications include "military robotics and improvised explosive device (IED) defeat missions; consumer and service robotics in unstructured environments like the home; and industrial and manufacturing robotics able to perform of a wider variety of gripping tasks than currently possible." According to that article, universal grippers can be used for sorting and throwing objects. One immediate use that comes to mind is end-of-line palletizing for non-fragile objects. A different (non-jamming) approach to universal grippers is shown here:
http://blog.robotiq.com/bid/29474/Universal-Gripper-Tooling-for-Pre-Engineered-Robotic-Cells

Ann R. Thryft
User Rank
Blogger
Re: A Solution looking for a Problem
Ann R. Thryft   5/30/2012 1:07:53 PM
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jmiller, you can see and hear about the inner workings of the gripper's ball--what makes it a jamming gripper--in the video linked to in the article.
The fact that the robot has to follow the same repetitive steps is secondary here: it's the fact that it may have to adjust those repetitive steps to different shaped objects, as stated in the article. That's what the algorithm teaches it to adapt to.

apresher
User Rank
Blogger
Odd Shaped Objects
apresher   5/30/2012 3:34:38 PM
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Ann, Good story.  These kinds of developments are important to continuing innovation.  Nothing like new ideas to keep things moving ahead. Maybe this can spur specific application developments.  Thanks.

Ann R. Thryft
User Rank
Blogger
Re: Odd Shaped Objects
Ann R. Thryft   5/31/2012 12:06:10 PM
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Thanks, Al. I enjoy reporting on R&D developments as well as already baked products and technologies. The R&D can stimulate all kinds of ideas.

Jack Rupert, PE
User Rank
Platinum
Re: A Solution looking for a Problem
Jack Rupert, PE   6/3/2012 5:16:18 PM
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Yes, Ann, the adaptation to different shapes is the key component of the algorithm.  I see two practical applications for something like that.  First, it gives the robot a much higher margin of error when moving a product.  If the product is not quite in the right orientation or has moved somewhat from where it it expected, the gripper can still get it (within reason).  The second application is if the product the robot is trying to grab gets redesigned.  A minor modification to it physical shape may not require as drastic of changes to the processes if the robot is still able to adapt to it.

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