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Posted by Curt Welch on September 6, 2008, 1:19 am
> Joe Pfeiffer wrote:
> >> I want to use a vision system with industrial robot for assembling
> >> application.
> >> So the accurate TCP is very important for this application.
> >> Does anyone know some ways to teach a accurate TCP?
> > You must be using TCP in a way I'm not familiar with -- what are you
> > using it to mean?
> He means "Tool Center Point".
John, is there anything you don't know? :)
> The camera and the robot end effector aren't usually at the
> same position, and determining the distance between them to
> 0.001 or so is hard. See U.S. Patent #6,434,449 for a discussion.
> Usually, the answer is some kind of alignment target in the
> workspace, one that can both be seen and can sense the end effector
> A simple solution is a plate with a hole. The camera
> finds the hole, and moves the end effector carefully to the hole,
> then moves it around to touch the sides of the hole, which is wired to
> sense electrical contact.
> Fanuc calls this "TCPmate".
> John Nagle
--
Curt Welch http://CurtWelch.Com/
curt@kcwc.com http://NewsReader.Com/
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> application.
> So the accurate TCP is very important for this applition.
> Does anyone know some ways to teach a accurate TCP?