How to teach a accurate TCP for industrial robot?

Hello,
I want to use a vision system with industral robot for assemblying application. So the accurate TCP is very important for this applition.
Does anyone know some ways to teach a accurate TCP?
Thank you.
bruce
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

You must be using TCP in a way I'm not familiar with -- what are you using it to mean?
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Joe Pfeiffer wrote:

He means "Tool Center Point".
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
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

John, is there anything you don't know? :)

--
Curt Welch http://CurtWelch.Com /
snipped-for-privacy@kcwc.com http://NewsReader.Com /
  Click to see the full signature.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Curt Welch wrote:

I had to look it up, but I've had to deal with robot manipulator calibration. You usually need something in the workspace that can be used as a reference point.
                    John Nagle
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Thanks -- it was indeed a meaning of TCP that this computer geek wasn't familiar with!
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Polytechforum.com is a website by engineers for engineers. It is not affiliated with any of manufacturers or vendors discussed here. All logos and trade names are the property of their respective owners.