COMPENSATING FOR ROBOT Z-AXIS INACCURACIES USING A SYSTEM NON-CONTACT MEASUREMENT
Original Publication Date: 1993-Jun-30
Included in the Prior Art Database: 2004-Apr-06
Xerox Disclosure Journal
Disclosed is a method for improving the accuracy of robotic movement in the vertical direction for robotic applications that require a fixed z-axis position throughout a sequence of robotic movements in a horizontal x and y plane. Since robotic components are temperature dependent and vary during movement in the horizontal plane (x and y axes), robot accuracy specifications do not apply to movements in the vertical direction (along the z-axis). Figure 1 exemplifies the resulting movements 1 or 2 in the vertical direction along the z-axis when a change in position along the x and y axes occurs.