The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 08, 2008
Filed:
Jun. 15, 2005
Axel Bader, Friedberg, DE;
Sven Hansen, Berstadt, DE;
Steffen Schmidt, Aalen, DE;
Kim Henrich, Gelnhaar, DE;
Axel Bader, Friedberg, DE;
Sven Hansen, Berstadt, DE;
Steffen Schmidt, Aalen, DE;
Kim Henrich, Gelnhaar, DE;
ABB Patent GmbH, Ladenburg, DE;
Abstract
A method measures the backlash at an axial joint of an industrial robot having a first and a second robot knuckle that are movably connected to each other in a direction of rotation by the axial joint. A load-transmitting device applies a predeterminable force alternately in a measuring line to the first robot knuckle, connected to the free end of a robot arm. A deflection sensor measures the deflection of the first robot knuckle at a predetermined distance from the axis of rotation of the axial joint, and an evaluation device connected to the displacement sensor calculates a turning angle of the first robot knuckle as a measure of a backlash present at the axial joint, taking into account the geometrical arrangement data in the measurement of the deflection sensor and the industrial robot and also the measured deflection.