Browse Prior Art Database

MINIMUM SETUP TIME ROBOTIC ACCURACY MEASUREMENT SYSTEM

IP.com Disclosure Number: IPCOM000006832D
Original Publication Date: 1993-Jun-01
Included in the Prior Art Database: 2002-Feb-06

Publishing Venue

Motorola

Related People

Authors:
Barry Groman Scott Potter

Abstract

Robot accuracy is becoming increasingly important as factory automation moves towards CAD data driven systems and component placement requires tighter tol- erances. In order to insure that a robot performs within specitlcations, a qu&liable measurement of the mechan- ical accuracy as the robot travels through the work enve- lope must be made. The most precise instrument avail- able to measure robot accuracy is a laser interferometer system. The laser interferometer system measures positional accuracy via the use of a laser head and a set of two optics, the retro-reflector and the reflecting mir- ror. Traditionally robot characterization with this equip- ment would entail complicated alignment of the laser beam and optics to the robot's travel. The current pro- cedure for measurement of robot accuracy is the foUowing: Setup: 1) Assemble tripod and mounting bracket for laser head. 2) Mount laser head to tripod. 3) Remove robot end-effector and mount reflecting mirror.