SCREW TIGHTENING METHOD FOR INDUSTRIAL SCREW TIGHTENING ROBOT

摘要

PURPOSE: To provide a screw tightening method by which high torque can be prevented when a work or a screw is seated by carrying out divided pattern control on a temporary tightening process to tighten the screw inward and an additional tightening process to additionally tighten the screw in an industrial screw tightening robot to carry out pattern control to tighten the screw firmly. ;CONSTITUTION: When an industrial screw tightening robot is started, it moves to a screw tightening point, and enters operation of a temporary tightening process. After operation of the temporary tightening process is finished, it judges whether a screw is seated or not, and when the screw is not seated, it outputs a screw tightening error. When the screw is seated, it enters operation of an additional tightening process, and tightens the screw further up to prescribed torque. Thereby, since it has divided pattern control of temporary tightening and additional tightening, self-judgment on tightening becomes possible, so that highly reliably and highly accurate screw tightening can be attained.;COPYRIGHT: (C)1994,JPO