Workpiece holding method

Abstract

It is an object of the present invention to provide a workpiece holding method which enables a workpiece to be held when a multi-fingered hand is used to grasp the workpiece that is in an untidy heap, even if a target workpiece is subject to interference from another workpiece, and thereby the method enhances the success rate for holding the workpiece. A workpiece holding method, when two holding devices (first to fourth fingers F1 to F4) are used to hold a workpiece (reinforcement W), including a unilateral holding process of inserting a first holding device (the first finger F1 and the second finger F2) at one holding device insert position (region A) to hold and lift a workpiece-to-be-held (reinforcement-to-be-held T) in a state where the workpiece-to-be-held has no interference from any other workpieces at the region A, and a bilateral holding process of inserting a second holding device (the third finger F3 and the fourth finger F4) around (region D) the workpiece-to-be-held lifted by the first holding device, to hold the workpiece-to-be-held.

Dependencies are inferred from the claim text.