Robot program correcting apparatus

A robot program correcting apparatus which displays three-dimensional models of a robot and a workpiece simultaneously on a screen of a display apparatus, and corrects an operation program for said robot, comprising:

• touchup position storing means storing, as a plurality of points, an actual position located on said workpiece by actually operating said robot to touch said actual position on said workpiece that corresponds to a working position specified on said screen;
• touchup line or touchup surface computing means computing at least either a line or a surface based on said plurality of touchup points;
• working position storing means storing, as a plurality of points, position information concerning said working position on said workpiece displayed on said screen;
• robot operation program retrieving means retrieving said robot operation program based on said plurality of points stored in said working position storing means;
• working position line or surface computing means computing at least either a line or a surface based on a plurality of working positions designated by said robot operation program;
• difference computing means for computing a difference between at least either said line or surface computed from said touchup points and at least either said line or surface computed from points representing said working position specified on said screen;
• and
• correcting means for correcting said robot operation program by computing the amount of correction based on said difference.