Patent ID: 6849820
Filing Date: 2005-02-01
Classification: B21D,B62D

Abstract:
1. A preliminary assembly system for joining a body side panel and a floor panel as component parts of a body of an automotive vehicle in a loose-fit hemming joint state by bending a claw piece extending from a main body of one of the panels to hold the other of the panels so that the panels are joined to each other in a condition having a freedom in relative location between the panels, prior to joining of the panels under welding, said preliminary assembly system comprising: a die which is to be in contact with a back-side surface of the main body of one of the panels in a region forming a loose-fit hemming joint section, the back-side surface being opposite to a front-side surface of the main body facing the other of the panels; and a main bending blade which is movable to approach the die to bend the claw piece of the one of the panels until the loose-fit hemming joint state is established; wherein the preliminary assembly system is adapted to move the main bending blade to approach the die by a movement amount which is mechanically determined relative to a first surface of the other of the panels during formation of the loose-fit hemming joint section when the other of the panels is located between the main body and the claw piece of the one of the panels and the first surface is facing the claw piece in a bent state.