Patent ID: 9205533
Filing Date: 2015-12-08
Classification: B23K,B25B

Abstract:
1. A method of processing a first workpiece, including a first edge and a second edge, and a second workpiece, including a first edge and a second edge, the method comprising: constraining the second workpiece to be incapable of moving in a first direction along a surface; abutting the second edge of the first workpiece against the second edge of the second workpiece to form a joint; applying a first selectively adjustable force and a second selectively adjustable force against the first edge of the first workpiece to bias the second edge of the first workpiece against the second edge of the second workpiece; forming a butt weld by friction stir welding the first workpiece to the second workpiece along the joint; maintaining the first selectively adjustable force and the second selectively adjustable force equal to each other while friction stir welding the first workpiece to the second workpiece along the joint; and automatically varying at least one of the first selectively adjustable force and the second selectively adjustable force responsive to thermal size variations of the first workpiece and the second workpiece associated with friction stir welding the first workpiece to the second workpiece.