The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 20, 2021
Filed:
Mar. 15, 2017
Grenzebach Maschinenbau Gmbh, Asbach-Baeumenheim, DE;
Markus Weigl, Donauwoerth, DE;
GRENZEBACH MASCHINENBAU GMBH, Asbach-Bäumenheim, DE;
Abstract
The invention relates to a method and a device for the residue-free friction stir welding of workpieces with different thicknesses, having the following method steps: a) two workpieces () to be welded are mounted such that the workpieces can be approached by a holding bell () for the friction stir welding tool and the drive head () thereof, b) after the welding device is started up, a welding pin tip () is immersed into the plastified material of the two workpieces () to be connected, wherein a welding shoe () is used which has a trapezoidal structure that extends in the diagonal direction of the welding shoe () for receiving the welding pin tip (), and a circular opening () is mounted in a web with a smoothing surface () which has a front edge () that is part of a stepped Spahn guide stage (), c) in order to improve the method, a welding shoe () is used in which the stepped Spahn guide stage () has material conducting channels on the front edge ().