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:
Sep. 07, 2004
Filed:
Jun. 06, 2003
Hitachi, Ltd., Tokyo, JP;
Abstract
On a main shaft of a numeric control type machine tool, a rotary tool is installed. The main shaft is not inclined in the machine tool. A first member and a second member to be subjected to friction stir welding are fixed on a table . Relative to an axial center of the rotary tool , a non-linear welding portion of the first member and the second member is inclined by inclining the table . Then, by rotating the table and relatively moving the portion to be welded into contact with the rotary tool , welding of the first member to the second member is carried out according to friction stir welding. The above-stated inclination is the inclination required for the friction stir welding. In this way, welding along a path of ring shape or circular shape (including a circular arc) using friction stir welding can be carried out easily.