Apparatus and method for mobile friction stir welding of two tubular structures
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United States of America Patent
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Aug 4, 2020
Grant Date -
Jan 25, 2018
app pub date -
Feb 1, 2016
filing date -
Feb 6, 2015
priority date (Note) -
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Abstract
Disclosed are an apparatus and a method for the mobile friction stir welding of two tubular structures as joining partners, said apparatus having the following features: a) an annular main body (2) which can be unfolded using a hinge (4) and can be fixedly connected for operation opposite the hinge (4) using a locking mechanism (1); b) a plurality of lifting elements (3) which are distributed along the circumference of the main body (2), can be moved radially by a drive unit (5), and each include a retaining jaw (15) for securing the tubular structures, one retaining jaw (15) being mounted so as to be horizontally movable by a drive unit (6); c) a ring gear (21) which is connected to the main body (2) and on which a spindle head (11) can be moved by a drive unit (20) in an orbital movement about the tubular structures in order for a weld seam to be applied; d) a welding shoe (27) having a sliding surface (27) which is adapted to the curvature of the surfaces of the joining partners.
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