US 11,883,901 B2 · Device and method for increasing the speed and increasing the stability of the welding pin in friction stir welding

Abstract

The invention relates to a device and method for increasing the speed and increasing the stability of the welding pin in friction stir welding with the following device features: a) a tool drive (1) has a retaining flange (2) for a cone-shaped tool cover (3) with a union nut (4); b) an annular retaining ring (12) surrounds a pin shank (6) with a tool shoe (7) secured to the diameter of the retaining ring (12), wherein the tool shoe (7) has a smoothing and compressing surface (11) in the region of the pin tip (10) for smoothing the weld seam, wherein the pin shank has the width of the tool shoe (7); c) the pin tip (10) has an annular friction surface (9) which surrounds a screw conveyor (8) for the output of material transport from the pin tip (10), which has a thread running in the opposite direction to the thread of the pin tip (10).

Claims6

Dependent claims

A welding shoe, comprising:

a pin shank configured to be attached to and driven by a tool drive and including a conveying screw within a ring-shaped annular friction surface, and a pin tip;
and
an annular retaining ring configured to be attached to the tool drive and surround the pin shank and including a tool shoe, wherein
the tool shoe projects from the annular retaining ring and includes a concave portion that abuts the ring-shaped annular friction surface and a smoothing and compacting surface that is located directly adjacent to the ring-shaped annular friction surface when the pin shank and the annular retaining ring are attached to the tool drive.

1 more element

Dependencies are inferred from the claim text.

Device and method for increasing the speed and increasing the stability of the welding pin in friction stir welding

Life of this patent

Device and method for increasing the speed and increasing the stability of the welding pin in friction stir welding

Life of this patent

Abstract

Claims6