Friction stir welding tool
AssigneeGühring KG
InventorMatthias HELBIG
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Abstract
A friction stir welding tool (1), which has a specified direction of rotation and which has a base body (2) extending along an axis of rotation (3) and a conically tapered weld pin (10), which axially protrudes from a shoulder (4) on the base body (2) and the jacket surface of which is profiled by means of alternating conical surface sections (16) and flattened portions (14) and by means of a helical groove (20), which is coiled in the opposite direction to the direction of rotation from a weld pin tip (12) in the direction of the shoulder (4). The helical groove (20) runs out in a conical surface section (16) of the jacket surface of the wild pin (10).
Claims15
A friction stir welding tool, which has a specified direction of rotation and which has a base body extending along an axis of rotation and a conically tapered weld pin, which axially protrudes from a shoulder on the base body and a jacket surface of which is profiled by means of alternating conical surface sections and flattened portions and by means of a helical groove, which is coiled in an opposite direction to the direction of rotation from a weld pin tip in a direction of the shoulder, wherein the helical groove runs out in a conical surface section of the jacket surface of the weld pin.
Dependencies are inferred from the claim text.