Tool for roughening a metallic surface
AssigneeAudi AG
InventorPeter Kopton
Life of this patent
Estimating the term…
Abstract
A roughening tool for roughening a metallic surface of an inner wall of a pre-drilled workpiece bore is disclosed. The roughening tool has a profiled contour provided between the tool clamping shaft and the tool tip. With this contour, a roughened structure can be produced through rotation of the tool by processing the metallic surface in a material removing or non-material removing manner The roughening tool includes at least one profiled web which extends along the tool axis, protrudes from a main tool part, and on whose outer web back the profiled contour is provided.
Claims18
A roughening tool for roughening a metallic surface of an inner walling of a pre-drilled workpiece bore, said roughening tool comprising:
- a profiling web protruding from a base body of the roughening tool and extending along an axis of the roughening tool, said profiling web having an outer web back provided with a profiling contour extending between a tool tip of the roughening tool and a mounting shaft of the roughening tool, said profiling web ending at the tool tip of the roughing tool with a groove blade, which is oriented transverse to the axis of the roughening tool,
- said groove blade being adapted to enable insertion of the roughening tool into pre-drilled workpiece bore with an axial lift movement, and during said lift movement to form a profiling groove in the inner walling of the pre-drilled workpiece bore, said profiling groove extending along the longitudinal axis of the core bore,
- said profiling web being adapted to engage in the profiling groove and through rotation of the roughening tool to generate the roughened structure by material-removing or non-material removing processing of the metallic surface of the inner walling of the pre-drilled workpiece bore, when received in the profiling groove and upon rotation of the roughening tool.
A method for roughening a metallic surface of an inner walling of a pre-drilled core-bore of a workpiece, said method comprising:
- providing a roughening tool which comprises a profiling web protruding from a base body of the roughening tool and extending along an axis of the roughening tool, said profiling web having an outer web back provided with a profiling contour extending between a tool tip of the roughening tool and a mounting shaft of the roughening tool, said profiling web ending at the tool tip of the roughing tool with a groove blade, which is oriented transverse to the axis of the roughening tool;
- in a pre-processing step inserting the roughening tool into the pre-drilled core bore of the workpiece in an axial lift movement, and during the axial lift movement forming with the groove blade a profiling groove in the inner walling of the core bore, said profiling groove extending along an axis of the core-bore;
- and
- in a final processing step, with the profiling web of the roughening tool being arranged in the profiling groove, rotating the roughening tool, whereby the profiling web processes the metal surface in a material removing or non-material removing manner thereby generating a roughened structure.
Dependencies are inferred from the claim text.