Method for producing a ball stud
AssigneeAudi AG
InventorsSebastian Baier, Guido Fessel
Life of this patent
Estimating the term…
Abstract
Method for producing a ball stud with a joint ball and a shank, wherein the shank includes at least a neck region adjoining the joint ball and a fastening section opposite the joint ball, characterized by the steps: a) plastically shaping a semi-finished ball stud product; b) mechanically machining the semi-finished ball stud product; c) rolling the surface of the joint ball; d) thermochemically hardening the surface of the semi-finished ball stud product; e) removing the surface-hardened layer at least in the neck region and/or the fastening section; f) oxidizing the semi-finished ball stud product; g) polishing the joint ball.
Claims20
A method for producing a ball stud with a joint ball and a shank, wherein the shank comprises at least a neck region adjoining the joint ball and a fastening section opposite the joint ball, wherein:
- a) plastically shaping a semi-finished ball stud product;
- b) mechanically machining the semi-finished ball stud product;
- c) rolling the surface of the joint ball;
- d) thermochemically hardening the surface of the semi-finished ball stud product;
- e) removing the surface-hardened layer at least in the neck region and/or the fastening section;
- f) oxidizing the semi-finished ball stud product;
- and
- g) polishing the joint ball.
Dependencies are inferred from the claim text.