Invention Grant
- Patent Title: Method for producing a ball stud
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Application No.: US16618507Application Date: 2018-06-04
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Publication No.: US11300154B2Publication Date: 2022-04-12
- Inventor: Sebastian Baier , Guido Fessel
- Applicant: AUDI AG
- Applicant Address: DE Ingolstadt
- Assignee: AUDI AG
- Current Assignee: AUDI AG
- Current Assignee Address: DE Ingolstadt
- Agency: Maier & Maier, PLLC
- Priority: DE102017210976.9 20170628
- International Application: PCT/EP2018/064607 WO 20180604
- International Announcement: WO2019/001906 WO 20190103
- Main IPC: F16C11/06
- IPC: F16C11/06 ; B23P15/00

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.
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