Process and device for producing hot-formed wheel naves

US10092944B2 · kind B2 · utility

Assignees

• ThyssenKrupp Steel Europe AG · DE
• thyssenkrupp AG · DE

Inventors

• Arndt Marx · Mettlach, DE
• Müller Christian · Lebach, DE
• David Pieronek · Dortmund, DE
• Axel Grüneklee · Duisburg, DE
• Markus Zörnack · Dortmund, DE

Key dates

• Filing date: Dec 15, 2014
• Grant date: Oct 9, 2018
• Expiry date: Sep 22, 2035

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/86
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A method for producing a wheel disk of a vehicle wheel may involve producing the wheel disk produced from a steel blank by hot forming. The blank may be at least partially hardened, preferably press-hardened, during or after the hot forming. The blank may be hot formed using at least one punch and at least one die, and at least one opening may be introduced into the blank using hot trimming means. At least one opening may be introduced during the hot trimming using at least one trimming bolt and an application bolt, wherein the application bolt may have at least one region having a cross-sectional shape that is variable in a longitudinal direction of the application bolt. Using the application bolt, the at least one opening may be calibrated via the variable cross sectional shape.