Method for producing a threaded nut of a threaded drive, in particular a ball screw nut of a ball screw drive

US12007003B2 · kind B2 · utility

Assignee

• Schaeffler Technologies AG & Co. KG · DE

Inventors

• Mario Kreutzer · Sonneberg, DE
• Dieter Eckert · Fürth, DE
• Paul Heinz · Forchheim, DE
• Richard Baier · Dörflas, DE

Key dates

• Filing date: Jun 25, 2020
• Grant date: Jun 11, 2024
• Expiry date: Sep 15, 2040

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16H2025/2481
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A method for producing a threaded nut of a threaded drive, includes the following steps: a sleeve is produced from a steel sheet which is suitable for case-hardening; a rolling profile for a rolling contact with rolling bodies is molded on the inner circumference of the sleeve, said rolling profile being wound in a helical manner about the longitudinal axis of the sleeve; a flange is welded to the end face of the sleeve; the flange is provided with a welding surface on the flange end face facing away from the sleeve for welding to a machine part; the welding surface initially has a diffusion-inhibiting layer which inhibits the penetration of carbon; and the welding surface is exposed by removing the diffusion-inhibiting layer after case-hardening the threaded nut. A threaded nut produced according to the method can be part of a ball screw drive, the flange of which can be welded to a provided machine part by the user.