Method and apparatus for non-contact determination of run-out of a rotating body

US4676648A · kind A · utility

Assignees

• Gebr. Hofmann GmbH & Co. KG Maschinenfabrik · DE
• Dr.-Ing.Wolfgang Schulz Messtechnik · DE

Inventors

• Wolfgang Schulz · Wunstorf, DE
• Gunther Himmler · Darmstadt, DE
• Gunter Knoll · Büttelborn, DE
• Friedrich Wenz · Seeheim-Jugenheim, DE

Key dates

• Filing date: Sep 26, 1984
• Grant date: Jun 30, 1987
• Expiry date: Sep 26, 2004

Classification

• Technology area (CPC G): Physics
• CPC primary: G01B11/2408
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method and an apparatus for determination of run-out of a rotating body, especially an automobile tire, without the need for mechanically contacting the rotating body. The apparatus includes a device for rotating the body, a scanning system with a transmitter for transmitting parallel rays directed toward the rotating body, a receiver to receive the residual rays not blocked by the rotating body, and an analyzer circuit for determination of variations in blockage on the basis of which run-out of the rotating body is determined.