Method for determining the wear state

US9873994B2 · kind B2 · utility

Assignee

• Wirtgen GmbH

Inventors

• Stefan Wagner · Bad Honnef, DE
• Cyrus Barimani · Rübhausen, DE
• Günter Hähn · Rübhausen, DE

Key dates

• Filing date: Jul 7, 2014
• Grant date: Jan 23, 2018
• Expiry date: Mar 27, 2036

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N3/58
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

This invention relates to a method for determining a wear state of a chisel, a chisel holder, and/or a chisel holder replacement system equipped with a chisel and chisel holder. For this method to give the user qualitative and quantitative information about the wear, according to one embodiment of this invention, a position of at least one point of the chisel and/or the chisel holder is determined by a contactless measurement method and a corresponding measurement result is compared in a switching unit to a reference value stored in a memory device.