Use of a diamond layer doped with foreign atoms to detect the degree of wear of an undoped diamond function layer of a tool

US10974360B2 · kind B2 · utility

Assignee

• Guehring KG · DE

Inventor

• Immo Garrn · Ertingen, DE

Key dates

• Filing date: Sep 12, 2019
• Grant date: Apr 13, 2021
• Expiry date: Sep 12, 2039

Classification

• Technology area (CPC G): Physics
• CPC primary: G05B2219/37256
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A first diamond layer made of polycrystalline diamonds and doped with foreign atoms, is arranged on a metal surface of a machining tool, and is used to detect the degree of wear of an undoped polycrystalline second diamond layer, which is arranged on the doped diamond layer and forms a functional region of the machining tool, wherein at least one physical parameter is detected continuously or periodically during operation of the tool, and wherein a change in the parameter indicates the degree of wear of the undoped second diamond layer. The doped diamond layer forms an “intelligent stop layer” for the tool because as a result of change in the transition from the undoped to the doped layer, the conductivity of the system changes, for example, and this change can be used to form a stop signal for the machine drive before the tool and the machined workpiece are damaged.