Method of non-destructive testing a cutting insert to determine coating thickness
US10502550B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2016 |
| Grant date | Dec 10, 2019 |
| Priority date | — |
| Expiry date | Dec 21, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K2103/166
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method for non-destructive testing a cutting insert to determine coating thickness id disclosed. The method includes the steps of using a source of electromagnetic energy to ablate a surface of the cutting insert to non-destructively form a geometric feature and expose the substrate and each layer of the coating; and measuring the thickness of each layer of the coating. In one example, the geometric feature is a groove with a generally trapezoidal shape. In other examples, the groove can have a U-shape, V-shape, and the like. The thickness of each layer of the coating is determined using focus variation, contrast detection, confocal microscopy, an interferometric microscopy, an imaging interferometric microscopy, or similar technique.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.