Damage and wear detection for rotary cutting blades
US7495759B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 23, 2007 |
| Grant date | Feb 24, 2009 |
| Priority date | — |
| Expiry date | Oct 23, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/151
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of detecting wear and damage to a rotary cutting blade for singulating a substrate is provided comprising the steps of providing a sensor to locate a first detecting position at an edge of the blade and performing dicing with the blade while the sensor is maintained substantially at the first detecting position for detecting damage to the blade. Subsequently, an extent of wear of the blade is determined by driving the sensor in the direction of the blade to locate a second detecting position at the edge of the blade as a diameter of the blade is reduced due to dicing. Thereafter, while dicing is performed with the blade, the sensor is maintained substantially at the second detecting position for detecting damage to the blade.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.