Method for precisely measuring position of a part to be inspected at a part inspection station
US7796278B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 19, 2008 |
| Grant date | Sep 14, 2010 |
| Priority date | — |
| Expiry date | Dec 31, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B11/245
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for precisely measuring position of a part to be inspected at a part inspection station is provided. The method includes positioning a part having a part axis relative to a measurement axis at the part inspection station and scanning the positioned part with an array of planes of radiation so that the part occludes each of the planes of radiation over a measurement interval of the part to create a corresponding array of unobstructed planar portions of the planes of radiation. Each of the unobstructed planar portions contains an amount of radiation which is representative of a respective geometric dimension of the part. The method also includes measuring the amount of radiation present in each of the unobstructed planar portions to obtain measurement signals and processing the measurement signals to obtain a geometric measurement between the axes at the measurement interval. The geometric measurement may be a distance between the axes or angle between the axes. If the geometric measurement is outside an acceptable range of geometric values, the method may further include repositioning the part until the geometric measurement between the axes at the measurement interval is w…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.