Shaft cone crown measurement system and methodology
US7920254B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 15, 2008 |
| Grant date | Apr 5, 2011 |
| Priority date | — |
| Expiry date | Sep 29, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B11/06
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Aspects include metrology methods and systems for determining characteristics of conical shaft portions, such as angle of taper and crown height. In an example, a metrology system includes a fixture for supporting a workpiece. The fixture provides for translation in a longitudinal dimension, and rotation about an axis of symmetry. The system may include a sensor mounted for scanning lines including sections of the workpiece as well as control logic for coordinating translation of the workpiece to provide for an approximately constant ratio of longitudinal translation and lines scanned during scanning operations. The system may include image logic for assembling an image from image data generated during each scanning operation, edge detection logic for detecting an edge shape in each assembled image, and slope and crown height calculation logic for calculating a slope and a crown height of each of the detected edge shapes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.