Apparatus and method to compensate bearing runout in an articulated arm coordinate measurement machine
US9488476B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 30, 2015 |
| Grant date | Nov 8, 2016 |
| Priority date | — |
| Expiry date | Apr 19, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B21/045
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for correcting errors in a bearing cartridge used in a portable articulated arm coordinate measurement machine (AACMM) is provided. The method includes providing a cartridge having a first bearing and a second bearing arranged in a fixed relationship to define an axis, the cartridge further including an angle measurement device configured to measure a rotation of a portion of the cartridge about the axis. A plurality of angles is measured with the angle measurement device. A first plurality of displacements is determined at a first position along the axis, each of the first plurality of displacements being associated with one of the plurality of angles. Compensation values are determined based at least in part on the plurality of angles and the first plurality of displacements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.