Method for the rapid detection of the geometric accuracy of the linear motion axis of an NC machine tool
US11125552B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 23, 2018 |
| Grant date | Sep 21, 2021 |
| Priority date | — |
| Expiry date | Nov 28, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B21/24
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A rapid detection method for the geometric accuracy of the linear motion axis of an NC machine tool, uses accelerometers to measure the acceleration perpendicular to the direction of motion when the linear motion axis moves at a uniform speed. Firstly, the measuring device is mounted on the linear motion axis, and the upper measurement system automatically performs multi-channel acquisition and storage of the motion point acceleration data. Then, filter the acceleration data at the different speeds. Finally, the displacement data is obtained by quadratic integration of the filtered acceleration data in the time domain. Then calculate the straightness of the linear motion axis using the End Point Fit method, and complete the rapid measurement of the straightness of the linear motion axis of the machine tool. This can realize the rapid measurement of the geometric accuracy of the linear motion axis of the machine tool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.