Numerically controlled machine tool and numerical control device
US8680806B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 29, 2010 |
| Grant date | Mar 25, 2014 |
| Priority date | — |
| Expiry date | Dec 18, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/50297
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A numerically controlled machine tool has a linear and rotational feed and has functions for measuring in advance, errors of a relative position and a relative attitude of a main spindle relative to a work table by positioning the linear and rotational feed axes to specified position and attitude, and correcting a movement command based on measured error data, the data being multi-dimensional data containing a position error and an attitude error. The machine tool includes a error data storage means which store an error map prepared by collecting a plurality of the error data corresponding to positions and rotation angles of the linear and rotational feed axes, and a correction data computing means which compute correction data for correcting movement command from a command position for the linear and rotational feed axes and the error data stored in the error data storage means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.