Position error correction equipment
US4502108A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 1982 |
| Grant date | Feb 26, 1985 |
| Priority date | — |
| Expiry date | Jun 29, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/49196
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Position error correction equipment with which it is possible to perform a backlash correction or a pitch error correction with a high degree of accuracy even if the state of a numerical control machine tool, for instance, temperature, varies. Error correction data groups predetermined by measurement in respective states of the numerical control machine tool are stored in an error storage circuit (MEM) corresponding to the respective states. An error correction data selecting circuit (MPX) selects an error correction data group corresponding to a particular state of the numerical machine tool from the error correction data groups stored in the error storage circuit (MEM). A position correcting circuit (CPG) carries out a position correction by adding a correction pulse to a command pulse or feedback pulse from a position detector through utilization of the error correction data group selected by the error correction data selecting circuit (MPX).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.