Method for determining the lens grinding error and contour follower reading error to calibrating a lens trimming machine
US5660578A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 1, 1995 |
| Grant date | Aug 26, 1997 |
| Priority date | — |
| Expiry date | Feb 1, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/50063
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
To determine the reproduction error of a trimming machine associated with a contour follower device, a first reading is taken on the contour follower device from a template of known shape. A part is then machined on the trimming machine in accordance with the first reading. A second reading is taken on the contour follower device using the machined part. The reproduction error is deduced from the two readings by calculation. The method can be applied to autocalibration of a system comprising a trimming machine and a contour follower device associated with each other by way of a numerical controller, in particular for machining an eyeglass lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.