Diamond turning method for high-precision metal mirror
US4561333A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Feb 24, 1983 |
| Grant date | Dec 31, 1985 |
| Priority date | — |
| Expiry date | Feb 24, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T82/10
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
High-precision turning of a metal mirror is accomplished by causing a measuring beam to be reflected on a freshly turned area of the reflecting surface to be formed in a metal blank being turned to produce a metal mirror and, at the same time, causing reference beams to be reflected on areas turned prior to the aforementioned freshly turned area, measuring the positions of incidence of the resultant reflected beams on a position detection device thereby performing the Hartmann test on the aforementioned turned areas of the reflecting surface and, based on the results of the measurement, controlling the nose position of the cutting tool now being used in turning the reflecting surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.