Machine for grinding and polishing workpieces
US4216626A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 12, 1978 |
| Grant date | Aug 12, 1980 |
| Priority date | — |
| Expiry date | May 12, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24B13/023
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Machine for grinding and polishing workpieces having a spherical surface, such as spectacle glasses, optical lenses, and the like, including a workpiece support disposed for rotation about a generally vertical axis for mounting the workpiece for exposure during the machining operation to the action of a work tool operatively applied under pressure against the workpiece for carrying out such action, the workpiece support having a spherical workpiece receiving surface provided with a predetermined radius of curvature generally corresponding to that of the spherical surface of the workpiece to be operatively mounted thereon and situated such that the center of the radius of curvature coincides with the rotation axis of the workpiece support, a work tool holder such as a pressure spindle sleeve for operatively holding the work tool for carrying out the grinding and polishing action and for maintaining the work tool against the workpiece under the applied pressure, a rocker connected to the work tool holder to form a unit therewith and mounted for reciprocating movement about a pivot axis arranged generally normal to the rotation axis of the workpiece support, and a reciprocating drive …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.