Curved surface formation polishing apparatus
US4656787A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 22, 1985 |
| Grant date | Apr 14, 1987 |
| Priority date | — |
| Expiry date | Apr 22, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24B13/015
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A curved surface formation polishing apparatus for rotationally symmetrical objects such as optical lenses, mirrors, etc., which is so arranged that, by relatively displacing a processing tool and a workpiece in a direction generally intersecting at right angles with the rotary axis of the processing tool mounted on a rotating spindle so as to follow a predetermined curved surface cross section shape, grinding loci at a processing point of the workpiece formed by an abrasive grain cutting edge of the processing tool will overlap each other by crossing as the processing proceeds, thus achieving a favorable finished surface. Moreover, according to another embodiment of the present invention, more than two processing tools can be mounted on the same rotary axis, and there is provided a device for displacing the processing tools in the direction of the rotary axis so as to change-over the processing tools according to end uses and processing steps, so that change-over of the processing tools is facilitated, while it becomes possible to reduce deterioration in the accuracy of the processed shape by setting errors of the processing tools, with a simultaneous simplification of constructio…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.