Method for grinding rough-shaped objects to a clean spherical form
US4903439A · kind A · utility
4Cited by
9References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 11, 1985 |
| Grant date | Feb 27, 1990 |
| Priority date | — |
| Expiry date | Mar 11, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24B11/02
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method of grinding rough-shaped spherical objects to a finished spherical form comprising the steps of freely supporting the rough-shaped spherical object on one end of a vertically oriented tube. This one end is open and has an inside diameter such that a segment portion of the object lies within the tube. Next, an abrasive is applied to the surface of the object, and the object is ground by vibrating the tube axially at a frequency in the range of approximatelly 20-25 KHz, whereby the surface of the object is ground to a truer spherical shape.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.