Methods for shaping and finishing prosthetic joint components including polycrystalline diamond compacts
US6410877B1 · kind B1 · utility
41Cited by
189References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 30, 2000 |
| Grant date | Jun 25, 2002 |
| Priority date | — |
| Expiry date | Jan 30, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23H9/008
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method of rough shaping a prosthetic joint component that includes a generally spherical polycrystalline diamond compact by electric discharge machining is disclosed. The discharge machining electrode roughens a polycrystalline diamond compact sphere while the electrode and the sphere are rotating about different axes. By controlling the amount of discharge current, the depth and amount of the heat affected zone can be minimized. In the case of a polycrystalline diamond compact, the heat affected zone can be kept to about 3 to 5 microns in depth and is easily removable by grinding and polishing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.