Method of manufacturing composite grinding wheel
US4523930A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 6, 1984 |
| Grant date | Jun 18, 1985 |
| Priority date | — |
| Expiry date | Aug 6, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24D18/0009
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A composite grinding wheel comprising a support center with a peripheral groove containing a ring of metal bonded abrasive bonded thereto is made by placing in the bottom of an annular mold cavity, a ring whose internal bore is larger than and spaced from the inner smaller diameter of the mold cavity. The mold cavity above the ring is then filled with a sufficient volume of a mixture of metal bond and abrasive particles and closed off by an annular support center supported by the mold and having a central hub portion of smaller diameter than the internal bore in the ring and an axial height extending upwardly to an upper outer flange extending radially over the top of the mold cavity. The support center and ring are pressed together thereby compacting the mixture of metal bond and abrasive particles together between the upper outer flange and ring until the central hub extends into the ring and is substantially aligned with the bottom of the mold cavity and side of the ring. The cold pressed assembly is then heated sufficiently to sinter the metal bond, the abrasive particles, the support center, and ring, together into a unitary composite grinding wheel which is then stripped from…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.