Multi piece swivel chuck for holding conical shaped work
US6497765B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 7, 2000 |
| Grant date | Dec 24, 2002 |
| Priority date | — |
| Expiry date | Jun 7, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T279/275
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An improved chuck for supporting elongated work pieces having conical end portions, such as single crystal ingots used to fabricate semiconductor wafers, while such. The chuck is typically used in a lathe for positioning and allowing rotation of the work piece during a grinding procedure that results in optimal work piece diameter. The chuck comprises a ring-shaped base, or socket, having a cavity defining a central axis therethrough and a series of fastener holes for securing the base to a headstock or tailstock of a lathe. The base receives within the cavity a portion of a chuck insert. The chuck insert defines a work piece support surface that is coaxial with the central axis when the chuck insert is disposed in a nominal position within the cavity of the base. The work piece support surface will typically define a continuous, arcuate, convex surface capable of supporting work pieces having conical end portions of varying diameters. The chuck also includes a retainer that is adapted to surround and support at least a portion of the chuck insert. The retainer allows the chuck insert to pivot from the nominal position to a predetermined angle relative to the central axis when the …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.