Method of and tool for fine-machining a part-spherical workpiece
US5319891A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 10, 1992 |
| Grant date | Jun 14, 1994 |
| Priority date | — |
| Expiry date | Aug 10, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24B11/00
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A part-spherical surface having a center of curvature at a workpiece axis is surface finished by rotating the workpiece about the workpiece axis and rotating about a tool axis a tool having a body of substantially greater diameter than the workpiece. The tool has an end formed by a part-spherical seat of the same radius of curvature as the workpiece surface, having a center of curvature on the tool axis, and having an outer periphery of predetermined diameter substantially less than the tool-body diameter, and by a generally frustoconical surface centered on the tool axis and having a small-diameter end adjacent and of generally the same diameter as the seat outer periphery and a large-diameter end spaced axially rearwardly therefrom and joined to the tool body. The tool and workpiece axes are tilted relative to each other so they intersect at an obtuse attack angle smaller than 180.degree. and the tool and workpiece are pressed axially together to engage the surfaces together. The outer-periphery diameter and the attack angle are such that when axially engaged a portion of the workpiece surface is not covered by the tool surface and a portion of the tool surface is not engaged by …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.