Apparatus for forming microscopic recesses on a cylindrical bore surface and method of forming the microscopic recesses on the cylindrical bore surface by using the apparatus
US7610786B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 8, 2005 |
| Grant date | Nov 3, 2009 |
| Priority date | — |
| Expiry date | Nov 23, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/496
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An apparatus for forming microscopic recesses on a circumferential surface that defines a cylindrical bore in a workpiece, the apparatus including a form roller, a form roller drive driving the form roller to rotate about a rotation axis in an axially offset position in which the rotation axis is offset from a central axis of the cylindrical bore, an axial drive causing a relative axial movement of the workpiece and the form roller drive along the central axis of the cylindrical bore, and a rotary drive driving at least one of the workpiece and the form roller drive to rotate about the central axis of the cylindrical bore while keeping an outer peripheral surface of the form roller pressing against the circumferential surface that defines a cylindrical bore.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.