Method of manufacturing a hollow cam shaft
US4612695A · kind A · utility
19Cited by
6References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 16, 1985 |
| Grant date | Sep 23, 1986 |
| Priority date | — |
| Expiry date | Jan 16, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/2101
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The method of manufacturing a lightweight, low cost hollow cam shaft includes the steps of forming an integral journal portion in a hollow pipe member by inwardly deforming a portion of the pipe member, such as by coining or spinning, the outer surface of the deformed portion being the bearing surface. Annular grooves formed immediately adjacent the inwardly deformed portion allow residue from an optional finish-grinding operation to escape. Cam members having fitting holes are fixedly mounted on undeformed pipe portions, or on outwardly deformed pipe portions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.