Process for manufacturing universal joint
US4646552A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 14, 1983 |
| Grant date | Mar 3, 1987 |
| Priority date | — |
| Expiry date | Dec 14, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/7182
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A process for manufacturing a universal joint mainly by cold forging which comprises PA0 a blanking step to punch out a blank having a pair of fork member portions projecting from one side thereof and a hub member portion out of a sheet metal or coiled sheet metal material, PA0 a press-working step to form bolt holes on the lug member portions and projections on the opposite side thereof by extrusion, PA0 a forming step to bend each root portion of each pair of fork member portions to bring them to a fixed height from the hub member portion, PA0 a primary bending step to form the hub member portion into a cylindrical shape, PA0 a secondary bending step to project the lug member portions in parallel to each other from said cylindrically shaped hub member portion after completion of the primary bending step, and PA0 a press-reforming step to straighten the configuration of the formed product after the secondary bending step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.