Method of forging flanged shaft
US4571977A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 21, 1982 |
| Grant date | Feb 25, 1986 |
| Priority date | — |
| Expiry date | Sep 21, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21K1/08
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A forging method for producing a flanged shaft such as, for example, a crankshaft, provided at its intermediate portion with a flange with the flanged shaft being formed from a blank having a diameter which is smaller than the diameter of the shaft end portions but large enough to prevent buckling of the blank when the latter is compressed in the axial direction. The blank is placed within a closed die apparatus and is axially compressed by a punch so that it is possible to produce the flanged shaft at a high dimensional precision and at a high yield, while reducing the time and labor for finishing work conducted after the forging, without requiring any large-size press.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.