Crankshaft and method for producing the same
US8813358B2 · kind B2 · utility
5Cited by
3References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 23, 2013 |
| Grant date | Aug 26, 2014 |
| Priority date | — |
| Expiry date | Apr 23, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/2185
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
In a crankshaft 200, one hole 213L formed in a crankpin 213 has a bottom surface having a larger area and a depth from a surface of the crankpin less than those of another hole 213M. In forming the hole 213L and the hole 213M, a preformed product 200 of the crankshaft having a shape smaller than that of a cavity is disposed in a die set and punches are simultaneously inserted into the crankpin 213. By this operation, the hole 213L and the hole 213M are simultaneously formed in each crankpin 213 of the preformed product 200.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.