Crankshaft and method of strengthening shaft component
US10300523B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2015 |
| Grant date | May 28, 2019 |
| Priority date | — |
| Expiry date | Nov 20, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2202/06
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A crankshaft that can be strengthened in a short time without being subjected to wasteful processing, and that can be strengthened over a wide range. The crankshaft includes a crank pin and a fillet portion of a journal pin. Compressive residual stress is applied to a region on the fillet portion, which extends at almost equal distances to both sides in a circumferential direction from a portion in which the greatest bending load is applied, and a processing depth for applying the compressive residual stress is gradually decreased in a circumferential direction from the center position in which the compressive residual stress is greatest.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.