Patent · US Active

Method and device for work-hardening a crankshaft

US11344980B2 · kind B2 · utility

0Cited by

7References

13Claims

0Family size

Assignee

MASCHINENFABRIK ALFING KESSLER GMBH

Inventors

Alfons Reeb · Aalen, DE
Jochen Schmidt · Trochtelfingen, DE
Konrad Grimm · Aalen, DE

Key dates

Filing date	Jun 4, 2018
Grant date	May 31, 2022
Priority date	—
Expiry date	Sep 15, 2038

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC21D2221/00
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

The invention relates to a method for work-hardening a crankshaft (4) comprising connecting rod journals (5), main bearing journals (6) and crank webs (7), the connecting rod journals (5) and the main bearing journals (6) being provided with oil holes (31). According to the invention, at least one end (30) of one of the oil holes (31) and/or at least one cylindrical portion (38) of the oil holes (31) is/are work-hardened.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.