Patent · US Expired

Method and device for moulding a tripod spider

US6708549B2 · kind B2 · utility

1Cited by

4References

20Claims

0Family size

Assignee

GKN Lobro GmbH · DE

Inventors

Volker Hainz · Heusenstamm, DE
Norbert Hofmann · Ronneburg, DE
Michael Ricks · Nidderau, DE

Key dates

Filing date	Aug 26, 2002
Grant date	Mar 23, 2004
Priority date	—
Expiry date	Aug 26, 2022

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB21K1/762
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A method of and device for forming a tripode star for a tripode joint, which tripode star comprises an annular hub member and three arms which adjoin the hub member, extend radially relative to a longitudinal axis (A) and form faces of spherical portions each positioned circumferentially relative to arm axes (Z) of the arms, wherein, in a first production stage, the hub member and the three arms are preformed from a blank by means of a first tool divided in a plane (E1) containing the arm axes (Z) and wherein, in a second production stage, pairs of burr-free faces of spherical portions positioned opposite one another in the circumferential direction relative to the hub member (12) are formed on to the preformed arms by means of a second tool divided in planes extending through the longitudinal axis (A) of the hub member and through the arm axes (Z).

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