Patent · US Expired

Internal broach

US6918716B2 · kind B2 · utility

6Cited by

6References

9Claims

0Family size

Assignee

Forst Technologie GmbH & Co. KG · DE

Inventors

Andreas Berktold · Neuss, DE
Norbert Weghaus · Burscheid, DE

Key dates

Filing date	Dec 5, 2002
Grant date	Jul 19, 2005
Priority date	—
Expiry date	Dec 5, 2022

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T407/1671
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

An internal broach for internally broaching profiles, defined by a bottom and flanks, of female serrations of a work piece, comprises a toothed portion with several rows of broach cutting teeth disposed successively counter to a direction of broaching, successive broach cutting teeth being allocated to each other for broaching a profile. The broach cutting teeth have bottom cutting blades and first and second sides. The first sides are guide flanks, the edges of which are guide edges without cutting ability. The second sides are flank-cutting-blade relief surfaces, the edges of which are designed as flank blades with cutting ability.

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