Patent · US Active

Eight-edged cutting insert, and tool holder for same

US8282320B2 · kind B2 · utility

20Cited by

21References

19Claims

0Family size

Assignee

KENNAMETAL INC. · US

Inventors

Rudi Hartlohner · Tuchenbach, DE
Igor Kaufmann · Nuremberg, DE

Key dates

Filing date	Feb 2, 2008
Grant date	Oct 9, 2012
Priority date	—
Expiry date	May 20, 2029

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T407/235
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

The invention relates to an eight-edged rotatable and reversible cutting insert having two opposite, substantially square base surfaces which are twisted relative to one another about a central axis running perpendicularly to said base surfaces, and having four identical side surfaces, wherein a main lip is formed between each base surface and each side surface. A bearing surface is formed between two chip grooves which extend along the associated main lip of the respective side surface, said bearing surface extending symmetrically beyond the groove ends of the adjacent chip groove and transversely to the main lips until its adjoins the latter.

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