Cutting insert

US8231311B2 · kind B2 · utility

Assignee

• ISCAR, LTD. · IL

Inventors

• Assaf Ballas · Beer Sheva, IL
• Carol Smilovici · Nahariah, IL

Key dates

• Filing date: Mar 25, 2008
• Grant date: Jul 31, 2012
• Expiry date: Sep 9, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T407/235
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A cutting insert having a pentagonal prismatic shape. A cutting region is associated with each polygonal side and is elevated with respect to a central tangential abutment surface. A primary cutting edge associated with a polygonal side is formed at the intersection of a primary rake surface and a primary relief surface. A secondary cutting edge associated with a rounded corner is formed at the intersection of a secondary rake surface and a secondary relief surface and merges with the primary cutting edge. The primary relief surface forms with the associated side abutment surface a primary relief surface angle that varies from a maximal value adjacent an upper end of the primary cutting edge to a minimal value. The secondary relief surface forms with the associated rounded corner a secondary relief surface angle that varies from a maximal value adjacent the primary cutting edge to a minimal value.