Cutting insert with twisted chip surface

US5810521A · kind A · utility

Assignee

• SANDVIK AB · SE

Inventors

• Goran Pantzar · Solna, SE
• Per Nilsson · Sandviken, SE
• Magnus Aspeby · Sandviken, SE

Key dates

• Filing date: Dec 23, 1996
• Grant date: Sep 22, 1998
• Expiry date: Dec 23, 2016

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T407/245
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

An indexable cutting insert comprises an upper surface, a bottom surface and side surface extending between said two surfaces. Between two adjacent cutting corners, a rake surfaces is formed such that the rake angle decreases with increasing cutting depth. In this way the cutting edge is reinforced towards a maximal cutting depth. This configuration is favorable, for example, at the machining of materials with a tendency of surface hardening.