Cutting knife for severing tough elastic materials and production method therefor

US6422110B1 · kind B1 · utility

Assignee

• C. & E. FEIN GMBH · DE

Inventors

• Bert Wurst · Asperg, DE
• Stefan Gahlert · Stuttgart, DE

Key dates

• Filing date: Jul 25, 2000
• Grant date: Jul 23, 2002
• Expiry date: Jul 25, 2020

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B26D2001/002
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A cutting knife and a method for production are provided, the knife being suitable for severing tough, elastic material, in particular cement beads of window panes cemented in motor vehicles. The knife comprises a securement portion having a securement receptacle for securing the cutting knife to an oscillatory drive of a cutting tool, and a cutting portion with at least one cutting edge. The cutting knife comprises a plurality of flat bonded layers, which are preferably bonded together by forging. Additionally or alternatively, an outer wear resistant layer is applied, preferably by thermal spraying. The cutting knife has an improved elasticity and increased bending strength in combination with improved cutting properties.