Multi-edged machining tool for post-machining of bores

US9144853B2 · kind B2 · utility

Assignee

• Guehring OHG · DE

Inventors

• Jochen Bitzer · Tailfingen, DE
• Gerd Heckel · Puschendorf, DE

Key dates

• Filing date: May 13, 2011
• Grant date: Sep 29, 2015
• Expiry date: Jun 6, 2034

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T408/9095
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a multi-edged machining tool for the post-machining or precision machining of bores. The tool has at least one cutting insert with a pre-determined nominal diameter measurement and with cutting edges that are distributed substantially uniformly around the periphery, in addition to a guide body assembly that is axially offset in relation to said edges. The guide body assembly can be an integral component of a substantially cylindrical guide body that consists of a solid carbide. In some embodiments, said guide body forms at least n helical guide ribs which are equidistant around the periphery and which have a nominal diameter substantially smaller than the nominal diameter measurement of the cutting insert by a value equating to double the dimension of the lubricant gap that is formed during the operation of the tool.