Tool for the production of arc-shaped grooves

US5911548A · kind A · utility

Assignee

• WALTER AG · DE

Inventors

• Siegfried Deiss · Gomaringen, DE
• Rolf Huber · Tübingen, DE
• Rolf Vollmer · Gersfeld, DE

Key dates

• Filing date: Feb 20, 1997
• Grant date: Jun 15, 1999
• Expiry date: Feb 20, 2017

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T409/30952
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

To form undercut grooves in a work piece, especially to retain turbine rotor blades, in a first step, the grooves are cut such that the flanks of the grooves have a preliminarily desired shape; then, in a second step, a bell-type countersink is moved radially to cut the desired shape of the flanks of the groove. Countersink cutters for the second step include a plurality of groups of cutting bits or inserts secured to posts on a shell, or bell-type countersink, in accordance with the profile to be cut.