Rotating shaft tool

US8157488B2 · kind B2 · utility

Assignee

• Guehring OHG · DE

Inventor

• Roland Schafer · Rottweil, DE

Key dates

• Filing date: May 7, 2010
• Grant date: Apr 17, 2012
• Expiry date: May 7, 2030

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T408/9065
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

Shaft tool with an adjustable cutting diameter, which permits improved handling. A rotating shaft tool, in particular a multi-stage reamer, with a first shaft part, equipped with a first cutting head comprising e.g. several cutting blades and a recess in the first shaft part, in which a second shaft part is positioned in the axis of the first shaft part, the second shaft part having a second cutting head with e.g. several blades and the diameter of the first cutting head being adjustable. The second shaft can be rotated in the first shaft part and the rotation in relation to one another creates a fixed connection between the shaft parts. This permits the connection between the two shaft parts and thus in particular the diameter of the first cutting head to be modified even though the shaft tool is inserted into e.g. a spindle of a machine tool.