Counter bearing for machining spindles of machine tools and method for clamping counter bearings and tools

US10821523B2 · kind B2 · utility

Assignee

• Michael Weinig AG · DE

Inventors

• Ralf Wagner · Solingen, DE
• Rainer Gramlich · Boxberg, DE

Key dates

• Filing date: May 17, 2018
• Grant date: Nov 3, 2020
• Expiry date: May 17, 2038

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16C2322/39
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A counter bearing for machining spindles of machine tools has at least one expansion bushing with an elastically deformable wall that delimits at least one pressure chamber. The pressure chamber accommodates a pressure medium. A supply line for the pressure medium opens into the pressure chamber. A pressure conduit opens into the pressure chamber. A mechanically actuatable pressure element is disposed in the pressure conduit and actuated by an actuating tool. A piston is slidably arranged in the pressure conduit and actuated by the pressure element, wherein the piston loads the pressure medium.