Patent · US Active

Hydraulic expanding chuck

US11786978B2 · kind B2 · utility

0Cited by

4References

19Claims

0Family size

Assignee

Guehring KG · DE

Inventors

Bruno Teusch · Eßlingen, DE
Klaus Matheis · Meßkirch, DE

Key dates

Filing date	Jun 1, 2018
Grant date	Oct 17, 2023
Priority date	—
Expiry date	Jun 1, 2038

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T279/1241
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

The invention relates to a hydraulic expanding chuck for gripping a tool, for example a drill or a milling tool, comprising: a clamping part having an expansion sleeve having a central receiving opening for receiving and clamping the tool; and a connection part, in particular having a HSK connection. According to the invention, the expansion sleeve has at least two pressure chambers, which are designed to run around the central receiving opening, which are arranged at an axial distance relative to one another, and which can bulge when the tool received in the central receiving opening is subjected to fluid pressure. The at least two pressure chambers are connected to one another by a fluid channel.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.