Patent · US Active

Hydraulic-expansion chuck and the use thereof

US11529688B2 · kind B2 · utility

0Cited by

8References

9Claims

0Family size

Assignee

Shaeffler Technologies AG & Co. KG · DE

Inventors

Claus Schaeperkoetter · Erlangen, DE
Stefan Becke · Neustadt, DE
Michael Mayer · Echterdingen, DE

Key dates

Filing date	Feb 28, 2019
Grant date	Dec 20, 2022
Priority date	—
Expiry date	Mar 29, 2039

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB33Y80/00
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A hydraulic-expansion chuck for clamping a workpiece includes an annular body, an inner circumferential surface, an outer circumferential surface, and an axis of rotation. The chuck also includes a channel integrated into the annular body for receiving a pressurized hydraulic fluid to clamp the workpiece. The channel has an annular peripheral channel section formed radially between the inner circumferential surface and the outer circumferential surface. The chuck also includes a holding contour with a plurality of expansion lugs disposed on the inner circumferential surface and a plurality of further channel sections branching off from the channel. At least one of the plurality of further channel sections extends into a respective lug of the plurality of expansion lugs, and the hydraulic-expansion chuck is manufactured by an additive manufacturing process.

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