公开(公告)号：US20240024961A1

公开(公告)日：2024-01-25

申请号：US17871530

申请日：2022-07-22

Applicant: Kennametal Inc.

Inventor： Santosh B. Boregowda ,  Ruy Frota de Souza Filho ,  Dominik Schmid ,  Michael Schuffenhauer ,  Josef Herud

IPC: B23B31/30

CPC classification number: B23B31/305

Abstract: Expansion sleeves are disclosed comprising a body and a flange. The body may be generally cylindrical and includes an inner wall, an outer wall integrally formed with the inner wall, and a pressurized fluid chamber located radially between and encapsulated in the inner wall and the outer wall. The front flange extends radially outward from the outer wall of the body. The front flange may comprise a tool support connection structured and arranged to fasten the front flange to a tool support member. The tool support member may include a pressurized fluid system that communicates with the pressurized fluid chamber of the expansion sleeve. The expansion sleeves may be secured to the tool support member by mechanical fasteners, threading, or combinations thereof. During operation, pressurized fluid in the tool support member communicates with the pressurized fluid chamber of the expansion sleeve to clamp a tool shank.

公开(公告)号：US10293413B2

公开(公告)日：2019-05-21

申请号：US14797718

申请日：2015-07-13

Applicant: KENNAMETAL INC.

Inventor： Michael Schuffenhauer ,  Josef Herud

IPC: B23B31/117 ,  B23B31/30 ,  B23B31/02

Abstract: The invention relates to a hydraulic expansion chuck having an end on the tool side; and an end on the machine side. A shaft is disposed on the end on the machine side for clamping the expansion chuck in a machine tool. An expanding bushing is disposed on the end on the tool side and surrounded by a pressure chamber and can be radially deformed for clamping a tool under the action of a pressure medium received in the pressure chamber.