公开(公告)号：US20250041949A1

公开(公告)日：2025-02-06

申请号：US18228430

申请日：2023-07-31

Applicant: Kennametal Inc.

Inventor： Ruy Frota de Souza Filho ,  Austin Baer ,  Dominik Smidt

IPC: B23B31/30

Abstract: A hydraulic chuck assembly includes a tool support member having an axial bore. An expansion sleeve is received within the axial bore of the tool support member. The expansion sleeve comprises an inner surface, an outer surface and a front flange extending radially outward from the outer surface. A primary pressure chamber is formed between the axial bore of the tool support member and the outer surface of the expansion sleeve. A flexibility of the expansion sleeve is increased by removing material from the expansion sleeve in a vicinity of a front braze ring and a rear braze ring, thereby decreasing a maximum stress in the front braze ring and the rear braze ring. The material is removed by undercuts that form secondary pressure chambers in fluid communication with the primary pressure chamber.

公开(公告)号：US20250144722A1

公开(公告)日：2025-05-08

申请号：US19012501

申请日：2025-01-07

Applicant: Kennametal Inc.

Inventor： Ruy Frota de Souza Filho ,  Alan J. Bookheimer ,  Austin Baer ,  Marcelo Euripedes da Silva ,  Berthold Zeug ,  Michael Schuffenhauer ,  Bernhard Eckl

IPC: B23B51/00 ,  B23B27/16

Abstract: Rotary cutting tools are disclosed comprising shanks and replaceable cutting inserts are provided. A head of the cutting insert includes insert centering surfaces that contact the pocket centering walls of the shank, and insert drive surfaces that contact the torque transmitting pocket drive walls of the shank. The configurations and sizes of the shank and cutting insert features are controlled to provide improved torque transmission, rigidity and stability during operation of the rotary cutting tools.

公开(公告)号：US20240307978A1

公开(公告)日：2024-09-19

申请号：US18120943

申请日：2023-03-13

Applicant: Kennametal Inc.

Inventor： Ruy Frota de Souza Filho ,  Alan J. Bookheimer ,  Austin Baer ,  Marcelo Euripedes Silva ,  Berthold Zeug ,  Michael Schuffenhauer ,  Bernhard Eckl

IPC: B23B51/00 ,  B23B27/16

CPC classification number: B23B51/0007 ,  B23B27/1611

Abstract: Rotary cutting tools are disclosed comprising shanks and replaceable cutting inserts are provided. The shank comprises a pocket which receives an interchangeable cutting insert. The pocket includes a floor with a central pin-receiving hole, opposing pocket centering walls, and torque transmitting pocket drive walls. The cutting insert has a relatively long rear pin receivable in the central hole of the shank. A head of the cutting insert includes insert centering surfaces that contact the pocket centering walls of the shank, and insert drive surfaces that contact the torque transmitting pocket drive walls of the shank. The configurations and sizes of the shank and cutting insert features are controlled to provide improved torque transmission, rigidity and stability during operation of the rotary cutting tools.

公开(公告)号：US20240278333A1

公开(公告)日：2024-08-22

申请号：US18112251

申请日：2023-02-21

Applicant: Kennametal Inc.

Inventor： Alan J. Bookheimer ,  Austin Baer ,  Logan Semnisky

IPC: B23B31/22 ,  B23B29/04 ,  B23B31/107

CPC classification number: B23B31/22 ,  B23B29/046 ,  B23B31/1071 ,  B23B2231/46 ,  B23B2260/03

Abstract: A clamping assembly includes a base member having an internal bore, a lock rod within the internal bore of the base member and moveable between an unlocked position and a locked position, the lock rod including a lock rod cam surface and a first bearing, a crank wheel having an axis of rotation and a third bearing, and a linkage including a second bearing comprising an elongated cavity formed in an outer surface, a fourth bearing and a cam surface at one end thereof.