公开(公告)号：US12151293B2

公开(公告)日：2024-11-26

申请号：US17439546

申请日：2020-03-13

Applicant: Kennametal Inc.

Inventor： Marcus Paul ,  Bernhard Eckl ,  Herbert Rudolf Kauper

IPC: B23B51/08 ,  B23B51/00 ,  B23B51/10

Abstract: The combination tool (2), in particular a drilling/chamfering tool, comprises a drill (6) extending in the longitudinal direction (4) with a clamping sleeve (8), which is designed to receive the drill (6) and fasten the drill (6) at a variable length and which has a holding seat (38) for a cutting insert (12). The drill (6) comprises a cutting region (22) provided with grooves (14), wherein the grooves (14) extend helically and are formed between two grooves (14) drill backs (18). At least one of the drill backs (18) is partially flattened to form an adjustment surface (16) for the cutting insert (12), wherein the adjustment surface (16) extends helically. As a result, a length adjustment over a large length range is made possible independently of the twist angle (γ).

公开(公告)号：US20240198433A1

公开(公告)日：2024-06-20

申请号：US18540056

申请日：2023-12-14

Applicant: Kennametal Inc.

Inventor： Bernhard Eckl ,  Michael Schuffenhauer ,  Berthold Zeug

IPC: B23B27/16

CPC classification number: B23B27/1611

Abstract: The invention relates to a modular tool comprising a body and an insert for machining a workpiece, wherein the insert comprises a tenon for insertion into a receptacle of the body, wherein the body comprises an access hole, through which the tenon is accessible for an assembly tool, wherein the tenon comprises a profile portion, which, upon insertion of the assembly tool into the access hole, engages with a lateral surface of the assembly tool so that, by a rotation of the assembly tool, the insert can be ejected from the receptacle. Furthermore, a method for ejecting an insert of such a modular tool is specified.

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：US20240238879A1

公开(公告)日：2024-07-18

申请号：US18411950

申请日：2024-01-12

Applicant: Kennametal Inc.

Inventor： Bernhard Eckl ,  Jürgen Schwägerl

IPC: B23B51/00

CPC classification number: B23B51/0004

Abstract: An apparatus is specified that comprises a rotary tool, wherein the rotary tool extends along a longitudinal axis and in an axial direction, wherein the rotary tool comprises a body, a cutting insert and a clamping rod, wherein the body has a shank on the rear-facing end, for clamping into a bracket, wherein the clamping rod extends through the body in the axial direction, wherein the clamping rod is adapted on the front-facing end to attach the cutting insert, wherein the clamping rod extends rearward towards the shank and can be actuated by means of a tool to attach the cutting insert to, or to detach the latter from, the body, wherein the clamping rod comprises an access hole arranged such that the clamping rod can be actuated while the rotary tool is clamped in the bracket. Further, a method for attaching or detaching a cutting insert on such an apparatus is specified.

公开(公告)号：US20250065417A1

公开(公告)日：2025-02-27

申请号：US18810054

申请日：2024-08-20

Applicant: KENNAMETAL INC.

Inventor： Bernhard Eckl

IPC: B23B27/16

Abstract: A rotary cutting tool has a tool shank and at least one guide pad, which is fastened on the outer circumference of the tool shank and has a radially external fluid groove. The guide pad has an inlet channel, via which the fluid groove is fluidly connected to an internal fluid line in the tool shank.

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.