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公开(公告)号：US20210178490A1
公开(公告)日：2021-06-17
申请号：US17122244
申请日：2020-12-15
Applicant: Kennametal Inc.
Inventor： Michael Schuffenhauer
IPC: B23B31/00 , B23B31/113
Abstract: A rotary cutting tool comprises a tool body having an axis of rotation (L) and a cylindrical shank, which comprises at least one locking groove via which the cutting tool can be axially locked in a tool holder. The locking groove has an axial groove, which extends from an axial end on the receiving side in axial direction (A) to an axial stop, and a circumferential groove, which is laterally adjacent to the axial groove and extends away from the axial stop and the axial groove in circumferential direction (U) toward a rotation stop. The circumferential groove comprises a first end face and a second end face opposite to said first end face, both of which extend in a plane that is perpendicular to the axis of rotation (L). A tool assembly having such a rotary cutting tool and a tool holder having a cylindrical tool receptacle for the cutting tool is provided as well.
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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.
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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.
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公开(公告)号：US20220410278A1
公开(公告)日：2022-12-29
申请号：US17361120
申请日：2021-06-28
Applicant: KENNAMETAL INC.
Inventor： Marcelo Euripedes da Silva , Patrick Kuhlemann , Christoph Gey , Michael Schuffenhauer , Berthold Heinrich Zeug
Abstract: A modular drill including a shank having a shank bore therein, a guide pin tip disposed in the shank bore, a cutting tip, and a connection shaft coupled to the cutting tip, the connection shaft having a connection shaft sidewall and a guide path therein for guiding the guide pin tip therethrough while the connection shaft moves through the shank bore.
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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
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.
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Patent Agency Ranking
公开(公告)号：US11839920B2
公开(公告)日：2023-12-12
申请号：US17361120
申请日：2021-06-28
Applicant: KENNAMETAL INC.
Inventor： Marcelo Euripedes da Silva , Patrick Kuhlemann , Christoph Gey , Michael Schuffenhauer , Berthold Heinrich Zeug
CPC classification number: B23B27/1611 , B23B35/00
Abstract: A modular drill including a shank having a shank bore therein, a guide pin tip disposed in the shank bore, a cutting tip, and a connection shaft coupled to the cutting tip, the connection shaft having a connection shaft sidewall and a guide path therein for guiding the guide pin tip therethrough while the connection shaft moves through the shank bore.
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公开(公告)号：US20180264558A1
公开(公告)日：2018-09-20
申请号：US15916903
申请日：2018-03-09
Applicant: Kennametal Inc.
IPC: B23B51/02
CPC classification number: B23B51/02 , B23B2251/02 , B23B2251/50
Abstract: The rotary tool has two coupling parts, namely a carrier and a cutting head having a front end face. The carrier has a pin seat into which a coupling pin of the cutting head is inserted. Effective stop faces are formed on the pin seat and on the coupling pin in the axial direction for axial pull-out protection. For a design that is as simple as possible, in particular in terms of grinding, a side face adjoins a respective stop face of the coupling pin and, when viewed in the axial direction, freely extends to the end face. In particular, the side face forms a torque face. For reliable clamping attachment, in particular with larger nominal diameters (D), a separating slot is made in the carrier and a clamping screw is inserted into it, both of which serve to fix the cutting head in the pin seat.
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公开(公告)号：US11529687B2
公开(公告)日：2022-12-20
申请号：US17122244
申请日：2020-12-15
Applicant: Kennametal Inc.
Inventor： Michael Schuffenhauer
IPC: B23B31/00 , B23B31/113
Abstract: A rotary cutting tool comprises a tool body having an axis of rotation (L) and a cylindrical shank, which comprises at least one locking groove via which the cutting tool can be axially locked in a tool holder. The locking groove has an axial groove, which extends from an axial end on the receiving side in axial direction (A) to an axial stop, and a circumferential groove, which is laterally adjacent to the axial groove and extends away from the axial stop and the axial groove in circumferential direction (U) toward a rotation stop. The circumferential groove comprises a first end face and a second end face opposite to said first end face, both of which extend in a plane that is perpendicular to the axis of rotation (L). A tool assembly having such a rotary cutting tool and a tool holder having a cylindrical tool receptacle for the cutting tool is provided as well.
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公开(公告)号：US10189090B2
公开(公告)日：2019-01-29
申请号：US15460908
申请日：2017-03-16
Applicant: Kennametal Inc.
Inventor： Michael Schuffenhauer
Abstract: A drilling tool with: a shaft; a seat at one end of the shaft; a drill bit, which is arranged on the seat; and a clamping section, which is provided on the shaft and can interact with the drill bit. Also provided is a tensioning screw, which is screwed into the shaft and comprises an expanding section as well as a contact section. The expanding section interacts with the clamping section, and the contact section interacts with the drill bit.
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公开(公告)号：US20180029150A1
公开(公告)日：2018-02-01
申请号：US15727824
申请日：2017-10-09
Applicant: Kennametal Inc.
Inventor： Armin Josef Zimmerman , Robert Meyer , Michael Schuffenhauer
IPC: B23D77/02
Abstract: A reamer has a shank made of steel and a cutting body made of a harder material, wherein the cutting body forms the outer circumference of the reamer in the region of the workpiece side end and has all the cutting ribs.
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