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公开(公告)号：US20240139833A1
公开(公告)日：2024-05-02
申请号：US17979686
申请日：2022-11-02
申请人： Kennametal Inc.
发明人： Alan J. Bookheimer
CPC分类号： B23B51/0003 , B23B51/02 , B23B2205/04
摘要： A modular drill is disclosed. The modular drill includes a tool shank extending along a rotational axis. The tool shank includes a shank top end and a shank bottom end along a rotational axis and includes a cam slot extending at least partially through a width of the tool shank. The modular drill includes a cutting head extending from a cutting head top surface to a cutting head bottom surface centered on the rotational axis. The cutting head includes a draw pin extending from the bottom surface of the cutting head along the rotational axis and a draw pin notch. The modular drill includes a clamping cam including a cam shaft contacting the draw pin notch.
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公开(公告)号：US11358227B2
公开(公告)日：2022-06-14
申请号：US16434469
申请日：2019-06-07
申请人： Kennametal Inc.
摘要： A toolholder assembly includes a toolholder having a rearwardly facing toolholder shank, a base member having a bore configured for receiving the toolholder shank, a lock rod with an axial forward and an axial rearward end, at least one locking member in communication with the axial forward end of the lock rod, and a flexible canister configured for receipt in the bore of the base member. The flexible canister includes at least one flexible feature that reduces a stiffness (i.e., increases flexibility) of the flexible canister. In one aspect, the flexible feature is a slot proximate a locking passageway of the canister.
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公开(公告)号：US20210323082A1
公开(公告)日：2021-10-21
申请号：US17359732
申请日：2021-06-28
申请人： Kennametal Inc.
摘要： A hardware fastener with a movable threaded element suspended within a cavity formed in a body. The movable threaded element has an internal surface with threads for cooperating with a threaded fastener. The movable threaded element is suspended in the cavity by the one or more spring-like members such that an area, A, of reduced stiffness is created in the cavity proximate the movable threaded element, thereby allowing the movable threaded element to move a predetermined distance within the cavity when torque is applied to the threaded fastener. The one or more spring-like members store elastic potential energy to prevent the loss of pretension of the threaded fastener that can be caused by heat or vibration. The invention also eliminates the need for a torque wrench when tightening the threaded fastener to a specified torque value.
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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
申请人： Kennametal Inc.
发明人： Ruy Frota de Souza Filho , Alan J. Bookheimer , Austin Baer , Marcelo Euripedes Silva , Berthold Zeug , Michael Schuffenhauer , Bernhard Eckl
CPC分类号： B23B51/0007 , B23B27/1611
摘要： 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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公开(公告)号：US20240278333A1
公开(公告)日：2024-08-22
申请号：US18112251
申请日：2023-02-21
申请人： Kennametal Inc.
发明人： Alan J. Bookheimer , Austin Baer , Logan Semnisky
IPC分类号： B23B31/22 , B23B29/04 , B23B31/107
CPC分类号： B23B31/22 , B23B29/046 , B23B31/1071 , B23B2231/46 , B23B2260/03
摘要： 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.
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公开(公告)号：US11819925B2
公开(公告)日：2023-11-21
申请号：US17449552
申请日：2021-09-30
申请人： Kennametal Inc.
发明人： Alan J. Bookheimer
CPC分类号： B23B27/002 , B23B27/083 , B23C3/06 , B23B2250/16
摘要： A damper system for a cutting tool is provided having at least one damper body that is added to a cutter body of the cutting tool to help dampen a vibration when the cutting tool is placed in use. The damper body is supported by a damper ring. The damper ring is held in place between a central support boss or hub and an adjustable top cap. The adjustable top cap can be tightened or loosened by use of a fastener element to change the amount of pressure on the damper ring. By adjusting the tension placed on the damper ring, the damper system can be tuned to better suppress vibrations when the cutting tool is placed in use.
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公开(公告)号：US10940551B1
公开(公告)日：2021-03-09
申请号：US16557533
申请日：2019-08-30
申请人： Kennametal Inc.
发明人： Logan M. Semnisky , Alan J. Bookheimer , Ruy Frota de Souza Filho , Werner Penkert , Ingo Grillenberger , Dominik Schmid
摘要： A lightweight cutting tool, such as a reamer, includes a front cutting body, a front cutting ring, a center tube, a rear cutting ring and a rear machine connection member. An arm assembly of the front and rear cutting heads includes one or more leading arms, one or more trailing arms and a cutting head supported by the leading and trailing arms. The leading arms and the trailing arms curve in opposite directions. To reduce weight and moment of inertia of the reamer, a cross-sectional area of the leading arms and the trailing arms is largest proximate the sleeve member and is smallest proximate the cutting head. In addition, the front cutting body, the front and rear cutting rings and the center tube may be made by additive manufacturing. Fluid can be transported entirely through the reamer to the cutting insert/workpiece interface and the guide pad/workpiece interface.
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公开(公告)号：US20190270142A1
公开(公告)日：2019-09-05
申请号：US15910674
申请日：2018-03-02
申请人： Kennametal Inc.
发明人： Alan J. Bookheimer
摘要： In one aspect, composite tool holders are described herein comprising advantageous structural arrangements of metal carbide and alloy components. Briefly, a composite tool holder comprises a metal carbide shank comprising a bore having an inner diameter and outer diameter. An alloy sleeve is positioned in the bore for engaging a tool, wherein the alloy sleeve is bonded to inner diameter surfaces of the bore via a crosslinked adhesive.
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公开(公告)号：US20230302554A1
公开(公告)日：2023-09-28
申请号：US17702399
申请日：2022-03-23
申请人： Kennametal Inc.
摘要： A rotary cutting tool includes a disc-like central body having an outer peripheral surface. A peripheral support member extends circumferentially along the peripheral outer surface of the disc-like central body and provides support against centrifugal and cutting forces exerted on an insert pocket during a cutting operation. A radial support member extends radially along the disc-like central body to the peripheral support member. The radial support member structurally interacts with the peripheral support member to provide additional support for the insert pocket against centrifugal and cutting forces exerted on the insert pocket during a cutting operation. The radial support member and the peripheral support member have a three-dimensional topology that maximizes a stiffness-to-weight ratio of the rotary cutting tool. The rotary cutting tool may include a second radial support member extending radially along the disc-like central body to the peripheral support member.
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公开(公告)号：US20220176480A1
公开(公告)日：2022-06-09
申请号：US17116782
申请日：2020-12-09
申请人： Kennametal Inc.
IPC分类号： B23D77/00
摘要： A cutting tool, such as a reamer, includes a rear machine connection member, a center tube, a front cutting ring, and a rear cutting ring. The front cutting ring includes a sleeve member and one or more cutting head assemblies. Each cutting head assembly includes at least one support arm extending radially outwardly from a rotational axis, RA, of the cutting tool, and a cutting head supported by the at least one support arm. The at least one support arm of the cutting head assembly defines a fluid dynamic structure for directing fluid flow in a desired direction to facilitate chip evacuation during a cutting operation. The fluid dynamic structure can be an airfoil, a turbine blade, or similar structure that produces a directed fluid flow.
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