公开(公告)号：US10967438B2

公开(公告)日：2021-04-06

申请号：US16523319

申请日：2019-07-26

Applicant: Kennametal Inc.

Inventor： Alan J. Bookheimer ,  Ruy Frota de Souza Filho

IPC: B23B31/20

Abstract: A collet includes an axially rearward end and an axially forward end; a nose portion; a body portion having an outer surface and an inner surface for engaging a shank of a tool; a plurality of slots extending from the inner surface to the outer surface; and a plurality of coolant channels disposed within the collet between the plurality of longitudinally extending slots and extending entirely from the axially rearward end to the axially forward end of the collet. Slots include a first slot extending from the axial forward end to within an intermediary zone, a second slot extending from the axial rearward end to at least the tool holder engagement zone such that the second slot does not intersect the first slot, and a third slot from within the tool engagement zone to within the intermediary zone such that the third slot circumferentially overlaps the first and second slots.

公开(公告)号：US20190009381A1

公开(公告)日：2019-01-10

申请号：US15641728

申请日：2017-07-05

Applicant: Kennametal Inc.

Inventor： Ruy Frota de Souza Filho ,  Alan J. Bookheimer

IPC: B23Q11/10 ,  B23B31/26

Abstract: A clamping unit includes a drawbar having an interior surface defining a fluid transport channel. A fluid transport pipe is at least partially disposed within the interior of the drawbar and is in fluid communication with a fluid transport adapter and a fluid transport channel to enable high pressure fluid to be provided directly to a toolholder. The clamping unit further comprises at least one spring-like member positioned around the outer surface of the drawbar to provide a biasing force against an end plate. The drawbar is movable along a longitudinal axis between a locked position and a tool release position by applying and not applying hydraulic pressure against the end plate, thereby providing a quick-change feature of the invention.

公开(公告)号：US20230256520A1

公开(公告)日：2023-08-17

申请号：US17674382

申请日：2022-02-17

Applicant: Kennametal Inc.

Inventor： Logan M. Semnisky ,  Alan J. Bookheimer ,  Ingo Grillenberger

IPC: B23B29/034

CPC classification number: B23B29/034 ,  B33Y80/00

Abstract: A rotary cutting tool includes a support structure having a central hub located at an axially rearward end of the rotary cutting tool. A plurality of primary support members extends from the central hub in different axial and radial directions in three-dimensional space with respect to a central, rotational axis of the rotary cutting tool. The support structure may include one or more secondary support members extending from a primary support member in different axial and radial directions in three-dimensional space, and one or more tertiary support members to increase stiffness of the support structure. The central hub extends in a plane that is substantially perpendicular to the central, rotational axis of the rotary cutting tool. In one embodiment, each of the plurality of primary support members have a different physical dimension.

公开(公告)号：US20230094485A1

公开(公告)日：2023-03-30

申请号：US17449552

申请日：2021-09-30

Applicant: Kennametal Inc.

Inventor： Alan J. Bookheimer

IPC: B23B27/00 ,  B23B27/08 ,  B23C3/06

Abstract: 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.

公开(公告)号：US11571759B2

公开(公告)日：2023-02-07

申请号：US17116782

申请日：2020-12-09

Applicant: Kennametal Inc.

Inventor： Logan M. Semnisky ,  Alan J. Bookheimer ,  Ingo Grillenberger ,  Dominik Schmid

IPC: B23D77/00

Abstract: 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.

公开(公告)号：US20230016177A1

公开(公告)日：2023-01-19

申请号：US17374263

申请日：2021-07-13

Applicant: Kennametal Inc.

Inventor： Alan J. Bookheimer ,  Logan M. Semnisky

IPC: B23D77/00

Abstract: A cutting tool includes a tubular body made of a composite material, such as carbon reinforced fiber polymer (CFRP). A front support structure comprising a central hub and a plurality of spokes extending radially outward from the central hub is attached proximate the front end of the tubular body. A rear support structure comprising a central hub and a plurality of spokes extending radially outward from the central hub is attached proximate the rear end of the tubular body. Cartridge supports are attached directly to one of the front and rear support structures. A rear machine connection member is attached to the rear support structure for providing coolant to the front and rear support structures. The CFRP tubular body increases the stiffness to weight ratio of the cutting tool.

公开(公告)号：US11504784B2

公开(公告)日：2022-11-22

申请号：US17115997

申请日：2020-12-09

Applicant: Kennametal Inc.

Inventor： Logan M. Semnisky ,  Alan J. Bookheimer

IPC: B23D77/02

Abstract: A cutting tool with interconnected arms that increases the stiffness to weight ratio of the cutting tool is described. The principles of the invention can be applied to any cutting tool, such as a reamer, a milling cutter, a slotting cutter, and the like. In one example, a cutting ring includes a cutting head assembly with a leading arm, a trailing arm, and a cutting head supported by the leading arm and the trailing arm. The trailing arm interconnects with the leading arm of an adjacent cutting head assembly, and the leading arm interconnects with a trailing arm of another adjacent cutting head assembly. As a result of this interconnection of arms, the axial, radial and tangential stiffness to weight ratio of the cutting tool is increased. A support member may be included to further increase the stiffness to weight ratio.

公开(公告)号：US20200215627A1

公开(公告)日：2020-07-09

申请号：US16239094

申请日：2019-01-03

Applicant: Kennametal Inc.

Inventor： Alan J. Bookheimer ,  Ruy Frota de Souza Filho ,  Jason Won Goldsmith ,  Jeremy P. Canonge

IPC: B23C5/22 ,  B23C5/00 ,  B23C5/08

Abstract: 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.

公开(公告)号：US10449608B2

公开(公告)日：2019-10-22

申请号：US15486386

申请日：2017-04-13

Applicant: Kennametal Inc.

Inventor： Alan J. Bookheimer ,  Jeremy Canonge ,  Edward J. Rusnica, Jr.

IPC: B23B31/107 ,  B23B29/04

Abstract: 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 canister configured for receipt in the bore of the base member, a lock rod with an axial forward and an axial rearward end, wherein the axial forward end of the lock rod includes a compression void such as a compression aperture or compression slot formed therethrough, and at least one locking member in communication with the axial forward end of the lock rod.

公开(公告)号：US20180347701A1

公开(公告)日：2018-12-06

申请号：US15614401

申请日：2017-06-05

Applicant: Kennametal Inc.

Inventor： Alan J. Bookheimer ,  Ruy Frota de Souza Filho

IPC: F16J15/14 ,  B23B31/20 ,  B23Q1/00

CPC classification number: B23B31/202 ,  B23B2231/2008 ,  B23B2231/2075 ,  B23B2231/2091 ,  B23B2231/2094 ,  B23B2231/2097 ,  B23B2231/24 ,  B23B2250/12 ,  Y10T279/17111 ,  Y10T279/17299 ,  Y10T279/17435 ,  Y10T279/17538

Abstract: A collet includes an axially rearward end and an axially forward end; a nose portion; a body portion having an outer surface and an inner surface for engaging a shank of a tool; a plurality of slots extending from the inner surface to the outer surface; and a plurality of coolant channels disposed within the collet between the plurality of longitudinally extending slots and extending entirely from the axially rearward end to the axially forward end of the collet. The slots include a first slot extending from the axial forward end to within an intermediary zone, a second slot extending from the axial rearward end to at least the tool holder engagement zone such that the second slot does not intersect the first slot, and a third slot from within the tool engagement zone to within the intermediary zone such that the third slot circumferentially overlaps the first and second slots.