公开(公告)号：US20210060665A1

公开(公告)日：2021-03-04

申请号：US16557533

申请日：2019-08-30

Applicant: Kennametal Inc.

Inventor： Logan M. Semnisky ,  Alan J. Bookheimer ,  Ruy Frota de Souza Filho ,  Werner Penkert ,  Ingo Grillenberger ,  Dominik Schmid

IPC: B23B51/08

Abstract: 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.

公开(公告)号：US20210060661A1

公开(公告)日：2021-03-04

申请号：US16555412

申请日：2019-08-29

Applicant: Kennametal Inc.

Inventor： Ruy Frota de Souza Filho ,  Logan M. Semnisky

IPC: B23B51/02

Abstract: A rotary cutting tool includes a tool body including a chip flute portion having a plurality of helical chip flutes separated by lobes. In one aspect, a tunable vibration absorber assembly is disposed within a cavity formed in the chip flute portion. In another aspect, the tunable vibration absorber assembly is disposed within a cavity of a replaceable cutting head. In each aspect, the tunable vibration absorber assembly includes one or more tunable absorber masses, a resilient material between the one or more absorber masses and the cavity, and one or more connecting members for preventing relative angular displacement of the one or more tunable absorber masses. The one or more tunable absorber masses are suspended only by the resilient material, thereby enabling the tunable vibration absorber assembly to be tuned to a desired frequency for suppressing torsional vibration of the rotary cutting tool during a cutting operation.

公开(公告)号：US10399150B2

公开(公告)日：2019-09-03

申请号：US15614401

申请日：2017-06-05

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. 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.

公开(公告)号：US20190247926A1

公开(公告)日：2019-08-15

申请号：US15896218

申请日：2018-02-14

Applicant: Kennametal Inc.

Inventor： Xiangdong D. Fang ,  Ruy Frota de Souza Filho ,  David J. Wills

IPC: B23B27/10 ,  B23B27/16

CPC classification number: B23B27/10 ,  B23B27/16

Abstract: A cutting insert with internal coolant passageways is disclosed. The cutting insert includes at least one internal coolant inlet passageway having a first cross-sectional area, and at least one internal coolant exit passageway having a second cross-sectional area. The at least one internal coolant exit passageway is in fluid communication with the at least one internal coolant inlet passageway. The coolant enters the at least one internal coolant inlet passageway at a first surface of the cutting insert and exits the at least one coolant exit passageway at a second, different surface of the cutting insert. The second cross-sectional area of the at least one internal coolant exit passageway are less than the first cross-sectional area of the at least one internal coolant inlet passageway, thereby producing an increased streaming effect of the coolant to an insert-chip interface.

公开(公告)号：US10252389B2

公开(公告)日：2019-04-09

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：US20180281084A1

公开(公告)日：2018-10-04

申请号：US15478563

申请日：2017-04-04

Applicant: Kennametal Inc.

Inventor： Ruy Frota de Souza Filho

IPC: B23B51/02

CPC classification number: B23B51/02 ,  B23B2251/02 ,  B23B2251/50

Abstract: A front-loaded, side-activated modular drill includes a shank and a replaceable cutting insert installed on and engaging the tool shank. The shank has a pocket for supporting the cutting insert when the cutting insert is installed within the pocket. The pocket includes a first centering wall having an aperture with internal threads formed with a first pitch and a second centering wall having an aperture with a first portion with internal threads formed with a second, different pitch. A first member is threaded into the aperture of the first centering wall, and a second member is threaded into the second centering wall. The first member is threaded into the second member. The cutting insert has an opening in a trailing end for allowing the first member to pass therethrough. Rotation of the first member causes the centering walls to elastically deform and move relative to each other.

公开(公告)号：US09630258B2

公开(公告)日：2017-04-25

申请号：US14514826

申请日：2014-10-15

Applicant: Kennametal Inc.

Inventor： Michael R. McCormick ,  Ruy Frota de Souza Filho

IPC: B23B31/08 ,  B23B31/107

CPC classification number: B23B31/08 ,  B23B31/107 ,  B23B31/1075 ,  B23B2226/33 ,  B23B2250/16 ,  Y10T408/665 ,  Y10T408/73 ,  Y10T408/76 ,  Y10T408/9098 ,  Y10T408/94 ,  Y10T408/95 ,  Y10T409/304312 ,  Y10T409/309408 ,  Y10T409/30952

Abstract: In one aspect, tool holders employing axial sleeves and dampening elements are described herein. Tool holders described herein define a central longitudinal axis and comprise a tool holder body having a connector portion and a holder portion. The connector portion is structured to engage a rotary machine and the holder portion is disposed opposite the connector portion and has an inner diameter surface comprising a plurality of axial grooves. Tool holders described herein further comprise a tool receiver structured to receive at least a portion of a cutting tool, the tool receiver having an outer diameter surface comprising a plurality of axial grooves. The tool receiver is mounted in the holder portion so as to align the axial grooves of the inner and outer diameter surfaces and define axial sleeves filled with dampening elements.

公开(公告)号：US20170100783A1

公开(公告)日：2017-04-13

申请号：US14877604

申请日：2015-10-07

Applicant: Kennametal Inc.

Inventor： Ruy Frota de Souza Filho

IPC: B23B51/02 ,  B23B51/06

CPC classification number: B23B51/02 ,  B23B51/06 ,  B23B2250/12 ,  B23B2251/02 ,  B23B2251/408 ,  Y10T408/9097

Abstract: A drill has a replaceable cutting head mounted to a shank in an interlocking fashion. The shank has a pocket with at least one flat, vertically-angled retention surface located closer to a rotational axis than at least one driving surface. Similarly, the cutting head has at least one vertically-angled retention surface located closer to the rotational axis of the drill than at least one driven surface. As a result of the relative locations between the surfaces with respect to the rotational axis, the stresses and fatigue imposed on the drill are minimized, thereby prolonging tool life.

公开(公告)号：US20150375305A1

公开(公告)日：2015-12-31

申请号：US14319723

申请日：2014-06-30

Applicant: Kennametal Inc.

Inventor： Ruy Frota de Souza Filho

IPC: B23B29/02

CPC classification number: B23B29/022 ,  B23B27/002 ,  B23B27/007 ,  B23B2250/16 ,  B23B2260/004 ,  Y10T408/76

Abstract: A tuned or tunable boring tool includes a boring bar defining an elongated cavity therein. A distal end of the boring bar is configured to support a tool or cutting insert. The boring tool further includes a dynamic vibration absorber inserted within the elongated cavity of the boring bar. The dynamic vibration absorber includes a mass that vibrates in conjunction with vibration of the boring bar. The mass has a proximal end and a distal end. The dynamic vibration absorber further includes at least one resilient proximal support positioned adjacent to and supporting the proximal end of the mass and at least one distal resilient support positioned adjacent to and supporting the distal end of the mass. The at least one proximal support and at least one distal support have a different stiffness.

Abstract translation: 调谐或可调谐的钻孔工具包括在其中限定细长腔的钻杆。 镗杆的远端构造成支撑工具或切削刀片。 钻孔工具还包括插入镗杆的细长腔内的动态吸振器。 动态振动吸收器包括与镗杆的振动一起振动的质量。 质量具有近端和远端。 所述动态振动吸收器还包括至少一个弹性近端支撑件，其邻近并支撑所述质量块的近端定位，并且至少一个远端弹性支撑件邻近并支撑所述质量块的远端。 所述至少一个近端支撑件和至少一个远侧支撑件具有不同的刚度。

公开(公告)号：US20150314379A1

公开(公告)日：2015-11-05

申请号：US14269808

申请日：2014-05-05

Applicant: Kennametal Inc.

Inventor： Leonid B. Sharivker ,  Sergei V. Boulakhov ,  Christoph Gey ,  Ruy Frota de Souza Filho

IPC: B23C5/10 ,  B23C5/26

CPC classification number: B23C5/10 ,  B23B31/1115 ,  B23C5/26 ,  B23C2210/02 ,  B23C2210/40 ,  B23C2240/32 ,  B23C2260/28 ,  Y10T407/1908 ,  Y10T407/1946

Abstract: A modular cutter head having a holder defining a threaded receiver. The cutter head can be screwed into the threaded receiver. The cutter can comprise an elongated body portion having a cutting end and cutting edge and an elongated coupling portion spaced from the cutting end, with the coupling portion comprising a core and a plurality of generally helically-extending start threads disposed circumferentially about the core. The cutter head may also include a cutting end having a chip flute and an insert seat.

Abstract translation: 具有定义螺纹接收器的支架的模块化刀头。 刀头可以拧入螺纹接收器。 切割器可以包括具有切割端和切割边缘的细长主体部分和与切割端间隔开的细长联接部分，联接部分包括芯部和围绕芯部周向设置的多个大致螺旋形延伸的起始线索。 刀头还可以包括具有芯片槽和插入座的切割端。