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公开(公告)号：US20150258612A1
公开(公告)日：2015-09-17
申请号：US14211950
申请日：2014-03-14
Applicant: Kennametal Inc.
Inventor： Ruy Frota de Souza Filho
CPC classification number: B23B29/022 , B23B27/002 , B23B27/007 , B23B2222/80 , B23B2226/275 , B23B2250/16 , B23P15/28 , C23C24/103 , Y10T408/76 , Y10T408/78
Abstract: A tunable or tuned boring bar having increased stiffness is provided. Increasing the stiffness of the bar increases the natural frequency, thereby reducing directional deformation of the bar during use. The tunable boring bar includes a distal portion configured to support a tool, a proximal portion configured for attachment to a support structure of a metalworking machine, and a body, which is at least partially tubular, extending between the proximal portion and the distal portion. The tubular portion of the body has an elongated cylindrical cavity. The body of the boring bar includes a core layer formed from a first material and a coating layer formed from a second material. The second material has a higher modulus of elasticity than the first material. In certain configurations, the coating layer is bonded to the core layer by cladding, welding, chemical adhesives, chemical vapor deposition, pulsated plasma diffusion, or combinations thereof.
Abstract translation: 提供了具有增加的刚度的可调谐或调谐的镗杆。 提高杆的刚度增加了固有频率，从而减少了在使用过程中杆的方向变形。 可调节钻杆包括构造成支撑工具的远侧部分，被配置为附接到金属加工机的支撑结构的近端部分，以及在近端部分和远端部分之间延伸的至少部分管状的主体。 本体的管状部分具有细长的圆柱形空腔。 镗杆的主体包括由第一材料形成的芯层和由第二材料形成的涂层。 第二种材料具有比第一种材料更高的弹性模量。 在某些构造中，涂层通过包层，焊接，化学粘合剂，化学气相沉积，脉动等离子体扩散或其组合结合到芯层。
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公开(公告)号：US20250128334A1
公开(公告)日：2025-04-24
申请号：US18383213
申请日：2023-10-24
Applicant: Kennametal Inc.
Inventor： Ruy Frota de Souza Filho
IPC: B23B27/10
Abstract: Toolholders that have a movable coolant pipe are described. An example toolholder has a tool body and a coolant pipe. The tool body is rotatable around a central axis and has a coolant channel, a tool body passageway, and a chamber. The chamber extends from the tool body passageway toward the coolant channel. The coolant pipe is disposed within the chamber and has a coolant pipe first end, a coolant pipe second end, and a coolant pipe portion. The coolant pipe portion extends from the coolant pipe second end toward the coolant pipe first end. The coolant pipe is movable between a resting position and a deflected position. In the resting position, the coolant pipe portion is disposed a first distance from the central axis. In the deflected position, the coolant pipe portion is disposed a second distance from the central axis that is different than the first distance.
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公开(公告)号：US20250033123A1
公开(公告)日：2025-01-30
申请号：US18226538
申请日：2023-07-26
Applicant: Kennametal Inc.
Inventor： Ruy Frota de Souza Filho , Alexander Kroedel , Kacie Watson
Abstract: Hydraulic chuck assemblies for receiving tool shanks are disclosed. The hydraulic chuck assembly comprises a tool support member, a clamping tube, and an expansion sleeve. The clamping tube may be integral to or separate from and attached to the tool support member. The clamping tube comprises slots on the radial outer surface to provide torque transfer. The expansion sleeve comprises a generally cylindrical body, an integral flange, and a torque transfer projection. The torque transfer projection extends radially outward from the outer wall of the body below the integral flange. The expansion sleeve further comprises a pressure chamber in fluid communication with a pressurized fluid system in the tool support member. During operation, a pressure adjustment screw in the tool support member communicates with the pressurized fluid chamber of the expansion sleeve to clamp a tool shank.
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公开(公告)号：US11919094B2
公开(公告)日：2024-03-05
申请号：US17380734
申请日：2021-07-20
Applicant: Kennametal Inc.
Inventor： Marcelo Euripedes da Silva , Ruy Frota de Souza Filho
IPC: B23B51/00
CPC classification number: B23B51/00 , B23B51/0003 , B23B51/0004 , B23B2251/02 , B23B2251/50
Abstract: A modular drill apparatus (100) includes: a shank (110) having a pocket (112); a cylindrical post (117) centrally secured within a bottom (114) of the pocket (112); a cutting tip (130) including a lower portion (131) including a central bore (136) which receives the cylindrical post (117), an upper portion (132) and a channel (134) therebetween; and an insert assembly (150) interfitted within and supported by the channel (134), the insert assembly (150) being expandable along a length thereof for securing the cutting tip (130) to the shank (110) within the pocket (112) by providing an interference fit and retractable along the length thereof for releasing the cutting tip (130) from the pocket (112) by overcoming the interference fit.
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公开(公告)号：US20230302553A1
公开(公告)日：2023-09-28
申请号：US17706265
申请日：2022-03-28
Applicant: Kennametal Inc.
Inventor： Ruy Frota de Souza Filho
IPC: B23C5/00
CPC classification number: B23C5/003
Abstract: A rotary cutting tool includes a tool body including a shank portion and a cutting portion adjoining the shank portion. The cutting portion has a plurality of blades separated by helically twisted flutes. A tunable vibration absorber is disposed within an internal cavity formed in the cutting portion and has a shape that follows the helically twisted flutes. The tunable vibration absorber includes an absorber mass and a resilient material disposed between the absorber mass and an outer wall of the internal cavity. In one aspect, the tunable vibration absorber is tuned to a desired frequency by selecting the mechanical properties of the absorber mass and the resilient material. In another aspect, the tunable vibration absorber is tuned by controlling a pressure of fluid within a main internal fluid cavity disposed within the tunable vibration absorber.
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Patent Agency Ranking
公开(公告)号：US20230294179A1
公开(公告)日：2023-09-21
申请号：US17696975
申请日：2022-03-17
Applicant: Kennametal Inc.
Inventor： Marcelo Euripedes da Silva , Ruy Frota de Souza Filho , Michael Hacker , Horst Jaeger , Eduard Ach , Norbert Baumer
IPC: B23B29/034
CPC classification number: B23B29/03403
Abstract: A modular boring head includes a tubular main body having an internal thread with a first pitch and a pair of axially extending cantilevered members. A movable rod engages the tubular main body such that the movable rod is movable with respect to the tubular main body in an axial direction, D. The movable rod has an internal thread with a second pitch different than the first pitch. A leadscrew is disposed within the tubular main body and has a plurality of gear teeth. Rotation of the leadscrew causes the pair of axially extending cantilevered members of the tubular main body to cooperatively engage with the plurality of gear teeth of the leadscrew in such a manner so as to produce an audible and tactile click, each click being indicative of a distance the movable rod is displaced with respect to the tubular main body.
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公开(公告)号：US20230226624A1
公开(公告)日：2023-07-20
申请号：US18155651
申请日：2023-01-17
Applicant: KENNAMETAL INC.
Inventor： Bharath Arumugam , Padmakumar Muthuswamy , Ruy Frota de Souza Filho
IPC: B23C5/22
CPC classification number: B23C5/2243 , B23C5/2208 , B23C2210/165
Abstract: A milling tool cutter includes a tool body, a plurality of cutting inserts, a plurality of clamping studs, a clamping ring, and a detachable fastening member. The tool body has a plurality of pockets disposed circumferentially around the tool body. Each of the cutting inserts is disposed in one of the respective pockets. Each of the clamping studs is attached to one of the respective cutting inserts. The clamping ring is disposed within the tool body. The clamping ring includes a face surface, a seating surface, and a circumferential outer surface extending between the face surface and the seating surface. The seating surface sits against the plurality of clamping studs. The detachable fastening member is disposed in an attached state fixedly attaching the clamping ring to the tool body causing the clamping studs and their respective cutting inserts to be fixedly attached to the tool body.
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公开(公告)号：US20210316376A1
公开(公告)日：2021-10-14
申请号：US17347756
申请日：2021-06-15
Applicant: Kennametal Inc.
Inventor： Ruy Frota de Souza Filho , Xiangdong D. Fang , Iranna Shidrameshetra
Abstract: A rotary cutting tool includes a main body, a shank portion having a rearward end, and a flute portion having a forward end with one or more flanks. One or more connecting fluid holes are in fluid communication with a central fluid hole and terminates at a flank at the forward end of the cutting tool. One or more twisted fluid holes extend through a lobe in the flute portion and terminates at a flank at the forward end of the cutting tool. A cross-sectional shape of the connecting fluid holes and the twisted fluid holes is selected to provide enhanced delivery of fluid to the cutting edge. In one aspect, the rotary cutting tool is a modular drill and the flute portion has a pocket for holding a replaceable cutting insert.
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公开(公告)号：US10799958B2
公开(公告)日：2020-10-13
申请号：US15681811
申请日：2017-08-21
Applicant: Kennametal Inc.
Inventor： Manuel Wacinski , Horst Jaeger , Juergen Schwaegerl , Ruy Frota de Souza Filho
Abstract: A modular rotary cutting tool includes a cutting head for insertion into a support. The cutting head has a coupling pin having torque surfaces and clamping surfaces formed on its outer peripheral surface. The coupling pin is divided into a front pin part and a rear pin part. The front pin part is defined by a circumferential groove. Stop surfaces for an axial pullout prevention are formed between the front pin part and the rear pin part. The torque surfaces and the clamping surfaces are arranged in different pin parts. For example, the clamping surfaces are preferably formed on the front pin part and the torque surfaces are preferably formed on the rear pin part. The clamping surfaces taper radially inward in a direction of the front cutting part at an angle of inclination, α2, with respect to the axis of rotation. Other variants and embodiments are broadly contemplated herein.
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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.
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.
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