公开(公告)号：US20220410285A1

公开(公告)日：2022-12-29

申请号：US17359977

申请日：2021-06-28

Applicant: Kennametal Inc.

Inventor： Ruy Frota de Souza Filho ,  Marcelo Euripedes Silva ,  Nicholas J. Henry

IPC: B23B51/02

Abstract: A rotary cutting tool with enhanced bump-off capability is disclosed. The cutting tool includes a tool shank having a pocket. A replaceable cutting head is at least partially disposed within the pocket of the tool shank with an interference fit. A coupling pin assembly is at least partially received within a bore of the tool shank. The coupling pin assembly comprises a sleeve member and a coupling pin at least partially disposed within the sleeve member. The sleeve member includes an upper portion and a lower portion having a non-circular cross-sectional shape with a bump-off surface. An actuation screw contacts the coupling pin assembly and causes the replaceable cutting head to move relative to the tool shank. The bump-off surface of the lower portion of the sleeve member extends radially outward with respect to the coupling pin by a distance, D, thereby providing enhanced bump-off capability.

公开(公告)号：US20240300029A1

公开(公告)日：2024-09-12

申请号：US18182352

申请日：2023-03-12

Applicant: KENNAMETAL INC.

Inventor： Marcelo Euripedes Silva ,  Pavel Pecher

IPC: B23B29/12

CPC classification number: B23B29/12 ,  B23B2200/3627 ,  B23B2205/18

Abstract: A cutting system may include a tool and a stationary fixture. The tool may include a cam connected with a cutting insert. The stationary fixture may be spaced apart from the tool. The stationary fixture may include a moveable indexing pin moveable relative to the stationary fixture. The cam of the tool may be configured to be moved into contact with the moveable indexing pin of the stationary fixture, and the moveable indexing pin of the stationary fixture may be configured to cause the cam to rotate thereby indexing the cutting insert.

公开(公告)号：US20240300042A1

公开(公告)日：2024-09-12

申请号：US18182351

申请日：2023-03-12

Applicant: KENNAMETAL INC.

Inventor： Marcelo Euripedes Silva ,  Pavel Pecher

IPC: B23F23/08

CPC classification number: B23F23/08

Abstract: A cutting system may include a tool and a stationary fixture. The tool may include a cam connected with a cutting insert. The stationary fixture may be spaced apart from the tool. The stationary fixture may include a gear moveable within the stationary fixture. The cam of the tool may be configured to be moved into contact with the gear of the stationary fixture. The stationary fixture may be configured to index the cutting insert.

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

IPC: B23B51/00 ,  B23B27/16

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.

公开(公告)号：US11883888B2

公开(公告)日：2024-01-30

申请号：US17359977

申请日：2021-06-28

Applicant: Kennametal Inc.

Inventor： Ruy Frota de Souza Filho ,  Marcelo Euripedes Silva ,  Nicholas J. Henry

IPC: B23B51/02

CPC classification number: B23B51/02 ,  B23B2231/0204 ,  B23B2251/02 ,  B23B2251/082 ,  B23B2251/408 ,  B23B2251/50

Abstract: A rotary cutting tool with enhanced bump-off capability is disclosed. The cutting tool includes a tool shank having a pocket. A replaceable cutting head is at least partially disposed within the pocket of the tool shank with an interference fit. A coupling pin assembly is at least partially received within a bore of the tool shank. The coupling pin assembly comprises a sleeve member and a coupling pin at least partially disposed within the sleeve member. The sleeve member includes an upper portion and a lower portion having a non-circular cross-sectional shape with a bump-off surface. An actuation screw contacts the coupling pin assembly and causes the replaceable cutting head to move relative to the tool shank. The bump-off surface of the lower portion of the sleeve member extends radially outward with respect to the coupling pin by a distance, D, thereby providing enhanced bump-off capability.

公开(公告)号：US11471952B2

公开(公告)日：2022-10-18

申请号：US16824537

申请日：2020-03-19

Applicant: Kennametal Inc.

Inventor： Marcelo Euripedes Silva ,  Ruy Frota de Souza Filho

IPC: B23B51/02 ,  B23B27/16 ,  B23B51/12

Abstract: A rotary cutting tool includes a tool shank, a replaceable cutting head mounted on the tool shank, a coupling pin, and an actuation member. In one embodiment, the coupling pin has a cylindrical portion with a reduced-diameter portion defined by a pair of angled side walls separated by a bottom surface for cooperating with a non-threaded portion at one end of the actuation member. In another embodiment, the coupling pin has a cylindrical portion with a notch with a pair of side walls for cooperating with a frustoconical member at one end of the actuation member. When assembled, a pair of V-shaped contact surfaces on the cutting head engage a pair of oppositely facing V-shaped contact surfaces on the tool shank to provide stability against the momentum created by cutting forces in two different directions and securely hold the cutting head in place during machining operations.

公开(公告)号：US20240042530A1

公开(公告)日：2024-02-08

申请号：US18376042

申请日：2023-10-03

Applicant: Kennametal Inc.

Inventor： Ruy Frota de Souza Filho ,  Marcelo Euripedes Silva ,  Nicholas J. Henry

IPC: B23B51/02

CPC classification number: B23B51/02 ,  B23B2231/0204 ,  B23B2251/408 ,  B23B2251/082

Abstract: A rotary cutting tool with enhanced bump-off capability is disclosed. The cutting tool includes a tool shank having a pocket. A replaceable cutting head is at least partially disposed within the pocket of the tool shank with an interference fit. A coupling pin assembly is at least partially received within a bore of the tool shank. The coupling pin assembly comprises a sleeve member and a coupling pin at least partially disposed within the sleeve member. The sleeve member includes an upper portion and a lower portion having a non-circular cross-sectional shape with a bump-off surface. An actuation screw contacts the coupling pin assembly and causes the replaceable cutting head to move relative to the tool shank. The bump-off surface of the lower portion of the sleeve member extends radially outward with respect to the coupling pin by a distance, D, thereby providing enhanced bump-off capability.

公开(公告)号：US20230022019A1

公开(公告)日：2023-01-26

申请号：US17380734

申请日：2021-07-20

Applicant: Kennametal Inc.

Inventor： Marcelo Euripedes Silva ,  Ruy Frota

IPC: B23B51/00

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.

公开(公告)号：US20210291280A1

公开(公告)日：2021-09-23

申请号：US16824537

申请日：2020-03-19

Applicant: Kennametal Inc.

Inventor： Marcelo Euripedes Silva ,  Ruy Frota de Souza Filho

IPC: B23B27/16 ,  B23B51/12

Abstract: A rotary cutting tool includes a tool shank, a replaceable cutting head mounted on the tool shank, a coupling pin, and an actuation member. In one embodiment, the coupling pin has a cylindrical portion with a reduced-diameter portion defined by a pair of angled side walls separated by a bottom surface for cooperating with a non-threaded portion at one end of the actuation member. In another embodiment, the coupling pin has a cylindrical portion with a notch with a pair of side walls for cooperating with a frustoconical member at one end of the actuation member. When assembled, a pair of V-shaped contact surfaces on the cutting head engage a pair of oppositely facing V-shaped contact surfaces on the tool shank to provide stability against the momentum created by cutting forces in two different directions and securely hold the cutting head in place during machining operations.