公开(公告)号：US20140319898A1

公开(公告)日：2014-10-30

申请号：US13871012

申请日：2013-04-26

Applicant: KENNAMETAL INC.

Inventor： Nicholas J. Paros ,  Stephen M. George ,  Glenn W. Sheffler ,  Don C. Rowlett

IPC: E21C35/19

CPC classification number: E21C35/19 ,  E21C35/183

Abstract: A radial cutter bit includes a non-rotatable shank portion, a head portion including a tip region distal from the non-rotatable shank portion, and a cutting insert mounted at the tip region of the head portion. The cutting insert includes a body having a leading face, an opposing trailing face, a first side and a second side. The leading face has a central face portion, a first side face portion extending toward the first side of the body and a second face portion extending toward the second side of the body. The cutting insert further includes a top surface having a relief surface, a T-land surface extending between at least a portion of the leading face and the relief surface of the top surface and a cutting edge formed at the intersection of the T-land surface and the relief surface of the top surface.

Abstract translation: 径向切割刀头包括不可旋转柄部分，头部部分，其包括远离不可旋转柄部分的尖端区域，以及安装在头部的尖端区域处的切削刀片。 切削刀片包括具有前表面，相对的后表面，第一侧和第二侧的主体。 前导面具有中心面部分，朝向身体第一侧延伸的第一侧面部分和朝向身体第二侧延伸的第二面部分。 所述切削刀片还包括具有浮雕表面的顶表面，在所述前表面的至少一部分与所述顶表面的所述浮雕表面之间延伸的T形表面，以及形成在所述T形表面 和顶面的浮雕表面。

公开(公告)号：US20230133391A1

公开(公告)日：2023-05-04

申请号：US17519267

申请日：2021-11-04

Applicant: Kennametal Inc.

Inventor： Leonid B. Sharivker ,  Sergei Boulakhov ,  Stephen M. George ,  John Boyea

IPC: B23C5/10

Abstract: A rotary cutting tool includes a shank portion, a cutting portion, and a cutting tip. The cutting portion includes a plurality of blades and a plurality of flutes. Each blade includes a leading face, a trailing face, and a land surface extending between the leading face and the trailing face. The cutting end includes an end cutting edge having a first end face cutting edge portion formed with a positive, neutral or negative radial angle, a positive dish angle and a negative axial rake angle, and second end face cutting edge portion formed with a highly positive radial angle, a positive dish angle and a negative axial rake angle. The highly positive radial angle of the second end face cutting edge portion enables the rotary cutting tool to perform a ramp operation at very large ramp angles of between about 15-45 degrees.

公开(公告)号：US09085947B2

公开(公告)日：2015-07-21

申请号：US13871002

申请日：2013-04-26

Applicant: Kennametal Inc.

Inventor： Stephen M. George ,  Nicholas J. Paros

IPC: E21B10/58 ,  E21B10/00

CPC classification number: E21B10/58 ,  E21B10/003

Abstract: A rotary drill bit for engaging an earth strata material includes a cutting insert attached to an axial forward end of an elongate drill bit body. The cutting insert includes an elongate insert body rotatable about a central axis with a pair of symmetrical halves symmetrical about the central axis, each symmetrical half comprising: a leading face; a top surface having a primary relief surface; a web thinning gash extending between the leading face and the primary relief surface, the web thinning gash having a debris evacuation portion centrally disposed adjacent the central axis and a distal transition portion disposed adjacent the debris evacuation portion; a first leading cutting edge at the intersection of the leading face and the primary relief surface; and a second leading cutting edge at the intersection of the web thinning gash and the primary relief surface of the top surface.

Abstract translation: 用于接合地层材料的旋转钻头包括附接到细长钻头体的轴向前端的切削刀片。 所述切削刀片包括可围绕中心轴线旋转的细长插入体，所述插入体具有一对围绕所述中心轴线对称的对称半部，每个对称半部包括：前端面; 具有主浮雕表面的顶表面; 在引导面和主浮雕表面之间延伸的幅材间隙，所述幅材变薄缝隙具有邻近所述中心轴线居中设置的碎屑排出部分和邻近所述碎屑排出部分设置的远端过渡部分; 在前表面和主浮雕表面的交叉处的第一导向切割刃; 以及在幅材变薄沟槽和顶表面的主浮雕表面的交叉处的第二前沿切割刃。

公开(公告)号：US20140318870A1

公开(公告)日：2014-10-30

申请号：US13871002

申请日：2013-04-26

Applicant: KENNAMETAL INC.

Inventor： Stephen M. George ,  Nicholas J. Paros

IPC: E21B10/58

CPC classification number: E21B10/58 ,  E21B10/003

Abstract: A rotary drill bit for engaging an earth strata material includes a cutting insert attached to an axial forward end of an elongate drill bit body. The cutting insert includes an elongate insert body rotatable about a central axis with a pair of symmetrical halves symmetrical about the central axis, each symmetrical half comprising: a leading face; a top surface having a primary relief surface; a web thinning gash extending between the leading face and the primary relief surface, the web thinning gash having a debris evacuation portion centrally disposed adjacent the central axis and a distal transition portion disposed adjacent the debris evacuation portion; a first leading cutting edge at the intersection of the leading face and the primary relief surface; and a second leading cutting edge at the intersection of the web thinning gash and the primary relief surface of the top surface.

Abstract translation: 用于接合地层材料的旋转钻头包括附接到细长钻头体的轴向前端的切削刀片。 所述切削刀片包括可围绕中心轴线旋转的细长插入体，所述插入体具有一对围绕所述中心轴线对称的对称半部，每个对称半部包括：前端面; 具有主浮雕表面的顶表面; 在引导面和主浮雕表面之间延伸的幅材间隙，所述幅材变薄缝隙具有中心地邻近中心轴线设置的碎屑排出部分，以及邻近所述碎屑排出部分设置的远端过渡部分; 在前表面和主浮雕表面的交叉处的第一导向切割刃; 以及在幅材变薄沟槽和顶表面的主浮雕表面的交叉处的第二前沿切割刃。

公开(公告)号：US20250153253A1

公开(公告)日：2025-05-15

申请号：US18388891

申请日：2023-11-13

Applicant: Kennametal Inc.

Inventor： Stephen M. George ,  Danny R. Davis

IPC: B23C5/10 ,  B23P15/34

Abstract: A rotary cutting tool includes a shank portion and a cutting portion extending from the shank portion to a cutting tip. The cutting portion has a plurality of blades separated by flutes. Each of the blades includes a relief surface and a radial cutting edge formed at an intersection between a respective flute and the relief surface. The relief surface includes an inner eccentric relief immediately adjacent the radial cutting edge and an outer eccentric relief immediately adjacent the inner eccentric relief. The inner eccentric relief is formed with an inner eccentric relief angle, β, of less than about 5 degrees, and wherein the outer eccentric relief is formed with an outer eccentric relief angle, β, of between about 5 degrees and about 15 degrees. A method of making the rotary cutting tool is also described.

公开(公告)号：US09428968B2

公开(公告)日：2016-08-30

申请号：US13871006

申请日：2013-04-26

Applicant: Kennametal Inc.

Inventor： Nicholas J. Paros ,  Stephen M. George ,  Glenn W. Sheffler ,  Don C. Rowlett

IPC: E21B10/58

CPC classification number: E21B10/58

Abstract: A rotary drill bit for engaging an earth strata material includes an elongate drill bit body having an axial forward end and an axial rearward end, and a cutting insert attached to the axial forward end of the elongate drill bit body. The cutting insert has an elongate insert body rotatable about a central axis and includes a pair of symmetrical halves symmetrical about the central axis, each symmetrical half including a leading face, a top surface having a relief surface, a T-land surface extending between the leading face and the relief surface and a cutting edge formed at the intersection of the T-land surface and the relief surface. The cutting edge can have a negative axial rake angle. The relief surface can include a primary relief surface and a secondary relief surface.

Abstract translation: 用于接合地层材料的旋转钻头包括具有轴向前端和轴向后端的细长钻头体，以及附接到细长钻头体的轴向前端的切削刀片。 切削刀片具有可围绕中心轴线旋转的细长插入体，并且包括一对对称的中心轴对称半部，每个对称半部分包括前表面，顶表面具有浮雕表面，T表面在 前表面和浮雕表面以及形成在T-land表面和浮雕表面交叉处的切割刃。 切削刃可以具有负轴向前角。 浮雕表面可以包括主浮雕表面和次级浮雕表面。

公开(公告)号：US20140319897A1

公开(公告)日：2014-10-30

申请号：US13871023

申请日：2013-04-26

Applicant: KENNAMETAL INC.

Inventor： Nicholas J. Paros ,  Stephen M. George ,  Glenn W. Sheffler ,  Don C. Rowlett

IPC: E21C35/183

CPC classification number: E21C35/183 ,  E21B10/58 ,  E21C2035/1816

Abstract: A flat cutter bit for engaging an earth strata material includes a non-rotatable shank portion, a head portion integrally formed with the non-rotatable shank portion and including a tip region distal from the non-rotatable shank portion, and a cutting insert mounted at the tip region of the head portion. The cutting insert includes a body having an angled leading face, a top surface having a relief surface, a T-land surface extending between the angled leading face and the relief surface of the top surface and a cutting edge formed at the intersection of the T-land surface and the relief surface of the top surface.

Abstract translation: 用于接合地层材料的扁平铣刀头包括不可旋转的柄部分，与不可旋转柄部一体形成的头部，并且包括远离不可旋转柄部的尖端区域，以及安装在 头部的尖端区域。 所述切削刀片包括具有成角度的前表面的主体，具有浮雕表面的顶表面，在所述倾斜的前表面和所述顶表面的所述浮雕表面之间延伸的T形表面，以及形成在所述T 地面和顶面的浮雕表面。

公开(公告)号：US20140318871A1

公开(公告)日：2014-10-30

申请号：US13871006

申请日：2013-04-26

Applicant: KENNAMETAL INC.

Inventor： Nicholas J. Paros ,  Stephen M. George ,  Glenn W. Sheffler ,  Don C. Rowlett

IPC: E21B10/58

CPC classification number: E21B10/58

Abstract: A rotary drill bit for engaging an earth strata material includes an elongate drill bit body having an axial forward end and an axial rearward end, and a cutting insert attached to the axial forward end of the elongate drill bit body. The cutting insert has an elongate insert body rotatable about a central axis and includes a pair of symmetrical halves symmetrical about the central axis, each symmetrical half including a leading face, a top surface having a relief surface, a T-land surface extending between the leading face and the relief surface and a cutting edge formed at the intersection of the T-land surface and the relief surface. The cutting edge can have a negative axial rake angle. The relief surface can include a primary relief surface and a secondary relief surface.

Abstract translation: 用于接合地层材料的旋转钻头包括具有轴向前端和轴向后端的细长钻头体，以及附接到细长钻头体的轴向前端的切削刀片。 切削刀片具有可围绕中心轴线旋转的细长插入体，并且包括一对对称的中心轴对称半部，每个对称半部分包括前表面，顶表面具有浮雕表面，T表面在 前表面和浮雕表面以及形成在T-land表面和浮雕表面交叉处的切割刃。 切削刃可以具有负轴向前角。 浮雕表面可以包括主浮雕表面和次级浮雕表面。

公开(公告)号：US20140319261A1

公开(公告)日：2014-10-30

申请号：US13871029

申请日：2013-04-26

Applicant: KENNAMETAL INC.

Inventor： Nicholas J. Paros ,  Stephen M. George ,  Glenn W. Sheffler ,  Don C. Rowlett

IPC: A01G23/06

CPC classification number: A01G23/067

Abstract: A stump grinding cutter bit includes a non-rotatable shank portion, a head portion integrally formed with the non-rotatable shank portion and including a tip region distal from the non-rotatable shank portion, and a cutting insert mounted at the tip region of the head portion. The cutting insert includes: a body having a top surface, a leading face, an opposing trailing face, a first side and a second side; a T-land surface extending between the leading face and the top surface and extending between the leading face and the first side and second side; and a cutting edge formed at the intersection of the T-land surface and the top surface and at the intersection of the T-land surface and the first side and the second side.

Abstract translation: 残端研磨刀头包括不可旋转柄部，与不可旋转柄部一体形成的头部，并且包括远离不可旋转柄部的尖端区域，以及安装在刀片部分的尖端区域的切削刀片 头部。 切削刀片包括：具有顶表面，前表面，相对后表面，第一侧和第二侧的主体; 在所述前表面和所述顶表面之间延伸并且在所述前表面与所述第一侧面和第二侧之间延伸的T表面表面; 以及形成在T-land表面和顶表面以及T-land表面与第一侧和第二侧交点处的交点处的切削刃。

公开(公告)号：US20140318872A1

公开(公告)日：2014-10-30

申请号：US13871009

申请日：2013-04-26

Applicant: KENNAMETAL INC.

Inventor： Nicholas J. Paros ,  Stephen M. George ,  Glenn W. Sheffler ,  Don C. Rowlett

IPC: E21B10/58

CPC classification number: E21B10/58 ,  E21B10/42

Abstract: A two-prong rotary drill bit for engaging an earth strata material includes a drill bit body having an axis of rotation, the drill bit body having a head portion at an axial forward end and a shank portion at an axial rearward end, the head portion having two mounting arms offset from the axis of rotation of the drill bit body. The two-prong rotary drill bit also includes a cutting insert attached to each mounting arm at the axial forward end of the drill bit body. Each cutting insert includes a leading face facing in the direction of rotation, a top surface having a relief surface, a T-land surface extending between the leading face and the relief surface of the top surface and a cutting edge formed at the intersection of the T-land surface and the relief surface of the top surface.

Abstract translation: 用于接合地层材料的双头旋转钻头包括具有旋转轴线的钻头体，所述钻头体在轴向前端具有头部，在轴向后端具有柄部，所述头部 具有从钻头体的旋转轴线偏离的两个安装臂。 双头旋转钻头还包括在钻头体的轴向前端附接到每个安装臂的切削刀片。 每个切削刀片包括面向旋转方向的前表面，具有浮雕表面的顶表面，在前表面和顶表面的浮雕表面之间延伸的T形表面表面和形成在该顶表面的交叉点处的切割刃 T表面和顶面的浮雕表面。