公开(公告)号：US12076026B2

公开(公告)日：2024-09-03

申请号：US17113535

申请日：2020-12-07

Applicant: Kennametal Inc.

Inventor： Tim Guter ,  Jürgen Schwägerl

IPC: B23B51/02 ,  A61B17/16 ,  B23B51/00 ,  B23P15/32

CPC classification number: A61B17/1615 ,  B23B51/00 ,  B23P15/32 ,  B23B51/02 ,  B23B2251/18

Abstract: A method for producing a cutting tool, in particular a drill bit, is specified wherein the cutting tool has a front end (F) at the front and a rear end (R) toward the rear, wherein a tool tip is formed on the front end (F), a point thinning is ground at the tool tip with a grinding tool, the point thinning being ground to be narrower toward the front than toward the rear. The point thinning is ground with a constant point thinning angle (AW). Furthermore, a corresponding cutting tool is specified.

公开(公告)号：US20210354210A1

公开(公告)日：2021-11-18

申请号：US17314343

申请日：2021-05-07

Applicant: KENNAMETAL INC.

Inventor： Jürgen Schwägerl ,  Herbert Rudolf Kauper

IPC: B23B51/06 ,  B23B51/02

Abstract: A cutting tool for machining workpieces is disclosed, which comprises a shank portion and a cutting portion, wherein a coolant channel extends along a longitudinal axis from a free end of the shank portion through the cutting tool, which has a peripheral wall and an end wall, wherein the coolant channel has one or more outlet openings in the end wall, through which coolant can exit the cutting tool. Also disclosed is a method for producing a cutting tool.

公开(公告)号：US20210299763A1

公开(公告)日：2021-09-30

申请号：US17212253

申请日：2021-03-25

Applicant: Kennametal Inc.

Inventor： Herbert Rudolf Kauper ,  Jürgen Schwägerl ,  Christian Strauchmann

IPC: B23B51/02

Abstract: The invention relates to a drill comprising a drill tip, wherein the drill tip comprises at least one main cutting edge having a cutting corner, from which the main cutting edge extends to a center, wherein the drill tip comprises at least one additional cutting edge having an additional cutting corner, from which the additional cutting edge extends in the direction of the center, wherein the additional cutting edge is formed only on an outer portion of the drill tip and is thus shorter than the main cutting edge, wherein the additional cutting corner projects beyond the cutting corner.

公开(公告)号：US20240238879A1

公开(公告)日：2024-07-18

申请号：US18411950

申请日：2024-01-12

Applicant: Kennametal Inc.

Inventor： Bernhard Eckl ,  Jürgen Schwägerl

IPC: B23B51/00

CPC classification number: B23B51/0004

Abstract: An apparatus is specified that comprises a rotary tool, wherein the rotary tool extends along a longitudinal axis and in an axial direction, wherein the rotary tool comprises a body, a cutting insert and a clamping rod, wherein the body has a shank on the rear-facing end, for clamping into a bracket, wherein the clamping rod extends through the body in the axial direction, wherein the clamping rod is adapted on the front-facing end to attach the cutting insert, wherein the clamping rod extends rearward towards the shank and can be actuated by means of a tool to attach the cutting insert to, or to detach the latter from, the body, wherein the clamping rod comprises an access hole arranged such that the clamping rod can be actuated while the rotary tool is clamped in the bracket. Further, a method for attaching or detaching a cutting insert on such an apparatus is specified.

公开(公告)号：US20240066611A1

公开(公告)日：2024-02-29

申请号：US18387960

申请日：2023-11-08

Applicant: Kennametal Inc.

Inventor： Christian Strauchmann ,  Jürgen Schwägerl ,  Herbert Rudolf Kauper

IPC: B23B51/02

CPC classification number: B23B51/02 ,  B23B2251/04 ,  B23B2251/40 ,  B23B2260/0725

Abstract: Cutting tool for the rotary machining of workpieces, in particular a twist drill, with a cutting tip which has at least one main cutting edge and at least one free surface, wherein a flank face adjoins the main cutting edge radially to the outside, and wherein a flank angle of the flank face increases in a radially outward direction.

公开(公告)号：US20210085339A1

公开(公告)日：2021-03-25

申请号：US17113535

申请日：2020-12-07

Applicant: Kennametal Inc.

Inventor： Tim Guter ,  Jürgen Schwägerl

IPC: A61B17/16 ,  B23B51/00

Abstract: A method for producing a cutting tool, in particular a drill bit, is specified wherein the cutting tool has a front end (F) at the front and a rear end (R) toward the rear, wherein a tool tip is formed on the front end (F), a point thinning is ground at the tool tip with a grinding tool, the point thinning being ground to be narrower toward the front than toward the rear. The point thinning is ground with a constant point thinning angle (AW). Furthermore, a corresponding cutting tool is specified.

公开(公告)号：US10952746B2

公开(公告)日：2021-03-23

申请号：US16381853

申请日：2019-04-11

Applicant: Kennametal Inc.

Inventor： Tim Guter ,  Jürgen Schwägerl

IPC: B23B51/00 ,  A61B17/16 ,  B23B51/02

Abstract: A method for producing a cutting tool, in particular a drill bit, is specified wherein the cutting tool has a front end (F) at the front and a rear end (R) toward the rear, wherein a tool tip is formed on the front end (F), a point thinning is ground at the tool tip with a grinding tool, the point thinning being ground to be narrower toward the front than toward the rear. The point thinning is ground with a constant point thinning angle (AW). Furthermore, a corresponding cutting tool is specified.

公开(公告)号：US11819931B2

公开(公告)日：2023-11-21

申请号：US17212253

申请日：2021-03-25

Applicant: Kennametal Inc.

Inventor： Herbert Rudolf Kauper ,  Jürgen Schwägerl ,  Christian Strauchmann

IPC: B23B51/02

CPC classification number: B23B51/02 ,  B23B2251/18 ,  B23B2251/241

Abstract: The invention relates to a drill comprising a drill tip, wherein the drill tip comprises at least one main cutting edge having a cutting corner, from which the main cutting edge extends to a center, wherein the drill tip comprises at least one additional cutting edge having an additional cutting corner, from which the additional cutting edge extends in the direction of the center, wherein the additional cutting edge is formed only on an outer portion of the drill tip and is thus shorter than the main cutting edge, wherein the additional cutting corner projects beyond the cutting corner.

公开(公告)号：US11654465B2

公开(公告)日：2023-05-23

申请号：US16285906

申请日：2019-02-26

Applicant: Kennametal Inc.

Inventor： Raouf Ben Amor ,  Augustin Donhardt ,  Tim Guter ,  Bjoern Hoschke ,  Guenther Hoyer ,  Herbert Rudolf Kauper ,  Klaus Roediger ,  Fabian Rosenberger ,  Jürgen Schwägerl

IPC: B21C23/14 ,  B21C25/08 ,  B21C25/02

CPC classification number: B21C23/147 ,  B21C25/02 ,  B21C25/08

Abstract: The invention relates to a method for producing a blank, in particular a blank for the production of a cutting tool, wherein a green body extending in the direction of the extrusion axis is produced from extrusion material by means of an extruder which has an extrusion channel extending along an extrusion axis; wherein the extrusion channel together with a movable mold element forms a die of the extruder; and wherein the mold element is moved relative to the extrusion channel and within said extrusion channel during the extrusion of the green body, whereby the shaping geometry of the die is changed so that the completely extruded green body hereby has a first functional segment and a second functional segment adjacent thereto in the direction of the extrusion axis (4); wherein the two functional segments differ with regard to their geometries impressed by the die.

公开(公告)号：US20210094106A1

公开(公告)日：2021-04-01

申请号：US17031050

申请日：2020-09-24

Applicant: Kennametal Inc.

Inventor： Christian Strauchmann ,  Jürgen Schwägerl ,  Herbert Rudolf Kauper

IPC: B23B51/02

Abstract: Cutting tool for the rotary machining of workpieces, in particular a twist drill, with a cutting tip which has at least one main cutting edge and at least one free surface (24), wherein a flank face adjoins the main cutting edge radially to the outside, and wherein a flank angle of the flank face increases in a radially outward direction.