公开(公告)号：US20150023744A1

公开(公告)日：2015-01-22

申请号：US13947307

申请日：2013-07-22

Applicant: Kennametal Inc.

Inventor： Qiang Wu ,  Nicholas J. Henry ,  Christoph Gey ,  Horst Manfred Jaeger

IPC: B23B27/00

CPC classification number: B23B27/143 ,  B23B2200/0409 ,  B23B2200/0471 ,  B23B2200/0476 ,  B23B2200/081 ,  B23B2200/087 ,  Y10T407/245

Abstract: A cutting insert includes a polygonal body having an upper chip surface, a bottom surface and peripheral side surfaces extending between the upper chip surface and the bottom surface, the peripheral side surfaces intersecting the upper chip surface to form cutting edges therewith. A plurality of chip dividers are spaced apart about a perimeter of the upper chip surface to divide the chips produced by the cutting edges, each chip divider including a leading chip dividing portion adjacent to the cutting edge and extending generally upwardly from the cutting edge, the leading chip dividing portion having an elongated, rounded face. Adjacent chip dividers define a pocket such that the pockets are configured for promoting curling of chips produced by the cutting edges.

Abstract translation: 切削刀片包括具有上芯片表面，底表面和在上芯片表面和底表面之间延伸的外周侧表面的多边形主体，与上芯片表面相交的周边侧表面与其形成切割边。 多个芯片分配器围绕上芯片表面的周边间隔开以分割由切割边缘产生的切屑，每个切屑分离器包括与切割边缘相邻并且从切割边缘大致向上延伸的引导芯片分割部分， 领先的芯片分割部分具有细长的圆形面。 相邻的芯片分隔器限定一个口袋，使得这些口袋构造成用于促进由切削刃产生的切屑的卷曲。

公开(公告)号：US10144104B2

公开(公告)日：2018-12-04

申请号：US14768362

申请日：2014-02-14

Applicant: Kennametal Inc.

Inventor： Horst Manfred Jaeger

IPC: B21K5/04 ,  B24B19/04 ,  B23B51/02

Abstract: In order, in a drill tip (2) which is provided particularly for a modular drilling tool, to generate a ridge (18) with supporting chamfers (26, 28) in a simple way, a non-round grinding method is provided, in which, proceeding from a starting rotary position (30) which corresponds to a cutting corner position, the radius is first reduced and is subsequently increased again to form the supporting chamfer (28). There is therefore no need for a separate grinding step to form the supporting chamfers (26, 28). The supporting chamfers (26, 28) preferably extend parallel to the longitudinal mid-axis (22) in the axial direction (24) and intersect coiled chucking grooves (26).