-
公开(公告)号：US20180250755A1
公开(公告)日：2018-09-06
申请号：US15448427
申请日：2017-03-02
Applicant: Kennametal Inc.
Inventor： Stephen Michael George
IPC: B23B51/02
CPC classification number: B23B51/02 , B23B2251/04 , B23B2251/202 , B23B2251/282 , B23B2251/408 , Y10T408/9097
Abstract: A twist drill having a shaft with a longitudinal axis, wherein the cutting tool includes a plurality of flutes extending about the longitudinal shaft along a helix angle and a plurality of lands adjacent the flutes. Each land has a cutting edge adjacent a corresponding flute and a margin (i.e. relief surface). A cutting point is adjacent a forward end of the shaft. A first, second and third forward cutting surfaces are adjacent the first, second and third cutting edges, respectively, and extend proximate the cutting point axially rearward for a predetermined length about the longitudinal axis of the shaft. The cutting edges are unequally angularly spaced from each other, and each forward cutting surface has a primary relief angle that are unequal to each other.
-
Patent Agency Ranking
公开(公告)号：US20180345394A1
公开(公告)日：2018-12-06
申请号：US15609222
申请日：2017-05-31
Applicant: Kennametal Inc.
Inventor： Yan Yan , Stephen Michael George
Abstract: A spiral flute tap includes a body having an axial forward end and an axial rearward end. The body has a cylindrical shank portion adjacent the axial rearward end, a threaded fluted portion adjacent the axial forward end, a non-threaded fluted portion between the cylindrical shank portion and the threaded fluted portion, and a central, longitudinal axis. The spiral flute tap further includes a plurality of helical flutes formed at a helix angle, HA, with respect to the central, longitudinal axis of the tap that continuously increases in magnitude in the threaded fluted portion. In other words, the lead of the plurality of helical flutes continuously decreases in magnitude in a rearward direction for a predetermined distance. In one example, the helix angle, HA, varies at a rate of between 0.5 degrees/mm to 4.0 degrees/mm. A method of making the spiral flute tap is also disclosed.
-
公开(公告)号：US20160236307A1
公开(公告)日：2016-08-18
申请号：US14623213
申请日：2015-02-16
Applicant: Kennametal Inc.
Inventor： Herbert Rudolf KAUPER , Julia Tempelmeier , Stephen Michael George
CPC classification number: B23P15/32 , B23B51/00 , B23B2222/92 , B23B2250/12 , B23P15/28
Abstract: In one aspect, blanks for rotary tooling applications are described herein. Such blanks can employ architectures realizing material efficiencies and temporal efficiencies when processed into rotary cutting tools. For example, a rotary cutting tool blank described herein comprises a plurality of interior channels extending along a longitudinal axis of the blank, the interior channels having radial positioning for external exposure along an axial length of cut of the rotary cutting tool upon introduction flutes to the blank.
Abstract translation: 在一个方面，这里描述了用于旋转工具应用的坯料。 这样的坯料可以采用当加工成旋转切割工具时实现材料效率和时间效率的架构。 例如，本文所述的旋转切割工具坯件包括沿着坯件的纵向轴线延伸的多个内部通道，内部通道具有径向定位，用于沿着旋转切削工具的轴向切割长度进行外部暴露， 空白。
-
公开(公告)号：US10766083B2
公开(公告)日：2020-09-08
申请号：US15609222
申请日：2017-05-31
Applicant: Kennametal Inc.
Inventor： Yan Yan , Stephen Michael George
Abstract: A spiral flute tap includes a body having an axial forward end and an axial rearward end. The body has a cylindrical shank portion adjacent the axial rearward end, a threaded fluted portion adjacent the axial forward end, a non-threaded fluted portion between the cylindrical shank portion and the threaded fluted portion, and a central, longitudinal axis. The spiral flute tap further includes a plurality of helical flutes formed at a helix angle, HA, with respect to the central, longitudinal axis of the tap that continuously increases in magnitude in the threaded fluted portion. In other words, the lead of the plurality of helical flutes continuously decreases in magnitude in a rearward direction for a predetermined distance. In one example, the helix angle, HA, varies at a rate of between 0.5 degrees/mm to 4.0 degrees/mm. A method of making the spiral flute tap is also disclosed.
-
公开(公告)号：US10195675B2
公开(公告)日：2019-02-05
申请号：US15448427
申请日：2017-03-02
Applicant: Kennametal Inc.
Inventor： Stephen Michael George
IPC: B23B51/02
Abstract: A twist drill having a shaft with a longitudinal axis, wherein the cutting tool includes a plurality of flutes extending about the longitudinal shaft along a helix angle and a plurality of lands adjacent the flutes. Each land has a cutting edge adjacent a corresponding flute and a margin (i.e. relief surface). A cutting point is adjacent a forward end of the shaft. A first, second and third forward cutting surfaces are adjacent the first, second and third cutting edges, respectively, and extend proximate the cutting point axially rearward for a predetermined length about the longitudinal axis of the shaft. The cutting edges are unequally angularly spaced from each other, and each forward cutting surface has a primary relief angle that are unequal to each other.
-
公开(公告)号：US09643264B2
公开(公告)日：2017-05-09
申请号：US13950407
申请日：2013-07-25
Applicant: Kennametal Inc.
Inventor： Ruy Frota De Souza , Leonid B. Sharivker , Sergei Boulakhov , Christoph Gey , Yosi Harush , Alan Bookheimer , Uzi Levy , Stephen Michael George
CPC classification number: B23C5/109 , B23B31/11 , B23B51/00 , B23B2251/02 , B23C5/10 , B23C2210/02 , B23C2210/03 , B23C2240/32 , F16B39/30 , Y10T407/1906 , Y10T408/907 , Y10T408/9098
Abstract: A rotary cutting tool includes a cutter of generally cylindrical shape disposed about a central longitudinal axis. The cutter has a first end having an active fluted portion and an opposite second end, the second end having a male threaded portion disposed thereabout. The cutting tool further includes a shank of generally cylindrical shape disposed about the central longitudinal axis, the shank having a recessed female threaded portion formed in a first end. The male threaded portion includes a number of threads disposed at a first pitch and the female threaded portion includes a number of threads disposed at a second pitch different than the first pitch. The cutter and the shank are selectively coupled via threaded engagement of the male threaded portion and the female threaded portion.
-
-
-
-
-
Search Results
6
records
(took 0.009 seconds)
