公开(公告)号：US09481041B2

公开(公告)日：2016-11-01

申请号：US14174641

申请日：2014-02-06

Applicant: Kennametal Inc.

Inventor： Danny Ray Davis ,  Sean Erin Landwehr ,  Russell Lee Yeckley

IPC: B23C5/10

CPC classification number: B23C5/10 ,  B23C2210/0421 ,  B23C2210/0428 ,  B23C2210/0435 ,  B23C2210/203 ,  B23C2210/205 ,  B23C2210/24 ,  B23C2210/28 ,  B23C2226/18 ,  Y10T407/1946 ,  Y10T407/1948 ,  Y10T407/1962 ,  Y10T407/27 ,  Y10T409/303752

Abstract: End mills are disclosed which may be made monolithically of ceramic or other materials. The cutting portions of the end mills have lengths of cut that are no more than twice their cutting diameters and cores which are at least 0.7 times their cutting diameters. Their axial blades have cutting edges with negative radial rake and are separated by helical flutes. Their cutting ends have negative axial rake and are gashed ahead of center and have radial cutting edges with negative rake. Such end mills also have radiused corners and gashes transitioning from radial to axial at a flute. Methods of milling materials using such ceramic end mills are also disclosed.

Abstract translation: 公开了可以由陶瓷或其它材料制成的立铣刀。 端铣刀的切割部分的切割长度不得超过其切割直径的两倍，并且其切割直径的至少为其0.7倍。 它们的轴向叶片具有带负向径向耙的切削刃，并且被螺旋形槽纹分开。 它们的切割端具有负轴向前倾，并且在中心之前被填充，并具有具有负耙的径向切割边缘。 这种立铣刀还具有圆角和凹陷，其在笛纹从径向向轴向转变。 还公开了使用这种陶瓷端铣刀研磨材料的方法。

公开(公告)号：US09862038B2

公开(公告)日：2018-01-09

申请号：US14683692

申请日：2015-04-10

Applicant: Kennametal Inc.

Inventor： Danny Ray Davis ,  Frederick John Palmer

IPC: B23C5/10

CPC classification number: B23C5/10 ,  B23C2210/0492 ,  B23C2210/282

Abstract: A rotary cutting tool with a longitudinal axis includes a shank portion and a cutting portion defining a length of cut. The cutting portion includes a plurality of blades separated by flutes extending along the length of cut. A first blade forms a first helix angle with respect to the longitudinal axis at the cutting tip. A second blade adjacent the first blade forms a second, different helix angle with respect to the longitudinal axis at the cutting tip. The cutting edge of the first blade is formed at a first distance with respect to the cutting edge of the second blade. A helix angle of at least one of the plurality of blades varies along the length of cut and a distance between cutting edges of the first and second blades varies along the length of cut.

公开(公告)号：US20170028482A1

公开(公告)日：2017-02-02

申请号：US14810677

申请日：2015-07-28

Applicant: Kennametal Inc.

Inventor： Sergei Vladimir Boulakhov ,  Leonid Boris Sharivker ,  Danny Ray Davis ,  Frederick John Palmer

IPC: B23C5/10

CPC classification number: B23C5/10 ,  B23C2210/0492 ,  B23C2210/282 ,  B23C2210/405

Abstract: A rotary cutting tool with a longitudinal axis includes a shank portion and a cutting portion defining a length of cut. The cutting portion includes a plurality of blades separated by flutes extending along the length of cut. A first blade forms a first helix angle with respect to the longitudinal axis at the cutting tip. A second blade adjacent the first blade forms a second, different helix angle with respect to the longitudinal axis at the cutting tip. A third blade adjacent the second blade forms a third, different helix angle with respect to the longitudinal axis at the cutting tip. The first, second and third helix angles deviate by at least 2 degrees. The cutting edges of the first, second and third blades have unequal indexing.

Abstract translation: 具有纵向轴线的旋转切削工具包括柄部分和限定切割长度的切割部分。 切割部分包括由沿切割长度延伸的槽纹分开的多个叶片。 第一叶片在切割尖端处相对于纵向轴线形成第一螺旋角。 与第一叶片相邻的第二叶片在切割尖端处相对于纵向轴线形成第二不同的螺旋角。 与第二刀片相邻的第三刀片在切割尖端处相对于纵向轴线形成第三不同的螺旋角。 第一，第二和第三螺旋角度偏离至少2度。 第一，第二和第三叶片的切割刃具有不相等的分度。

公开(公告)号：US20160297012A1

公开(公告)日：2016-10-13

申请号：US14683692

申请日：2015-04-10

Applicant: Kennametal Inc.

Inventor： Danny Ray Davis ,  Frederick John Palmer

IPC: B23C5/10

CPC classification number: B23C5/10 ,  B23C2210/0492 ,  B23C2210/282

Abstract: A rotary cutting tool with a longitudinal axis includes a shank portion and a cutting portion defining a length of cut. The cutting portion includes a plurality of blades separated by flutes extending along the length of cut. A first blade forms a first helix angle with respect to the longitudinal axis at the cutting tip. A second blade adjacent the first blade forms a second, different helix angle with respect to the longitudinal axis at the cutting tip. The cutting edge of the first blade is formed at a first distance with respect to the cutting edge of the second blade. A helix angle of at least one of the plurality of blades varies along the length of cut and a distance between cutting edges of the first and second blades varies along the length of cut.

Abstract translation: 具有纵向轴线的旋转切削工具包括柄部分和限定切割长度的切割部分。 切割部分包括由沿切割长度延伸的槽纹分开的多个叶片。 第一叶片在切割尖端处相对于纵向轴线形成第一螺旋角。 与第一叶片相邻的第二叶片在切割尖端处相对于纵向轴线形成第二不同的螺旋角。 第一叶片的切割刃相对于第二叶片的切割刃形成第一距离。 多个叶片中的至少一个叶片的螺旋角度沿切割长度变化，并且第一和第二叶片的切割边缘之间的距离沿切割长度变化。

公开(公告)号：US20140356081A1

公开(公告)日：2014-12-04

申请号：US13905357

申请日：2013-05-30

Applicant: Kennametal Inc.

Inventor： Danny Ray Davis

IPC: B23C5/10 ,  B23C5/28

CPC classification number: B23C5/10 ,  B23C5/28 ,  B23C2210/045 ,  B23C2210/0457 ,  B23C2210/0485 ,  B23C2210/40 ,  B23C2250/12 ,  Y10T407/14 ,  Y10T407/1948

Abstract: A rotary cutting tool with a longitudinal axis 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 tip includes a corner radius, a first portion formed with a first dish angle, and second portion formed with a second dish angle and a third portion formed with a third dish angle. The trailing face contacts the work during a ramp operation in such a way that the first, second and third portions have a double positive geometry to provide the cutting tool with high ramp angle capability.

Abstract translation: 具有纵向轴线的旋转切割工具包括柄部分，切割部分和切割尖端。 切割部分包括多个叶片和多个凹槽。 每个叶片包括前导面，后表面和在前表面和后表面之间延伸的平台表面。 切割尖端包括角半径，形成有第一盘角的第一部分和形成有第二盘角的第二部分和形成有第三盘角的第三部分。 后斜面在斜坡操作期间接触工件，使得第一，第二和第三部分具有双正的几何形状，以为切割工具提供高斜角能力。

公开(公告)号：US10052700B2

公开(公告)日：2018-08-21

申请号：US14810677

申请日：2015-07-28

Applicant: Kennametal Inc.

Inventor： Sergei Vladimir Boulakhov ,  Leonid Boris Sharivker ,  Danny Ray Davis ,  Frederick John Palmer

IPC: B23C5/10

CPC classification number: B23C5/10 ,  B23C2210/0492 ,  B23C2210/282 ,  B23C2210/405

Abstract: A rotary cutting tool with a longitudinal axis includes a shank portion and a cutting portion defining a length of cut. The cutting portion includes a plurality of blades separated by flutes extending along the length of cut. A first blade forms a first helix angle with respect to the longitudinal axis at the cutting tip. A second blade adjacent the first blade forms a second, different helix angle with respect to the longitudinal axis at the cutting tip. A third blade adjacent the second blade forms a third, different helix angle with respect to the longitudinal axis at the cutting tip. The first, second and third helix angles deviate by at least 2 degrees. The cutting edges of the first, second and third blades have unequal indexing.

公开(公告)号：US09878379B2

公开(公告)日：2018-01-30

申请号：US14693063

申请日：2015-04-22

Applicant: Kennametal Inc.

Inventor： Danny Ray Davis

IPC: B23C5/10 ,  B24B3/02 ,  B24B3/06

CPC classification number: B23C5/10 ,  B23C2210/0435 ,  B23C2210/0457 ,  B23C2210/0478 ,  B23C2210/241 ,  B23C2210/40 ,  B24B3/021 ,  B24B3/06

Abstract: A milling cutter includes a shank and a cutting head attached to the shank. The cutting head has a plurality of helical teeth, each tooth including a cutting tip, a leading face and a rear face. A flute is defined between the leading face of a trailing tooth, and a rear face of an immediately preceding tooth. A gully of the flute has a flute base with a portion that is planar or convex in profile to provide additional volume for effective chip evacuation. A method for manufacturing the milling cutter includes rotating a cylindrical blank about its own longitudinal axis, rotating a disc-shaped flute grinding wheel) about a rotational axis of a flute wheel and moving the grinding wheel in a longitudinal direction so as to form the helical flute with the gully having the flute base with the planar or convex portion in profile.

公开(公告)号：US20140255113A1

公开(公告)日：2014-09-11

申请号：US14174641

申请日：2014-02-06

Applicant: Kennametal Inc.

Inventor： Danny Ray Davis ,  Sean Erin Landwehr ,  Russell Lee Yeckley

IPC: B23C5/10

CPC classification number: B23C5/10 ,  B23C2210/0421 ,  B23C2210/0428 ,  B23C2210/0435 ,  B23C2210/203 ,  B23C2210/205 ,  B23C2210/24 ,  B23C2210/28 ,  B23C2226/18 ,  Y10T407/1946 ,  Y10T407/1948 ,  Y10T407/1962 ,  Y10T407/27 ,  Y10T409/303752

Abstract: End mills are disclosed which may be made monolithically of ceramic or other materials. The cutting portions of the end mills have lengths of cut that are no more than twice their cutting diameters and cores which are at least 0.7 times their cutting diameters. Their axial blades have cutting edges with negative radial rake and are separated by helical flutes. Their cutting ends have negative axial rake and are gashed ahead of center and have radial cutting edges with negative rake. Such end mills also have radiused corners and gashes transitioning from radial to axial at a flute. Methods of milling materials using such ceramic end mills are also disclosed.

Abstract translation: 公开了可以由陶瓷或其它材料制成的立铣刀。 端铣刀的切割部分的切割长度不得超过其切割直径的两倍，并且其切割直径至少为其0.7倍。 它们的轴向叶片具有带负向径向耙的切削刃，并且被螺旋形槽纹分开。 它们的切割端具有负轴向前倾，并且在中心之前被填充，并具有具有负耙的径向切割边缘。 这种立铣刀还具有圆角和凹陷，其在笛纹从径向向轴向转变。 还公开了使用这种陶瓷端铣刀研磨材料的方法。