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公开(公告)号：US20210162516A1
公开(公告)日：2021-06-03
申请号：US16700266
申请日：2019-12-02
申请人： Kennametal Inc.
IPC分类号： B23C1/02
摘要： A rotary cutting tool includes a cutting head having a plurality of insert-receiving pockets for radially mounting a first type of cutting insert in a first cutting region and for tangentially mounting a second type of cutting insert in a second cutting region. The first cutting region has a first length, L1, and the second cutting region has a second length, L2, that is greater in magnitude than the first length, L1. The two types of cutting inserts provides a hybrid cutting insert design in which the first type of cutting inserts provide an increased chip gash volume for effective chip evacuation, and the second type of cutting inserts provide an increased core diameter to minimize deflection of the rotary cutting tool.
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公开(公告)号：US20190210124A1
公开(公告)日：2019-07-11
申请号：US15864600
申请日：2018-01-08
申请人： Kennametal Inc.
CPC分类号： B23C5/202 , B23C5/109 , B23C5/207 , B23C5/22 , B23C5/2221 , B23C2200/0416 , B23C2200/0438 , B23C2200/08 , B23C2200/125 , B23C2200/168 , B23C2210/0414 , B23C2210/0428 , B23C2210/045 , B23C2210/28 , B23C2226/27 , B23C2240/24
摘要： A compression milling cutter includes a shank and a front cutting portion that terminates at a leading end of the milling cutter. The front cutting portion has a first circumferential row of one or more insert receiving pockets proximate a leading end of the milling cutter, and a second circumferential row of one or more insert receiving pockets, each insert receiving pocket configured to receive a respective indexable cutting insert. The cutting insert mounted in the first circumferential row has a positive axial rake angle, A, and the indexable cutting insert mounted in an insert pocket of the second circumferential row has a negative axial rake angle, B. Because of the different axial rake angles, chips generated during a machining operation flow in opposite directions, thereby creating a compression zone disposed between the first and second circumferential rows. This compression zone replicates the cutting action of a solid end mill, particularly when machining fiber reinforced plastic materials.
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公开(公告)号：US20160074948A1
公开(公告)日：2016-03-17
申请号：US14483408
申请日：2014-09-11
申请人： KENNAMETAL INC.
IPC分类号： B23C5/28
CPC分类号： B23C5/28 , B23C5/006 , B23C2250/12 , B23C2260/72 , B23Q11/1023
摘要： A rotary cutting tool includes a cutter body, a coolant cap, and a retaining ring for removably securing the coolant cap to the cutter body. The coolant cap includes an outer surface, an inner surface and a generally cylindrical outer surface extending between the outer surface and the inner surface. The retaining ring is disposed within a retaining ring notch of the cutter body such that the outer surface of the coolant cap contacts the retaining ring when high pressure coolant is introduced into the cutter body to removably secure the coolant cap to the cutter body.
摘要翻译： 旋转切削工具包括切割器主体，冷却剂盖和用于将冷却剂帽可移除地固定到切割器主体的保持环。 冷却剂盖包括在外表面和内表面之间延伸的外表面，内表面和大致圆柱形的外表面。 保持环设置在切割器主体的保持环凹口内，使得当高压冷却剂被引入刀体时，冷却剂帽的外表面与保持环接触，以将冷却剂盖可移除地固定到刀体上。
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公开(公告)号：US09764394B2
公开(公告)日：2017-09-19
申请号：US14246919
申请日：2014-04-07
申请人： Kennametal Inc.
CPC分类号： B23C5/003 , B23C5/006 , B23C5/109 , B23C2250/12 , B23C2250/16 , Y10T407/14 , Y10T407/1904
摘要： A rotary cutting tool includes a cutter body having a head, a shank, and a cavity extending along a central, longitudinal axis of the cutter body. The head includes at least one cutting insert mounted in a pocket adjacent to a chip groove. A stiffening device includes a plurality of slugs with high compressive strength disposed within the cavity, and a first compression screw threaded into a rearward end of the cutting tool. In another embodiment, a second compression screw is threaded into a forward end of the cutter body. In another embodiment, each slug includes a coolant hole, circumferential grooves and axial grooves on its outer diameter, and a plurality of radial grooves on each end, and the first compression screw has a coolant hole for allowing coolant to pass therethrough.
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公开(公告)号：US20160039016A1
公开(公告)日：2016-02-11
申请号：US14452457
申请日：2014-08-05
申请人： Kennametal Inc.
IPC分类号： B23C5/28
CPC分类号： B23C5/28 , B23C5/006 , B23C2240/32 , B23C2250/12
摘要： A rotary cutting tool includes a cutter body and a coolant cap removably secured to the cutter body. The coolant cap includes an outer surface, an inner surface and a generally cylindrical outer surface extending between the outer surface and the inner surface. The cylindrical outer surface has a second cylindrical outer surface portion with external threads formed thereon such that the coolant cap is capable of being threaded onto the cutter body.
摘要翻译： 旋转切削工具包括可拆卸地固定到刀具本体的切割器主体和冷却帽。 冷却剂盖包括在外表面和内表面之间延伸的外表面，内表面和大致圆柱形的外表面。 圆柱形外表面具有第二圆柱形外表面部分，其上形成有外螺纹，使得冷却剂帽能够被螺纹连接到切割器主体上。
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公开(公告)号：US11529691B2
公开(公告)日：2022-12-20
申请号：US16700266
申请日：2019-12-02
申请人： Kennametal Inc.
摘要： A rotary cutting tool includes a cutting head having a plurality of insert-receiving pockets for radially mounting a first type of cutting insert in a first cutting region and for tangentially mounting a second type of cutting insert in a second cutting region. The first cutting region has a first length, L1, and the second cutting region has a second length, L2, that is greater in magnitude than the first length, L1. The two types of cutting inserts provides a hybrid cutting insert design in which the first type of cutting inserts provide an increased chip gash volume for effective chip evacuation, and the second type of cutting inserts provide an increased core diameter to minimize deflection of the rotary cutting tool.
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公开(公告)号：US10525539B2
公开(公告)日：2020-01-07
申请号：US15864600
申请日：2018-01-08
申请人： Kennametal Inc.
摘要： A compression milling cutter includes a shank and a front cutting portion that terminates at a leading end of the milling cutter. The front cutting portion has a first circumferential row of one or more insert receiving pockets proximate a leading end of the milling cutter, and a second circumferential row of one or more insert receiving pockets, each insert receiving pocket configured to receive a respective indexable cutting insert. The cutting insert mounted in the first circumferential row has a positive axial rake angle, A, and the indexable cutting insert mounted in an insert pocket of the second circumferential row has a negative axial rake angle, B. Because of the different axial rake angles, chips generated during a machining operation flow in opposite directions, thereby creating a compression zone disposed between the first and second circumferential rows. This compression zone replicates the cutting action of a solid end mill, particularly when machining fiber reinforced plastic materials.
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公开(公告)号：US09623497B2
公开(公告)日：2017-04-18
申请号：US14483408
申请日：2014-09-11
申请人： Kennametal Inc.
CPC分类号： B23C5/28 , B23C5/006 , B23C2250/12 , B23C2260/72 , B23Q11/1023
摘要： A rotary cutting tool includes a cutter body, a coolant cap, and a retaining ring for removably securing the coolant cap to the cutter body. The coolant cap includes an outer surface, an inner surface and a generally cylindrical outer surface extending between the outer surface and the inner surface. The retaining ring is disposed within a retaining ring notch of the cutter body such that the outer surface of the coolant cap contacts the retaining ring when high pressure coolant is introduced into the cutter body to removably secure the coolant cap to the cutter body.
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公开(公告)号：US09475131B2
公开(公告)日：2016-10-25
申请号：US13916909
申请日：2013-06-13
申请人： Kennametal Inc.
CPC分类号： B23C5/003 , B23C5/006 , B23C5/109 , B23C5/2208 , B23C2200/165 , B23C2210/168 , Y10T407/1948
摘要： A cutting tool, such as a milling cutter, includes a tool body and a plurality of pockets for receiving cutting inserts. Each pocket includes a bottom support surface, an radial support surface, an axial support surface, a first corner relief between the bottom support surface and the radial support surface, and a first stress relief formed in the first corner relief at one end of the pocket. The first stress relief is formed at an angle with respect to a plane parallel to the radial support surface. The first stress relief reduces a tensile stress of the cutting tool during a machining operation. A second and third stress relief may be formed in the first corner relief and/or in a second corner relief.
摘要翻译： 诸如铣刀的切削工具包括工具主体和用于接收切削刀片的多个凹部。 每个袋包括底部支撑表面，径向支撑表面，轴向支撑表面，底部支撑表面和径向支撑表面之间的第一角部释放，以及形成在口袋一端处的第一角部浮雕中的第一应力释放 。 第一应力释放部相对于平行于径向支撑表面的平面形成一角度。 第一应力消除在加工操作期间减小了切削工具的拉伸应力。 第二和第三应力释放可以形成在第一角部浮雕中和/或在第二角部释放中。
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