公开(公告)号：US20050121984A1

公开(公告)日：2005-06-09

申请号：US11004859

申请日：2004-12-07

申请人： Hajime Nakamura ,  Takehisa Minowa

发明人： Hajime Nakamura ,  Takehisa Minowa

IPC分类号： H01F7/122 ,  H01F7/14 ,  H02K33/06 ,  H02K41/035 ,  H02K41/00 ,  H02K33/00

CPC分类号： H02K33/06 ,  H01F7/122 ,  H01F7/14 ,  H01F2007/068

摘要： A direct-acting actuator is provided comprising a stator section (16), an attachment section (6) secured to the stator section, micro-beams (8, 10) extending from the attachment section, a rotor section (12) supported for swing motion by the micro-beams, a permanent magnet (18) disposed in the stator section, and a coil (4) disposed in the rotor section. Electric current is conducted through the coil in the magnetic field created by the permanent magnet for causing the micro-beams to be displaced for inducing swing motion of the rotor section. The actuator can be assembled to a small size, typically a width of 1-10 mm, a length of 1-10 mm, and a height of 0.1-5 mm.

摘要翻译： 提供了一种直动式致动器，其包括定子部分（16），固定到定子部分的附接部分（6），从连接部分延伸的微梁（8,10），支撑成摆动的转子部分 通过微梁的运动，设置在定子部分中的永磁体（18）和设置在转子部分中的线圈（4）。 在由永久磁铁产生的磁场中，电流通过线圈传导，以使微波束发生位移以引起转子部分的摆动。 致动器可以组装成小尺寸，通常为1-10mm的宽度，长度为1-10mm，高度为0.1-5mm。

公开(公告)号：US06793742B2

公开(公告)日：2004-09-21

申请号：US10151096

申请日：2002-05-21

申请人： Kazuaki Sakaki ,  Koji Sato ,  Takahiro Hashimoto ,  Takehisa Minowa

发明人： Kazuaki Sakaki ,  Koji Sato ,  Takahiro Hashimoto ,  Takehisa Minowa

IPC分类号： H01F1055

CPC分类号： H01F1/0551 ,  B22F2009/041 ,  B22F2998/00 ,  C22C1/0441 ,  H01F1/055 ,  H01F1/0558 ,  B22F9/04

摘要： An alloy powder for bonded rare earth magnets is prepared by melting an alloy consisting essentially of 20-30 wt % of Sm or a mixture of rare earth elements (inclusive of Y) containing at least 50 wt % of Sm, 10-45 wt % of Fe, 1-10 wt % of Cu, 0.5-5 wt % of Zr, and the balance of Co, quenching the melt by a strip casting technique, to form a rare earth alloy strip containing at least 20% by volume of equiaxed crystals with a grain size of 1-200 &mgr;m and having a gage of 0.05-3 mm, and heat treating the strip in a non-oxidizing atmosphere at 1000-1300° C. for 0.5-20 hours, followed by aging treatment and grinding.

摘要翻译： 通过熔融基本上由20-30重量％的Sm组成的合金或含有至少50重量％的Sm，10〜45重量％的Sm的稀土元素（包括Y）的混合物来制备用于粘结稀土磁体的合金粉末， 的Fe，1-10重量％的Cu，0.5-5重量％的Zr，余量为Co，通过带钢铸造技术淬火熔体，以形成含有至少20体积％等轴的稀土合金条 晶粒尺寸为1-200μm，表面积为0.05-3mm，并在非氧化性气氛中在1000-1300℃下热处理该条带0.5-20小时，然后进行时效处理和研磨 。

公开(公告)号：US06262507B1

公开(公告)日：2001-07-17

申请号：US09396420

申请日：1999-09-15

申请人： Koji Sato ,  Takehisa Minowa ,  Koji Miyata

发明人： Koji Sato ,  Takehisa Minowa ,  Koji Miyata

IPC分类号： H02K2100

CPC分类号： H02K1/2733 ,  H02K21/14 ,  Y10T29/49009

摘要： Disclosed is a permanent magnet motor consisting of a rotor which is a multi polar-magnetized cylindrical permanent magnet such as a neodymium/iron/boron magnet, and a stator having a plurality of stator teeth. Different from conventional but expensive multi-radial orientation of the magnetic anisotropy, the cylindrical permanent magnet has a direction of orientation along a single diameter of the cylinder that is perpendicular to the cylinder axis when a definite relationship is held between the number of the multipolar magnetic poles and the number of the stator teeth. Even when using such a simple and inexpensive cylindrical permanent magnet as the rotor, high performance of the permanent magnet motor can be ensured with regard to a large induced voltage and small torque ripples. When such a rotor having an increased height is desired, two or more of the cylindrical unit permanent magnets each having a single diametrical orientation are coaxially stacked one on the other into a block in such a relative disposition that the directions of two adjacent cylindrical unit permanent magnets make a rotational displacement angle of 180° divided by the number of the unit magnets.

摘要翻译： 公开了一种永磁电动机，其由诸如钕/铁/硼磁体的多极化磁性圆柱形永磁体的转子和具有多个定子齿的定子组成。 与磁各向异性的常规但昂贵的多径向取向不同，圆柱形永磁体具有垂直于气缸轴线的圆筒单一直径的取向方向，当在多极磁极的数量之间保持一定关系时 极数和定子齿数。 即使使用这种简单且廉价的圆柱形永久磁铁作为转子，也可以确保针对大的感应电压和小的扭矩波动的永磁电动机的高性能。 当需要具有增加的高度的这种转子时，两个或更多个具有单个直径取向的圆柱形单元永磁体以这样的相对位置同轴地堆叠成块，即相邻的两个圆柱形单元的方向永久地 磁体使得旋转位移角为180°除以单位磁体的数量。

公开(公告)号：US06214288B1

公开(公告)日：2001-04-10

申请号：US09456494

申请日：1999-12-08

申请人： Matou Kusunoki ,  Takehisa Minowa

发明人： Matou Kusunoki ,  Takehisa Minowa

IPC分类号： B22F100

CPC分类号： H01F1/0577

摘要： An improvement is proposed in the powder metallurgical method for the preparation of a rare earth-based permanent magnet comprising the steps of compression-molding a magnet alloy powder into a powder compact and sintering the powder compact into a sintered magnet body. The improvement, which has an effect of increasing the density of the sintered body and consequently increased magnetic properties of the magnet product, comprises conducting the sintering heat treatment in two steps consisting of a first partial sintering treatment in vacuum or under a subatmospheric pressure of an inert gas immediately followed by a second partial sintering treatment under a normal to superatmospheric pressure of, for example, up to 20 atmospheres.

摘要翻译： 在用于制备稀土类永磁体的粉末冶金方法中提出了一种改进，包括将磁体合金粉末压缩成型为粉末压块并将粉末压块烧结成烧结磁体的步骤。 具有增加烧结体的密度并因此提高磁性产品的磁性能的效果包括在两个步骤中进行烧结热处理，该步骤包括在真空中或低于大气压下的第一部分烧结处理 惰性气体立即进行第二次部分烧结处理，在正常至超大气压下，例如至多20个大气压。

公开(公告)号：US5930582A

公开(公告)日：1999-07-27

申请号：US217207

申请日：1998-12-22

申请人： Masaru Ito ,  Ken Ohashi ,  Yoshio Tawara ,  Tadao Nomura ,  Takehisa Minowa

发明人： Masaru Ito ,  Ken Ohashi ,  Yoshio Tawara ,  Tadao Nomura ,  Takehisa Minowa

IPC分类号： C22C33/02 ,  C22C38/00 ,  H01F1/053 ,  H01F1/057 ,  H01F1/08 ,  H01F41/02 ,  B22F3/12 ,  B22F1/00

CPC分类号： B82Y25/00 ,  H01F1/0577 ,  H01F1/0579

摘要： Disclosed is a method for the preparation of a novel composite rare earth-based magnetically anisotropic sintered permanent magnet in which: (a) a base alloy consisting of a host phase of R.sub.2 T.sub.14 B (R: a rare earth element; T: iron or a combination of iron and cobalt) having a particle diameter of 2 to 10 .mu.m and containing in each particle a phase rich in the content of T and having a particle diameter not exceeding 1 .mu.m is prepared by the strip casting method; (b) the base alloy is crushed; (c) the base alloy powder is blended in a specified proportion with a powder of an auxiliary alloy of R-T or R-T-B in a specified proportion; (d) the powder blend is subjected to further comminution; (e) the comminuted powder blend is subjected to compression-molding in a magnetic field into a powder compact; and (f) the powder compact is sintered by a heat treatment.

摘要翻译： 公开了一种制备新型复合稀土类磁各向异性烧结永磁体的方法，其中：（a）由R2T14B的主相（R：稀土元素; T：铁或组合 的铁和钴），通过带状铸造法制备颗粒直径为2〜10μm，并且在每个颗粒中含有富含T含量的相，其粒径不超过1μm的相。 （b）将基础合金粉碎; （c）以规定比例将基础合金粉末以规定比例与R-T或R-T-B的辅助合金粉末混合; （d）粉末混合物进一步粉碎; （e）粉碎的粉末混合物在磁场中进行压缩成型成粉末压块; 和（f）粉末压坯通过热处理烧结。

公开(公告)号：US08557057B2

公开(公告)日：2013-10-15

申请号：US12913180

申请日：2010-10-27

申请人： Hiroaki Nagata ,  Tadao Nomura ,  Takehisa Minowa

发明人： Hiroaki Nagata ,  Tadao Nomura ,  Takehisa Minowa

IPC分类号： H01F1/057

CPC分类号： H01F1/0577 ,  C22C33/0278 ,  C22C38/002 ,  C22C38/005 ,  C22C38/10 ,  C22C2202/02 ,  H01F41/0293

摘要： A rare earth permanent magnet is prepared by disposing a powdered metal alloy containing at least 70 vol % of an intermetallic compound phase on a sintered body of R—Fe—B system, and heating the sintered body having the powder disposed on its surface below the sintering temperature of the sintered body in vacuum or in an inert gas for diffusion treatment. The advantages include efficient productivity, excellent magnetic performance, a minimal or zero amount of Tb or Dy used, an increased coercive force, and a minimized decline of remanence.

摘要翻译： 通过在R-Fe-B体系的烧结体上配置含有至少70体积％的金属间化合物相的粉末状金属合金，并且将其表面上设置的粉末的烧结体加热而制备稀土永磁体 在真空中或惰性气体中进行扩散处理的烧结体的烧结温度。 优点包括有效的生产率，优异的磁性能，使用的Tb或Dy的最小或零量，增加的矫顽力和最小的剩磁衰减。

公开(公告)号：US20120252330A1

公开(公告)日：2012-10-04

申请号：US13493539

申请日：2012-06-11

申请人： Masaki KASASHIMA ,  Takehisa MINOWA ,  Takaharu YAMAGUCHI ,  Koji SATO

发明人： Masaki KASASHIMA ,  Takehisa MINOWA ,  Takaharu YAMAGUCHI ,  Koji SATO

IPC分类号： B24D5/12 ,  B24D18/00 ,  B24D3/06

CPC分类号： B24D3/06 ,  B23D61/028 ,  B24D5/12 ,  B24D18/00 ,  B24D18/0018 ,  B28D5/022

摘要： In an outer blade cutting wheel comprising an annular thin disc base of cemented carbide having an outer diameter of 80-200 mm, an inner diameter of 30-80 mm, and a thickness of 0.1-1.0 mm, and a blade section disposed on an outer periphery of the base, the blade section comprises diamond grains and/or CBN grains bound with a metal bond having a Young's modulus of 0.7-4.0×1011 Pa and has a thickness which is greater than the thickness of the base by at least 0.01 mm. The outer blade cutting wheel is capable of cutting a workpiece at a high accuracy and a reduced allowance, improves machining yields, and reduces machining costs.

摘要翻译： 在外刀片切割轮中，包括外径为80-200mm，内径为30-80mm，厚度为0.1-1.0mm的硬质合金的环形薄盘基座和设置在其上的刀片部分 所述刀片部分包括金刚石晶粒和/或CBN晶粒，所述金刚石晶粒和/或CBN晶粒与杨氏模量为0.7-4.0×1011Pa的金属键结合，并且其厚度大于所述基底的厚度至少为0.01 mm。 外刀片切割轮能够以高精度切割工件，减少余量，提高加工成品率，降低加工成本。

公开(公告)号：US08211327B2

公开(公告)日：2012-07-03

申请号：US10572753

申请日：2005-03-22

申请人： Hajime Nakamura ,  Koichi Hirota ,  Takehisa Minowa

发明人： Hajime Nakamura ,  Koichi Hirota ,  Takehisa Minowa

IPC分类号： C04B35/04 ,  C04B35/64 ,  C04B35/40 ,  C04B35/26 ,  H01F1/00 ,  H01F1/26 ,  H01F1/04 ,  H01F1/14 ,  B22F3/00

CPC分类号： B22F9/023 ,  B22F2009/044 ,  B22F2998/10 ,  B22F2999/00 ,  H01F1/0577 ,  H01F41/0293 ,  H01J37/32669 ,  B22F9/04 ,  B22F3/02 ,  B22F3/10 ,  B22F2201/11 ,  B22F2201/02

摘要： A method for preparing a rare earth permanent magnet material comprising the steps of: disposing a powder comprising one or more members selected from an oxide of R2, a fluoride of R3, and an oxyfluoride of R4 wherein R2, R3 and R4 each are one or more elements selected from among rare earth elements inclusive of Y and Sc on a sintered magnet form of a R1—Fe—B composition wherein R1 is one or more elements selected from among rare earth elements inclusive of Y and Sc, and heat treating the magnet form and the powder at a temperature equal to or below the sintering temperature of the magnet in vacuum or in an inert gas. The invention offers a high performance, compact or thin permanent magnet having a high remanence and coercivity at a high productivity.

摘要翻译： 一种制备稀土永磁材料的方法，包括以下步骤：设置包含一种或多种选自R 2的氧化物，R 3的氟化物和R 4的氟氧化物的一种或多种的粉末，其中R 2，R 3和R 4各自为一个或 选自包含Y和Sc的稀土元素中的更多元素是R1-Fe-B组合物的烧结磁体形式，其中R1是选自包括Y和Sc的稀土元素中的一种或多种元素，并且对磁体进行热处理 在等于或低于磁体在真空或惰性气体中的温度的温度下形成粉末。 本发明以高生产率提供具有高剩磁和矫顽力的高性能，紧凑或薄的永久磁铁。

公开(公告)号：US08025744B2

公开(公告)日：2011-09-27

申请号：US12049603

申请日：2008-03-17

申请人： Hiroaki Nagata ,  Tadao Nomura ,  Takehisa Minowa

发明人： Hiroaki Nagata ,  Tadao Nomura ,  Takehisa Minowa

IPC分类号： H01F1/057

CPC分类号： H01F1/0577 ,  C22C33/0278 ,  C22C38/002 ,  C22C38/005 ,  C22C38/10 ,  C22C2202/02 ,  H01F41/0293

摘要： A rare earth permanent magnet is prepared by disposing a powdered metal alloy containing at least 70 vol % of an intermetallic compound phase on a sintered body of R—Fe—B system, and heating the sintered body having the powder disposed on its surface below the sintering temperature of the sintered body in vacuum or in an inert gas for diffusion treatment. The advantages include efficient productivity, excellent magnetic performance, a minimal or zero amount of Tb or Dy used, an increased coercive force, and a minimized decline of remanence.

公开(公告)号：US08012269B2

公开(公告)日：2011-09-06

申请号：US11315099

申请日：2005-12-23

申请人： Kenji Yamamoto ,  Koichi Hirota ,  Takehisa Minowa

发明人： Kenji Yamamoto ,  Koichi Hirota ,  Takehisa Minowa

IPC分类号： H01F1/057

CPC分类号： H01F1/0577 ,  C22C38/002 ,  C22C38/005 ,  C22C38/06 ,  C22C38/10 ,  C22C38/14 ,  C22C38/16 ,  H01F1/058

摘要： A rare earth permanent magnet material is based on an R—Fe—Co—B—Al—Cu system wherein R is at least one element selected from Nd, Pr, Dy, Tb, and Ho, 15 to 33% by weight of Nd being contained. At least two compounds selected from M-B, M-B—Cu and M-C compounds (wherein M is Ti, Zr or Hf) and an R oxide have precipitated within the alloy structure as grains having an average grain size of up to 5 μm which are uniformly distributed in the alloy structure at intervals of up to 50 μm.

摘要翻译： 稀土永磁材料是基于R-Fe-Co-B-Al-Cu系，其中R是选自Nd，Pr，Dy，Tb和Ho中的至少一种元素，15至33重量％的Nd 被包含 选择MB，MB-Cu和MC化合物（其中M为Ti，Zr或Hf）和R氧化物的至少两种化合物在合金结构内析出，其平均粒径高达5μm的晶粒均匀分布 在合金结构中以高达50μm的间隔。