公开(公告)号：US4384884A

公开(公告)日：1983-05-24

申请号：US222902

申请日：1981-01-05

申请人： Masaya Miyake ,  Minol Nakano ,  Mitsuo Kodama ,  Akio Hara

发明人： Masaya Miyake ,  Minol Nakano ,  Mitsuo Kodama ,  Akio Hara

IPC分类号： C01B21/082 ,  C01B32/949 ,  C22C1/05 ,  C22C1/04

CPC分类号： C01B21/0828 ,  C01B31/34 ,  C22C1/055 ,  C01P2002/50 ,  C01P2004/03 ,  C01P2004/10 ,  C01P2006/80

摘要： The present invention relates to a process for the production of a solid solution constructed of at least one hard phase having a crystal structure of simple hexagonal type and selected from mixed carbides or carbonitrides of molybdenum and tungsten, which process comprises preparing an alloy powder consisting of a solid solution of molybdenum and tungsten, adding to the alloy powder carbon in an amount necessary for forming (Mo, W).sub.2 C and/or (Mo, W).sub.2 (CN), heating the mixture at a temperature at which (Mo, W).sub.2 C and/or (Mo, W).sub.2 (CN) is stable, adding to the (Mo, W).sub.2 C and/or (Mo, W).sub.2 (CN) carbon in an amount necessary for forming (Mo, W)C and/or (Mo, W)(CN) optionally with an iron group metal and then heating the mixture at a temperature at which (Mo, W)C and/or (Mo, W)(CN) is stable.

摘要翻译： 本发明涉及一种由至少一种具有简单六边形晶体结构并选自钼和钨的混合碳化物或碳氮化物的硬相构成的固溶体的方法，该方法包括制备由 将钼和钨的固溶体加入到形成（Mo，W）2C和/或（Mo，W）2（CN）所需的量的合金粉末碳上，在（Mo， W）2C和/或（Mo，W）2（CN）是稳定的，以（Mo，W）2和/或（Mo，W）2（CN） ）和/或（Mo，W）（CN），然后在（Mo，W）C和/或（Mo，W）（CN）稳定的温度下加热混合物。

公开(公告)号：US4639352A

公开(公告)日：1987-01-27

申请号：US808228

申请日：1985-12-13

申请人： Mitsuo Kodama ,  Masaya Miyake ,  Minol Nakano ,  Tsuyoshi Asai ,  Akio Hara

发明人： Mitsuo Kodama ,  Masaya Miyake ,  Minol Nakano ,  Tsuyoshi Asai ,  Akio Hara

IPC分类号： C01B31/30 ,  C01B31/34 ,  C22C1/05 ,  C22C29/00 ,  C22C29/02

CPC分类号： C01B31/34 ,  C01B31/301 ,  C22C1/051 ,  C22C29/00 ,  C22C29/02 ,  C01P2004/80 ,  C01P2006/10 ,  C01P2006/80 ,  C01P2006/90

摘要： This invention relates to a hard alloy comprising two phases: a hard phase consisting of at least one compound having a crystal structure of simple hexagonal MC type (M: metal; C: carbon) selected from the group consisting of mixed carbides, carbonitrides and carboxynitrides of molybdenum and tungsten, and a binder phase consisting of at least one element selected from the group consisting of iron, cobalt and nickel. The hard phase is prepared by carburizing an (Mo, W) alloy obtained by reducing oxides of molybdenum and tungsten with a particle size of at most 1 micron, is composed of coarse particles with a mean particle size of at least 3 microns, and has a uniform molybdenum to tungsten ratio in the particles. The hard alloy has a gross composition within the range of the shaded portion ABCDEA in FIG. 1.

摘要翻译： 本发明涉及包含两相的硬质合金：由至少一种具有简单的六方晶系MC型（M：金属; C：碳）的晶体结构的化合物组成的硬质相，该化合物选自混合碳化物，碳氮化物和羧基氮化物 的钼和钨，以及由至少一种选自铁，钴和镍的元素组成的粘结相。 硬相是通过将通过还原氧化钼和钨的粒径至多为1微米的（Mo，W）合金进行渗碳制备的，由具有至少3微米的平均粒度的粗颗粒组成，并且具有 颗粒中钼与钨的比例均匀。 该硬质合金的总组成在图7中的阴影部分ABCDEA的范围内。 1。

公开(公告)号：US4150195A

公开(公告)日：1979-04-17

申请号：US806880

申请日：1977-06-15

申请人： Masaaki Tobioka ,  Mitsuo Kodama ,  Minol Nakano ,  Takeshi Asai ,  Takaharu Yamamoto ,  Akio Hara

发明人： Masaaki Tobioka ,  Mitsuo Kodama ,  Minol Nakano ,  Takeshi Asai ,  Takaharu Yamamoto ,  Akio Hara

IPC分类号： B22F7/04 ,  B23B27/14 ,  C23C16/30 ,  C23C16/32 ,  C23C16/34 ,  C23C16/40 ,  C23C30/00

CPC分类号： B23B27/148 ,  B22F7/04 ,  C23C16/30 ,  C23C16/32 ,  C23C16/34 ,  C23C16/40 ,  C23C16/403 ,  C23C16/405 ,  C23C30/005 ,  Y10T428/12028 ,  Y10T428/12146 ,  Y10T428/12549 ,  Y10T428/12576

摘要： This invention relates to surface-coated cemented carbide articles having a monolayer or multilayer consisting of one or more materials selected from oxides, carbides, nitrides and mixtures or compounds thereof, the most interior layer, in contact with the surface of the cemented carbide substrate, consisting of one or more materials selected from carbides and carbonitrides of Group IVa, Va and VIa elements, wherein the thickness of a decarburized layer (.eta. phase) present between the cemented carbide substrate and most interior coating layer is 0.5 micron or less in a case where the curvature of the interface is zero and the lattice constant of the binder metal of the coated cemented carbide article, as a mean value from the interface to 50 microns, is not more than that of the iron group metal solid solution by 0.005 A or more.

摘要翻译： 本发明涉及具有由选自氧化物，碳化物，氮化物及其混合物或化合物的一种或多种材料组成的单层或多层的表面涂覆的硬质合金制品，与硬质合金基体的表面接触的最内层， 由选自Ⅳa族，Ⅴa和Ⅵa族元素的碳化物和碳氮化物的一种或多种材料组成，其中在硬质合金基底和最内部涂层之间存在的脱碳层（eta相）的厚度在0.5微米以下 其中界面的曲率为零，并且作为从界面到50微米的平均值的涂覆的硬质合金制品的粘合剂金属的晶格常数不大于铁族金属固溶体的晶格常数0.005A或 更多。

公开(公告)号：US07901138B2

公开(公告)日：2011-03-08

申请号：US11525020

申请日：2006-09-22

申请人： Mitsuo Kodama ,  Taketo Nonaka

发明人： Mitsuo Kodama ,  Taketo Nonaka

IPC分类号： F16C32/06

CPC分类号： F16C33/745 ,  F16C17/107 ,  F16C2370/12

摘要： A fluid bearing device (50B, 50AB) is composed of a shaft (1, 51); a sleeve (9, 59) into which the shaft (1, 51) is inserted; and lubrication fluid (20) intervening in a gap between the shaft (1, 51) and the sleeve (9, 59), the fluid bearing device (50B, 50AB) supporting the shaft (1, 51) so as to be relatively rotatable freely with respect to the sleeve (9, 59), wherein an end portion of the sleeve (9, 59) is provided with a taper ring (4, 54) in annular shape, wherein at least either one of an inner circumferential surface (4a, 54a) of the taper ring (4, 54) and an outer circumferential surface (1a, 91b) of the shaft (1, 51) facing towards the inner circumferential surface (4a, 54a) of the taper ring (4, 54) is formed into a tapered surface (4a, 54a), which inclines in a direction as a gap between the inner circumferential surface (4a, 54a) of the taper ring (4, 54) and the outer circumferential surface (1a, 91b) of the shaft (1, 51) widens in accordance with leaving from the sleeve (9, 59) and forms a taper seal section (50TS, 50ATS) that prevents the lubrication fluid (20) from leaking out, and wherein the taper ring (4, 54) is formed by a material having coefficient of thermal expansion larger than that of the sleeve (9, 59) and the shaft (1, 51).

摘要翻译： 流体轴承装置（50B，50AB）由轴（1,51）构成。 套筒（9,59），轴（1,51）插入其中; 以及介于所述轴（1,51）和所述套筒（9,59）之间的间隙中的润滑流体（20），所述流体轴承装置（50B，50AB）支撑所述轴（1,51）以相对旋转 自由地相对于套筒（9,59），其中套筒（9,59）的端部设置有环形的锥形环（4,54），其中内圆周表面（ 锥形环（4,44）的内周面（4a，54a）和与所述锥形环（4,54）的内周面（4a，54a）相对的轴（1,51a）的外周面（1a，91b） ）形成为在锥环（4,54）的内周面（4a，54a）与外周面（1a，91b）之间的间隙的方向上倾斜的锥形面（4a，54a） 根据从套管（9,59）离开，轴（1,51）的宽度变宽，形成防止润滑流体（20）泄漏的锥形密封部分（50TS，50ATS），其中th 锥形环（4,54）由热膨胀系数大于套筒（9,59）和轴（1,51）的热膨胀系数的材料形成。

公开(公告)号：US20110033143A1

公开(公告)日：2011-02-10

申请号：US12838375

申请日：2010-07-16

申请人： Takuji Yamada ,  Mitsuo Kodama

发明人： Takuji Yamada ,  Mitsuo Kodama

IPC分类号： F16C32/06 ,  G11B25/00

CPC分类号： G11B19/2036 ,  F16C17/045 ,  F16C17/107 ,  F16C33/107 ,  F16C2370/12

摘要： A disk drive device includes a rotating body, a fluid dynamic bearing unit that rotatably supports the rotating body, and a drive unit. The fluid dynamic bearing unit has: a lubricant holding portion in which lubricant is held; a first thrust dynamic pressure groove with which a first thrust dynamic pressure generating portion for generating the dynamic pressure in the pump-in direction, which is oriented toward the inside of the lubricant holding portion, is structured; and a second thrust dynamic pressure groove with which a second thrust dynamic pressure generating portion for generating at least the dynamic pressure in the pump-out direction, is structured. The first thrust dynamic pressure generating portion and the second thrust dynamic pressure generating portion have dynamic pressure generation characteristics in which, when the rotating body is biased in the rotational axis direction from the state where the rotating body is floating in the lubricant, the sum of the changes in the dynamic pressure in the pump-out direction is larger than that of the changes in the dynamic pressure in the pump-in direction.

摘要翻译： 磁盘驱动装置包括旋转体，可旋转地支撑旋转体的流体动力轴承单元和驱动单元。 流体动力轴承单元具有：保持润滑剂的润滑剂保持部; 第一推力动压槽，其构造有用于产生朝向润滑剂保持部的内侧的朝向内的动力的第一推力动压产生部; 以及第二推力动压槽，构成用于产生至少所述排出方向的动压的第二推力动压产生部。 第一推力动压发生部和第二推力动压发生部具有动压产生特性，其中当旋转体从旋转体浮在润滑剂中的状态沿旋转轴线方向偏置时， 泵出方向的动压变化大于泵入方向动压的变化。

公开(公告)号：US20100146772A1

公开(公告)日：2010-06-17

申请号：US12656593

申请日：2010-02-04

申请人： Mitsuo Kodama ,  Yuji Omura

发明人： Mitsuo Kodama ,  Yuji Omura

IPC分类号： H02K15/02

CPC分类号： H02K5/1677 ,  H02K1/30 ,  Y10T29/49009 ,  Y10T29/49012 ,  Y10T29/49025 ,  Y10T29/49536

摘要： A motor adopting an improved mechanism is composed of a stator having a shaft and a rotor provided with a sleeve and a hub, wherein the shaft is inserted into the hub and the hub is fixed on an outer circumferential surface of the sleeve. The outer circumferential surface of the sleeve is provided with a first outer circumferential surface, a second outer circumferential surface and a receiving surface that links between the first and second outer circumferential surfaces. The hub is provided with a base section, a through hole and a first protruded section protruding downward from the base section. A tip end portion of the first protruded section is provided with a hitting surface that contacts with the receiving surface of the sleeve and a second protruded section that links to the contacting surface and protrudes downward from the contacting surface.

摘要翻译： 采用改进机构的电动机由具有轴的定子和设置有套筒和毂的转子组成，其中轴插入到轮毂中，并且轮毂固定在套筒的外周面上。 套筒的外圆周表面设置有第一外圆周表面，第二外圆周表面和连接在第一和第二外圆周表面之间的接收表面。 毂设置有基部，通孔和从基部向下突出的第一突出部。 第一突出部的前端部设置有与套筒的接收面接触的击球面和与接触面相连并从接触面向下方突出的第二突出部。

公开(公告)号：US08807836B2

公开(公告)日：2014-08-19

申请号：US13488865

申请日：2012-06-05

申请人： Mitsuo Kodama ,  Taketo Nonaka ,  Masafumi Mizuno

发明人： Mitsuo Kodama ,  Taketo Nonaka ,  Masafumi Mizuno

IPC分类号： F16C21/00 ,  F16C32/06

CPC分类号： F16C32/0659 ,  F16C17/107 ,  F16C33/107 ,  F16C33/745 ,  F16C2370/12

摘要： A rotating device includes a shaft body having a shaft, a first flange extending in the radial direction from the side face of the shaft, and a second flange extending outwardly of the radial direction from another end side, a freely rotatable bearing body including a shaft encircling member present between the second flange and the first flange in the axial direction, a radial dynamic pressure generating groove provided in either one of the shaft and the shaft encircling member, a first thrust dynamic pressure generating groove provided in either one of the first flange and the shaft encircling member, and a lubrication medium. An end of the region where the radial dynamic pressure generating groove is formed and which is distant from the second flange is located outwardly of the region where the first thrust dynamic pressure generating groove is disposed in the axial direction.

摘要翻译： 旋转装置包括轴体，其具有轴，从轴的侧面沿径向延伸的第一凸缘和从另一端侧向径向外延伸的第二凸缘，包括轴的自由旋转的轴承体 在轴向上存在于第二凸缘和第一凸缘之间的环绕构件，设置在轴和轴环绕构件中的任一个中的径向动压产生槽，设置在第一凸缘中的任一个中的第一推力动压生成槽 和轴环绕构件，以及润滑介质。 形成径向动压产生槽并且远离第二凸缘的区域的一端位于第一推力动压生成槽沿轴向设置的区域的外侧。

公开(公告)号：US08757883B2

公开(公告)日：2014-06-24

申请号：US12852425

申请日：2010-08-06

申请人： Mitsuo Kodama

发明人： Mitsuo Kodama

IPC分类号： F16C32/06

CPC分类号： G11B19/2036 ,  F16C17/026 ,  F16C17/107 ,  F16C33/107 ,  F16C2240/30 ,  F16C2240/34 ,  F16C2240/40 ,  F16C2370/12

摘要： In a disk drive device according to an embodiment, radial dynamic pressure corresponding portions are structured such that the diameters thereof expand toward the axial outside of the sleeve, and that the shaft is in surface-contact with each of the radial dynamic pressure corresponding portions when the rotational drive of the disk drive device is stopped. Further, a herringbone-shaped radial dynamic pressure groove is formed in each of the radial dynamic pressure corresponding portions. The radial dynamic pressure groove in each radial dynamic pressure corresponding portion is formed such that the axial outside length from the turned-back portion of the herringbone-shape is longer than the axial inside length therefrom.

摘要翻译： 在根据实施例的磁盘驱动装置中，径向动压对应部分被构造成使得其直径朝向套筒的轴向外侧扩展，并且轴与每个径向动态压力对应部分表面接触， 磁盘驱动装置的旋转驱动停止。 此外，在每个径向动压对应部分中形成人字形的径向动压槽。 每个径向动压对应部分中的径向动压槽形成为使得从人字形的折回部分的轴向外部长度比其轴向内部长度长。

公开(公告)号：US08665556B2

公开(公告)日：2014-03-04

申请号：US13850191

申请日：2013-03-25

申请人： Takuji Yamada ,  Yuji Omura ,  Mitsuo Kodama

发明人： Takuji Yamada ,  Yuji Omura ,  Mitsuo Kodama

IPC分类号： G11B17/02 ,  F16C32/06

CPC分类号： G11B33/02 ,  F16C17/107 ,  F16C33/107 ,  F16C33/745 ,  F16C2370/12 ,  G11B19/2036 ,  H02K5/1675

摘要： A sleeve supports a shaft. A housing member is arranged so as to surround the sleeve and make the end of the sleeve protrude. A base member holds the housing member and fixes a stator core so as to surround the housing member. A hub drives a recording disk by being rotated integrally with the shaft, with a magnet being fixed to an annular portion concentric with the shaft so as to face the stator core fixed to the base member. A thrust member is rotated integrally with the hub, and a descender portion and a ring portion.

摘要翻译： 套筒支撑轴。 壳体构件被布置成围绕套筒并使套筒的端部突出。 基座构件保持壳体构件并固定定子芯以围绕壳体构件。 轮毂通过与轴一体地旋转而驱动记录盘，其中磁体被固定到与轴同心的环形部分，以面对固定到基座构件的定子芯。 推力构件与毂一体旋转，下降部分和环部分。

公开(公告)号：US08451558B2

公开(公告)日：2013-05-28

申请号：US13079963

申请日：2011-04-05

申请人： Takanori Watanabe ,  Mitsuo Kodama ,  Hiroshi Iwai ,  Akira Nishio

发明人： Takanori Watanabe ,  Mitsuo Kodama ,  Hiroshi Iwai ,  Akira Nishio

IPC分类号： G11B17/02 ,  H02K1/14

CPC分类号： H02K3/28 ,  G11B17/0287 ,  G11B19/2009 ,  G11B25/043 ,  H02K3/18 ,  H02K5/1675 ,  H02K21/22

摘要： A disk drive device includes: a base member; a hub on which a recording disk is placed; a bearing unit arranged on the base member for rotatably supporting the hub; and a spindle drive unit for rotationally driving the hub, wherein the spindle drive unit includes a stator core having salient poles, a coil wound around each of the salient poles, and a magnet having a plurality of magnetic poles arranged in a circumferential direction opposed to the salient poles, the hub includes an outer cylindrical portion formed of a magnetic material and engaged with an inner periphery of the recording disk, and an inner cylindrical portion fixing an outer periphery of the magnet, the number of magnetic poles is an even number in a range of 10 to 16, and the number of salient poles is a multiple of 3 in a range of 12 to 24.

摘要翻译： 磁盘驱动装置包括：基座部件; 记录盘放置在其上的集线器; 轴承单元，布置在所述基座构件上，用于可旋转地支撑所述轮毂; 以及用于旋转驱动轮毂的主轴驱动单元，其中所述主轴驱动单元包括具有凸极的定子芯，缠绕在每个所述凸极上的线圈，以及具有沿与所述凸极相对的圆周方向布置的多个磁极的磁体 凸极包括由磁性材料形成并与记录盘的内周接合的外圆柱形部分和固定磁铁外周的内圆柱形部分，磁极数量为偶数 范围为10〜16，凸极数为12〜24的3的倍数。