公开(公告)号：US06440233B2

公开(公告)日：2002-08-27

申请号：US09817250

申请日：2001-03-27

申请人： Shigeru Okita ,  Susumu Tanaka ,  Tomonobu Yoshikawa

发明人： Shigeru Okita ,  Susumu Tanaka ,  Tomonobu Yoshikawa

IPC分类号： C12D936

CPC分类号： F16C33/62 ,  C21D9/40 ,  C23C8/32 ,  Y10S148/906

摘要： An inner ring and an outer ring are composed as follows. These members are fabricated with a steel for bearing containing carbon 0.6 wt % or higher. A carbonitrided layer is formed in a raceway surface. The amount of residual austenite at a position of 2% Da depth in the raceway surface is determined to be 1.0 vol % or lower. Hardness at the position of 2% Da depth is set to be HRC58 or more. Nitrogen content (Np) at the position of 2% Da depth is 0.05 wt % or more. A multiple Gd of an impression resistance expressed with the following formula (1) is 1.6 or more, Gd=(H0.2/500)+2·Np  (1), wherein in the formula, H0.2 is meant by Vickers hardness at the position of 2% Da depth.

摘要翻译： 内环和外圈组成如下。 这些构件用含有0.6重量％以上的碳的轴承的钢制成。 在轨道表面形成碳氮共渗层。 轨道面中2％Da深度位置处的残余奥氏体量为1.0体积％以下。 2％Da深度位置的硬度为HRC58以上。 2％Da深度位置的氮含量（Np）为0.05重量％以上。 用下式（1）表示的耐冲击强度的多重Gd为1.6以上，其中，在式中，H0.2是指在2％Da深度的位置处的维氏硬度。

公开(公告)号：US06770152B1

公开(公告)日：2004-08-03

申请号：US09830212

申请日：2001-04-24

申请人： Shigeru Okita ,  Akihiro Kiuchi ,  Hiromichi Takemura ,  Tomonobu Yoshikawa

发明人： Shigeru Okita ,  Akihiro Kiuchi ,  Hiromichi Takemura ,  Tomonobu Yoshikawa

IPC分类号： C22C3822

CPC分类号： C22C38/02 ,  C21D1/18 ,  C21D1/25 ,  C21D6/04 ,  C21D9/36 ,  C21D9/38 ,  C21D9/40 ,  C21D2211/001 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/04 ,  C22C38/22 ,  C22C38/34 ,  C23C8/32 ,  C23C8/80 ,  F16C33/62 ,  Y10S148/906

摘要： The present invention provides a rolling bearing having high wear resistance at high temperature and with reduced manufacturing cost. At least one of an inner ring, an outer ring and rolling elements is formed of the following steel material into a predetermined shape, then applied with hardening and tempering at a temperature of 240° C. or higher or 350° C. or lower to make the Vickers hardness (Hv) on the raceway surface and/or rolling surface to 720 or more. The steel material contains, as the alloy ingredient, 0.8% by weight or more and 1.2% by weight or less of C, 0.5% by weight or more and 2.5% by weight or less of Si, 0.7% by weight or more and 1.5% by weight or less of Cr, 0.8% by weight or more and 2.0% by weight or less of Mo and 0.3% by weight or more and 1.2% by weight or less of Mn, with a ratio of Mo to Cr (Mo/Cr: weight ratio) of 1.1 or more.

摘要翻译： 本发明提供一种在高温下具有高耐磨性且降低制造成本的滚动轴承。 内圈，外圈和滚动元件中的至少一个由以下钢材形成为预定形状，然后在240℃以上或350℃以下的温度下进行淬火回火 使维氏硬度（Hv）在滚道表面和/或滚动面上达到720以上。 钢材含有0.8重量％以上且1.2重量％以下的C，0.5重量％以上且2.5重量％以下的Si，0.7重量％以上且1.5以下 重量％以下的Cr，0.8重量％以上且2.0重量％以下的Mo和0.3重量％以上且1.2重量％以下的Mn，Mo与Cr的比例（Mo / Cr：重量比）为1.1以上。

公开(公告)号：US06659909B2

公开(公告)日：2003-12-09

申请号：US10194676

申请日：2002-07-11

申请人： Shigeru Okita ,  Tomonobu Yoshikawa ,  Yutaka Ishii

发明人： Shigeru Okita ,  Tomonobu Yoshikawa ,  Yutaka Ishii

IPC分类号： F16H5532

CPC分类号： C21D9/0068 ,  C21D1/18 ,  F16H15/38

摘要： A toroidal continuously variable transmission system of the present invention is provided with an input disk, an output disk and power rollers. The input and output disks have traction surfaces defined between a small-diameter portion and a large-diameter portion and having an arc-shaped concave section. The input and output disks are coaxially arranged in such a manner that the traction surfaces face each other. The power roller are frictionally engagement with the traction surfaces of the input and output disks and transmit a driving force. At least one of the input disk, the output disk and the power rollers is formed of an alloy steel which contains 0.15 to 2.0% by weight of Mo. The alloy steel is subjected first to carburization or carbonitriding processing executed at a temperature not lower than 1,000° C., and then to hardening and tempering. The alloy steel has a surface carbon content of 0.8 to 1.4%.

摘要翻译： 本发明的环形无级变速器系统设置有输入盘，输出盘和动力辊。 输入和输出盘具有限定在小直径部分和大直径部分之间并具有弧形凹部的牵引表面。 输入和输出盘以这样的方式同轴布置，使得牵引表面彼此面对。 动力辊与输入和输出盘的牵引表面摩擦接合并传递驱动力。 输入盘，输出盘和动力辊中的至少一个由含有0.15〜2.0重量％的Mo的合金钢形成。合金钢首先进行渗碳或碳氮共渗处理，其温度不低于 1000℃，然后进行硬化和回火。 合金钢的表面碳含量为0.8〜1.4％。

公开(公告)号：US06869222B1

公开(公告)日：2005-03-22

申请号：US09719948

申请日：2000-05-09

申请人： Shigeru Okita ,  Kazuo Sekino ,  Toyohisa Yamamoto ,  Susumu Tanaka ,  Hiroyuki Ito ,  Akira Uchida ,  Kazuhiro Fujiu

发明人： Shigeru Okita ,  Kazuo Sekino ,  Toyohisa Yamamoto ,  Susumu Tanaka ,  Hiroyuki Ito ,  Akira Uchida ,  Kazuhiro Fujiu

IPC分类号： F04D29/06 ,  F16C19/08 ,  F16C19/16 ,  F16C19/18 ,  F16C33/30 ,  F16C33/38 ,  F16C33/41 ,  F16C33/44 ,  F16C33/66 ,  F16C19/00 ,  F16C33/58

CPC分类号： F16C33/425 ,  F04D29/063 ,  F16C19/06 ,  F16C19/08 ,  F16C19/163 ,  F16C33/30 ,  F16C33/414 ,  F16C33/416 ,  F16C33/44 ,  F16C33/6633 ,  F16C33/6688 ,  F16C2204/70 ,  F16C2240/34 ,  F16C2360/45

摘要： A full complement angular ball bearing with no cage and having a contact angle from 10 to 45° and an increased number of balls for use under severe conditions. The life is extended by defining the surface roughness of the inner ring and the outer ring, defining the roughness ratio of them relative to the rolling element, defining the Cr content in the alloy steel for the rolling element, forming the rolling element with oxide ceramics, or providing a dense nitride layer on the surface of the rolling element, avoiding the presence of particles with a mean diameter in excess of 3 μm on the raceway surfaces of the outer ring and the inner ring, or coating a film of a hardness higher than that of the raceway surface of the outer ring and the inner ring on the surface of the rolling element.

摘要翻译： 一个满载的角接触球轴承，不带保持架，接触角为10至45°，并且在恶劣条件下使用的球数增加。 通过限定内圈和外圈的表面粗糙度来确定其相对于滚动元件的粗糙度比的滚动体的寿命延长，限定用于滚动元件的合金钢中的Cr含量，用氧化物陶瓷形成滚动元件 或在滚动体的表面上设置致密的氮化物层，避免在外圈和内圈的滚道表面上存在平均直径超过3μm的颗粒，或者涂覆硬度更高的膜 比外圈的滚道面和滚动体的表面上的内圈高。

公开(公告)号：US6071358A

公开(公告)日：2000-06-06

申请号：US933966

申请日：1997-09-19

申请人： Shigeru Okita ,  Susumu Tanaka ,  Manabu Ohori ,  Koji Ueda ,  Akihiro Kiuchi

发明人： Shigeru Okita ,  Susumu Tanaka ,  Manabu Ohori ,  Koji Ueda ,  Akihiro Kiuchi

IPC分类号： C21D9/36 ,  C21D9/40 ,  C22C38/00 ,  C22C38/04 ,  C22C38/18 ,  F16C33/30 ,  F16C33/32 ,  F16C33/62

CPC分类号： F16C33/30 ,  C22C38/04 ,  C22C38/18 ,  F16C33/32 ,  F16C33/62 ,  F16C41/008 ,  C21D9/36 ,  C21D9/40 ,  Y10S148/906

摘要： At least one of the components of a rolling member used in a manner in which it is rolled or slid with a mated member is made of carbon steel containing 0.8%-0.9% by weight of C, 0.1%-0.7% by weight of Si, 0.5%-1.1% by weight of Mn, and 0.1%-0.6% by weight of Cr and Fe substantially in the remaining part, wherein an ideal critical diameter DI value calculated from the compositions is 1.5-4.0, and the retained austenite amount after hardened heat treatment is 8%-22% by volume. The value DI is determined by the following equation:DI=(0.311.times.C %.sup.0.498).times.(0.7.times.Si %+1).times.(3.33.times.Mn %+1).times.(2.16.times.Cr %+1)

摘要翻译： 以与配合部件一起滚动或滑动的方式使用的滚动部件的至少一个部件由碳钢制成，所述碳钢含有0.8重量％〜0.9重量％的C，0.1重量％〜0.7重量％的Si ，0.5％-1.1重量％的Mn和0.1％-0.6重量％的Cr和Fe，其中由组合物计算出的理想临界直径DI值为1.5-4.0，残留奥氏体量 硬化热处理后为8％-22％。 值DI由以下等式确定：DI =（0.311×C％0.498）×（0.7×Si％+ 1）×（3.33×Mn％+ 1）×（2.16×Cr％+ 1）

公开(公告)号：US20060230856A1

公开(公告)日：2006-10-19

申请号：US11433423

申请日：2006-05-15

申请人： Shigeru Okita ,  Hideyuki Uyama ,  Susumu Tanaka ,  Kenichi Iso

发明人： Shigeru Okita ,  Hideyuki Uyama ,  Susumu Tanaka ,  Kenichi Iso

IPC分类号： F16H1/24

CPC分类号： F16C33/3706 ,  F16C29/06 ,  F16C33/32 ,  F16H25/2238 ,  F16H2025/2242 ,  F16H2025/249 ,  Y10T74/19777

摘要： A ball screw (1) as a linear motion device according to the invention has retaining pieces (21) each having two concave surfaces (23) facing adjacent ones of rolling elements (9) respectively. Each of the retaining pieces (21) is disposed between adjacent ones of the rolling elements (9). A carbonitrided layer containing residual austenite of 15-40% by volume is provided in the surface layer of each of the rolling elements (9).

摘要翻译： 作为根据本发明的直线运动装置的滚珠丝杠（1）具有分别具有面向相邻滚动体（9）的两个凹面（23）的保持片（21）。 每个保持片（21）设置在相邻的滚动元件（9）之间。 在各滚动体（9）的表面层设置含有15〜40体积％的残留奥氏体的碳氮共渗层。

公开(公告)号：US06171411B2

公开(公告)日：2001-01-09

申请号：US08901779

申请日：1997-07-28

申请人： Shigeru Okita ,  Susumu Tanaka

发明人： Shigeru Okita ,  Susumu Tanaka

IPC分类号： C23C822

CPC分类号： F16C33/62 ,  C22C38/18 ,  Y10S148/906 ,  Y10S384/912

摘要： Disclosed is a rolling bearing comprising an inner race, an outer race, and a plurality of rolling elements, at least one of the inner race and the outer race being formed of an alloy steel which comprises: 0.7≦C≦0.9% by weight; 0.1≦Si≦0.5% by weight; 0.5≦Mn≦1.1% by weight; and 0.1≦Cr≦0.6% by weight; and including, in its surface layer, at least one of 0.8≦C≦1.4% by weight and 0.01≦N≦0.3% by weight. The rolling bearing can be obtained at an extremely low cost and has a long life in a severe environment particularly under contaminated lubrication.

摘要翻译： 公开了一种包括内圈，外圈和多个滚动元件的滚动轴承，所述内圈和所述外座圈中的至少一个由合金钢制成，所述合金钢包括：并且包括在其表面层中 0.8 <= C <= 1.4重量％中的至少一个和0.01 <= N <= 0.3重量％。 滚动轴承可以以非常低的成本获得，并且在恶劣环境下使用寿命长，特别是在污染润滑下。

公开(公告)号：US5672014A

公开(公告)日：1997-09-30

申请号：US536773

申请日：1995-09-29

申请人： Shigeru Okita ,  Nobuaki Mitamura ,  Susumu Tanaka ,  Kenji Yamamura ,  Manabu Ohori

发明人： Shigeru Okita ,  Nobuaki Mitamura ,  Susumu Tanaka ,  Kenji Yamamura ,  Manabu Ohori

IPC分类号： C22C38/00 ,  C22C38/18 ,  C23C8/32 ,  F16C33/30 ,  F16C33/32 ,  F16C33/62 ,  F16C33/64 ,  F16C33/44

CPC分类号： C23C8/32 ,  F16C33/62 ,  F16C33/64 ,  F16C33/303 ,  F16C33/32 ,  Y10S384/912 ,  Y10S384/913 ,  Y10T428/31678

摘要： A rolling bearing has components of an inner race, an outer race and rolling elements, one of the components being formed of an alloy steel containing 0.1-1.0 wt % of C, 0.1-1.5 wt % of Si, 0.1-1.5 wt % of Mn and 0.1-3.0 wt % of Cr, the alloy steel being carbonitrided and then ground to form a surface layer having a carbon and a nitrogen concentration of 0.6-1.5 wt % and 0.05-0.9 wt %, respectively. The surface layer has an appropriate amount of retained austenite .gamma..sub.R and is sufficiently hard to insure long life even under lubrication in the presence of foreign matter. By optimizing the choice of constituent materials, processing methods and heat treatments for each of the rolling elements and the inner and outer races, rolling bearings that have high performance can be produced at low cost.

摘要翻译： 滚动轴承具有内圈，外圈和滚动元件的部件，其中一个部件由含有0.1-1.0重量％的C，0.1-1.5重量％的Si，0.1-1.5重量％的Si， Mn和0.1-3.0重量％的Cr，合金钢被碳氮共混，然后研磨以形成碳和氮浓度分别为0.6-1.5重量％和0.05-0.9重量％的表面层。 表面层具有合适量的残留奥氏体γR，并且即使在异物存在下的润滑下也足够坚固以确保长寿命。 通过优化各滚动元件和内外圈的构成材料，加工方法和热处理的选择，可以低成本地制造具有高性能的滚动轴承。

公开(公告)号：US06409846B1

公开(公告)日：2002-06-25

申请号：US09527245

申请日：2000-03-17

申请人： Hiromichi Takemura ,  Susumu Tanaka ,  Shigeru Okita

发明人： Hiromichi Takemura ,  Susumu Tanaka ,  Shigeru Okita

IPC分类号： C22C3822

CPC分类号： F16C33/62 ,  F16C2204/70 ,  Y10S148/906 ,  Y10S384/912

摘要： In a rolling bearing having a fixed race, a rotary race and a plurality of rolling elements disposed between said fixed race and said rotary race, at least said fixed race is made of a steel having 0.35 to 0.55% by weight of C, 11.0 to 17.0% by weight of Cr, 0.05 to less than 0.2% by weight of N and the rest of Fe and unavoidable components. Further, the sum of the content of C and N is from 0.45 to 0.65% by weight or less, and exhibits a surface hardness HRC of 57 or more after heat treatment and the diameter of eutectic carbide produced on said bearing races is 10 &mgr;m or less.

摘要翻译： 在具有固定座圈，旋转座圈和设置在所述固定座圈和所述旋转座圈之间的多个滚动元件的滚动轴承中，至少所述固定座圈由具有0.35至0.55重量％的C，11.0至 17.0重量％的Cr，0.05〜小于0.2重量％的N，其余的Fe和不可避免的成分。 此外，C和N的含量之和为0.45〜0.65重量％以下，热处理后的表面硬度HRC为57以上，所述轴承座上产生的共晶碳化物的直径为10um， 减。

公开(公告)号：US09383343B2

公开(公告)日：2016-07-05

申请号：US13581185

申请日：2011-10-28

申请人： Munetaka Mitsumura ,  Shigeru Okita

发明人： Munetaka Mitsumura ,  Shigeru Okita

IPC分类号： G01N29/44 ,  B62D1/16 ,  C22C21/00 ,  G01N23/04 ,  G01N29/07 ,  G01N3/20

CPC分类号： G01N29/4445 ,  B62D1/16 ,  C22C21/00 ,  G01N3/20 ,  G01N23/046 ,  G01N29/07 ,  G01N2203/0658 ,  G01N2223/419 ,  G01N2291/0289

摘要： There is provided an aluminum die cast part strength evaluating method is provided for correctly evaluating strength of an actual aluminum die cast part. Strength of the actual aluminum die cast part will be correctly evaluated by conducting ultrasonic inspection of a predetermined range of a high stress region of an aluminum die cast part, which is found out through stress analysis beforehand, for an internal defect, and evaluating that the aluminum die cast part has a predetermined strength if the maximum internal defect area within the predetermined range is equal to or less than a predetermined value. Moreover, an actual aluminum die cast part with a predetermined strength will be evaluated correctly by: evaluating strength using the aluminum die cast part strength evaluating method and setting the maximum-possible internal defect area within the predetermined range of the high stress region to 0.8 mm2 or less.

摘要翻译： 提供了一种用于正确评估实际铝压铸件的强度的铝压铸部件强度评估方法。 对于内部缺陷，通过预先通过应力分析发现的铝压铸件的高应力区域的预定范围的超声波检查来对实际的铝压铸部件的强度进行正确评价， 如果在预定范围内的最大内部缺陷面积等于或小于预定值，则铝压铸件具有预定的强度。 此外，通过以下方式，可以正确地评价具有规定强度的实际的铝压铸部件：使用铝压铸部件强度评价方法评价强度，将高应力区域的规定范围内的最大可能的内部缺陷面积设定为0.8mm 2 或更少。