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：US5439300A

公开(公告)日：1995-08-08

申请号：US202481

申请日：1994-02-28

申请人： Kiyoshi Hirakawa ,  Toichi Kondo ,  Shigeru Okita

发明人： Kiyoshi Hirakawa ,  Toichi Kondo ,  Shigeru Okita

IPC分类号： C21D1/18 ,  C21D6/04 ,  C21D9/40 ,  C23C8/22 ,  C23C8/32 ,  F16C33/62 ,  F16C19/00

CPC分类号： C23C8/22 ,  C21D9/40 ,  C23C8/32 ,  F16C33/62 ,  C21D1/18 ,  C21D6/04 ,  Y10S384/912

摘要： An object of this invention is to provide a rolling bearing having an inner race which can be used under a high fitting stress over 130 MPa, and can be processed more quickly than the conventional one. In a rolling bearing, according to the present invention, including an inner race which is used with a fitting stress applied between bore of said inner race and shaft, the inner race is formed by an alloy steel whose carbon content is ranged from 0.3 to 0.7% by weight, the inner race is subjected to a carburizing or carbonitriding treatment, and the carbon content (C.sub.1) of the surface layer of the raceway track of the inner race is at most 1.3% by weight, and the inner race has the difference (.DELTA.C=C.sub.1 -C.sub.2) between the carbon content (C.sub.1) of the surface layer and the carbon content (C.sub.2) of the core of the inner race being at least 0.4% by weight. When the amount of residual austenite of the inner race is 4.0 vol % or less and the hardness of the raceway track is Hv 720 or more, the inner race is high in dimensional stability, and its life-time with a foreign-matter-mixed high-temperature lubricant is increased.

摘要翻译： 本发明的目的是提供一种具有内圈的滚动轴承，该内圈可在130MPa以上的高配合应力下使用，并且可以比常规加工更快速。 在根据本发明的滚动轴承中，包括内圈，其在所述内圈和轴的孔之间施加的配合应力使用，内圈由碳含量为0.3至0.7的合金钢形成 重量％，对内圈进行渗碳或碳氮共渗处理，内圈的轨道轨道的表面层的碳含量（C1）为1.3％以下，内圈的差为 表面层的碳含量（C1）和内圈芯的碳含量（C2）之间的比例（DELTA C = C1-C2）为至少0.4重量％。 当内圈的残余奥氏体的含量为4.0体积％以下，轨道的硬度为720v以上时，内圈的尺寸稳定性高，并且与异物混合使用 高温润滑剂增加。

公开(公告)号：US5427457A

公开(公告)日：1995-06-27

申请号：US134588

申请日：1993-10-12

申请人： Kyozaburo Furumura ,  Yasuo Murakami ,  Nobuaki Mitamura ,  Shinichi Shirota ,  Shigeru Okita ,  Kazuo Sekino

发明人： Kyozaburo Furumura ,  Yasuo Murakami ,  Nobuaki Mitamura ,  Shinichi Shirota ,  Shigeru Okita ,  Kazuo Sekino

IPC分类号： C21D1/78 ,  C21D6/00 ,  C21D9/36 ,  C21D9/40 ,  C23C8/32 ,  C23C8/80 ,  F16C33/30 ,  F16C33/32 ,  F16C33/34 ,  F16C33/62 ,  F16C19/00

CPC分类号： F16C33/32 ,  C21D9/36 ,  C21D9/40 ,  C23C8/32 ,  C23C8/80 ,  F16C33/30 ,  F16C33/34 ,  F16C33/62 ,  C21D1/78 ,  C21D2211/001 ,  C21D6/002 ,  Y10S384/912 ,  Y10S384/913

摘要： An object of this invention is to provide a rolling bearing in which, as for the rolling elements, it is unnecessary to employ a high level heat treatment such as carburizing or carbonitriding which requires a long period of time to achieve, and which is sufficiently long in service life even when used with a lubricant containing foreign matters. In a rolling bearing, the amount of residual austenite (.gamma..sub.R vol %) in the surface layer of at least one of the inner and outer races is in a range of 25 to 40 vol %, and the surface hardness (Hv) thereof meets the following condition:-4.7.times.(.gamma..sub.R vol %)+900.ltoreq.Hv.ltoreq.-4.7.times.(.gamma..sub.R vol %)+1000and the hardness of the rolling elements combined with the inner and outer races is higher by H.sub.R C 1 to 2 than that of the one of the inner and outer races.

摘要翻译： 本发明的目的是提供一种滚动轴承，其中对于滚动元件，不需要采用需要较长时间来实现并且足够长的高渗透度或碳氮共渗的高水平热处理 使用寿命即使与含有外来物质的润滑剂一起使用。 在滚动轴承中，至少一个内圈和外圈的表层中的残余奥氏体量（γR vol％）在25〜40vol％的范围内，其表面硬度（Hv）满足 以下条件：-4.7倍（γR vol％）+ 900

公开(公告)号：US5079330A

公开(公告)日：1992-01-07

申请号：US562729

申请日：1990-08-06

申请人： Yoshiki Makabe ,  Shigeru Okita ,  Yoshiyuki Yamamoto

发明人： Yoshiki Makabe ,  Shigeru Okita ,  Yoshiyuki Yamamoto

IPC分类号： C08G2/18

CPC分类号： C08G2/18

摘要： A polyoxymethylene multi-copolymer obtainable by copolymerizing(a) trioxane,(b) at least one cyclic ether or formal compound chosen from the group of ethylene oxide, 1,3-dioxolane, 1,3-dioxepane, 1,3,5-trioxepane and 1,3,6-trioxocane, and(c) at least one compound chosen from the group of glycidyl phenyl ether, styrene oxide and glycidyl naphthyl ether,and characterized in that the number average molecular weight of said polyoxymethylene multi-copolymer is from 10,000 to 100,000, that the melting point (Tm) and crystallization temperature (Tc) there of are in a relationship ofTm-Tc

公开(公告)号：US20150044090A1

公开(公告)日：2015-02-12

申请号：US14381917

申请日：2012-07-24

申请人： Munetaka Mitsumura ,  Shigeru Okita ,  Hiroyuki Uchida

发明人： Munetaka Mitsumura ,  Shigeru Okita ,  Hiroyuki Uchida

IPC分类号： G01N3/22 ,  E05B15/16 ,  B60R25/021 ,  B22D17/00

CPC分类号： G01N3/22 ,  B22C9/24 ,  B22C19/04 ,  B22D17/00 ,  B60R25/02115 ,  E05B15/1614 ,  G01N29/11 ,  G01N2203/0067 ,  G01N2291/0234 ,  G01N2291/02827 ,  G01N2291/044

摘要： There are provided a strength evaluation method of a die casting product capable of appropriately evaluating the strength of the die casting product, and a die casting product in which the strength is evaluated by the strength evaluation method. A breakage test is performed by a simple strength tester after casting, and then, a strength reduction ratio is estimated based on an area ratio of cold flakes in a broken surface obtained by broken surface observation. Alternatively, ultrasonic flaw detection is performed for an internal defect in a predetermined range of a high stress portion of the die casting product, calculated by stress analysis in advance, and the die casting product is evaluated to have a predetermined strength when a defect ratio obtained by dividing a total area of the internal defect in the predetermined range by a total defect detection area is less than or equal to a predetermined value.

摘要翻译： 提供了能够适当地评价压铸产品的强度的压铸产品的强度评价方法和通过强度评价方法评价强度的压铸产品。 在铸造后，通过简单的强度试验机进行断裂试验，然后基于通过破碎的表面观察获得的破裂面中的冷片的面积比来估计强度降低率。 或者，对于预先通过应力分析计算出的压铸产品的高应力部分的预定范围内的内部缺陷进行超声波探伤，并且当获得的缺陷率获得时，将压铸产品评价为具有预定强度 通过将预定范围内的内部缺陷的总面积除以总缺陷检测区域小于或等于预定值。

公开(公告)号：US06997078B2

公开(公告)日：2006-02-14

申请号：US10307946

申请日：2002-12-03

申请人： Shigeru Okita ,  Daisuke Maruyama ,  Junji Minakuchi

发明人： Shigeru Okita ,  Daisuke Maruyama ,  Junji Minakuchi

IPC分类号： F16H1/18

CPC分类号： F16C33/3706 ,  F16H25/2238 ,  F16H2025/2242 ,  Y10T74/19777

摘要： A ball screw apparatus which can suppress retaining pieces from contacting a wall of a ball rolling path or ball circulating path, and suppress the retaining pieces between the balls from falling down, so that such a ball screw apparatus can be improved in noise reduction, operability and endurance. The retaining piece is rounded at an edge portion opposite to the ball, such that a radius of curvature of the edge portion is defined to be 0.05 mm to 1 mm, and the outer diameter of the retaining piece is in a range of 0.60 times or more to 0.85 times or less of the diameter of the ball.

摘要翻译： 一种滚珠丝杠装置，其能够抑制保持片与滚珠滚动路径或球循环路径的壁接触，并且抑制滚珠之间的保持片落下，从而可以提高这种滚珠丝杠装置的降噪，可操作性 和耐力。 保持件在与球相对的边缘部分处圆化，使得边缘部分的曲率半径被限定为0.05mm至1mm，并且保持件的外径在0.60倍或 多达0.85倍以下的球直径。

公开(公告)号：US20050078783A1

公开(公告)日：2005-04-14

申请号：US10933573

申请日：2004-09-03

申请人： Shigeru Okita

发明人： Shigeru Okita

IPC分类号： G06F1/04 ,  H03K5/00 ,  H03L7/06 ,  H03L7/087 ,  H03L7/099 ,  H03L7/18 ,  H04L27/14

CPC分类号： H03L7/18 ,  H03L7/087 ,  H03L7/0992

摘要： The object of the invention is to obtain a stable, locked clock with reduced output jitter in a digital phase-locked loop circuit. Control oscillating part 12 has frequency divider 18, period measurement circuit 20, moving average value computation circuit 22, and output clock generator 24. In intermediate oscillating frequency divider 18, as a result of tracking to synchronization control signals c, d from phase comparator 10, there is a wide variation in the period of intermediate clock g. However, by means of period measurement circuit 20 and moving average value computation circuit 22, varying slowly with a small fluctuation amplitude, period i of the moving average is obtained, and a stable output clock j that tracks reference clock a slowly and reliably is obtained from output clock generator 24.

摘要翻译： 本发明的目的是在数字锁相环电路中获得具有降低的输出抖动的稳定的锁定时钟。 控制振荡部分12具有分频器18，周期测量电路20，移动平均值计算电路22和输出时钟发生器24.在中间振荡分频器18中，作为跟踪来自相位比较器10的同步控制信号c，d的结果 ，中间钟g的周期有很大变化。 然而，通过周期测量电路20和移动平均值计算电路22，以小的波动幅度缓慢变化，获得移动平均值的周期i，并且获得缓慢且可靠地跟踪参考时钟的稳定的输出时钟j 来自输出时钟发生器24。

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：US06639591B2

公开(公告)日：2003-10-28

申请号：US09815996

申请日：2001-03-21

申请人： Mitsunori Shoji ,  Kouichi Abe ,  Izumi Fukuda ,  Yasuhiko Fujii ,  Shigeru Okita ,  Hiroyuki Seki ,  Makoto Eguchi ,  Hideki Morinaga ,  Masaki Hirabayashi

发明人： Mitsunori Shoji ,  Kouichi Abe ,  Izumi Fukuda ,  Yasuhiko Fujii ,  Shigeru Okita ,  Hiroyuki Seki ,  Makoto Eguchi ,  Hideki Morinaga ,  Masaki Hirabayashi

IPC分类号： G06F1700

CPC分类号： A63F13/57 ,  A63F13/10 ,  A63F13/65 ,  A63F2300/1037 ,  A63F2300/63 ,  A63F2300/64 ,  A63F2300/66 ,  A63F2300/663 ,  A63F2300/8017 ,  G06T13/60 ,  G09B29/007 ,  G09B29/10

摘要： More reality is given to weather phenomena reflected on an image displayed on a screen of a display unit and on operability of an operatable object. A global weather deciding part 901 decides weather in each global area obtained by dividing the whole map of a virtual world into a plurality of global areas. The weather in the global area in question is decided at intervals of a first time, in accordance with a preset behavior model and considering area information of each global area in advance. A local weather deciding part 902 decides weather in each local area obtained by dividing each global area into a plurality of local areas. The weather in the local area in question is decided at intervals of a second time, which is shorter than the first time, in accordance with the weather of the global area concerned decided by the global weather deciding part 901, and considering area information of each local area.