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公开(公告)号：US06440232B1
公开(公告)日：2002-08-27
申请号：US09621730
申请日：2000-07-21
IPC分类号： C22C3822
CPC分类号： F16H15/38 , Y10S148/906
摘要： In a toroidal-type continuously variable transmission, at least one of components including inner and outer races of a power roller bearing, an input disk, and an output disk is composed of an alloy steel material containing C: 0.15 to 0.5 wt %, Si: 0.1 to 1.5 wt %, Mn: 0.1 to 1.5 wt %, Cr: 0.5 to 3.0 wt %, and at least one kind selected from Mo: 0.1 to 3.0 wt % and V: 0.1 to 3.0 wt %, a content of 0 in the alloy steel material being set to be not more than 9 ppm; and the surface of the at least one component after carbonitriding, hardening and tempering treatments is set to contain C: 0.8 to 1.2 wt % and N: 0.05 to 0.20 wt %, and the at least one component has surface hardness of Hv 720 or more, and Mo.V carbide/carbonitride, the average particle size of which is in a range of from 50 nm to 500 nm is dispersed and precipitated on a race surface or in a range of from the race surface to a deep position where a maximum shearing stress is generated.
摘要翻译： 在环形无级变速器中，包括动力滚子轴承，输入盘和输出盘的内圈和外圈的至少一个部件由含有C：0.15〜0.5重量％的合金钢材料构成，Si ：0.1〜1.5重量％，Mn：0.1〜1.5重量％，Cr：0.5〜3.0重量％，Mo：0.1〜3.0重量％，V：0.1〜3.0重量％中的至少1种，0 在合金钢材料中设定为不大于9ppm; 碳氮共渗，硬化和回火处理后的至少一种成分的表面设定为C：0.8〜1.2重量％，N：0.05〜0.20重量％，所述至少一种成分的表面硬度为720v以上 ，平均粒径为50nm〜500nm的Mo·V碳化物/碳氮化物分散析出在座圈表面或者从赛道表面到最深处的深度位置 产生剪切应力。
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2.发明授权公开(公告)号：US06905437B2
公开(公告)日：2005-06-14
申请号：US10412798
申请日：2003-04-11
CPC分类号： F16H15/38 , F16C19/10 , F16C33/585 , F16C33/64 , F16C2240/54 , F16C2361/65 , Y02T10/865
摘要： A power roller bearing of a toroidal-type continuously variable transmission unit that is used for a transmission of an automobile or the like comprises a power roller, an outer race, balls, a retainer, etc. Annular raceway grooves are formed individually on the respective opposite end faces of the outer race and the power roller. Treated-surface layers for enhancing the endurance of the power roller bearing are formed individually on the respective surfaces of the raceway grooves. The treated-surface layers include super-finished surfaces with the surface roughness of 0.05 Rad or less, formed individually on the raceway grooves, and low-friction layers formed individually on the super-finished surfaces. Alternatively, the treated-surface layers include residual compression stress layers formed on the respective surface layer portions of the raceway grooves by shot-preening.
摘要翻译： 用于汽车等的变速器的环形无级变速器单元的动力滚子轴承包括动力辊，外圈，球，保持器等。环形滚道槽分别形成在各自的上方 外圈和动力辊的相对端面。 用于提高动力滚子轴承的耐久性的处理表面层分别形成在滚道槽的各个表面上。 经处理的表面层包括单独形成在滚道槽上的表面粗糙度为0.05rad或更小的超精加工表面，以及分别形成在超表面上的低摩擦层。 或者，经处理的表面层包括通过喷丸加工形成在滚道槽的各个表层部分上的残余压缩应力层。
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3.发明授权Method and apparatus for predicting the life of a rolling bearing, rolling bearing selection apparatus using the life prediction apparatus, and storage medium 有权用于预测滚动轴承的寿命的方法和装置，使用寿命预测装置的滚动轴承选择装置和存储介质公开(公告)号：US07006953B2
公开(公告)日：2006-02-28
申请号：US09940510
申请日：2001-08-29
申请人： Hiromichi Takemura , Yasuo Murakami
发明人： Hiromichi Takemura , Yasuo Murakami
摘要： A dynamic equivalent load P is calculated from data information of a rolling bearing. Next, a reliability coefficient a1 is determined, a lubrication parameter aL corresponding to a used lubricant is calculated, and a contamination degree coefficient ac is determined in consideration of a material coefficient. A fatigue limit load Pu is calculated on the basis of the data information. Thereafter, a load parameter {(P−Pu)/C}·1/ac is calculated. On the basis of the lubrication parameter aL and the load parameter {(P−Pu)/C}·1/ac, a life correction coefficient aNSK is calculated with reference to a life correction coefficient calculation map. The bearing life LA is calculated by LA=a1·aNSK·(C/P)p.
摘要翻译： 根据滚动轴承的数据信息计算动态等效载荷P. 接下来，确定可靠性系数α1，计算与使用的润滑剂对应的润滑参数a L L，并且污染度系数α是考虑到材料系数确定的。 基于数据信息计算疲劳极限载荷Pu。 此后，计算负载参数{（P-Pu）/ C} .1 / a 。 基于润滑参数aLL和负载参数{（P-Pu）/ C} .1 / a C c，寿命校正系数a < 参考寿命校正系数计算图计算NSK 。 轴承寿命L A A由下式计算：（C / P）（A / D） p 。
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公开(公告)号：US06531000B1
公开(公告)日：2003-03-11
申请号：US09529768
申请日：2000-04-19
IPC分类号： C23C810
CPC分类号： C21D9/40 , C22C38/18 , C22C38/22 , C23C8/18 , F16C19/06 , F16C33/30 , F16C33/62 , F16C33/6603 , F16C2202/04 , F16C2206/42 , F16C2240/60 , Y10T29/49705 , Y10T29/49707
摘要： The present invention provides a rolling bearing in which an oxide layer of an iron/chromium oxide series is formed at a thickness of from 1 to 1000 nm to at least one of raceway surfaces of bearing rings or rolling contact surfaces of rolling elements and a manufacturing method thereof. The oxide layer can inhibit hydrogen formed by decomposition of water incorporated in the lubricants from intruding into the matrix of the bearing members, thereby preventing early peeling for the raceway surfaces of the bearing rings or the rolling contact surfaces of the rolling elements and, thus, greatly improving the rolling life. The oxide layer can be formed simply by merely tempering the bearing member and then applying a re-heating treatment in air at a temperature lower than the tempering temperature.
摘要翻译： 本发明提供一种滚动轴承，其中将铁/铬氧化物系列的氧化物层形成为1至1000nm的厚度至滚动元件的轴承圈或滚动接触表面的滚道表面中的至少一个，以及制造 方法。 氧化物层可以抑制由润滑剂中掺入的水分解而形成的氢气侵入到轴承部件的基体中，从而防止滚动体的轴承圈或滚动面的滚道表面的早期剥离， 大大提高滚动寿命。 氧化物层可以简单地通过仅回火轴承构件，然后在低于回火温度的温度下在空气中进行再加热处理而形成。
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公开(公告)号：US06517644B2
公开(公告)日：2003-02-11
申请号：US09735523
申请日：2000-12-14
IPC分类号： C21D940
CPC分类号： C22C38/24 , C21D1/18 , C21D9/40 , C22C38/04 , C22C38/20 , C22C38/22 , C22C38/28 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/50 , F16C19/06 , F16C33/62 , Y10S148/906
摘要： An outer ring 2 as a stationary ring is fabricated with a steel material having the composition as shown under. The steel material contains, as alloying elements, C 0.80 to 1.10 wt %, Si 0.20 to 0.50 wt %, Mn 0.2 to 1.0 wt %. It also contains any two kinds or more of Cr, Mo and V at rates of Cr: 1.2 to 3.5 wt %, Mo: 0.5 to 1.5 wt % and V: 0.2 to 1.0 wt %. The containing rates of Cr, Mo and V satisfy the under mentioned formula (1). It further contains Ti and/or Cu at rates of Ti: 0.05 to 0.20 wt % and Cu: 0.2 to 2.0 wt % 1.8≦[Cr]×0.6+[Mo]×0.5+[V]≦3.0 (1). Accordingly, it is possible to remarkably lengthen the life of a rolling bearing such as a bearing for alternator to be used under high vibration and high load.
摘要翻译： 作为固定环的外圈2由具有下述组成的钢材制造。 作为合金元素，钢材含有0.80〜1.10重量％的Si，0.20〜0.50重量％的Si，Mn：0.2〜1.0重量％。 它还含有Cr，Mo和V中的任何两种或更多种，其中Cr：1.2-3.5wt％，Mo：0.5-1.5wt％，V：0.2-1.0wt％。 Cr，Mo和V的含量满足下述式（1）。 其还含有Ti：0.05〜0.20重量％的Ti和/或Cu，Cu：0.2〜2.0重量％。因此，可以显着延长滚动轴承的使用寿命，例如用于交流发电机的轴承 高振动和高负载。
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公开(公告)号：US06267511B1
公开(公告)日：2001-07-31
申请号：US09262846
申请日：1999-03-05
申请人： Hiromichi Takemura , Yasuo Murakami
发明人： Hiromichi Takemura , Yasuo Murakami
IPC分类号： F16C3332
摘要： An inner ring 3 of the rolling bearing is formed by a steel material having the following composition. This steel material contains as alloying constituents C, Si, Mn and Cr in an amount of from 0.65 to 1.20% by weight, from 0.10 to 0.70% by weight, from 0.20 to 1.20% by weight and from 0.20 to 1.80% by weight, respectively, and has an oxygen content of not more than 16 ppm. The content of retained austenite left after heat treatment is from 0 to 6% by volume and the surface hardness HRC of the bearing surface is from not less than 57 to not more than 65. Accordingly, it is possible to drastically prolong the lifetime of a rolling bearing operating under high vibration and load such as bearing for alternator.
摘要翻译： 滚动轴承的内圈3由具有以下组成的钢材形成。 该钢材含有0.65〜1.20重量％，0.10〜0.70重量％，0.20〜1.20重量％，0.20〜1.80重量％的合金成分C，Si，Mn，Cr， 并且具有不大于16ppm的氧含量。 热处理后留下的残余奥氏体含量为0〜6体积％，承载面的表面硬度HRC为57以上65以下。因此，可以大幅度延长寿命 滚动轴承在高振动和负载下工作，如交流发电机轴承。
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公开(公告)号：US5411336A
公开(公告)日：1995-05-02
申请号：US99549
申请日：1993-07-30
申请人： Hiromichi Takemura , Yasuo Murakami
发明人： Hiromichi Takemura , Yasuo Murakami
CPC分类号： F16C33/30 , F16C33/585 , F16C33/6637
摘要： A rolling bearing long in service life in which the rolling contact surfaces of the rolling elements and the mating member thereof are prevented from peeling damage. In a rolling bearing used in boundary lubrication state, the surface roughnesses of the rolling contact surfaces of each of the rolling elements and the mating member thereof are in a range of from 0.15 to 0.5 .mu.mRa when represented by central line average roughness, and the ratio thereof is 3 or smaller, whereby the surface roughnesses can be obtained in combination which are most suitable for decreasing the probabilities of the surface damage being caused in the surface layers of the rolling contact surfaces of the mating member and each rolling element. Hence, stresses are locally set up in the surface layers of the rolling contact surfaces which are smaller than the allowable shearing stress, so that the rolling contact surfaces are prevented from the peeling damage.
摘要翻译： 一种使用寿命长的滚动轴承，其中滚动元件及其配合件的滚动接触表面被防止剥离损伤。 在用于边界润滑状态的滚动轴承中，当以中心线平均粗糙度表示时，每个滚动元件及其配合构件的滚动接触表面的表面粗糙度在0.15至0.5μmRa的范围内，并且 比例为3以下，由此可以组合获得最适合于降低配合构件和各滚动体的滚动面的表面层的表面损伤的概率的表面粗糙度。 因此，在滚动接触面的表面层局部地设置应力小于允许的剪切应力，能够防止滚动面的剥离损伤。
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公开(公告)号：US07037386B2
公开(公告)日：2006-05-02
申请号：US10410342
申请日：2003-04-10
CPC分类号： F16C33/62 , C21D9/36 , C21D9/40 , C22C38/02 , C22C38/04 , C22C38/18 , F16C33/30 , F16C33/6688 , F16C2361/63 , F16C2361/65 , Y10S148/906 , Y10S384/912
摘要： A rolling bearing for belt-type continuously variable transmission with a metal belt including pieces has an inner ring; an outer ring; and rolling elements, wherein at least one of the inner ring, the outer ring and the rolling element is made of an iron alloy having a chromium content of from 2.5 to 20.0% by weight.
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公开(公告)号：US06565677B1
公开(公告)日：2003-05-20
申请号：US09575444
申请日：2000-05-22
申请人： Hiromichi Takemura , Yasuo Murakami
发明人： Hiromichi Takemura , Yasuo Murakami
IPC分类号： C22C3822
CPC分类号： F16C33/62 , Y10S148/906 , Y10S384/912
摘要： A rolling bearing includes races and rolling elements, at least the race including: 0.60 wt % to 0.95 wt % of C; 10.0 wt % to 13.0 wt % of Cr; and at least one kind of 0.5 wt % to 2.0 wt % of Mo and 0.5 wt % to 2.0 wt % of V with the balance of Fe. The surface hardness of a raceway surface of the race is not less than HRC 58, and the raceway surface of the race has a passive film with the thickness of 5 to 100 nm.
摘要翻译： 滚动轴承包括种族和滚动元件，至少该种族包括：0.60wt％至0.95wt％的C; 10.0重量％〜13.0重量％的Cr; 和0.5重量％〜2.0重量％的Mo和0.5重量％〜2.0重量％的V中的至少一种，余量为Fe。 赛道的轨道面的表面硬度不小于HRC58，并且赛道的轨道表面具有厚度为5至100nm的钝化膜。
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公开(公告)号：US06342109B1
公开(公告)日：2002-01-29
申请号：US09420836
申请日：1999-10-19
IPC分类号： C23C822
CPC分类号： F16C33/62 , F16C2240/54 , Y10S384/913
摘要： As a steel material for an inner race, an outer race and a rolling element constituting a rolling bearing, there is used one containing carbon (C) and chromium (Cr) in an amount of 0.65 wt % to 1.10 wt % and 2.0 wt % to 6.0 wt %, respectively. At least one of the inner race, the outer race and the rolling element is formed from the steel material. The inner race, outer race and the rolling element thus formed is then subjected to hardening, tempering and polishing. Further, a chromium oxide layer (Cr2O3) having a thickness of 5 nm to 300 nm is formed on a race track surface of at least one of the inner race, the outer race and the rolling element. If the rolling bearing is used in operation under the lubrication at a high traction coefficient with water mixed therein, finely particulate molybdenum carbide and/or vanadium carbide having a particle diameter of 50 nm to 300 nm is distributed in the matrix.
摘要翻译： 作为构成滚动轴承的内圈，外圈和滚动体的钢材，使用含有0.65重量％〜1.10重量％的碳（C）和铬（Cr），2.0重量％ 至6.0重量％。 内圈，外圈和滚动体中的至少一个由钢材形成。 然后将如此形成的内圈，外圈和滚动元件进行硬化，回火和抛光。 此外，在内圈，外圈和滚动体中的至少一个的座圈表面上形成有厚度为5nm〜300nm的氧化铬层（Cr 2 O 3）。 如果在与水混合的高牵引系数的润滑下使用滚动轴承，则在基体中分布有粒径为50nm〜300nm的微细的碳化钼和/或碳化钒。
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