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    Bearing device and method of manufacturing the bearing device
    1.
    发明授权
    Bearing device and method of manufacturing the bearing device 有权
    轴承装置及其制造方法

    公开(公告)号：US06814495B2

    公开(公告)日：2004-11-09

    申请号：US10362338

    申请日：2003-02-20

    申请人： Kazutoshi Toda ,  Shinichirou Kashiwagi ,  Tomohiro Ishii ,  Tadashi Mitarai ,  Daisaku Tomita

    发明人： Kazutoshi Toda ,  Shinichirou Kashiwagi ,  Tomohiro Ishii ,  Tadashi Mitarai ,  Daisaku Tomita

    IPC分类号： F16C4304

    CPC分类号： F16C43/04 ,  B60B27/00 ,  B60B27/0005 ,  B60B27/001 ,  B60B27/0084 ,  B60B27/0094 ,  F16C19/184 ,  F16C35/063 ,  F16C2326/02 ,  Y10T29/49636 ,  Y10T29/49696

    摘要： A bearing device comprising a shaft body having an axially cylindrical portion in a free end side thereof and a rolling bearing fitted around an outer peripheral surface of the shaft body, wherein the cylindrical portion is bent and deformed radially outward by a rolling caulking to be caulked thereby on an outer end face of an inner ring of the rolling bearing. An inner peripheral surface of the cylindrical portion is formed by a turning work, and a residual stress left in a surface layer of the inner peripheral surface of the cylindrical portion by the turning work is set to a value capable of restraining a crack generation ratio in the inner peripheral surface to less than a predetermined rate, desirably to not more than 5 kgf/mm2.

    摘要翻译： 一种轴承装置，包括：轴体，其轴向圆筒部分在其自由端侧;以及滚动轴承，其安装在所述轴体的外周表面上，其中所述圆筒部分通过滚动铆接径向向外弯曲以被铆接 从而在滚动轴承的内圈的外端面上。 圆筒部的内周面通过车削加工而形成，通过车削加工将圆筒部的内周面的表面层残留的残余应力设定为能够抑制裂纹产生率的值 内周面小于预定速率，优选为5kgf / mm 2以下。

    Bearing device
    6.
    发明授权
    Bearing device 失效
    轴承装置

    公开(公告)号：US06619852B2

    公开(公告)日：2003-09-16

    申请号：US09799270

    申请日：2001-03-05

    申请人： Kazutoshi Toda ,  Masaru Deguchi ,  Shinichirou Kashiwagi ,  Tadashi Mitarai ,  Tomohiro Ishii ,  Daisaku Tomita

    发明人： Kazutoshi Toda ,  Masaru Deguchi ,  Shinichirou Kashiwagi ,  Tadashi Mitarai ,  Tomohiro Ishii ,  Daisaku Tomita

    IPC分类号： F16C4300

    CPC分类号： B60B27/0084 ,  B60B27/00 ,  B60B27/0005 ,  B60B27/0026 ,  B60B27/0094 ,  B60B27/06 ,  F16C19/186 ,  F16C43/04 ,  F16C2326/02 ,  Y10T29/49684

    摘要： In a bearing device in which a free end of a shaft body to which a rolling bearing is mounted is bent outward in its radial direction into a shape to be pushed against an end face of an inner ring of the rolling bearing so as to prevent the rolling bearing from falling out, a raceway surface of the inner ring of the rolling bearing is subjected to hardening treatment, and other portion of the inner ring is made of raw material which is not hardened. With this arrangement, the caulked portion formed by the caulking plastically deforms the relatively soft inner peripheral corner of the inner ring and as a result, the caulked portion and the inner peripheral corner are adhered to each other strongly.

    摘要翻译： 在其中安装有滚动轴承的轴体的自由端的轴承装置中，在其径向向外弯曲成被推压到滚动轴承的内圈的端面的形状，以防止 滚动轴承脱落时，滚动轴承的内圈的滚道面进行硬化处理，内圈的其他部分由未硬化的原料制成。 通过这种布置，由铆接形成的铆接部将内圈的相对较软的内周角塑性地变形，结果，铆接部和内周角相互牢固地粘合。

    Method of forming bearing ring resistant to season cracking
    7.
    发明申请
    Method of forming bearing ring resistant to season cracking 审中-公开
    形成轴承环耐季节开裂的方法

    公开(公告)号：US20060130333A1

    公开(公告)日：2006-06-22

    申请号：US11355046

    申请日：2006-02-15

    申请人： Kazutoshi Toda ,  Shinichirou Kashiwagi ,  Daisaku Tomita

    发明人： Kazutoshi Toda ,  Shinichirou Kashiwagi ,  Daisaku Tomita

    IPC分类号： B21D53/10

    CPC分类号： F16C43/04 ,  B60B27/00 ,  B60B27/0005 ,  B60B27/0084 ,  B60B27/0094 ,  F16C19/186 ,  F16C2326/02 ,  Y10T29/49707

    摘要： A method sets a retained austenite amount of an edge of a bearing ring of a bearing to between 3% or more and 20% or less. The method includes exposing the bearing ring to an environment having a temperature in the range of 850° C. to 930° C., an ammonia concentration, and a carbon concentration C·P in a range of 0.9 to 1.1%, for a period of not more than 5 hours. The ammonia concentration of the environment is in a range of 4 to 7 CFH. The temperature of the environment is then reduced to a temperature in a range of 800° C. to 830° C. for a second period of at least 30 minutes. The bearing ring is next quenched in oil and then heat treated in an environment set to a temperature of 160° C. to 200° C. and then air cooled.

    摘要翻译： 一种方法将轴承的轴承环的边缘的残余奥氏体量设定在3％以上且20％以下。 该方法包括将轴承环暴露于温度在850℃至930℃，氨浓度和在0.9至1.1％范围内的碳浓度CP的环境中，持续一段时间 超过5小时。 环境中的氨浓度在4〜7CFH的范围内。 然后将环境的温度降低到800℃至830℃的温度，持续至少30分钟的第二时间段。 然后将轴承环在油中淬火，然后在设定温度为160℃至200℃的环境中进行热处理，然后空气冷却。

    Rolling bearing unit
    8.
    发明授权
    Rolling bearing unit 有权
    滚动轴承单元

    公开(公告)号：US07001078B2

    公开(公告)日：2006-02-21

    申请号：US10267501

    申请日：2002-10-09

    申请人： Kazutoshi Toda ,  Shinichirou Kashiwagi ,  Daisaku Tomita

    发明人： Kazutoshi Toda ,  Shinichirou Kashiwagi ,  Daisaku Tomita

    IPC分类号： F16C19/00

    CPC分类号： F16C43/04 ,  B60B27/00 ,  B60B27/0005 ,  B60B27/0084 ,  B60B27/0094 ,  F16C19/186 ,  F16C2326/02 ,  Y10T29/49707

    摘要： A rolling bearing unit includes a shaft body, an inner ring mounted on the shaft body, an outer ring concentric with the inner ring, and a plurality of balls between the inner ring and the outer ring. A caulking portion to be caulked onto the outer end face of the inner ring is formed on the shaft body. A pre-load is applied to the balls to fix the inner ring to the shaft body. The retained austenite amount of an edge of the inner ring in the vicinity of the caulking portion is between 3% or more and 20% or less.

    摘要翻译： 滚动轴承单元包括轴体，安装在轴体上的内圈，与内圈同心的外圈，以及在内圈和外圈之间的多个球。 在轴体上形成有铆接在内圈的外端面上的铆接部。 将预载荷施加到球以将内圈固定到轴体。 内圈附近的铆接部的残留奥氏体量在3％以上且20％以下。