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    • 6. 发明授权
    • Device for measuring rotation accuracy and dynamic torque for radial rolling bearing
    • 径向滚动轴承旋转精度和动态转矩测量装置
    • US06378382B1
    • 2002-04-30
    • US09447588
    • 1999-11-23
    • Shoji NoguchiRyoma Endou
    • Shoji NoguchiRyoma Endou
    • G01L307
    • G01M13/04
    • A device is provided for measuring non-repetitive run-out and dynamic torque simultaneously for a radial rolling bearing, comprising a holder for holding one of the outer and inner races, a pushing member for pushing the holder in an axial direction without confining the holder in both of the radial and rotational directions, a drive shaft for rotatingly driving the other of the outer and inner races, a precision bearing device for rotatingly supporting the drive shaft, a displacement sensor for measuring radial displacement of the one of the outer and inner races, a wire having one end connected to a portion which rotates together with the one of the outer and inner races, and a torque sensor connected to the other end of the wire to measure dynamic torque applied to the one of the outer and inner races.
    • 一种用于径向滚动轴承同时测量非重复性跳动和动态扭矩的装置,包括用于保持外圈和内圈之一的保持器,用于沿轴向推动保持件的推动构件,而不限制保持架 在径向方向和旋转方向上都具有用于旋转地驱动外圈和内圈中的另一个的驱动轴,用于旋转地支撑驱动轴的精密轴承装置,用于测量外侧和内侧中的一个的径向位移的位移传感器 一种线,其一端连接到与所述外圈和所述内圈中的一个一起旋转的部分,以及连接到所述线的另一端的扭矩传感器,以测量施加到所述外圈和所述内圈之一的动态转矩 。
    • 10. 发明授权
    • Ball bearing
    • 滚珠轴承
    • US06481898B1
    • 2002-11-19
    • US09601956
    • 2000-08-10
    • Kenji YakuraHirotoshi AramakiYukio OouraAkio FujiiSumio SugitaDai KinnoShoji NoguchiKoji Ueda
    • Kenji YakuraHirotoshi AramakiYukio OouraAkio FujiiSumio SugitaDai KinnoShoji NoguchiKoji Ueda
    • F16C3358
    • F16C33/64F16C19/163F16C33/303F16C33/32F16C33/585F16C33/62F16C2240/76F16C2322/39
    • A ball bearing in which the heat value in an inner ring is decreased and the heat value in an outer ring is brought closer to the heat value in the inner ring by making the radius of curvature for the inner ring groove larger, and defining the radius of curvature for the outer ring groove as 50.5% to 53.0% of the ball diameter. The arrangement of the present invention suppresses the heat value in the entire ball bearing and extends the bearing life at a reduced cost without using a large flow rate lubrication method or a preloading method such as constant preloading. In addition, a decrease in heat generation, seizing resistance and wear resistance can be attained further by optimizing a relation between the raceway groove and the ball diameter, by optimizing the number of balls, by controlling the ingredient composition for the material of the bearing ring, and by forming a hard deposition film on the surface of the raceway groove. Thus, according to the present invention, a ball bearing having a long life is provided even during high speed rotation at a dmn value of 2,000,000 or more.
    • 通过使内圈的曲率半径越大,内圈的热量越小,外圈的热量越接近内圈的热值越靠近, 的外圈槽的曲率为球直径的50.5%至53.0%。 本发明的结构抑制了整个滚珠轴承的热值,并且在不使用大流量润滑方法或诸如恒定预加载的预加载方法的情况下,以降低的成本延长了轴承寿命。 此外,通过优化滚珠的数量,通过控制用于轴承环的材料的成分组成,能够进一步优化滚道槽与滚珠直径之间的关系,从而进一步降低发热,耐咬合性和耐磨性 并且通过在滚道槽的表面上形成硬质沉积膜。 因此,根据本发明,即使在高速旋转期间,也具有寿命长的球轴承,其数值为2,000,000以上。