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    • 77. 发明公开
    • MECHANICAL PART
    • 机械部分
    • EP0805291A1
    • 1997-11-05
    • EP96938506.1
    • 1996-11-20
    • KOYO SEIKO CO., LTD.
    • SADA, Takashi
    • F16H53/06
    • F16C33/64F01L1/16F01L1/185F01L2105/00F01L2105/02F01L2820/01F02B2275/18F16C13/006F16C33/30F16C2240/54F16C2360/18Y10T428/24355Y10T428/24479Y10T428/31678
    • A mechanical part having a rolling contact surface (11a) with many isolated minute recesses. A maximum height Ry of a roughness curve R obtained by cutting this contact surface (11a) with a plane perpendicular thereto is 1-3 µm. An attenuation peak height R PK obtained on the basis of a load curve M obtained from the roughness curve R has relation of R PK /Ry ≤ 0.1 with respect to the maximum peak height Ry. This indicates that the contact surface has minute recesses of a low distribution and a large depth, and that the portion of the contact surface layer which is close to the upper surface thereof is comparatively smooth. This smooth portion close to the upper surface enables a sufficiently wide contact surface area to be secured, and oil reservoirs of sufficiently large capacity to be formed owing to the minute recesses of a low distribution and a large depth.
    • 一个机械部分有滚动接触表面(11a)与许多孤立的微小凹陷。 通过将该接触表面(11a)切割成与其垂直的平面而获得的粗糙度曲线R的最大高度Ry为1-3μm。 根据由粗糙度曲线R得到的负荷曲线M得到的衰减峰值高度RPK相对于最大峰值高度Ry具有RPK /Ry≤0.1的关系。 这表示接触表面具有低分布和大深度的微小凹陷,并且接触表面层的靠近其上表面的部分比较光滑。 这个靠近上表面的光滑部分能够确保足够宽的接触表面积,并且由于具有低分布和深度的微小凹陷,能够形成具有足够大容量的储油器。