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    • 4. 发明专利
    • Ball spline
    • 球场
    • JP2009299796A
    • 2009-12-24
    • JP2008155264
    • 2008-06-13
    • Jtekt Corp株式会社ジェイテクト
    • YOSHIOKA YUICHI
    • F16C29/06
    • F16C29/0695
    • PROBLEM TO BE SOLVED: To provide a ball spline for smoothly circulating balls.
      SOLUTION: This ball spline includes: a spline shaft 1 formed with a plurality of straight spline grooves 4 extending in the axial direction in the outer peripheral surface thereof; a spline nut 2, through which the spline shaft 1 passes, formed with a ball circulation passage corresponding to the spline groove 4 of the spline shaft 1; and a plurality of balls 3 arranged in the ball circulation passage of the spline nut 2. The spline nut 2 includes a nut body 5 having a spline groove 7 forming a main passage 10 corresponding to the spline groove 4 of the spline shaft 1. An end of the spline groove 7 of the nut body 5 is chamfered by a first chamfered part 12, and an outer diameter side of the first chamfered part 12 is chamfered by a second chamfered part 13 so that a distance from a boundary 14 between the first chambered part 12 and the second chamfered part 13 to a connection part forming surface 15 becomes 15% or less of the diameter of the ball 3.
      COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:为了平滑地循环球提供滚珠花键。 该球形花键包括:花键轴1,其形成有在其外周面中沿轴向延伸的多个直花键槽4; 花键螺母2,其花键轴1通过,形成有与花键轴1的花键槽4对应的滚珠循环通道; 以及布置在花键螺母2的滚珠循环通道中的多个滚珠3.花键螺母2包括具有花键槽7的螺母体5,花键槽7形成与花键轴1的花键槽4对应的主通道10。 螺母体5的花键槽7的端部被第一倒角部12倒角,并且第一倒角部12的外径侧被第二倒角部13倒角,使得与第一倒角部12之间的边界14的距离 腔室部分12和第二倒角部分13连接到连接部分形成表面15成为球3的直径的15%以下。(C)2010,JPO&INPIT