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    • 8. 发明授权
    • Device for forming spiral groove on inner wall of cylindrical cavity
    • 用于在圆柱形腔的内壁上形成螺旋槽的装置
    • US5269164A
    • 1993-12-14
    • US930328
    • 1992-08-17
    • Jin-seung Choi
    • Jin-seung Choi
    • B21D17/04
    • B21D17/04
    • A device for forming a spiral groove on the inner walls of a cylindrical cavity including a rod having a cylindrical recess and pair of through holes, machining balls in the through holes, a tapered support located in the cylindrical recess, whose tapered sides support the machining balls, a spring located between the support and the other end of the cylindrical recess for supporting the support, and a push cap coupled to the aperture of the recess for deciding the location of the support by pressing the support supported by the spring. The device can freely adjust the height of the machining balls protruding from in the through holes according to the inner diameter of a bearing's cylindrical cavity, thereby easily forming spiral grooves of uniform depth.
    • 一种用于在圆柱形腔体的内壁上形成螺旋槽的装置,包括具有圆柱形凹槽和一对通孔的杆,通孔中的加工球,位于圆柱形凹槽中的锥形支撑件,其锥形侧面支撑加工 球,位于支撑件和用于支撑支撑件的圆柱形凹槽的另一端之间的弹簧,以及联接到凹部的孔的推盖,用于通过按压由弹簧支撑的支撑件来决定支撑件的位置。 该装置可以根据轴承的圆柱形腔的内径自由地调节从通孔突出的加工球的高度,从而容易地形成均匀深度的螺旋槽。