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    • 8. 发明授权
    • Method and apparatus for rotationally orienting an armature shaft
    • 用于旋转定向电枢轴的方法和装置
    • US5867892A
    • 1999-02-09
    • US795829
    • 1997-02-06
    • John M. BeakesMark T. HeatonGregory S. GarmannJohn W. BradfuteGary E. Clemenz
    • John M. BeakesMark T. HeatonGregory S. GarmannJohn W. BradfuteGary E. Clemenz
    • H02K7/04H02K7/075H02K15/02H02K15/16
    • H02K15/165H02K15/028H02K7/04H02K7/075Y10T29/49011Y10T29/49012Y10T29/53061Y10T29/53143Y10T29/53148
    • An armature shaft having an eccentric cam body extending from one end thereof is gripped by an adjustable collet mechanism and rotated by a drive motor, preferably a stepping motor, having an output shaft movable in discrete increments. This rotation continues until an imaginary reference point on the periphery of the cam body reaches first and second angular positions. The preferred reference point is the point on the periphery of the end face of the cam body that is farthest from the axis of rotation of the armature shaft. The number of steps necessary to rotate the armature shaft so that the reference point is moved from the first angular position to the second angular position is determined as the armature shaft is rotated and used to determine the position of the reference point relative to a centerline between the first and second angular positions. Thereafter, the armature shaft is rotated from the second angular position by a number of steps computed by a programmable controller which controls the motor so that the cam body has the desired angular orientation relative to the axis of rotation of the armature shaft. After the shaft is oriented, the collet mechanism is moved, without disturbing the angular orientation of the shaft, to align the oriented shaft with a central aperture in a stack of lamination. Thereafter, the oriented shaft is inserted into the stack of laminations.
    • 具有从其一端延伸的偏心凸轮主体的电枢轴由可调节的夹头机构夹紧,并通过驱动马达(优选地步进马达)旋转,该输出轴具有以离散增量运动的输出轴。 该旋转继续,直到凸轮本体的周边上的虚拟参考点到达第一和第二角位置。 优选的参考点是距离电枢轴的旋转轴线最远的凸轮体的端面的周边上的点。 当电枢轴旋转并且用于确定参考点相对于中心线之间的位置时,确定使电枢轴旋转使得参考点从第一角位置移动到第二角位置所需的台阶数 第一和第二角位置。 此后,电枢轴从第二角度位置转动由可编程控制器计算的多个步骤,该可编程控制器控制电动机,使得凸轮体相对于电枢轴的旋转轴线具有期望的角度取向。 在轴被定向之后,夹头机构被移动,而不会干扰轴的角度定向,以使定向轴与层压叠层中的中心孔对准。 此后,定向轴被插入叠片叠层中。