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    • 24. 发明授权
    • Apparatus and method for clamping a work piece for machining thereof
    • 夹紧工件进行加工的装置和方法
    • US4930955A
    • 1990-06-05
    • US316099
    • 1989-02-28
    • Satoshi KawanoYoshio KimuraEiji Fukushima
    • Satoshi KawanoYoshio KimuraEiji Fukushima
    • B23B31/10B23B33/00B23Q3/18
    • B23B33/00Y10T279/19Y10T409/30868Y10T409/309016
    • A chuck for clamping a discoid portion of a work piece includes a base, at least two fixed clamps secured on a front end surface of the base, a movable clamp adjacent to the front end surface of the base and a pin secured to the front end surface of the base. The pin is adapted to fit in a hole formed in the discoid when the discoid is mounted on the chuck wherein the hole has a larger diameter than the pin. Furthermore, the pin is positioned radially inwardly of the movable clamp toward the chuck center and oriented so that the two fixed clamps are equiangularly spaced about and equidistantly spaced from the pin. As a result, the discoid may move relative to the pin and toward the two fixed clamps, without rotation thereof. Accordingly, the centroidal axis of the discoid may be aligned with the rotational axis of the chuck so that precision machining may be achieved.
    • 用于夹紧工件的盘状部分的卡盘包括基座,固定在基座的前端表面上的至少两个固定夹具,邻近基座的前端表面的可动夹具和固定到前端的销 底座表面。 当盘状物安装在卡盘上时,销适于装配在形成于盘状物中的孔中,其中孔具有比销更大的直径。 此外,销被定位成可动夹具的径向向内朝向卡盘中心并且定向成使得两个固定夹具等距地间隔开并且与销等距离地间隔开。 结果,盘状物可以相对于销移动并且朝向两个固定夹具移动,而不会旋转。 因此,盘状物的重心线可以与卡盘的旋转轴线对准,从而可以实现精密加工。