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    • 101. 发明申请
    • Chuck
    • 查克
    • US20080018060A1
    • 2008-01-24
    • US11822824
    • 2007-07-10
    • Masato IshiiYoshitomo Ishii
    • Masato IshiiYoshitomo Ishii
    • B23B31/16B23B31/30
    • B23B31/14B23B31/001B23B31/16245B23B31/16254B23B31/16258Y10T279/1241
    • An object of the present invention is to prevent the floating-up of a gripped workpiece, and to prevent the gripping from weakening due to centrifugal force accompanying fast rotation. A configuration is employed in which a chuck of the present invention includes master jaws each having a gripping claw and fitted into recessed grooves provided on a plurality of radial lines in a front surface of a rotating body that rotates together with a spindle so as to slide within a range between grasping and grasping release, pistons provided so as to slide forward and backward by fluid pressure applied behind the master jaws inside of the above-mentioned rotating body, an interlocking unit provided so as to slide the above-mentioned master jaws in a grasping direction and in a grasping release direction by the sliding of the pistons, weights incorporated behind the respective master jaws of the above-mentioned rotating body so as to slide in a central direction and in a circumferential direction of the above-mentioned rotating body and is given pressing force in the circumferential direction, and levers each provided so that a distance between an intermediate supporting point and one end engaging with each of the above-mentioned weights is larger than a distance between the intermediate supporting point and another end engaging with each of the above-mentioned master jaws.
    • 本发明的目的是防止被夹紧的工件的上浮,并且防止由于伴随快速旋转的离心力而使夹持变弱。 采用本发明的卡盘的构造,其具有主爪,每个夹爪具有夹爪,并配合在设置在与主轴一起旋转的旋转体的前表面上的多个径向线上的凹槽中,以滑动 在抓握和抓取释放之间的范围内,设置为通过在上述旋转体的主夹爪后面施加的流体压力而向前和向后滑动的活塞,设置成将上述主颚滑入 通过活塞的滑动,抓持方向和抓握方向,并入上述旋转体的各个主颚的后面的重物,以便在上述旋转体的中心方向和圆周方向上滑动 并且在圆周方向上施加按压力,并且每个杠杆设置成使得中间支撑点之间的距离 并且与上述每个重物接合的一端大于中间支撑点与与上述每个上述主颚卡合的另一端之间的距离。