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    • 2. 发明授权
    • Collet retainer
    • 夹头固定器
    • US06557860B1
    • 2003-05-06
    • US09932498
    • 2001-08-17
    • Clifford W. Allen, IIITheodore P. O'CannaMarshall B. Reynolds, Jr.
    • Clifford W. Allen, IIITheodore P. O'CannaMarshall B. Reynolds, Jr.
    • B23B3120
    • B23Q3/068Y10T279/1266Y10T279/13Y10T279/17521Y10T279/29Y10T409/308792
    • Each of a plurality of passages in a fixture has a piston movable therein and cooperating with a collet therein to simultaneously move each collet to its workpiece retaining position and to release each collet from its workpiece retaining position. A recess in the bottom of the fixture supports a locking nut for each passage. Each locking nut has a circular passage extending therethrough to receive an end of the collet having threads on its outer surface. The circular passage has threads of the same pitch but the threads have an interrupted portion in the circumferential and axial directions. The locking nut has a first portion movable relative to a second portion to take up the pitch clearance in the threads on the collet due to the interrupted portion of threads in the circular passage to prevent rotation of the collet prior to the piston moving the collet to its workpiece retaining position.
    • 夹具中的多个通道中的每一个具有可在其中移动的活塞并与其中的夹头配合以同时将每个夹头移动到其工件保持位置并且将每个夹头从其工件保持位置释放。 固定装置底部的凹槽支撑每个通道的锁紧螺母。 每个锁定螺母具有穿过其延伸的圆形通道,以接收在其外表面上具有螺纹的夹头​​的一端。 圆形通道具有相同螺距的螺纹,但是螺纹在周向和轴向上具有中断部分。 锁定螺母具有可相对于第二部分移动的第一部分,以便由于圆形通道中的螺纹的中断部分而卷绕在夹头上的螺纹中的间距间隙,以在活塞将夹头移动之前防止夹头旋转 其工件保持位置。