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    • 9. 发明授权
    • Press brake punch holder
    • 压力制动打孔支架
    • US06450004B1
    • 2002-09-17
    • US09971658
    • 2001-10-09
    • Douglas E. EdmondsonCarl Stover
    • Douglas E. EdmondsonCarl Stover
    • B21D3704
    • B21D5/0236B21D5/0209
    • A press brake punch holder provides a single actuation assembly to apply symmetrically opposed, lateral forces to a series of otherwise independent punch clamps for securing a corresponding series of punches within the clamps. The clamps are each pivotally secured to the holder assembly by a series of generally centrally disposed bolts therethrough, with the clamps rotating through a limited arc on spherical bearings between the clamps and the holder body. The laterally acting actuator urges the upper ends of the clamps apart, thereby urging their opposite lower ends together to clamp the punches therebetween, or between each clamp and a central structure. Release of lateral pressure allows the punches to be removed as desired, with light spring pressure holding the punches in place when, lateral pressure is removed. Actuation may be provided by a laterally acting wedge assembly, or by laterally acting fluid pressure (hydraulics or pneumatics).
    • 压力制动冲头支架提供单个致动组件,以对称地相对的侧向力施加到一系列否则独立的冲压夹,用于将相应的一系列冲头固定在夹具内。 夹具通过一系列大致中心布置的螺栓枢转地固定到保持器组件,夹具通过夹具和保持器主体之间的球形轴承上的有限弧旋转。 侧向作用的致动器促使夹具的上端分开,从而将它们的相对的下端推动在一起,以将冲头夹在其间,或夹紧在每个夹具与中心结构之间。 横向压力的释放允许根据需要去除冲头,当侧压力被去除时,轻弹簧压力将冲头保持在适当位置。 致动可以由侧向作用的楔形组件或侧向作用的流体压力(液压或气动)提供。
    • 10. 发明授权
    • Press brake punch holder
    • 压力制动打孔支架
    • US6000273A
    • 1999-12-14
    • US176434
    • 1998-10-21
    • Carl Stover
    • Carl Stover
    • B21D5/02B21D37/04B21D11/22
    • B21D5/0272
    • The press brake punch holder has a main housing adapted for attachment to the ram of a press brake. A pair of mating wedge strips are disposed within the housing, the lower wedge strip being slidable with respect to the upper wedge strip. A U-shaped channel is disposed between two flanges depending from the side walls of the main housing, the exterior surfaces of the flanges being beveled, the U-shaped channel being slidable vertically between the flanges. A bolt extends through each upper wedge, a slot defined in each mating lower wedge, and a slot defined in the bottom of the housing, in order to thread into holes defined in the U-shaped channel. A support member having a cross shape in cross section depends from the U-shaped channel. A plurality of clamps are bolted into the ends of the side arms of the support member, the clamps being spring biased to clamp the shank of a punch between the clamp and the lower leg of the support member. The upper edge of the clamp is beveled to mate with the beveled edges of the flanges. The lower wedge strip may be pulled along its longitudinal axis, either by mechanical, electrical or hydraulic power, the bolts pulling the U-shaped channel vertically upward, causing the upper edge of the clamps to slide up the side of the flanges, thereby opening the clamps simultaneously and releasing the punch.
    • 压力制动冲头保持器具有适于附接到压力制动器的压头的主壳体。 一对配合楔形条设置在壳体内,下楔形条可相对于上楔形条滑动。 U形通道设置在从主壳体的侧壁悬垂的两个凸缘之间,凸缘的外表面是倾斜的,U形通道可在凸缘之间垂直滑动。 螺栓延伸穿过每个上楔形物,限定在每个配合的下楔形物中的狭槽和限定在壳体的底部中的狭槽,以便螺纹连接到限定在U形通道中的孔中。 横截面为十字形的支撑构件取决于U形通道。 多个夹具被螺栓连接到支撑构件的侧臂的端部中,夹具被弹簧偏压以将夹具的柄夹紧在支撑构件的夹具和小腿之间。 夹具的上边缘倾斜以与法兰的斜边缘配合。 下楔形条可以通过机械,电动或液压动力沿其纵向轴线拉动,螺栓将U形槽垂直向上拉动,使得夹具的上边缘沿凸缘的侧面滑动,从而打开 夹具同时释放冲头。