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106 条记录 (耗时 0.017 秒)

    Rake angle control for shears and the like
    1.
    发明授权
    Rake angle control for shears and the like 失效
    剪刀等的前角控制

    公开(公告)号：US4027567A

    公开(公告)日：1977-06-07

    申请号：US728929

    申请日：1976-10-04

    申请人： Clarence O. Jones, Jr.

    发明人： Clarence O. Jones, Jr.

    IPC分类号： B23D35/00 ,  B26D5/12

    CPC分类号： B23D35/005 ,  Y10T83/8837 ,  Y10T83/8854 ,  Y10T83/8858 ,  Y10T83/8867

    摘要： The invention relates to hydraulically powered shears for metal sheets and plates and particularly to an improvement in the means for adjusting and controlling the rake angle or slope of the movable shear knife in such machines. In the present disclosure a rod member is pivoted at one end and normally is disposed along a line parallel to the direction of reciprocation of the ram of the shear. The upright member has a cable connection with a servo valve which controls the fluid circuitry of the shear to adjust the relative positions of the hydraulic motor means at opposite sides of the ram to change the inclination of the ram.When the rod member is in normal position the servo valve is blocked and the rake angle is maintained but when the rod member is adjusted angularly in either direction it operates through the cable means to adjust the servo valve in one direction or the other to change the relative vertical positions of the motor means. This operation of the servo valve changes the rake angle of the ram and its associated shear knife and at the same time restores the rod member to its normal position wherein the servo valve is in a blocking position and the adjusted angle is maintained.

    摘要翻译： 本发明涉及用于金属板和板的液压动力剪，特别涉及用于调节和控制这种机器中的可移动剪切刀的前角或倾斜的装置的改进。 在本公开中，杆构件在一端枢转并且通常沿着平行于剪切器的冲头的往复运动方向的线设置。 直立构件具有与伺服阀的电缆连接，该伺服阀控制剪切的流体回路以调节液压马达装置在冲压器的相对侧处的相对位置，以改变冲头的倾斜度。

    Electrode for electrohydraulic high-energy-rate metal forming
    2.
    发明授权
    Electrode for electrohydraulic high-energy-rate metal forming 失效
    用于电液高能量金属成型的电极

    公开(公告)号：US3575631A

    公开(公告)日：1971-04-20

    申请号：US3575631D

    申请日：1969-03-15

    申请人： NIAGARA MACHINE & TOOL WORKS

    发明人： PRATT LAWRENCE W

    IPC分类号： B21D26/12 ,  G10K15/06 ,  H01J7/00

    CPC分类号： B21D26/12 ,  G10K15/06

    摘要： An electrode adapted for use in an electrohydraulic system in which kinetic forces are developed by means of a submerged electrical discharge. An elongated electrode extends axially toward a body of hydraulic fluid and axially through a chamber defined by an annular conducting member and a generally conical insulator. A plurality of arc-initiating members extend radially inwardly from the annular member. The elongated electrode includes a first arc-initiating enlargement and a second, axially-spaced enlargement which acts as a shield for the insulator, the enlargements being disposed axially at opposite sides of the arc-initiating electrodes.