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    Apparatus for making cylindrical dies
    4.
    发明授权
    Apparatus for making cylindrical dies 失效
    制造圆柱形装置的装置

    公开(公告)号：US3796851A

    公开(公告)日：1974-03-12

    申请号：US3796851D

    申请日：1972-07-28

    申请人： BERNAL ROTARY SYST INC

    发明人： PFAFF A

    IPC分类号： B23H1/00 ,  B23Q35/12 ,  B23P1/12

    CPC分类号： B23H1/00 ,  B23Q35/12 ,  B23Q2735/067

    摘要： A cylindrical cutting die is made by mounting a line drawing of the pattern to be cut on a copy cylinder supported on the table of a milling machine for rotary movement in unison with a negative cylinder. A scanning device senses the pattern on the copy cylinder and coordinates rotary movement of the cylinders and linear movement of the machine table to cause a cutter mounted on the machine spindle to form a grooved reproduction of the pattern on the negative cylinder, which is then used in an electrical discharge machine, equipped with a fixture for rotatably supporting the negative cylinder on the machine head in axially parallel relation with a die blank cylinder in the machine tank and for rotating the cylinders at equal rotational speed, to cause a raised cutting pattern to be machined on the die cylinder corresponding to the grooved reproduction on the negative cylinder.