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    Control method for NC machine tool
    3.
    发明公开
    Control method for NC machine tool 有权
    Steuerungsverfahrenfürnumerisch gesteuerte Werkzeugmaschine

    公开(公告)号：EP1083469A2

    公开(公告)日：2001-03-14

    申请号：EP00119335.8

    申请日：2000-09-07

    申请人： Mori Seiki Co., Ltd. ,  Kakino, Yoshiaki ,  Yasda Precision Tools K.K. ,  Osaka Kiko Co., Ltd. ,  Yamazaki Mazak Corporation ,  MITSUBISHI DENKI KABUSHIKI KAISHA

    发明人： Kakino, Yoshiaki ,  Fujishima, Makoto, c/o Mori Seiki Co., Ltd. ,  Otsubo, Hisashi, c/o Yasda Precision Tools K.K. ,  Nakagawa, Hideo, c/o Osaka Kiko Co., Ltd. ,  Yamaoka, Yoshinori, c/o Yamazaki Mazak Corp. ,  Takeshita, Torao, c/o Mitsubishi Denki K.K.

    IPC分类号： G05B19/18

    CPC分类号： G05B19/4166 ,  G05B2219/42073 ,  G05B2219/50107

    摘要： A control method for an NC machine tool is provided which ensures a high precision of the contouring control, and allows for extension of the drill life, and reduction in machining time. The control method comprises: generating an operation command signal on the basis of the machining program and a time constant; generating a velocity command signal by multiplying a deviation of a present position signal fed back from the feed drive system (106) from the generated operation command signal by a position loop gain; generating an electric current command signal by multiplying a deviation of a present velocity signal fed back from the feed drive system (106) from the generated velocity command signal by a velocity loop gain; and controlling a drive motor of the feed drive system (106) on the basis of the generated electric current command signal for driving thereof, wherein a machining mode is determined from the machining program and, if the machining mode is a drilling mode, at least one of the operation command signal, the velocity command signal and the electric current command signal is modified when the feed drive system (106) is driven to be retracted opposite to a drilling feed direction.

    摘要翻译： 提供了一种用于NC机床的控制方法，其确保轮廓控制的高精度，并且允许延长钻头寿命，并减少加工时间。 控制方法包括：基于加工程序产生一个操作命令信号和一个时间常数; 通过将从所述进给驱动系统（106）反馈的当前位置信号与所生成的操作命令信号的偏差乘以位置环增益来产生速度指令信号; 通过将从所述进给驱动系统（106）反馈的当前速度信号与所生成的速度指令信号的偏差乘以速度环增益来产生电流指令信号; 并根据所产生的电流指令信号控制进给驱动系统（106）的驱动电动机，其中，从加工程序确定加工模式，如果加工模式是钻孔模式，至少 当进给驱动系统（106）被驱动以与钻取进给方向相反地缩回时，操作指令信号，速度指令信号和电流指令信号之一被修改。