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    • 5. 发明公开
    • METHOD OF EVALUATING OPERATING ACCURACY IN NUMERICALLY CONTROLLED MACHINE.
    • VERFAHREN ZUR BERECHNUNG DER BEARBEITUNGSGENAUIGKEIT IN EINER NUMERISCH GESTETERTEN WERKTZEUGMASCHINE。
    • EP0510204A4
    • 1994-03-21
    • EP91918935
    • 1991-10-30
    • FANUC LTD
    • SASAKI TAKAOOTSUKI TOSHIAKISAITO YASUHIRO FANUC DAI- VIRA
    • G05B19/18G05B19/401G05B19/404G05B19/4061G05B19/4069
    • G05B19/401G05B2219/35286G05B2219/35353G05B2219/37619
    • A method of evaluating an accuracy in which an operating accuracy of a machine can be easily evaluated on the side of a numerically controlled system without using a special measuring device. For example, during execution of a circular arc processing program (14a) for evaluating an accuracy by the processor (11) of a numerically controlled system (10) with numerically controlled machine (30) idly operated, machine operating positions in directions of an X-axis and a Y-axis are periodically measured in response to position feedback signals output from pulse coders provided on servo motors of the X-axis and the Y-axis of a machine tool, and stored in a memory (13). Upon completion of the execution of the program, a radius of an operating path and an error with respect to a specified radius on the X-Y plane of the machine tool are calculated by the processor based on the measured positions in the directions of the X-axis and the Y-axis. The machine operating path is displayed on the display unit (16a) together with the specified path and allowable external and internal paths for the accuracy evaluation by the operator in accordance with image signals produced by a graphic control circuit (16) based on the calculated path or the calculated radius error, the radius specified by the program and allowable upper and lower limit radii.
    • 在不使用特殊的测量装置的情况下,可以在数控系统的一侧容易地评价机器的操作精度的精度的评价方法。 例如,在执行用于通过数字控制机器(30)进行空操作的数控系统(10)的处理器(11)评估精度的圆弧处理程序(14a)时,在X方向上的机器操作位置 响应于从设置在机床的X轴和Y轴的伺服电动机上的脉冲编码器输出的位置反馈信号周期性地测量轴和Y轴,并存储在存储器(13)中。 在执行程序完成时,处理器基于X轴方向上的测量位置来计算相对于机床的XY平面上的指定半径的操作路径的半径和误差 和Y轴。 机器操作路径与指定路径一起显示在操作者根据由图形控制电路(16)产生的图像信号基于所计算的路径的指定路径和允许的外部和内部路径进行精度评估 或计算的半径误差,程序指定的半径和允许的上限和下限半径。