公开(公告)号：US06556925B1

公开(公告)日：2003-04-29

申请号：US09650951

申请日：2000-08-29

申请人： Kazuo Mori ,  Oleg Ryabov ,  Yoshio Nagato

发明人： Kazuo Mori ,  Oleg Ryabov ,  Yoshio Nagato

IPC分类号： G06F1900

CPC分类号： B23B27/145 ,  B23Q17/0952 ,  G01N3/56 ,  G01N3/58

摘要： For determination of the expiration of the life of a cutting tool on the basis of a resistance signal from sensor lines, a true signal component indicative of the abrasion of the sensor lines should be extracted from the resistance signal. In a signal processing method according to the present invention, an output of an abrasion sensor is sampled in a predetermined sampling cycle (Step S1), and then the sampled data is passed through a median filter for elimination of a noise therefrom (Step S2). Further, the noise-free data is passed through a separation filter (Step S3). By the separation filter, reduction data having a time-serially reduced in value is separated and eliminated from the noise-free data. As a result, true data indicative of a change in the resistance of the sensor is obtained. The true data is subjected to a counter function process (Step S4) thereby to determine how many sensor lines have been cut off by the abrasion. The expiration of the life of the cutting tool is detected when the number of the cut-off sensor lines reaches a predetermined number (Step S5).

摘要翻译： 为了根据来自传感器线的电阻信号确定切削工具的使用期限，应该从电阻信号中提取表示传感器线的磨损的真实信号分量。 在根据本发明的信号处理方法中，以预定的采样周期对磨耗传感器的输出进行采样（步骤S1），然后将采样数据通过用于消除噪声的中值滤波器（步骤S2） 。 此外，无噪声数据通过分离滤波器（步骤S3）。 通过分离滤波器，将具有时间顺序降低的值的减少数据从无噪声数据中分离并消除。 结果，获得表示传感器电阻变化的真实数据。 对真实数据进行计数器功能处理（步骤S4），从而确定传感器线被磨损切断了多少。 当切断传感器线的数量达到预定数量时，检测切割工具的寿命期满（步骤S5）。