公开(公告)号：US20040068394A1

公开(公告)日：2004-04-08

申请号：US10661572

申请日：2003-09-15

申请人： FANUC LTD.

发明人： Susumu Maekawa ,  Kuniharu Yasugi

IPC分类号： G06F015/00

CPC分类号： B23Q11/04 ,  B23Q17/0957 ,  B23Q17/0961 ,  G05B19/4065 ,  G05B2219/37229 ,  G05B2219/37245 ,  G05B2219/37285

摘要： If a tool breakage occurs, a cutting time T and a maximum value (absolute value) G of a slope of a drop in a cutting load become small. A cutting load integrated value S increases as a tool wears and becomes small when the breakage occurs. Therefore, these values T, G, and S are obtained in a machining cycle, moving variable thresholds are obtained (updated) based on values T, G, and S obtained in a preceding machining cycle, and the thresholds and the values T, G, and S obtained in the current machining cycle are compared with each other to thereby determine an abnormal condition of the tool.

摘要翻译： 如果发生刀具破损，切削负荷的下降斜率的切削时间T和最大值（绝对值）G变小。 当刀具磨损发生时，切削负荷积分值S增加，并且变小。 因此，在加工循环中获得这些值T，G，S，基于在前一加工循环中获得的值T，G和S获得（更新）移动变量阈值，并且阈值和值T，G 和在当前加工循环中获得的S相互比较，从而确定工具的异常状态。

公开(公告)号：US20030163286A1

公开(公告)日：2003-08-28

申请号：US10372114

申请日：2003-02-25

申请人： Fanuc Ltd

发明人： Kuniharu Yasugi

IPC分类号： G06F011/30

CPC分类号： G05B19/4065 ,  B23Q17/0957 ,  B23Q17/0961 ,  G05B2219/41372 ,  G05B2219/50265

摘要： A tool abnormality detecting device capable of precisely detecting an abnormality of a tool of a machine tool and timely requiring a change of the tool. Disturbance torques ys and yz exerted on a spindle motor and a Z-axis feed motor, respectively, in machining are estimated and stored in a data table. Averages ysav 1 and yzav1 of ys and yz, respectively, in a period from a point of time preceding the present time by a time period T1 to the present time are obtained as presumed present loads. Running thresholds are determined based on averages ysav23 and yzav23 of ys and yz, respectively, in a period from a point of time preceding the present time by a time period T2 to a point of time preceding the present time by a time period T3 (T1

摘要翻译： 一种刀具异常检测装置，其能够精确地检测机床的工具的异常，并且及时需要改变工具。 在加工中分别施加在主轴电动机和Z轴进给电动机上的干扰转矩ys和yz被估计并存储在数据表中。 在从当前时间之前的时间点到当前时间段的时间段内，ys和yz的ysav 1和yzav1分别为假定的当前负载。 基于ys和yz的平均值ysav23和yzav23，在从当前时间之前的时间段到时间段T2到时间段T3之前的时段（T1