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    Laser machining method and apparatus therefor
    6.
    发明公开
    Laser machining method and apparatus therefor 审中-公开
    激光加工方法及其装置

    公开(公告)号：EP1348511A1

    公开(公告)日：2003-10-01

    申请号：EP03251665.0

    申请日：2003-03-18

    申请人： FANUC LTD

    发明人： Yamazaki, Etsuo ,  Suzuki, Kazuhiro ,  Tokito, Hiroaki

    IPC分类号： B23K26/08 ,  B23K26/10

    CPC分类号： B23K26/10 ,  B23K26/0853 ,  B23K26/0884

    摘要： An apparatus and a method for laser machining with a gap or tracing control, capable of shortening time required for moving a machining head from a machining end point (A) of one machining shape (S1) to a machining start point (D) of a next machining shape (S2). The laser machining is performed with gap or tracing control in which a gap amount between the machining nozzle and the workpiece is controlled to be constant. Driving of a Z-axis is started at a predetermined velocity when the machining nozzle reaches a machining end point (A) of one machining shape. In the drive of the Z-axis, when the Z-axis is driven by a predetermined amount (a), driving of an X-axis and a Y-axis is started so that the machining nozzle moves to the next machining start point (D) by rapid traverse. A direction of driving of the Z-axis is reversed at a middle point (C) between the machining end point (A) and the machining start point (D). Alternatively, driving of the Z-axis may be discontinued at a different retreated point. When the gap amount reaches a predetermined amount (d), the gap control is started. A length of the motion path from the machining end point (A) to the machining start point (D) is made shorter, and frequency of stopping/switching operation of the gap control axis and the machining feed axes is reduced, to shorten the time required for the transition to the machining start point (D) of the next machining shape (S2).

    摘要翻译： 本发明提供一种利用间隙或跟踪控制进行激光加工的装置和方法，其能够将加工头从一个加工形状（S1）的加工终点（A）移动到一个加工形状（S1）的加工开始点（D） 下一个加工形状（S2）。 激光加工以间隙或跟踪控制进行，其中加工喷嘴和工件之间的间隙量被控制为恒定。 当加工喷嘴到达一个加工形状的加工终点（A）时，以预定速度开始Z轴的驱动。 在Z轴的驱动中，当Z轴被驱动预定量（a）时，开始X轴和Y轴的驱动，使得加工喷嘴移动到下一个加工开始点（ D）通过快速遍历。 Z轴的驱动方向在加工结束点（A）和加工开始点（D）之间的中点（C）反转。 或者，Z轴的驱动可以在不同的退避点中断。 当间隙量达到预定量（d）时，开始间隙控制。 从加工结束点（A）到加工开始点（D）的运动路径的长度变短，间隙控制轴和加工进给轴的停止/切换操作的频率减小，从而缩短时间 过渡到下一个加工形状（S2）的加工开始点（D）所需的时间。

    Method and apparatus for sensing current position in position control system
    8.
    发明公开
    Method and apparatus for sensing current position in position control system 失效
    用于感测位置控制系统中的当前位置的方法和设备

    公开(公告)号：EP0080375A3

    公开(公告)日：1985-05-22

    申请号：EP82306250

    申请日：1982-11-24

    申请人： FANUC LTD

    发明人： Matsuura, Hitoshi ,  Yamazaki, Etsuo ,  Sakurai, Hiroshi

    IPC分类号： G05B19/23 ,  B23Q35/123

    CPC分类号： G05B19/18 ,  B23Q35/123 ,  G05B19/232 ,  G05B2219/41409 ,  G05B2219/42118 ,  G05B2219/50167

    摘要： A method and apparatus for sensing the current position of a movable element in a position control system which includes first and second control devices (101, 102) each having command pulse generating means (101 d, 307) and error storage means (101e, 102m) for computing and storing an error between a number of command pulses and a number of feedback pulses indicative of an amount of motor movement, a speed control circuit (not shown) for driving and controlling the motor on the basis of the error in the storage means (101 e, 102m) and a switching circuit (103a) for selectively connecting the first and second control devices (101, 102) to the speed control circuit, the current position of the movable element being sensed by one control device (101) when the other control device (102) is connected to the speed control circuit. The method includes steps of storing the errors which prevail in the respective storage means (101 e, 102m) just prior to switching from the first control device (101) to the second control device (102), returning the movable element to the position which prevailed just prior to the switching operation by supplying the speed control circuit with an offset voltage corresponding to an arithmetic difference found by substracting the stored error from the error storage means (102m) of said second control devide (102), from the error in the error storage means (102m) of the second control device (102) after the switching operation when the movable element has stabiiised, updating the data in a current position register (202) of the first control device (101) on the basis of an arithmetic difference found by subtracting the stored error from the error storage means (101 e) of the first control device (101), from the data in the error storage means (101 e) of the first control device (101) while the motor is controlled by the second control device (102), and revising the data in the error storage means (101 d) of the first control device (101) on the basis of the arithmetic difference.

    摘要翻译： 一种用于在包括第一和第二控制装置（101,102）的位置控制系统中感测可移动元件的当前位置的方法和设备，所述第一和第二控制装置各自具有命令脉冲生成装置（101d，307）和错误存储装置（101e，102m ），用于计算和存储多个命令脉冲与表示电机运动量的多个反馈脉冲之间的误差;速度控制电路（未示出），用于基于存储器中的误差来驱动和控制电机 用于选择性地将所述第一和第二控制装置（101,102）连接到所述速度控制电路的装置（101e，102m）和切换电路（103a），所述可移动元件的当前位置由一个控制装置（101） 当另一个控制装置（102）连接到速度控制电路时。 该方法包括以下步骤：恰好在从第一控制装置（101）切换到第二控制装置（102）之前存储在相应的存储装置（101e，102m）中存在的错误，将可移动元件返回到 通过向速度控制电路提供对应于通过减去来自所述第二控制装置（102）的误差存储装置（102m）的所存储的误差所得到的算术差的偏移电压，从转换操作之前的误差 （102）的错误存储装置（102m）在可移动元件已稳定时进行切换操作之后，基于算法更新第一控制装置（101）的当前位置寄存器（202）中的数据 通过从第一控制装置（101）的错误存储装置（101e）中的数据中减去第一控制装置（101）的错误存储装置（101e） 电动机由第二控制装置（102）控制，并且基于算术差异修正第一控制装置（101）的错误存储装置（101d）中的数据。

    Method and apparatus for sensing current position in position control system
    9.
    发明公开
    Method and apparatus for sensing current position in position control system 失效
    用于感测位置控制系统中的当前位置的方法和设备

    公开(公告)号：EP0080374A2

    公开(公告)日：1983-06-01

    申请号：EP82306249.2

    申请日：1982-11-24

    申请人： FANUC LTD.

    发明人： Matsuura, Hitoshi ,  Yamazaki, Etsuo ,  Sakurai, Hiroshi

    IPC分类号： G05B19/23 ,  B23Q35/123

    CPC分类号： G05B19/18 ,  G05B19/232 ,  G05B2219/42118 ,  G05B2219/50167

    摘要： A method and apparatus for sensing the current position of a movable element in a position control system which include first and second control devices each having command pulse generating means and error storage means for computing and storing an error between a number of command pulses and a number of feedback pulses indicative of an amount of motor movement, a speed control circuit for driving and controlling the motor on the basis of the error in the storage means, and a switching circuit for selectively connecting the first and second control devices to the speed control circuit, the current position of the movable element being sensed by the first control device when the second control device is connected to the speed control circuit. The method, which is also employed by the apparatus, includes the following steps when the second control device is connected to the speed control circuit: reading and storing, as a steady deviation, the error in the error storage means (101 e) of the first control device after the motor is rotated in accordance with the magnitude of drift of a closed loop formed by the second control device; updating the data in a current position register (202) of the first control device on the basic of an arithmetic difference found by subtracting the stored steady deviation from the data in the error storage means (101 e) of the first control device; and revising the data in the error storage means (101e) of the first control device on the basic of the arithmetic difference.

    摘要翻译： 一种用于检测位置控制系统中的可移动元件的当前位置的方法和装置，该位置控制系统包括第一和第二控制装置，每个控制装置具有命令脉冲生成装置和错误存储装置，用于计算和存储多个命令脉冲与一个数字 表示电动机移动量的反馈脉冲，根据存储装置的误差驱动控制电动机的速度控制电路，以及选择性地将第一和第二控制装置连接到速度控制电路的开关电路 当第二控制装置连接到速度控制电路时，可移动元件的当前位置由第一控制装置感测。 当第二控制装置连接到速度控制电路时，该装置也采用的方法包括以下步骤：作为稳定偏差，读取并存储误差存储装置（101e）中的误差 第一控制装置，其在电动机根据由第二控制装置形成的闭环的漂移大小而旋转之后; 基于通过从第一控制装置的错误存储装置（101e）中的数据减去存储的稳定偏差而得到的算术差来更新第一控制装置的当前位置寄存器（202）中的数据; 并根据算术差异修正第一控制装置的错误存储装置（101e）中的数据。

    A tracer control apparatus
    10.
    发明公开
    A tracer control apparatus 失效
    Kopiersteuerungsvorrichtung。

    公开(公告)号：EP0029294A1

    公开(公告)日：1981-05-27

    申请号：EP80303547.6

    申请日：1980-10-09

    申请人： FANUC LTD.

    发明人： Imazeki, Ryoji ,  Yamazaki, Etsuo ,  Sasaki, Takao ,  Yamaguchi, Masashi

    IPC分类号： B23Q35/123

    CPC分类号： B23Q35/123

    摘要： During a tracing operation of a tracer head (TR) the present position of the tracer head in the Z-axis direction is detected and a maximum value (Zma) of the detected tracer head positions is stored in a memory means (AR). When the tracer head (TR) is returned from a trace terminating end (LX2) to a trace starting end (LX1), it is quickly returned to a position (Zma + a) corresponding to the sum of the stored maximum value (Zma) and a constant value (a).