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    • 5. 发明授权
    • Method and apparatus for vector machine control
    • 矢量机控制的方法和装置
    • US4365300A
    • 1982-12-21
    • US182592
    • 1980-08-29
    • Lars JohansonPhil HaftFrank BonavitaGeorge FeldsteinSteve GreenbergKevin Brady
    • Lars JohansonPhil HaftFrank BonavitaGeorge FeldsteinSteve GreenbergKevin Brady
    • G05B19/4093G05B19/414G06F15/46B23P1/08
    • G05B19/4141G05B19/4093G05B19/40937G05B2219/33161G05B2219/33338G05B2219/35287G05B2219/35354G05B2219/37397G05B2219/45221G05B2219/50031Y02P90/265
    • A method and apparatus for vector machine control of a tool and a workpiece so as to perform desired electric discharge machine (EDM) operations on the workpiece in accordance with a polar coordinate frame of reference. The method for vector machine control calls for the processing of input data to derive vector magnitude data, vector angle data and Z-axis data. The tool is advanced in the direction of the Z-axis by a given amount to an offset position, and the tool is then successively advanced and withdrawn in the direction of a given vector angle (corresponding to the vector angle data) by a corresponding distance (corresponding to the vector magnitude data). The procedure may be repeated for successive vector angles and magnitudes, and may be further repeated at other offset positions in accordance with other vector angle and vector magnitude data. In the apparatus for vector machine control, the aforementioned operations are precisely controlled by a multi-processor system equipped with operator input capability, position and gap detection circuitry, and display circuitry. The gap detection circuitry is specially constructed to provide a normal servo control output (for continuous and gradual control of EDM), as well an immediate servo retrack signal (for immediate cutoff of EDM in the event of occurrence of a seriously improper gap condition).
    • 一种用于对工具和工件进行向量机控制的方法和装置,以便根据极坐标参考系对工件进行所需的放电加工(EDM)操作。 矢量机控制的方法要求输入数据的处理,以导出矢量幅数据,矢量角数据和Z轴数据。 该工具在Z轴方向前进一定量到偏移位置,然后将刀具沿给定矢量角度(对应于向量角度数据)的方向相继前进和撤回相应的距离 (对应于矢量幅度数据)。 可以针对连续的矢量角度和幅度重复该过程,并且可以根据其他矢量角度和矢量幅度数据在其它偏移位置处进一步重复该过程。 在用于向量机控制的装置中,上述操作由配有操作员输入能力,位置和间隙检测电路以及显示电路的多处理器系统精确地控制。 间隙检测电路是特别构造的,用于提供正常的伺服控制输出(用于EDM的连续和逐渐控制)以及立即伺服回溯信号(在出现严重不正确的间隙条件的情况下立即切断EDM)。
    • 10. 发明申请
    • LASER PROCESSING DEVICE HAVING GAP CONTROL FUNCTION AND CONTROLLER THEREOF
    • 具有GAP控制功能的激光加工装置及其控制器
    • US20160288253A1
    • 2016-10-06
    • US15085193
    • 2016-03-30
    • FANUC CORPORATION
    • Ryoutarou TsunekiSatoshi lkai
    • B23K26/04G05B19/402B23K26/08
    • B23K26/048B23K26/08G05B19/402G05B19/416G05B2219/37397G05B2219/43006G05B2219/45165
    • A controller and a laser processing device having the controller, capable of reducing time for switching feedback control to gap control, and capable of moving a processing nozzle relative to a workpiece so that an amount of change in acceleration when switching is minimized. The controller has: a deceleration start distance calculating part which calculates a deceleration start distance corresponding to a distance between the nozzle and the workpiece when deceleration of approach motion of the nozzle is started; a first velocity command generating part which generates a first velocity command value based on the deceleration start distance, a predetermined maximum approach velocity and deceleration rate; a second velocity command generating part which generates a second velocity command value based on a gap target value and a feedback value; and a velocity command switching part which selects one of the first and second velocity command values.
    • 一种具有控制器的控制器和激光加工装置,其能够减少用于将反馈控制切换到间隙控制的时间,并且能够相对于工件移动加工喷嘴,使得切换时的加速度变化量最小化。 控制器具有:减速开始距离计算部,其在开始喷嘴的接近运动的减速时,计算与喷嘴和工件之间的距离对应的减速开始距离; 第一速度指令生成部,其基于所述减速开始距离,预定的最大接近速度和减速度生成第一速度指令值; 第二速度指令生成部,其基于间隙目标值和反馈值生成第二速度指令值; 以及选择第一速度指令值和第二速度指令值之一的速度指令切换部。