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    • 3. 发明授权
    • Multi-level tool break detection using multi-mode sensing
    • 使用多模式感测的多级工具断点检测
    • US4918427A
    • 1990-04-17
    • US329044
    • 1989-03-27
    • Charles E. ThomasSteven R. HayashiDouglas G. Wildes
    • Charles E. ThomasSteven R. HayashiDouglas G. Wildes
    • B23Q17/09G08B21/20
    • G08B21/187B23Q17/0957B23Q17/0971
    • A system and method for monitoring machine tool operations provides a multi-level tool break alarm and uses information from multiple sensors of different types. Signal processing and pattern recognition logic techniques are applied to a cutting process high frequency vibration signal to detect major tool breaks requiring prompt stoppage of the cut. False alarm resistant detection of minor tool breaks, for which the response may not be an immediate stop of the cutting process, is obtained with information from a low frequency vibration sensor, an axis drive current sensor, or an axis velocity sensor. A minor tool break alarm is generated when signal transients in both a high frequency and low frequency channel signal are in close time coincidence, and a major alarm when the high frequency channel transient is followed by a persisting mean vibration level shift.
    • 用于监控机床操作的系统和方法提供了多级工具中断报警,并且使用来自不同类型的多个传感器的信息。 信号处理和模式识别逻辑技术应用于切割过程高频振动信号,以检测需要及时停止切割的主要刀具断裂。 通过来自低频振动传感器,轴驱动电流传感器或轴速度传感器的信息,可以获得针对可能不立即停止切割过程的小型刀具断裂的防误报警检测。 在高频和低频信号信号中的信号瞬变处于紧密的时间一致时,产生小的工具中断报警,当高频信道瞬态随后是持续的平均振动电平偏移时,产生主要报警。
    • 4. 发明授权
    • Programmable surface sensor for machining rough stock
    • 用于加工粗料的可编程表面传感器
    • US5187669A
    • 1993-02-16
    • US553037
    • 1990-07-16
    • Douglas G. WildesSteven R. Hayashi
    • Douglas G. WildesSteven R. Hayashi
    • G05B19/18G05B19/416
    • G05B19/18G05B19/4166
    • A Machine Tool Monitor detects significant characteristics of workpieces such as roughness, scale, metal hardness and workpiece shape and does this by monitoring vibration signals produced by the machining of parts and interpreting patterns in these signals. Information from the part program improves the performance of the detector and optimizes it for the cutting conditions called for by the machine tool control. The analog channel gain of the monitor is adjusted and parameters controlling the digital pattern recognition logic are selected using part program information on machining parameters. Efficiency is improved for example by decreasing the amount of time wasted in cutting air.
    • 机床监视器检测工件的粗糙度,尺寸,金属硬度和工件形状的重要特性,并通过监视由零件加工产生的振动信号和解释这些信号的模式。 来自零件程序的信息提高了检测器的性能,并优化了机床控制所要求的切割条件。 调整监视器的模拟通道增益,并使用加工参数的零件程序信息来选择控制数字模式识别逻辑的参数。 例如通过减少在切割空气中浪费的时间量来提高效率。
    • 5. 发明授权
    • Method of manufacturing ultrasound transducer device having acoustic backing
    • 制造具有声学背衬的超声波换能器装置的方法
    • US07441321B2
    • 2008-10-28
    • US10960871
    • 2004-10-06
    • Charles E. BaumgartnerDavid M. MillsRobert S. LewandowskiLowell Scott SmithDouglas G. Wildes
    • Charles E. BaumgartnerDavid M. MillsRobert S. LewandowskiLowell Scott SmithDouglas G. Wildes
    • H04R31/00
    • B06B1/0292B06B1/0685B06B1/0688G01H11/06Y10T29/49004Y10T29/49005Y10T29/4908
    • An ultrasonic transducer device comprising: an ultrasonic transducer array micromachined on a substrate; flexible electrical connections connected to the transducer array; and a body of acoustically attenuative material that supports the substrate and the flexible electrical connections. The acoustic backing material may contain additional features, such as tabs or notches, for use in positioning the transducer on fixtures during manufacturing or positioning the transducer within a housing during final assembly. Tabs or other features that are used only during manufacturing may be subsequently removed from the device. The MUT device itself may also be thinned so as to provide flexibility as desired. The backing material is preferably matched in acoustic impedance to the silicon wafer so as to prevent reflection at the interface of any acoustic energy propagating rearward, i.e., in the direction away from the device front surface. The backing material may also possess a high thermal conductivity to assist in removal of heat from the device.
    • 一种超声波换能器装置,包括:微机械加工在基底上的超声换能器阵列; 连接到换能器阵列的柔性电连接; 以及支撑衬底和柔性电连接的声衰减材料体。 声学衬垫材料可以包含附加特征,例如突片或凹口,用于在最终组装期间制造或将换能器定位在壳体内时将换能器定位在固定装置上。 仅在制造期间使用的标签或其它特征可随后从装置中移除。 MUT设备本身也可以被减薄,以便根据需要提供灵活性。 背衬材料优选地与硅晶片的声阻抗匹配,以便防止在向后传播的任何声能的界面处的反射,即远离器件前表面的方向上的反射。 背衬材料还可以具有高热导率以帮助从装置移除热量。