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    • 1. 发明授权
    • Transducer-actuator systems and methods for performing on-machine measurements and automatic part alignment
    • 传感器执行器系统和执行机上测量和自动零件对准的方法
    • US09389058B2
    • 2016-07-12
    • US13746201
    • 2013-01-21
    • William E. BarkmanThomas A. DowKenneth P. GarrardZachary Marston
    • William E. BarkmanThomas A. DowKenneth P. GarrardZachary Marston
    • G01B5/24G01B5/00
    • G01B5/24G01B5/00
    • Systems and methods for performing on-machine measurements and automatic part alignment, including: a measurement component operable for determining the position of a part on a machine; and an actuation component operable for adjusting the position of the part by contacting the part with a predetermined force responsive to the determined position of the part. The measurement component consists of a transducer. The actuation component consists of a linear actuator. Optionally, the measurement component and the actuation component consist of a single linear actuator operable for contacting the part with a first lighter force for determining the position of the part and with a second harder force for adjusting the position of the part. The actuation component is utilized in a substantially horizontal configuration and the effects of gravitational drop of the part are accounted for in the force applied and the timing of the contact.
    • 用于执行机上测量和自动部件对准的系统和方法,包括:测量部件,其可操作以确定机器上部件的位置; 以及致动部件,其可操作用于通过使所述部件与所述部件的所确定的位置之间的预定力接触来调节所述部件的位置。 测量部件由传感器组成。 致动部件由线性致动器组成。 可选地,测量部件和致动部件由单个线性致动器组成,该单个线性致动器可操作以使部件接触第一较轻的力以确定部件的位置,并具有用于调节部件的位置的第二更硬的力。 致动部件以基本上水平的结构使用,并且部件的重力下降的影响在施加的力和接触时间上被考虑。
    • 4. 发明授权
    • Linear motor drive system for continuous-path closed-loop position
control of an object
    • 线性电机驱动系统,用于物体的连续路径闭环位置控制
    • US4221995A
    • 1980-09-09
    • US927442
    • 1978-07-24
    • William E. Barkman
    • William E. Barkman
    • G05B19/23G05B5/01
    • G05B19/232G05B2219/33261G05B2219/34215G05B2219/37275G05B2219/49271
    • A precision numerical controlled servo-positioning system is provided for continuous closed-loop position control of a machine slide or platform driven by a linear-induction motor. The system utilizes filtered velocity feedback to provide system stability required to operate with a system gain of 100 inches/minute/0.001 inch of following error. The filtered velocity feedback signal is derived from the position output signals of a laser interferometer utilized to monitor the movement of the slide. Air-bearing slides mounted to a stable support are utilized to minimize friction and small irregularities in the slideway which would tend to introduce positioning errors. A microprocessor is programmed to read command and feedback information and converts this information into the system following error signal. This error signal is summed with the negative filtered velocity feedback signal at the input of a servo amplifier whose output serves as the drive power signal to the linear motor position control coil.
    • 提供精密数控伺服定位系统,用于由线性感应电机驱动的机床或平台的连续闭环位置控制。 该系统利用过滤的速度反馈来提供系统稳定性,以便以100英寸/分钟/ 0.001英寸的跟随误差的系统增益进行操作。 滤波后的速度反馈信号是从用于监测滑块运动的激光干涉仪的位置输出信号导出的。 安装到稳定支撑件的空气滑动件被用来最小化滑道中的摩擦和小的不规则性,这将倾向于引入定位误差。 微处理器被编程为读取命令和反馈信息,并将该信息转换成系统跟随误差信号。 该误差信号与伺服放大器的输入处的负滤波速度反馈信号相加,其输出用作线性电动机位置控制线圈的驱动功率信号。
    • 10. 发明授权
    • Cutting tool form compensaton system and method
    • 切削刀具形式补偿系统及方法
    • US5255199A
    • 1993-10-19
    • US628525
    • 1990-12-14
    • William E. BarkmanEdwin F. Babelay, Jr.Edward J. Klages
    • William E. BarkmanEdwin F. Babelay, Jr.Edward J. Klages
    • B23Q17/09B23Q17/24G05B19/401G05B19/18
    • G05B19/401B23Q17/09B23Q17/24G05B2219/34321G05B2219/36504G05B2219/37133G05B2219/37272G05B2219/37559G05B2219/49204G05B2219/49215G05B2219/50136G05B2219/50137G05B2219/50252
    • A compensation system for a computer-controlled machining apparatus having a controller and including a cutting tool and a workpiece holder which are movable relative to one another along a preprogrammed path during a machining operation utilizes a camera and a vision computer for gathering information at a preselected stage of a machining operation relating to the actual shape and size of the cutting edge of the cutting tool and for altering the preprogrammed path in accordance with detected variations between the actual size and shape of the cutting edge and an assumed size and shape of the cutting edge. The camera obtains an image of the cutting tool against a background so that the cutting tool and background possess contrasting light intensities, and the vision computer utilizes the contrasting light intensities of the image to locate points therein which correspond to points along the actual cutting edge. Following a series of computations involving the determining of a tool center from the points identified along the tool edge, the results of the computations are fed to the controller where the preprogrammed path is altered as aforedescribed.
    • 具有控制器的计算机控制加工装置的补偿系统,其具有控制器并且包括可在加工操作期间沿着预编程路径相对于彼此移动的切割工具和工件保持器,利用照相机和视觉计算机在预选中收集信息 与切割工具的切割刃的实际形状和尺寸相关的加工操作的阶段,并且根据检测到的切割边缘的实际尺寸和形状之间的变化以及切割的假设尺寸和形状来改变预编程路径 边缘。 照相机根据背景获得切割工具的图像,使得切割工具和背景具有对比度的光强度,并且视觉计算机利用图像的对比光强度来定位其中对应于沿着实际切割边缘的点的点。 在一系列计算涉及从沿着刀沿确定的点确定刀具中心之后,计算结果被馈送到控制器,其中预编程路径如上所述被改变。