Auatomatic inspection system for IC lead frames and visual inspection
method thereof
    3.
    发明授权
    Auatomatic inspection system for IC lead frames and visual inspection method thereof 失效
    IC引线框架自适应检测系统及其目视检查方法

    公开(公告)号:US4851902A

    公开(公告)日:1989-07-25

    申请号:US82097

    申请日:1987-08-05

    摘要: The a system includes a visual inspection unit, a plating thickness inspection unit, and a shape inspection unit, suitably arranged in combination on the inspection line for automatic inspection of stains, flaws, glossiness or deformation in plated IC lead frames. The system can be used by an inventive method to correct errors in positional relation between a reference image and images input from an inspection camera, to obtain a comparison between a reference luminance curve and the individual luminance curves and the correlation between reflectivity and the corresponding area, and to obtain a comparison between the reference correlation and individual correlations to thereby enhance automation and precision in inspection IC lead frames.

    摘要翻译: 该系统包括在检查线上组合适当地布置的可视检查单元,电镀厚度检查单元和形状检查单元,用于自动检查电镀IC引线框架中的污渍,缺陷,光泽度或变形。 可以通过本发明的方法来使用该系统来校正参考图像和从检查照相机输入的图像之间的位置关系中的误差,以获得参考亮度曲线和各个亮度曲线之间的比较以及反射率与相应面积之间的相关性 并且获得参考相关性和各个相关性之间的比较,从而提高检查IC引线框架的自动化和精度。

    Electromagnetic brake
    7.
    发明授权
    Electromagnetic brake 失效
    电磁制动器

    公开(公告)号:US5485901A

    公开(公告)日:1996-01-23

    申请号:US768659

    申请日:1991-10-11

    IPC分类号: H02P15/00

    CPC分类号: H02P15/00

    摘要: An electromagnetic brake comprises a plurality of electromagnetic coils disposed on a stationary part of a drive force supply unit and producing a magnetic field in response to energizing currents supplied thereto, a rotor made of a conductive material and disposed on a rotary shaft of the drive force supply unit and positioned so as to rotate in the magnetic field and produce an eddy current in the rotor. The eddy current converts the rotational energy imparted to the rotor through the shaft into heat and generates a breaking force. A switching unit connected to the electromagnetic coils selectively controls the flow of energizing current to the coils in accordance with switching data supplied thereto by a control unit, responsive to external control data, for selectively controlling the ON/OFF ratio of energizing current flow to the electromagnetic coils.

    摘要翻译: PCT No.PCT / JP91 / 00177 Sec。 371日期1991年10月11日 102(e)日期1991年10月11日PCT 1991年2月14日提交PCT公布。 WO91 / 12657 PCT出版物 日期:1991年8月22日。电磁制动器包括设置在驱动力供给单元的固定部分上的多个电磁线圈,并且响应于供给的通电电流产生磁场,由导电材料制成的转子 驱动力供给单元的旋转轴,并且定位成在磁场中旋转并在转子中产生涡流。 涡流将通过轴传递给转子的旋转能量转换成热量并产生断裂力。 连接到电磁线圈的开关单元根据外部控制数据,根据控制单元提供的切换数据选择性地控制向线圈的通电电流,以选择性地控制到达线圈的通电电流的开/关比 电磁线圈。