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Printed circuit board inspection apparatus

  • US 5,107,206 A
  • Filed: 05/20/1991
  • Issued: 04/21/1992
  • Est. Priority Date: 05/25/1990
  • Status: Expired due to Fees
First Claim
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1. Printed circuit board inspection apparatus comprising:

  • mounting means to fix a printed circuit board at a predetermined position;

    two or more guide sets each composed of a pair of upper and lower crossbar assemblies, each crossbar assembly having an arm suspending from the crossbar assembly and equipped with at least one inspection probe at its end, and driving means to drive the crossbar assembly in an X-direction above said printed circuit board, and to drive said arm in a Y-direction perpendicular to said X-direction and raise or lower associated probe; and

    a central processing unit to command said driving means to bring selected inspection probes to selected positions above said printed circuit board and to lower such inspection probes until they come to contact the terminals of selected discrete circuit elements or printed circuit for detecting short-circuits or disconnections if any, in said printed circuit board, or for determining the kind or function each of said selected discrete circuit elements,whereby the inspection probes of one guide set are making an inspection on a selected circuit element or printed circuit while the inspection probes of the other guide set are running to another selected position in which another inspection is to be performed under the control of said central processing unit.

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