Quality detection method of boring on printed circuit board

Abstract

The invention provides a quality detection method of boring on a printed circuit board, which comprises the following steps: 1) setting one or more test areas at edge area of a workpiece, arranging a test hole pattern in the test area; 2) positioning the workpiece, boring according to the test hole pattern to form a test hole; and 3) detecting the quality of the formed test hole, and boring the pattern aperture on an effective area of the workpiece when the detected test hole is qualified,. The boring quality detection method can effectively reduce the boring disability rate of the workpiece, product processing yield rate during a boring technology can be increased, and the production cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of printed circuit board production, and relates to a method for detecting the quality of drilling holes on a printed circuit board. Background technique [0002] During the processing of printed circuit boards (PCB boards), it involves multiple process steps such as material cutting-inner layer production-lamination-drilling-copper sinking-outer layer production-surface coating-shape processing, etc., in each process After the process is completed, corresponding inspections are required to ensure the quality of each process step. [0003] Wherein, the process steps of drilling include steps such as lamination pins-upper PCB board-drilling-bottom PCB board-detection, in the drilling process steps of the prior art, first in the edge area of ​​the workpiece (i.e. outside the workpiece circuit pattern) area) to drill the positioning hole, and then use the positioning hole for positioning, and then drill the gr...

AI Technical Summary

Problems solved by technology

However, for some printed circuit boards (including single-piece printed circuit boards) with small batch production volume, if the drilling deviation occurs on the first board, it means that the scrap rate must remain high; and for those material costs For higher-frequency printed circuit boards, if the drilling deviation of the first board is found during the inspection, it means a great waste of raw materials, which means that the production cost will increase significantly

[0005] As can be seen from the above, since the detection of the drilling quality in the prior art is carried out after all or part of the graphic holes in the effective area of ​​the workpiece are processed, once a drilling quality problem occurs, it will inevitably directly lead to the scrapping of the workpiece. As a result, the yield rate of drilling products is reduced and the production cost is increased; at the same time, it also affects the subsequent processing steps, which increases the PCB board processing cycle and reduces production efficiency.

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