Method for measuring and judging drill depth of PCB

Abstract

The invention discloses a method for measuring and judging drill depth of a PCB. The method comprises the following steps of step 1, measuring the drill depth of the PCB board by using a hole depth detecting tool to obtain a drill depth measurement result; and step 2, analyzing and judging the measurement result, wherein the step 1 further comprises that the detecting tool comprises a laser detector, which is moved by a transmission device to measure the depth of the plurality of drills located on the PCB board, and the measurement result further comprises aperture data; the step 2 further comprises the steps of comparing the measurement result with a preset threshold, marking the PCB board that satisfies the size standard judgment logic as qualified, and if not, marking a failure flag andnotifying the operation personnel. The method can flexibly and effectively detect the drill shape size of the PCB board, and can judge whether the PCB board is a qualified product according to the judgment logic, which improves the low efficiency of the current detection mode and possible causing of bad influence of poor feasibility.

Description

technical field [0001] The invention relates to the field of PCB board drilling detection, in particular to a method for measuring and judging the depth of PCB drilling. Background technique [0002] Today, with the continuous advancement of technology, drilling is very important in the production process of printed circuit boards (PCB). The simple understanding of drilling is to drill the required vias on the copper clad laminate, which has the function of providing electrical connections and fixing devices. If the operation is not correct, there will be problems in the via hole process, and the device cannot be fixed on the circuit board. At least, the entire board will be scrapped, and at worst, it will affect the normal operation of the circuit board or even fail. Therefore, the process of drilling holes is very important. For hole depth detection and measurement, especially circuit board drilling detection and its judgment are still the key to the production of industr...

AI Technical Summary

Problems solved by technology

At present, the depth detection of machine-drilled blind holes (also known as depth control drilling, blind drilling, and back drilling) is mostly performed manually, and there are cases of missed detection and false detection, and manual operation will inevitably lead to low efficiency. , prone to contamination

[0003] Based on the above reasons, the present invention proposes a method for measuring and judging the depth of PCB drilling holes, aiming at solving the problems of existing PCB board detection, and improving the probability that defective products or unqualified products are not detected in production

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