PCB (printed circuit board) drilling process

Abstract

The invention discloses a PCB (printed circuit board) drilling process, which adopts a plurality of cutters to sequentially perform two different processing modes such as multi-stage drilling and compensation milling to process a through hole of a PCB, and ensures that the deformation in the through hole processing process is small, so that the processing efficiency of the PCB is improved, and the processing quality of the PCB is improved. The drilling hole position precision and the through hole diameter are within a preset tolerance range. According to the PCB drilling technology, the through holes of the PCB are machined in two different machining modes of multi-stage drilling, compensation milling and the like in sequence through multiple cutters, so that deformation in the through hole machining process is small, the drilling hole position precision and the through hole diameter are both within the preset tolerance range, and the machining precision of the PCB is improved. The problems that through holes are large in top and small in bottom and different in diameter in conventional machining are completely eradicated, multiple tools share milling pressure in turn in the machining process, the tools are not prone to being broken, and the reliability of the machining technology and the yield of PCB machining are guaranteed.

Description

technical field [0001] The invention relates to the technical field of PCB circuit board processing, in particular to a PCB circuit board drilling process. Background technique [0002] PCB circuit board, also known as printed circuit board, is an important electronic component, a support for electronic components, and a carrier for electrical connections of electronic components. Because it is made by electronic printing, it is called a "printed" circuit. plate. [0003] At present, in the process of PCB circuit board production, it is often necessary to drill several holes with different apertures on the PCB board for component insertion or conduction. However, the current drilling process of PCB boards usually uses the first single type of drill from the One side of the PCB board is completely drilled through the other side. Although this processing technology can achieve the expected purpose, when the PCB board reaches a certain thickness, it is affected by the gap betw...

AI Technical Summary

Problems solved by technology

[0003] At present, in the process of PCB circuit board production, it is often necessary to drill several holes with different apertures on the PCB board for component insertion or conduction. However, the current drilling process of PCB boards usually uses the first single type of drill from the One side of the PCB board is completely drilled through the other side. Although this processing technology can achieve the expected purpose, when the PCB board reaches a certain thickness, it is affected by the gap between the drill bit and the processed PCB board semi-finished product. Under the action of mechanical impact, the deformation of the drill bit increases, which easily leads to a decrease in the accuracy of the drilled hole position, and the size of the processed through hole does not meet the tolerance requirements. The most common problem is the diameter of the top of the processed through hole Larger than the standard value, and its bottom diameter is now smaller than the standard value, which cannot meet the requirements, and the probability of interrupting the drill during the drilling process is high. Therefore, in view of the above problems, this application will provide a PCB Circuit board drilling process to solve