PCB News - Frequent problems in PCB drilling production

Frequent problems in PCB drilling production

When we drill the PCB, everyone knows that there is a cover on the substrate to protect the PCB surface to prevent indentation. Not only can it reduce burrs, but it can also prevent slippage on the copper surface during the drilling process. In addition, not all PCB drilling uses the same cover plate. That is to say, different PCB drilling holes need to choose cover plates and backing plates of different thicknesses. So what problems do we have when drilling? The editor of PCB factory will give you a brief explanation.

1. Prevent the hole position from shifting

That is, the drill bit shifts during the drilling process or the cover material is not suitable, the base material expands and shrinks, which causes the hole position to deviate, and the drill bit resonates during the operation; the collet is not clean or damaged; the production board and the panel are biased holes The position or the entire stack position is offset; the drill bit slips when it touches the cover plate.

2. Avoid missing holes

At present, the design hole diameter needs to be enlarged during the production of mechanical drilling. The tin plate needs to be enlarged by 0.15mm. The gold plate needs to be enlarged by 0.1mm. Whether the distance between the skins can meet the processing requirements must be considered. If the pads cannot be increased by the CAM engineers due to the spacing issue, the board cannot be processed and produced.

The above are the problems that often occur in PCB drilling production. In actual operation, more measurements and inspections should be performed, and production should be carried out in strict accordance with the specifications. This is also a great benefit for controlling the quality of drilling and production failures, and for improving product quality, Improvi

The identification of the broken drill tip is unclear or suspended in the middle, the program is deleted unintentionally, and the drilling rig misses the reading while reading the data.

3. Avoid critics

The main reason is that the drill tip is severely worn, there are debris between the substrate and the substrate, and the substrate and the bottom plate; the substrate is bent and deformed to form a gap.ng production efficiency is also of great help.

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