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Burr preventive forming method for splayed holes of PCB (printed circuit boards)

A technology of PCB board and forming method, which is applied in the field of anti-burr forming of the eight-character hole of PCB board, can solve the problems of poor burr in the hole, lower product quality, waste of raw materials, etc., and achieve the effect of simple structure, improved quality, and saved raw materials

Inactive Publication Date: 2017-02-22
GUANGDONG KINGSHINE ELECTRONICS TECH CO LTD
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AI Technical Summary

Problems solved by technology

[0003] In the production of existing PCB boards, when drilling special-shaped holes, the burrs in the holes are not good, especially the gourd holes with 1.1mm slot holes + 2.45mm round holes, 100% of the burrs in the holes are bad, which greatly reduces the quality of the product. Raw materials are wasted and costs are increased

Method used

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  • Burr preventive forming method for splayed holes of PCB (printed circuit boards)

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Embodiment approach

[0022] An embodiment provided by the present invention is: a method for forming a burr-proof hole on a PCB board, the forming method comprising the following steps:

[0023] S1. Determine the center D1 and diameter d1 of the eight-character hole 1 and the center D2 and diameter d2 of the hole 2 on the PCB according to the design requirements;

[0024] S2. Set the line segment at the widest point of the intersection of hole 1 and hole 2 as a, the line segment a is on the straight line where the centers of holes 1 and 2 are located, and determine the center of hole 3 in the intersecting interval between hole 1 and hole 2 D3 and diameter d3, wherein the center D3 of hole three is located at the center of line segment a;

[0025] S3. Set the center and diameter of hole four, wherein the center of hole four coincides with hole three, and the diameter of hole four is d4=d3+0.05mm;

[0026] S4. Drilling the PCB board, taking the center D3 as the center, and processing the hole three...

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Abstract

The invention provides a burr preventive forming method for splayed holes of PCB (printed circuit boards). The burr preventive forming method has the advantages that the problem of burr of existing splayed holes can be effectively solved, the internal burr defect rate of the improved holes can be controlled and is within the range of 5%, accordingly, the quality of products can be improved, and raw materials can be saved.

Description

technical field [0001] The invention belongs to the technical field of PCB boards, and in particular relates to a burr-proof forming method for a character-shaped hole of a PCB board. Background technique [0002] In recent years, China's economic structure has changed a lot. In the Internet era, Industry 4.0, Internet of Things, and industrial structure upgrades will have a profound impact on traditional manufacturing. At the same time, this evolution process is full of various challenges. and opportunity. The market competition in the PCB industry is fierce. The miniaturization of PCB board design and the development of higher product levels will encounter various difficulties in the production process. Engineering technology is the foundation of an enterprise. Pragmatic basic data, simulated production, and excellent product process design can be effective. reduction of scrap. In the PCB process, drilling is a very critical process, which directly determines the struc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K3/00
Inventor 李叶飞柳超付建云
Owner GUANGDONG KINGSHINE ELECTRONICS TECH CO LTD
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