Burr-free special-shaped hole machining method

By opening grinding holes covering burrs at the intersection of special-shaped holes of the PCB board, the burr problem in special-shaped hole processing is solved, and the burr-free processing effect is achieved, shortening production time and improving production efficiency.

CN119653609APending Publication Date: 2025-03-18TRUSTECH ELECTRONICS
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Patent Information

Application Number
CN202411830667.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-12
Publication Date
2025-03-18

AI Technical Summary

Technical Problem

During the processing of special-shaped holes of PCB boards, burrs are prone to occur, resulting in manual polishing, increasing production time and cost, and high requirements for the experience of operators.

Method used

By opening a grinding hole at the intersection of the special-shaped holes, the projected area formed by the hole diameter of the grinding hole completely covers the burrs formed at the intersection, thereby removing the burrs.

Benefits of technology

The burr-free special-shaped hole processing is achieved, eliminating subsequent manual grinding processes, shortening construction time, and improving production speed and enterprise competitiveness.

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Abstract

The invention discloses a burr-free special-shaped hole processing method, which comprises the following steps of: obtaining a PCB (Printed Circuit Board), and forming a special-shaped hole in the PCB; grinding and puncturing holes are formed in the intersection positions of the special-shaped holes, and the projection area formed by the hole diameters of the grinding and puncturing holes completely covers burrs formed in the intersection positions so that the burrs at the intersection positions can be removed; the burr grinding holes are additionally arranged to grind burrs on the hole wall of the special-shaped hole, so that the technical effect of no burrs is achieved, and subsequent manual grinding is avoided.
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