Drilling method for circuit board

A circuit board and hole diameter technology, applied in the field of circuit board manufacturing, can solve the problems of reduced processing efficiency, affecting production efficiency, difficulties, etc., and achieve the effect of reducing hole blasting and improving drilling efficiency

Inactive Publication Date: 2012-09-26
ZHENJIANG HUAYIN PRINTED CIRCUIT BOARD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, direct drilling is used when machining Φ4.0mm on CNC machine tools. Due to the large resistance when drilling with a large drill bit, the pressure on the substrate is likely to cause delamination of the substrate at the edge of the hole, resulting in poor hole blasting. Even if the speed is increased and the drilling speed is reduced It is impossible to reduce the defect rate, but the method of milling can avoid hole blasting, but the processing efficiency is reduced by nearly 1 / 3, which seriously affects the production efficiency, and makes the CNC machine tools fall into the dilemma of quality or efficiency when machining Φ4.0mm

Method used

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Embodiment Construction

[0011] Below in conjunction with specific embodiment, further illustrate the present invention, it should be understood that following specific embodiment is only for illustrating the present invention and is not intended to limit the scope of the present invention, after reading the present invention, those skilled in the art will understand various aspects of the present invention All modifications of the valence form fall within the scope defined by the appended claims of the present application.

[0012] The invention discloses a method for drilling a circuit board. The drilling operation is performed by using a numerical control machine tool. The method includes the following steps:

[0013] (1) Screen out the holes that need to be drilled ΦX≥4.0mm, where X is the diameter of the hole;

[0014] (2) Drill the screened holes for the first time according to Φ (X-2.0) mm, and then drill the holes for the second time according to ΦX;

[0015] Wherein, if there are several hol...

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PUM

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Abstract

The invention discloses a drilling method for a circuit board. A small hole is primarily drilled for a hole with the aperture PhiX of more than or equal to 4.0mm, and then is secondarily drilled to form a large hole with the complete aperture, so that popping can be effectively reduced. Holes with the same aperture can be drilled at the same time, so that the drilling efficiency can be remarkably improved.

Description

technical field [0001] The invention relates to the field of circuit board manufacturing, in particular to a method for drilling a circuit board. Background technique [0002] At present, direct drilling is used when machining Φ4.0mm on CNC machine tools. Due to the large resistance when drilling with a large drill bit, the pressure on the substrate is likely to cause delamination of the substrate at the edge of the hole, resulting in poor hole blasting. Even if the speed is increased and the drilling speed is reduced It is impossible to reduce the defect rate, and the method of milling can avoid hole blasting, but the processing efficiency is reduced by nearly 1 / 3, which seriously affects the production efficiency, and makes the CNC machine tools fall into the dilemma of quality or efficiency when machining Φ4.0mm. [0003] Therefore, a new technical solution is needed to solve the above problems. Contents of the invention [0004] Aiming at the problems and deficiencies...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B35/00B26F1/16
Inventor 钱小进
Owner ZHENJIANG HUAYIN PRINTED CIRCUIT BOARD
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