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Circuit board and drilling method of circuit board

A drilling method and circuit board technology, which is applied in the fields of printed circuit, printed circuit manufacturing, electrical components, etc., can solve the problems of drill bit breakage, affecting the production efficiency of circuit board, etc.

Inactive Publication Date: 2020-06-30
GUANGZHOU FASTPRINT CIRCUIT TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional drilling method is easy to cause the needle breakage of the drill bit during the drilling process, which in turn affects the production efficiency of the circuit board

Method used

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  • Circuit board and drilling method of circuit board
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Embodiment Construction

[0025] In order to make the above objects, features and advantages of the present invention more comprehensible, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific implementations disclosed below.

[0026] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to t...

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Abstract

The invention relates to a circuit board and a drilling method of the circuit board. The circuit board is drilled to form the first hole, the hole diameter of the first hole is smaller than that of the target hole, and when the second hole is drilled, a part of material is cut by drilling the first hole, so that the chip removal requirement for drilling the second hole is reduced; meanwhile, as the drilling area of the first hole is located in the drilling area of the second hole, the hole wall of the first hole can be used for providing supporting and guiding effects for drilling of the second hole, and the breaking risk of the drill bit is reduced. Due to the fact that the hole depth of the first hole is smaller than that of the target hole, the chip removal requirement for drilling thefirst hole and the blade length requirement of the drill bit are lowered, and the problem that in the process of drilling the first hole, the drill bit is broken due to the large drilling depth or chip removal problem of the drill bit is effectively solved. According to the drilling method of the circuit board, especially in the machining process of the circuit board with the high thickness-diameter ratio, the target hole can be formed only through two drilling steps, the drilling steps are simplified, the drilling efficiency is improved, and the production efficiency of the circuit board is improved.

Description

technical field [0001] The invention relates to the technical field of circuit board production, in particular to a circuit board and a drilling method for the circuit board. Background technique [0002] The traditional method of drilling a circuit board is to select a drill bit with the same diameter as the target hole, and to drill the target hole once or more times. However, the traditional drilling method is prone to breakage of the drill bit during the drilling process, thereby affecting the production efficiency of the circuit board. Contents of the invention [0003] Based on this, it is necessary to address the above problems and provide a circuit board and a circuit board drilling method that reduce the phenomenon of drill bit breakage. [0004] A drilling method for a circuit board, comprising: [0005] Drilling holes on the circuit board to form a first hole, the aperture of the first hole is smaller than the aperture of the target hole, and the depth of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K3/00
CPCH05K3/0047
Inventor 谭清奇罗畅李艳国
Owner GUANGZHOU FASTPRINT CIRCUIT TECH
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