Drilling method for circuit board

A drilling method and circuit board technology, applied in the directions of printed circuits, printed circuit manufacturing, electrical components, etc., can solve the problems of inability to drill through the PCB board at one time, low hole position accuracy, and scrapped PCB boards, so as to avoid resistance to deformation. The ability is weakened, the hole position error is avoided, and the effect of high precision is guaranteed

Active Publication Date: 2014-04-30
GUANGZHOU FASTPRINT CIRCUIT TECH +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the drilling process of PCB boards is to use a drill to completely drill through from one side of the PCB to the other. For PCB boards with a high thickness-to-diameter ratio, when using ordinary drills to drill holes, it is limited by the length of the blade and cannot be drilled at one time. When using a drill with a longer edge length, it is easy to break because the strength of the drill is reduced. Once the drill is broken, it is difficult to take it out from the PCB, and the PCB will inevitably be scrapped.
Moreover, board

Method used

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  • Drilling method for circuit board

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Embodiment Construction

[0023] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] A method for drilling a circuit board, comprising the following steps:

[0025] 1. Setting of positioning target and direction target.

[0026] Such as figure 1 As shown, the positioning target 1 and the direction target 2 are set on the circuit board, and the positioning target 1 is four, which are respectively arranged on the four corners of the circuit board, and the four positioning targets 1 are the endpoints Positioning graphics that make up a rectangle. The direction target 2 is a positioning target located on one side of the rectangular positioning figure and close to the end point of the side, with a distance of 5-6 mm from the positioning target.

[0027] According to the above design, when making the inner layer graphics, the graphics of the positioning target and the direction target are produced on each layer of the inn...

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Abstract

The invention discloses a drilling method for a circuit board and belongs to the technical field of circuit board production. The drilling method comprises the following steps of setting a positioning target and a directional target on the circuit board, drilling a positioning hole in the positioning target and drilling a directional hole in the directional target; enabling the number of the directional target to be one and arranging the directional target in an area which is outside a horizontal central line and a longitudinal central line; identifying the direction of the circuit board through the directional hole, enabling a pin to penetrate the positioning hole and installing and fixing the circuit board and a cover plate; drilling the circuit board in the front side and the rear side and enabling the drilled holes in the front side and the rear side to be through holes. The drilling method for the circuit board can achieve circuit board drilling with the high thickness-diameter ratio and obtain high accuracy hole location.

Description

technical field [0001] The invention relates to a method for preparing a circuit board, in particular to a method for drilling a circuit board. Background technique [0002] Drilling is a very important process in the PCB manufacturing process. Drilling holes on the circuit board is mainly used for the welding of circuit board components and the conduction between layers. At present, the drilling process of PCB boards is to use a drill to completely drill through from one side of the PCB to the other. For PCB boards with a high thickness-to-diameter ratio, when using ordinary drills to drill holes, it is limited by the length of the blade and cannot be drilled at one time. When using a drill with a longer blade length, it is easy to break because the strength of the drill is reduced. Once the drill is broken, it is difficult to take it out from the PCB, and the PCB will inevitably be scrapped. Moreover, board thickness is a very critical factor affecting the accuracy of the...

Claims

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Application Information

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IPC IPC(8): B23B35/00
CPCH05K3/0047H05K2203/1476H05K2203/167B23B35/00
Inventor 任小浪陈蓓樊光辉
Owner GUANGZHOU FASTPRINT CIRCUIT TECH
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