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Formation method for irregularly-shaped hole of printed circuit board

A molding method and technology of special-shaped boards, which are applied in printed circuits, printed circuit manufacturing, electrical components, etc., can solve problems such as easy deformation, slot length, etc., to reduce the amount of dust, solve serious burrs, and improve hole positions The effect of precision

Inactive Publication Date: 2018-11-06
江西旭昇电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process will not only result in a shorter slot length, but also easily deform the connecting position of the two slots

Method used

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  • Formation method for irregularly-shaped hole of printed circuit board
  • Formation method for irregularly-shaped hole of printed circuit board
  • Formation method for irregularly-shaped hole of printed circuit board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] In this embodiment, hole A and hole B are circular holes respectively. Please refer to figure 1 and figure 2 ,in figure 1 The block flow diagram of Embodiment 1 of the forming method of the printed circuit board special-shaped hole provided by the present invention; figure 2 It is a schematic diagram of superimposing all drilled holes in the process of machining special-shaped holes using the molding process of Example 1.

[0053] A method for forming a special-shaped hole in a printed circuit board, comprising the steps of:

[0054] Step S1a, drill three first pre-drilled holes 11 / 12 / 13 in the reserved position of hole A, wherein the three first pre-drilled holes 11 / 12 / 13 are distributed in a triangle, and the first pre-drilled holes 11 / 12 / 13 are circular respectively;

[0055] Specifically, the three first pre-drilled holes 11 / 12 / 13 are located in the reserved position of the A hole, and the area of ​​the three first pre-drilled holes 11 / 12 / 13 is smaller than ...

Embodiment 2

[0064] In this embodiment, hole A is a slotted hole, and hole B is a round hole. Please refer to image 3 , Figure 4 ,in image 3 The block flow diagram of Embodiment 2 of the forming method of the printed circuit board special-shaped hole provided by the present invention; Figure 4 It is a schematic diagram of superimposing all drilled holes during the machining of special-shaped holes using the molding process of Example 2.

[0065] A method for forming a special-shaped hole in a printed circuit board, comprising the steps of:

[0066] Step S1b, drill the first pre-drilled holes 21 / 22 defining the slot length at the two ends of the reserved position of hole A respectively, wherein the first pre-drilled holes 21 / 22 are round holes;

[0067] Specifically, the first pre-drilled hole 21 / 22 is located in the reserved position of the A hole, preferably, the first pre-drilled hole 21 / 22 is partially tangent to the A hole;

[0068] Step S2b, drilling three second pre-drilled...

Embodiment 3

[0076] In this embodiment, hole A and hole B are respectively slotted holes. Please refer to Figure 5 , Figure 6 ,in Figure 5 The block flow diagram of Embodiment 3 of the forming method of the printed circuit board special-shaped hole provided by the present invention; Figure 6 It is a schematic diagram of superimposing all drilled holes in the process of machining special-shaped holes using the molding process of Example 3.

[0077] A method for forming a special-shaped hole in a printed circuit board, comprising the steps of:

[0078] Step S1c, respectively drill the first pre-drilled holes 31 / 32 defining the length of the slot at the two ends of the reserved position of hole A, and the first pre-drilled holes 31 / 32 are round holes;

[0079] Specifically, the first pre-drilled hole 31 / 32 is located in the reserved position of the A hole, preferably, the first pre-drilled hole 31 / 32 is partially tangent to the A hole;

[0080] Step S2c, drill out the second pre-dril...

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Abstract

The invention discloses a formation method for an irregularly-shaped hole of a printed circuit board. The formation method comprises the steps of drilling at least two first pre-drilling holes in an Ahole reservation position; drilling at least two second pre-drilling holes in a B hole reservation position; respectively drilling remaining parts at the reservation positions according to the shapesand the sizes of the A hole and the B hole so that the A hole and the B hole intersect and the irregularly-shaped hole is formed. According to the formation method for the irregularly-shaped hole ofthe printed circuit board, provided by the invention, hole formation can be prevented, and the hole accuracy of the irregularly-shaped hole can be improved.

Description

technical field [0001] The invention relates to the technical field of printed circuit board production, in particular to a method for forming a special-shaped hole in a printed circuit board. Background technique [0002] PCB (Printed Circuit Board, printed circuit board) is an important electronic component, a support for electronic components, and a carrier for electrical connections of electronic components. [0003] According to the functional design of the PCB board, it is necessary to make various holes on the PCB board to meet different functional requirements, such as buried holes, blind holes, through holes and other special-shaped holes. In related technologies, special-shaped holes mainly include continuous holes, continuous hole slots, and continuous slots. Among them, continuous holes refer to the intersection of round holes and round holes, continuous hole slots refer to the intersection of round holes and slot holes, and continuous slots refer to slots. Inte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K3/00
CPCH05K3/0047
Inventor 董猛卢重阳卢根平汤文波
Owner 江西旭昇电子有限公司
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