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Processing method for improving drilling burrs

A processing method and burr technology, applied in the direction of electrical components, printed circuit manufacturing, printed circuits, etc., can solve the problems of high functional requirements of time-consuming equipment, reduce production efficiency, increase economic costs, etc., achieve high production efficiency, improve quality, The effect of removing burrs

Active Publication Date: 2021-04-30
珠海杰赛科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is also reported in the prior art to solve the burr problem by drilling at three or more different positions and using different sizes of apertures. However, this drilling method has too many times of drilling, which greatly reduces production efficiency, and changing the drilling position requires Time-consuming and high functional requirements of the equipment, further increasing the economic cost of production

Method used

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  • Processing method for improving drilling burrs
  • Processing method for improving drilling burrs
  • Processing method for improving drilling burrs

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Experimental program
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Effect test

Embodiment 1

[0030] Embodiment 1: Improve the processing method of drilling burr

[0031] A processing method for improving drilling burrs, comprising the following steps:

[0032] Lay the PCB to be drilled flat, fix it, and then use a drill to drill the first hole and the second hole on the same position of the PCB; the diameter of the second drilled hole is 0.01mm larger than that of the first drilled hole ;The hole diameter of the first drilling is 1mm; keep the position of the PCB fixed during the first drilling and the second drilling.

[0033] figure 1 It is the schematic diagram of the holes formed by drilling for the first time and drilling for the second time in embodiment 1, wherein, figure 1 100 in the figure represents the hole formed by the first drilling, and 200 represents the hole formed by the second drilling, and the diameter of the hole formed by the second drilling is larger than that of the hole formed by the first drilling.

Embodiment 2

[0034] Embodiment 2: Improve the processing method of drilling burr

[0035] A processing method for improving drilling burrs, comprising the following steps:

[0036] Lay the PCB to be drilled flat, fix it, and then use a drill to drill the first and second holes at the same position on the PCB; the diameter of the second drilled hole is 0.05mm larger than that of the first drilled hole ;The hole diameter of the first drilling is 2mm; keep the position of the PCB fixed during the first drilling and the second drilling.

Embodiment 3

[0037] Embodiment 3: the processing method of improving drilling burr

[0038] A processing method for improving drilling burrs, comprising the following steps:

[0039] Lay the PCB to be drilled flat, fix it, and then use a drill to drill the first hole and the second hole on the same position of the PCB; the diameter of the second drilled hole is 0.01mm larger than that of the first drilled hole ;The hole diameter of the first drilling is 1mm; keep the position of the PCB fixed during the first drilling and the second drilling.

[0040] During the second drilling process, the drilling fluid is coated on the surface of the drill bit; the composition of the drilling fluid includes: 12 parts of acrylic resin, 8 parts of fatty alcohol polyoxyethylene ether, 5 parts of sodium dodecylsulfonate, ten parts 10 parts of dialkyl sodium sulfate and 30 parts of alcohol; the preparation method of the drilling fluid is as follows: stirring and mixing the components; the stirring speed is ...

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Abstract

The invention belongs to the technical field of PCB preparation, and particularly relates to a processing method for improving drilling burrs. The method comprises the following steps: flatly placing and fixing a PCB to be drilled, and then drilling the PCB for the first time and the second time by using a drill bit, wherein the hole diameter of the second-time drilled hole is 0-0.05 mm larger than that of the first-time drilled hole; and in the second drilling process, coating the surface of the drill bit with a drilling liquid, wherein the drilling fluid is prepared from resin, ether, a surfactant and alcohol. The PCB is drilled in a two-time drilling mode, the proper hole diameter of the second-time drilled hole has a remarkable improvement effect on removing burrs in the hole, the drill bit used in the second-time drilling process is coated with the drilling fluid, the problem that a small amount of burrs possibly occur in the second-time drilling process can be fundamentally solved, and the quality of the PCB is improved; and the processing method provided by the invention is helpful for improving the production efficiency of the PCB.

Description

technical field [0001] The invention belongs to the technical field of PCB preparation, and in particular relates to a processing method for improving drilling burrs. Background technique [0002] In the production process of printed circuit board (PCB), due to the influence of many factors such as material selection, structure design, circuit design, pressing process and drilling process, there are some common problems in the produced PCB, which affect the PCB. product quality and production efficiency. [0003] In the prior art, PCBs often have product quality problems caused by the production of many burrs in one drilling process. It is also reported in the prior art to solve the burr problem by drilling at three or more different positions and using different sizes of apertures. However, this drilling method has too many times of drilling, which greatly reduces production efficiency, and changing the drilling position requires Time-consuming and high functional require...

Claims

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Application Information

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IPC IPC(8): H05K3/00
CPCH05K3/0047H05K2203/0214
Inventor 雷石海房鹏博陈炼关志锋
Owner 珠海杰赛科技有限公司
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