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Processing and shaping method of PCB

A technology for processing and forming PCB boards, which is applied in PCB positioning during processing, processing of insulating substrate/layer, mechanical/acoustic circuit processing, etc. Problems such as high processing costs achieve the effects of small mechanical tolerances, fast chip removal, and increased production capacity

Inactive Publication Date: 2017-01-04
安徽广德威正光电科技有限公司
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AI Technical Summary

Problems solved by technology

[0004] In general, the boards processed by the milling machine have good appearance quality and high dimensional accuracy. However, due to the small size of the boards and the relatively complicated shape, the dimensional accuracy of the milled shape is not easy to control.
When milling the shape, due to the limitation of the inner arc, the size of the inner angle and the width of the milling groove, the choice of the size of the milling cutter has great limitations; when facing a large number of small-sized PCBs, often choose punching The shape of the way, but the processing cost of this way is very high

Method used

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Embodiment Construction

[0013] A method for processing and forming a PCB board is characterized in that it mainly includes the following steps: (1) the upper process is used to carry the board; (2) V-grooves are opened, and CNC automatic equipment is used to realize straight, long and fast cutting shapes, and The best angle for opening V-groove is 45 degrees; (3) Gong plate, firstly carry out CNC numerical control program production, when making the program, adopt the combination of hole-groove positioning and auxiliary air clamp positioning to accurately position the gong plate The position can realize efficient upper and lower boards and fast chip removal. At the same time, choose a large-diameter gong knife with a knife diameter of 3.2mm to increase production capacity. Reduce the energy consumption of the material, and then carry out the first board test and dimensional inspection until it is qualified, and then produce, wash the board and the next process; (4) Gold finger bevel, where the angle b...

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Abstract

The present invention provides a processing and shaping method of a PCB. The method mainly comprises (1) a PCB feeding step the PCB; (2) a V-shaped groove making step of using a CNC automatic device to make a V-shaped groove, wherein the angle of the V-shaped groove is between 35 degrees and 90 degrees; (3) a PCB milling step of firstly adopting a CNC program to make, then milling the first board and inspecting the size until the size is qualified, then producing, cleaning the PCB and discharging; (4) a connecting finger bevel edge making step, wherein the included angle of the bevel edge and a horizontal line is between 15 degrees and 65 degrees, and the residual thickness is 1 / 3 of the thickness of the PCB; (5) a PCB cleaning step of firstly feeding the PCB, then using the hydrocarbon solvent PCB cleaning water to clean the surface of the PCB, wherein the temperature at cleaning is 30 DEG C, and cleaning time is 1-2 hours, and then carrying out the ultrasonic washing, blow-drying, drying and cooling operations, and discharging the PCB after cooling; (6) a discharging step.

Description

technical field [0001] The invention relates to the processing and manufacturing of PCB boards, in particular to a method for processing and forming PCB boards. Background technique [0002] Today, PCB board design is increasingly developing towards high density, multi-layer, and miniaturization. Due to different design intentions of customers, there are still some printed boards with relatively simple circuits, complex shapes, and very small unit sizes. When this type of plate is produced in batches, if it is processed according to the conventional production method, many quality problems will often appear in the process of shape processing, which will seriously affect the production efficiency. [0003] There are several methods for processing the shape of the PCB board: 1) Milling the shape, using a CNC milling machine to process the shape, it is necessary to provide the milling shape data and the corresponding positioning hole data. These data are provided by the program...

Claims

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Application Information

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IPC IPC(8): H05K3/00
CPCH05K3/0052H05K2203/02H05K2203/15
Inventor 袁胜巧
Owner 安徽广德威正光电科技有限公司
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