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Quick processing method of internal nut stage hole PCB

A built-in nut, PCB board technology, applied in electrical components, printed circuit manufacturing, printed circuits, etc., can solve the problem of slow nut step hole PCB board efficiency and inability to mass production, to improve production efficiency, improve production efficiency, and save money. effect of time

Active Publication Date: 2018-10-02
HUIZHOU KING BROTHER CIRCUIT TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention starts from the PCB board processing flow and the equipment process capability, carries out further technical development on the process capability of the drilling equipment, designs a special built-in nut step hole PCB board processing flow, realizes rapid production, and solves the problem of nut steps produced by CNC milling machines The technical problem that the efficiency of perforated PCB boards is slow and cannot be mass-produced

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A fast processing method of PCB board with built-in nut step hole, according to the following steps:

[0026] S1, prepare the base material according to the specifications to complete the cutting operation, and follow the normal processing flow of the built-in nut step hole PCB board to electroplating, and then transfer to the drilling process to drill the built-in nut step hole after the drawing is completed;

[0027] S2, the step hole design of the built-in nut: the upper diameter of the built-in nut is measured as 4mm, the length of the bevel is 3.5mm, and the height is 2mm, according to the calculation formula θ 1 =ArcSin (B÷E) calculates the top angle of the nut as 45°, and then calculates the angle at the bottom of the drill tip as 90° according to the calculation formula θ=180°-2×θ1, and the design unit drills the number of stepped holes for the built-in nut 200 pieces, 30 pieces are produced in batches, the drill nozzle is selected according to the upper diameter of t...

Embodiment 2

[0031] A fast processing method of PCB board with built-in nut step hole, according to the following steps:

[0032] S1, prepare the base material according to the specifications to complete the cutting operation, and follow the normal processing flow of the built-in nut step hole PCB board to electroplating, and then transfer to the drilling process to drill the built-in nut step hole after the drawing is completed;

[0033] S2, the step hole design of the built-in nut: the upper diameter of the built-in nut is measured as 6mm, the length of the hypotenuse is 10mm, and the height is 3mm, according to the calculation formula θ 1 =ArcSin (B÷E) calculates that the top angle of the nut is 15°, and then calculates the angle at the bottom of the drill tip to be 150° according to the calculation formula θ=180°-2×θ1, and the design unit drills the number of step holes for the built-in nut For 127, mass production of 90 plates, the drill nozzle is selected according to the upper diameter of...

Embodiment 3

[0037] A fast processing method of PCB board with built-in nut step hole, according to the following steps:

[0038] S1, prepare the base material according to the specifications to complete the cutting operation, and follow the normal processing flow of the built-in nut step hole PCB board to electroplating, and then transfer to the drilling process to drill the built-in nut step hole after the drawing is completed;

[0039] S2, the step hole design of the built-in nut: the upper diameter of the built-in nut is measured to be 4mm, the bevel length is 2.3mm, and the height is 2mm, according to the calculation formula θ 1 =ArcSin (B÷E) calculates the top angle of the nut as 30°, and then calculates the angle at the bottom of the drill tip as 120° according to the calculation formula θ=180°-2×θ1, and the design unit drills the number of step holes for the built-in nut For 83 plates, 70 plates were mass-produced, the drill nozzle was selected according to the upper diameter of the nut ...

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Abstract

The invention discloses a quick processing method of an internal nut stage hole PCB. The quick processing method comprises the following steps of S1, preparing a base material based on specificationsto complete a cutting operation, and performing manufacturing until electroplating according to the normal processing process of the internal nut stage hole PCB, after a pattern tin electroplating iscompleted, performing a drilling procedure to drill an internal nut stage hole; S2, designing of the internal nut stage hole: measuring the upper diameter, length of inclined edges and height of an internal nut, working out an angle at the bottom of a drill bit, selecting a drill bit according to the upper diameter of the nut and the angle at the bottom of the drill bit, and setting the depth of the internal nut stage hole according to the height of the nut; S3, processing of internal nut stage hole: selecting a drill with depth finding and finding functions to complete drilling according to the designed parameters of the internal nut stage hole designed in the step S2; and S4, after drilling of the internal nut stage hole is completed, performing an electroplating etching procedure to perform continuous production to prepare a finished product. The quick processing method has the advantages of improvement of production efficiency, lowering of production cost, improvement of processingprecision and the like.

Description

Technical field [0001] The invention relates to the field of PCB board processing, in particular to a fast processing method for a built-in nut step hole PCB board. Background technique [0002] Power supply modules, smart optoelectronics, digital systems and other equipment are increasingly adopting highly integrated and modular installation modes for the convenience of maintenance workers. The fastening nuts of this type of board are basically embedded in the PCB board, and the bottom of the nut is flush with the bottom of the circuit board, which not only saves space, but also prevents the metal screw from contacting the device shell to form a short circuit or leakage. [0003] Inlay nut PCB needs to cut out the PCB before pressing, and then fix the nut in the PCB by hot pressing with a press. There are certain deviations in the circuit board production process, so the process is difficult and the quality is difficult to guarantee. Maintenance is extremely inconvenient. If the ...

Claims

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Application Information

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IPC IPC(8): H05K3/00
CPCH05K3/0047H05K2203/0214
Inventor 乔元聂兴培武守坤陈春林映生卫雄唐宏华樊廷慧
Owner HUIZHOU KING BROTHER CIRCUIT TECH
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