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PCB bell mouth manufacturing method

A manufacturing method and tapered hole technology, which can be used in printed circuit manufacturing, electrical components, printed circuits, etc., can solve problems such as untimely, and achieve the effects of improving efficiency, reducing costs, and high quality and reliability

Inactive Publication Date: 2017-11-24
AOSHIKANG TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As customer requirements become more and more stringent, this method is obviously outdated

Method used

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  • PCB bell mouth manufacturing method
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Embodiment

[0019] A method for manufacturing a tapered hole in a PCB, comprising the following steps:

[0020] (1) Select the tapered drill bit according to the size of the tapered hole, which is 0.4mm larger than the diameter of the drilled hole;

[0021] (2) Calculate the drilling depth according to the customer's requirements for the diameter of the tapered hole and write the result into the tapered hole drilling program; a is the radius of the tapered hole, b is the drilling depth of the drill bit, r / 2 is one-half of the drill point angle;

[0022] (3) Work in the order of the conventional drilling process: a. Install the backing board→b. Kind of pins→c. Put on the backing board→d. Put on the board to be drilled→e. "Mushroom head" presses the aluminum sheet → g. Then cover the cold stamping plate and stick it firmly with adhesive tape;

[0023] (4) Use a multimeter to confirm that the aluminum sheet and the machine table are conductive, and ensure that the only connection between ...

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Abstract

A PCB bell mouth manufacturing method comprises the following steps: 1, selecting a taper drill bit according to the bell mouth sizes; 2, calculating a drilling depth according to the client required bell mouth orifices bore diameter, and writing the result <b=a / tg(r / 2)> into a bell mouth boring program; 3, working in order according to a routine boring flow: a, mounting a joist plate; b, planting pins; c, loading a backing plate; d, loading a drilled plate; e, covering an aluminium sheet and pasting a gummed paper; f, starting a machine part mushroom head to press the aluminium sheet; g, covering a cold punching plate and using a gummed paper to firmly paste on same; 4, using an universal meter to confirm the aluminium sheet is connected with a drilling crew table top, and ensuring the unique coupling conduction portion between the aluminium sheet and the drilling crew table top is the mushroom head; 5, boring. The method calculates the drilling depth according to the tapper drilling bit angle and inputs the program, and the drilling crew can automatically make the bell mouth; the method is high in efficiency, and can make the precise bell mouths.

Description

technical field [0001] The invention belongs to the technical field of PCB board production, and in particular relates to a method for manufacturing a tapered hole in a PCB. Background technique [0002] In PCB application and installation, it is often necessary to use a screw rod with a "cap" for fixing. The tapered hole can prevent the screw cap from protruding from the PCB board, and can better fix it. In the past, due to the large tolerance of the tapered hole, the manufacturing method was relatively "rough". Generally, the height of the spindle is adjusted to be consistent first, and then the flatness of the board to be drilled is consistent (note: if the board is not flat, the depth of the tapered hole will be different), and then the depth of the drilled hole is calculated to make the tapered hole. After the production is completed Full inspection is required. As customer requirements become more and more stringent, this method is obviously outdated. Contents of t...

Claims

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Application Information

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IPC IPC(8): H05K3/00
CPCH05K3/0047H05K2201/09827
Inventor 曾海强陈志新王孔祥罗新权
Owner AOSHIKANG TECH CO LTD
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