PCB plate double-face drilling and positioning method

A technology of PCB board and positioning method, which is applied in positioning devices, drilling/drilling equipment, components of boring machines/drilling machines, etc., can solve the problems of misalignment of zero points, easy breakage of drill bits, affecting product quality, etc., and achieve positioning accuracy. High, reduce deviation, improve the effect of pass rate

Inactive Publication Date: 2007-12-12
SHENNAN CIRCUITS
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Problems solved by technology

When using this drilling method, when the thickness and diameter of the plate is relatively large, if the same diameter drill is used for drilling on both sides, it is easy to form an "8" hole. In order to solve this problem, a method usually used at present is to increase The diameters of the holes drilled on the front and back sides are different, but due to the thickness of the plate, the drill bit is eas

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  • PCB plate double-face drilling and positioning method

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[0009] As shown in Figure 1, the present invention provides a double-sided drilling positioning method for a PCB board. The PCB board 1 is provided with at least four positioning holes 10, and the drilling fixture corresponds to the positioning holes one-to-one. There are positioning pins, and when drilling holes from the front and back sides of the PCB board, the positioning pins and the positioning holes are matched in a one-to-one correspondence to locate the PCB board. The positioning holes are symmetrically distributed. According to the size of the PCB board, the number of positioning holes is generally 4-16, preferably 4-6. In the embodiment shown in FIG. 1, the circuit board is provided with 4 positioning holes symmetrically; and in another embodiment shown in FIG. 2, the circuit board is provided with 6 symmetrical positioning holes.

[0010] The present invention increases the number of positioning holes through the coordination of positioning holes and positioning pins c...

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Abstract

The PCB dual surface drilling positioning has at least four positioning holes on the board, positioning pins on the drilling fixture or drilling platform opposite to the positioning holes, with the positioning pins and the holes matching with each other to fix the PCB board when it drills from either positive or negative side of the board.It can use the interference principle of positioning, reduce the deviation of two positioning zero points, with high positioning precision, and increased in drilling efficiency and yield rate.

Description

technical field [0001] The invention relates to a PCB board drilling method, in particular to a PCB board double-sided drilling positioning method. Background technique [0002] Front and back drilling refers to the process of drilling through holes on both sides of the front and back when the plate is thick and cannot be drilled at one time or the quality of one-time drilling cannot be guaranteed. It is generally used to process small holes with a diameter D≤1.0mm, most of which have a diameter of 0.6-0.8mm. When using this drilling method, when the thickness and diameter of the plate is relatively large, if the same diameter drill is used for drilling on both sides, it is easy to form an "8" hole. In order to solve this problem, a method usually used at present is to increase The diameters of holes drilled on the front and back sides are different, but due to the thickness of the plate, the drill bit is easy to break after increasing to a certain extent, and this problem ...

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Application Information

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IPC IPC(8): B23B47/00B23Q3/18
Inventor 武凤伍彭勤卫梁飞
Owner SHENNAN CIRCUITS
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