Drilling method for achieving PCB high hole-site precision

A technology of PCB board and drilling method, which is applied in the field of PCB manufacturing, can solve the problems of high input cost, limited improvement effect, unfavorable promotion and application, etc.

Active Publication Date: 2014-05-14
GUANGZHOU FASTPRINT CIRCUIT TECH +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, most PCB manufacturers use high-precision drilling machines, special drills, special backing plates, and front and back drilling to meet the technical requirements of

Method used

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  • Drilling method for achieving PCB high hole-site precision
  • Drilling method for achieving PCB high hole-site precision
  • Drilling method for achieving PCB high hole-site precision

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Embodiment Construction

[0026] Embodiments of the present invention are described in detail below in conjunction with accompanying drawings:

[0027] refer to Figure 1 to Figure 4 , a drilling method for realizing high hole position accuracy of a PCB, comprising the steps of:

[0028] Step 1, fix the PCB board on the workbench;

[0029] Step 2, use a short-edged drill to pre-drill the PCB board to be drilled;

[0030] Step 3, using a long-edged drill bit to perform deep drilling on the position to be drilled after step 2.

[0031] The drilling method for realizing the high hole position accuracy of the PCB board described in this embodiment is to fix the PCB board through step 1, so as to avoid the movement of the PCB board during the drilling process and affect the drilling accuracy; The drill position is pre-drilled, so that the PCB board is to be drilled to drill a shallow hole first. Since the short-blade drill is more rigid than the long-blade drill, it is not easy to slip when it touches th...

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Abstract

The invention discloses a drilling method for achieving PCB high hole-site precision. The method comprises the following steps that firstly, a PCB is fixed on a workbench, secondly, the position to be drilled on the PCB is pre-drilled through a short-blade drilling tool, and thirdly, the position, to be drilled, processed in the second step is deep drilled through a long-blade drilling tool. The operation is easy and convenient and cost is low. The PCB is fixed in the first step, so that the PCB does not move during the drilling process, and the drilling precision cannot be affected. The position to be drilled on the PCB is pre-drilled through the short-blade drilling tool in the second step, and the rigidity of the short-blade drilling tool is better relative to the long-blade drilling tool, so that in the moment that the short-blade drilling tool makes contact with a PCB surface, the short-blade drilling tool is not prone to sliding. The position, to be drilled, processed in the second step is deep drilled through the long-blade drilling tool, the lateral sliding of the long-blade drilling tool during the drilling process is reduced, and therefore the drilling alignment of the long-blade drilling tool during the deep drilling process is guaranteed, and the drilled hole site can meet the requirement for the PCB high hole-site precision.

Description

technical field [0001] The invention relates to PCB manufacturing technology, in particular to a drilling method for realizing high hole position accuracy of a PCB board. Background technique [0002] With the development of the electronics industry, printed circuit boards are also developing in the direction of thick boards, small holes, and dense wiring. Therefore, the production process capabilities of printed boards also need to be continuously improved to adapt to technological development trends. The hole position accuracy is one of the most important technological capabilities, which directly affects the application of new technology products such as BGA miniaturization, high thickness-to-diameter ratio, high-layer, and small pitch. At present, most PCB manufacturers adopt measures such as high-precision drilling machines, special drills, special backing plates, and front and back drilling to meet the technical requirements of high hole position accuracy. However, the...

Claims

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Application Information

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IPC IPC(8): B26F1/16
CPCH05K3/0047B23B35/00B23B41/02B23B41/14B23B41/16B23B2220/445H05K13/0015H05K2203/0207
Inventor 任小浪谢文蛟陈蓓曾志军
Owner GUANGZHOU FASTPRINT CIRCUIT TECH
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