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A kind of pcb short slot hole drilling method

A drilling method and short slot hole technology, applied in the field of PCB manufacturing, can solve problems such as uneven force, improve production efficiency, avoid skew and insufficient length of slot holes, and reduce the number of formed holes

Active Publication Date: 2019-03-08
南阳鼎泰高科有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above-mentioned defects, the object of the present invention is to provide a method for drilling short slots in PCB, which can avoid uneven stress on both sides of the drill bit when drilling short slots [L<2D], and improve Insufficient length of short slot holes and skew phenomenon improve the good rate of PCB boards and reduce production costs

Method used

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  • A kind of pcb short slot hole drilling method
  • A kind of pcb short slot hole drilling method
  • A kind of pcb short slot hole drilling method

Examples

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Comparison scheme
Effect test

example 1

[0030] Halogen free part number

[0031] When the L Figure 4 As shown, when 0.75<L / 2D<0.9, the drilling coordinates rotate 5 degrees clockwise around the reference point, and if L / 2D ≤0.75, the drilling coordinates rotate 7 degrees clockwise around the reference point.

[0032] When 0.8

[0033] When 0.7

[0034] When L / 2D ≤0.7, the drilling coordinates rotate 12 degrees clockwise around the reference point.

[0035] The drilling method avoids uneven stress on both sides of the drill bit, improves the insufficient length and skew of the short slot hole, improves the good rate of the PCB board, and reduces the production cost.

example 2

[0037] Non-Halogen Free Part No.

[0038] When the L Figure 5 As shown, when 0.75

[0039] When 0.7

[0040] When L / 2D ≤0.7, the drilling coordinates rotate 10 degrees clockwise around the reference point.

[0041] The drilling method avoids uneven stress on both sides of the drill bit, improves the insufficient length and skew of the short slot hole, improves the good rate of the PCB board, and reduces the production cost.

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PUM

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Abstract

The invention discloses a drilling method for a short slot of a PCB. The driving method is characterized in that in a drilling process of the short slot of the PCB, the slot is drilled by way of rotating the coordinates of the short slot. The coordinate rotating method comprises the step of rotating the short slot anticlockwise or clockwise by taking a previous coordinate point as a reference point; for the short slot, L is less than 2D and D is less than 51.9mil, wherein L represents the length of the short slot and D represents the diameter of a drill. The drilling method can avoid the condition that two sides of a drill bit are unevenly stressed, insufficient length of the short slot and deflection of the short slot are improved, the yield rate of PCB boards is improved, and the production cost is lowered.

Description

technical field [0001] The invention relates to the technical field of PCB manufacturing, in particular to a method for drilling short slot holes in a PCB. When the slot parameters are L<2D and D<51.9mil, it is a design method to solve the insufficient length and skew of such short slots. Background technique [0002] The electronics industry is developing rapidly towards miniaturization and multi-functionalization. The electronic circuit board manufacturing industry has to face such challenges. more and more. Moreover, the rapid development of the domestic circuit board industry in recent years has made the industry more and more competitive, reducing costs and improving production efficiency have long been urgent. However, when short slots [L<2D] are encountered in mechanical drilling, the slot pattern is generally made on the PCB board, and drills with a diameter of 1 / 2 of the short slot diameter are used to guide on both sides of the slot pattern length. On t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23B35/00H05K3/00
CPCB23B35/00H05K3/00
Inventor 王俊锋王雪峰谭芒飞
Owner 南阳鼎泰高科有限公司
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