Laser Processing Method for PCB Hole Drilling Speed and Accuracy
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Solution Overview
Problem
Existing laser processing methods for making holes in workpieces, such as printed-circuit boards, face challenges in accelerating processing speed while maintaining accuracy, particularly when dealing with areas of varying hole densities, as they require frequent changes in table speed and movement, leading to potential halts and reduced precision.
Innovation Solution
A laser processing method that combines synchronization and stationary processing by dividing the processing area into sections with specific attributes for each, where synchronization processing is performed in high-density areas and stationary processing in low-density areas, optimizing the order and movement of the table to maintain speed and accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If synchronization processing is performed in areas with extremely low hole density, then processing speed is accelerated, but the table cannot be moved within the time period for laser scanning, necessitating halts that slow down overall processing
Solution Approach 1:
The patent applies local quality by differentiating processing methods based on local hole density characteristics. Areas with low hole density are processed using stationary processing instead of synchronization processing, allowing the table to move at high speed without halting. This local adaptation resolves the contradiction by matching the processing method to the specific characteristics of each area, enabling continuous high-speed table movement while maintaining efficient processing.
2Productivity
If the table speed is increased to accelerate processing, then productivity improves, but the change in table speed increases, making it difficult to maintain finishing accuracy
Solution Approach 1:
The patent applies local quality by assigning stationary processing to areas with low hole density, which allows the table to maintain high speed without frequent acceleration and deceleration cycles. This reduces the overall change in table speed and helps maintain finishing accuracy while improving productivity.
Solution Approach 2:
The patent applies dynamics by dynamically selecting the processing method (synchronization or stationary) based on the local hole density of each area. This dynamic selection allows the system to optimize table speed profiles for different areas, reducing unnecessary speed changes and maintaining finishing accuracy while maximizing productivity.
3Manufacturing precision
If stationary processing is performed in areas with high hole density, then processing accuracy is maintained, but the table must move over long distances, increasing speed changes and reducing productivity
Solution Approach 1:
The patent applies local quality by performing stationary processing specifically in areas with low hole density and synchronization processing in areas with high hole density. This local differentiation allows the table to move efficiently through high-density areas using synchronization processing, reducing unnecessary long-distance movements and speed changes, thereby improving productivity while maintaining accuracy where needed.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach accelerates the overall processing speed while maintaining the accuracy of hole finishing by allowing for efficient movement between sections and optimizing the processing order to minimize changes in table speed, thus addressing the limitations of previous methods.
Implementation Method 1
laser scanning is performed on a workpiece mounted on a table
Data Source
AI summary
The object of the present invention is to achieve the combination processing that accelerates the processing speed while keeping the accuracy of finishing. In the combination processing consisting combination of stationary processing and synchronization processing, the processing of the section in the rows in an processing area is performed from a first end to a second end of a row, and then from the second end to the first end of the next row so that the processing is performed from side to side. The stationary processing is performed in sections having relatively low processing densities and the synchronization processing is performed in the other sections than the sections for the stationary processing.