Sheet Metal Hole Cutting Paths to Minimize Dividing Marks
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Solution Overview
Problem
Conventional laser processing methods for sheet metal cutting result in poor processing quality due to the presence of numerous dividing marks on the cut surface, especially when forming holes, which can lead to defects and interference with the processing head.
Innovation Solution
A laser processing method that involves irradiating the sheet metal with a laser beam along specific cutting paths, including straight lines and circular arcs, to form holes with minimal dividing marks, using a control device to control the laser processing machine to create cutting lines and dividing lines that minimize scrap interference and improve surface quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the hole formation area is divided into a plurality of small scraps to prevent scrap from rising and interfering with the processing head, then the reliability of processing is improved, but the manufacturing precision deteriorates due to the formation of numerous dividing marks on the cut surface
Solution Approach 1:
The patent applies segmentation by dividing the hole formation area into multiple small scraps through strategically positioned dividing lines. This segmentation prevents large scraps from rising and interfering with the processing head, thereby improving processing reliability while managing the trade-off with surface quality through optimized division patterns
Solution Approach 2:
The patent applies local quality by positioning dividing lines at specific locations where they are least visible or least impactful on the final product appearance. The dividing lines are strategically placed to minimize their effect on cut surface quality while still achieving the functional goal of preventing scrap interference
2Productivity
If conventional processing programs are used to automatically layout cutting paths, then the productivity is improved through automated processing, but the manufacturing precision deteriorates due to the formation of many dividing marks on the cut surface
Solution Approach 1:
The patent applies preliminary action by pre-planning and optimizing the layout of cutting paths and dividing lines before actual processing begins. The processing program is designed in advance to automatically position dividing lines in optimal locations that minimize their impact on surface quality while maintaining automated processing efficiency
Solution Approach 2:
The patent applies dynamics by making the cutting path layout adaptive and flexible. The processing program can dynamically adjust the positioning of dividing lines based on the specific geometry of the hole formation area, allowing automated processing to achieve better surface quality through intelligent path optimization
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
The method achieves good processing quality with fewer dividing marks on the cut surface, reducing the risk of processing defects and ensuring smooth operation of the processing head, even for larger holes.
Implementation Method 1
performing irradiation with a laser beam along a first cutting path set on a first straight line in a first direction that connects a first point and a second point on a sheet metal and continuously cutting the first cutting path to form a first cutting line on the sheet metal
Data Source
AI summary
A first cutting line is formed in a sheet metal by continuously cutting a first cutting path. A second cutting line is formed in the sheet metal by continuously cutting a second cutting path. The sheet metal is cut along a plurality of third cutting paths with a plurality of positions on the first cutting line as cutting start points and intermediate positions between the first cutting line and the second cutting line as cutting end points to form a plurality of first dividing lines. The sheet metal is cut along a plurality of fourth cutting paths with a plurality of positions on the second cutting line as cutting start points and the intermediate positions as cutting end points to form a plurality of second dividing lines.