Laser Projection Alignment for Precise Workpiece Processing
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Solution Overview
Problem
Current laser processing technologies face challenges in achieving high accuracy due to the lack of proper calibration and positioning of the element to be processed relative to the target position on the workpiece, leading to deviations in text or patterns and low processing precision.
Innovation Solution
A method and device for laser processing that involves determining the alignment of the element to be processed with the workpiece by comparing the position of a projection image in the processing area to the target processing position, and adjusting the positions of either the workpiece or the element as needed to achieve alignment before processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If laser processing is performed without calibration and positioning, then processing speed is maintained, but processing accuracy deteriorates due to deviation from target position
Solution Approach 1:
The patent projects the element to be processed onto the workpiece before actual laser processing to enable preliminary positioning and alignment. This preliminary action allows operators to adjust the workpiece or processing parameters to ensure the projected element aligns with the target position, thereby improving processing accuracy without requiring complex real-time calibration systems during the actual processing
Solution Approach 2:
The patent creates a visual copy of the element to be processed by projecting its image onto the workpiece surface. This projection serves as a template or guide that replicates the position, size, and shape of the element, allowing operators to verify alignment with the target position before processing. The projection acts as a simplified intermediary that eliminates the need for complex measurement and positioning instruments
2Manufacturing precision
If alignment calibration is performed before processing, then processing accuracy is improved, but processing time increases due to additional calibration steps
Solution Approach 1:
The projection of the element onto the workpiece is performed quickly as a preliminary step before processing. Since this is a optical projection rather than a physical measurement process, it can be executed rapidly without significantly extending the overall processing time, while still providing the necessary alignment information to ensure accurate processing
Solution Approach 2:
The projection system provides self-aligning capabilities where the projected element automatically indicates its position relative to the workpiece features. Operators can directly observe the alignment status through the projection and make intuitive adjustments, eliminating the need for complex calibration procedures or specialized operator training, thereby maintaining high processing efficiency
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 significantly improves the processing accuracy by ensuring precise alignment of the element and the workpiece, thereby enhancing the quality of the processed workpiece.
Implementation Method 1
projecting an image of the element to be processed or a projection image corresponding to a calibration feature of the element to be processed onto the workpiece to be processed
Data Source
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AI summary
A laser processing method and apparatus, an electronic device, and a storage medium. The method comprises: before an element to be processed is processed into an object to be processed, according to a relation between a position of a projection image in a processing area and a target processing position of said object, determining whether said element is aligned with said object, the projection image comprising a projection image corresponding to at least part of said element or a projection image corresponding to a calibration feature of said element; and, when it is detected that said element and said object are not aligned, aligning and calibrating said element and said object by means of adjusting the positions of said element and/or said object. Alignment and calibration before processing improve the processing precision.