Robot Laser Machining with Attribute-Based Path Segmentation
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Solution Overview
Problem
Existing laser machining methods face challenges in maintaining consistent machining quality when dealing with workpieces of varying thickness or attributes, as uniform laser output can lead to issues like lack of penetration or burn-through.
Innovation Solution
A laser machining method that obtains attribute information about the workpiece, divides the radiation locus into specific areas based on this information, and adjusts the laser locus velocity and output in each area to match the workpiece's attributes, ensuring consistent machining quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If uniform laser output is used for machining, then the machining process is simple and fast, but machining quality becomes inconsistent when workpiece attributes vary
Solution Approach 1:
The patent applies local quality by adjusting laser parameters (output and locus velocity) according to the specific attributes of different workpiece areas. The control device modifies laser characteristics based on detected attribute information, ensuring each region receives appropriate machining parameters matched to its local properties, thereby maintaining consistent quality across varying workpiece thicknesses or materials.
Solution Approach 2:
The patent implements dynamics by making laser parameters variable rather than fixed. The system dynamically adjusts laser output and locus velocity in real-time based on detected workpiece attributes, allowing the machining process to adapt to changing conditions throughout the workpiece, resolving the contradiction between speed and quality consistency.
2Manufacturing precision
If laser parameters are adjusted according to workpiece attributes, then machining quality consistency is maintained, but the machining process becomes more complex
Solution Approach 1:
The patent employs feedback by using a detection device to obtain attribute information about the workpiece, which is then fed back to the control device. This feedback loop enables automatic adjustment of laser parameters based on actual workpiece conditions, maintaining quality consistency without requiring complex manual intervention or overly complicated machining processes.
Solution Approach 2:
The system applies self-service by enabling the machining process to automatically adapt to workpiece variations through automated detection and control. The control device autonomously adjusts laser parameters based on detected attributes, eliminating the need for complex external control systems or manual parameter changes, thereby reducing overall process complexity while maintaining precision.
3Reliability
If laser output is increased to prevent lack of penetration, then penetration is improved, but burn-through may occur in thinner areas
Solution Approach 1:
The patent applies local quality by tailoring laser output to the specific thickness or material properties of each workpiece area. Thicker or harder-to-penetrate regions receive higher laser output, while thinner areas receive reduced output, preventing burn-through. This localized parameter adjustment ensures reliable penetration without causing harmful effects in different regions.
Solution Approach 2:
The patent implements parameter changes by dynamically modifying laser output and locus velocity based on detected workpiece attributes. The system changes laser parameters in real-time according to the specific conditions of each machining area, allowing optimal penetration in thick regions while avoiding excessive energy input in thin regions, thus preventing burn-through while maintaining penetration reliability.
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 maintains consistent machining quality by adapting the laser parameters to the workpiece's varying attributes, preventing issues like lack of penetration or burn-through and ensuring precise control over the machining process.
Implementation Method 1
a head configured to variably make the radiation locus on the workpiece using the laser
Implementation Method 2
radiation locus on the workpiece using the laser
Data Source
AI summary
A laser machining method includes obtaining attribute information indicating a distribution of an attribute of a workpiece in a machined area of the workpiece, dividing a shape of a radiation locus into divided areas, and adjusting, based on the attribute information and in each of the divided areas, at least one of a locus velocity of a laser from a head configured to variably make the radiation locus on the workpiece using the laser, and an output of the laser from the head. The head is moved by a robot configured to move the head.