Laser Processing Head Dynamic Path Correction
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Solution Overview
Problem
Existing laser processing systems face challenges in accurately and efficiently performing laser processing on moving workpieces due to misalignment between the laser processing head and the workpiece, leading to irregular weld lines and difficulty in high-speed operation along target paths.
Innovation Solution
A laser processing head and system that incorporate optical path changing members, drivers, and control units to adjust the laser beam's path based on real-time relative position information of the workpiece and target path data, ensuring precise alignment and correction of the laser beam along the intended processing path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the robot moves the laser processing head and supporting apparatus moves the workpiece independently along predetermined paths, then the system can perform laser processing on moving workpieces, but misalignment between the laser processing head and workpiece occurs leading to irregular weld lines
Solution Approach 1:
The control unit receives real-time information on the relative position between the laser processing head and workpiece, and uses this feedback to dynamically adjust the optical path changing member's posture or position, ensuring the laser beam remains aligned with the target path despite independent movements of the robot and supporting apparatus
Solution Approach 2:
The optical path changing member is made dynamically adjustable through the driver mechanism, allowing real-time modification of the laser beam's path in response to changing relative positions between the laser processing head and workpiece during the processing operation
2Adaptability or versatility
If the laser processing head is fixed to perform processing, then alignment is simple, but the system cannot accommodate moving workpieces or complex target paths
Solution Approach 1:
The optical path changing member is made dynamically adjustable through the driver mechanism, allowing real-time modification of the laser beam's path in response to changing relative positions between the laser processing head and workpiece during the processing operation
Solution Approach 2:
The optical path changing member serves multiple functions: it can adjust the laser beam path to accommodate different workpiece positions, compensate for alignment errors, and adapt to various target paths, making the laser processing head versatile for different processing scenarios
3Productivity
If high-speed laser processing is performed on moving workpieces, then productivity increases, but maintaining precise alignment along the target path becomes difficult
Solution Approach 1:
The control unit receives real-time information on the relative position between the laser processing head and workpiece, and uses this feedback to dynamically adjust the optical path changing member's posture or position, ensuring the laser beam remains aligned with the target path despite independent movements of the robot and supporting apparatus
Solution Approach 2:
The control unit calculates the required adjustment of the optical path changing member in advance based on predicted relative position changes, allowing the system to proactively compensate for alignment deviations before they occur, thereby maintaining precision during high-speed operation
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
Facilitates accurate and high-speed laser processing by correcting the irradiation position of the laser beam, improving weld quality and simplifying the setup process for various workpiece types, even when the robot and supporting apparatus operations are not perfectly aligned with the target path.
Implementation Method 1
at least one optical path changing member that reflects or refracts, toward the workpiece, the laser beam emitted from a predetermined laser beam output section
Implementation Method 2
at least one optical path changing member that reflects or refracts, toward the workpiece, the laser beam emitted from a predetermined laser beam output section
Data Source
AI summary
A laser processing head emits a laser beam to a workpiece that moves during laser processing and includes: optical path changing members that reflect, toward the workpiece, the laser beam emitted from a laser beam output section; a driver that changes posture of each of the optical path changing members; a control unit that controls the driver; and a memory device that stores target path information indicating a target path of the laser processing, in which the control unit receives information relating to a relative position of the workpiece with respect to the laser processing head, and controls the driver on the basis of the received information relating to the relative position and the target path information to perform the laser processing along the target path.