Dual-Axis Laser Beam Scanning for Moving Workpiece Precision
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Solution Overview
Problem
Existing laser machining systems face challenges in achieving flexible and high-quality machining of workpieces due to relative movement between the material web and the optical arrangement, which affects the precision and efficiency of the machining process.
Innovation Solution
A laser machining system with separate long-axis and short-axis scanner components synchronized by a control device, allowing independent scanning movements to compensate for relative movement and improve machining quality and flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a single scanner is used to compensate for relative movement between material web and optical arrangement, then the system structure is simple, but the machining precision and flexibility are limited
Solution Approach 1:
The single scanner is divided into two independent scanners: a first scanner for scanning the beam path in a first direction and a second scanner for scanning the beam path in a second direction perpendicular to the first direction. This segmentation allows each scanner to independently control beam movement in its respective direction, enabling precise compensation for relative movement between the material web and optical arrangement, thereby improving machining precision without requiring a completely new system architecture.
Solution Approach 2:
The two scanners are configured to move independently and dynamically adjust the beam path in perpendicular directions. The first scanner adjusts the beam position in the first direction while the second scanner adjusts it in the second direction, allowing real-time dynamic compensation for relative movement during machining, which enhances both precision and flexibility.
2Adaptability or versatility
If the beam path is scanned in multiple directions with synchronized control, then the adaptability and machining quality are improved, but the control system complexity increases
Solution Approach 1:
The control of beam scanning is segmented into two independent control systems: one for the first scanner controlling movement in the first direction, and another for the second scanner controlling movement in the second direction. This segmentation allows each scanner to be controlled independently according to different machining requirements, enhancing adaptability while keeping each control module relatively simple.
Solution Approach 2:
The dual-scanner configuration provides multi-functionality by enabling independent scanning in perpendicular directions. The system can perform various machining operations by coordinating the two scanners differently: one scanner can compensate for web movement while the other performs the actual machining scan, or both can work together for complex two-dimensional patterns, greatly enhancing machining flexibility.
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 system provides enhanced flexibility and improved machining quality by precisely aligning the beam cross-section with the workpiece, compensating for relative movement, and ensuring consistent machining results.
Implementation Method 1
a laser radiation source for generating an input laser beam
Implementation Method 2
a long-axis focusing optical unit for focusing a beam path within the optical arrangement between the input laser beam and the output laser beam along the long axis
Data Source
AI summary
A laser machining system includes a laser radiation source for generating an input laser beam, and an optical arrangement for converting the input laser beam into an output laser beam for machining a workpiece. The optical arrangement includes a long-axis focusing optical unit for focusing a beam path along a long axis, a long-axis scanner for scanning the beam path with a long-axis scan direction component, a short-axis focusing optical unit for focusing the beam path along a short axis, and a short-axis scanner for scanning the beam path with at least one short-axis scan direction component. The laser machining system further includes an advancement device for advancing the workpiece relative to the optical arrangement, and a control device configured to synchronize the scanning of the beam path along the long-axis scan direction component with the scanning of the beam path along the short-axis scan direction component.