Multi-Beam Laser Tool Control for Thermal Impact Reduction
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Solution Overview
Problem
Existing laser processing systems lack the capability to simultaneously emit multiple types of laser beams with different emission conditions at specific processing locations, leading to inefficiencies in processing quality and rate due to inadequate control over laser beam intensities and timing.
Innovation Solution
A laser processing system with a control device that executes multiple laser emission instructions for a laser-light-emitting tool attached to a robot, allowing simultaneous emission of different laser beams with adjustable intensities and emission time periods, and incorporating a teaching control panel for operators to set and manage these conditions within a single operation program.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a single laser beam is emitted at a time with sequential control, then the control system remains simple, but the processing quality and rate are insufficient due to inadequate control over laser beam intensities and timing
Solution Approach 1:
The patent divides the laser processing into multiple independent laser beams (first laser beam and second laser beam), each with separate emission control. This segmentation allows independent optimization of each beam's intensity and timing, improving processing quality while maintaining manageable control through modular instruction execution
Solution Approach 2:
The control device dynamically adjusts the emission conditions (intensity, timing, duration) of multiple laser beams based on processing requirements. The system can vary parameters such as emission intensity ratios, time intervals, and sequence arrangements to optimize processing outcomes without requiring complete system redesign
2Productivity
If multiple laser beams are emitted simultaneously with independent control, then processing quality and rate improve, but the control program complexity increases
Solution Approach 1:
The patent combines multiple laser emission instructions into a single integrated operation program. The control device executes first and second laser emission instructions that coordinate the emission of multiple laser beams simultaneously or sequentially, allowing complex multi-beam processing to be managed through unified program control rather than separate control systems
Solution Approach 2:
The control device is designed to handle multiple types of laser emission instructions through a universal control mechanism. It can interpret and execute various instruction formats (simultaneous emission, sequential emission, interval-based emission) using the same basic control architecture, reducing program complexity while maintaining flexibility
3Productivity
If laser beam intensity is increased to improve processing rate, then productivity increases, but thermal energy impact on the workpiece increases causing bead width increase and sputtering
Solution Approach 1:
The patent applies different intensity levels to different laser beams locally. The first laser beam can be emitted at a higher intensity for rapid material removal, while the second laser beam is emitted at a lower intensity to control thermal effects. This local differentiation of quality allows high processing rates without excessive thermal damage at any single location
Solution Approach 2:
The system uses periodic or alternating emission of multiple laser beams with controlled time intervals. By emitting laser beams in sequences with appropriate timing, the system allows thermal diffusion between pulses, reducing cumulative thermal energy impact while maintaining high average processing rates through efficient use of laser energy
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 solution enables improved processing quality and increased processing rate by regulating laser beam intensities and reducing thermal energy impact on the workpiece, preventing bead width increase and sputtering, while simplifying the teaching process and ensuring accurate execution of laser commands.
Implementation Method 1
a laser-light-emitting tool that is capable of emitting two or more different types of laser beams independently of each other
Data Source
AI summary
A laser processing system including a robot, a laser-light-emitting tool mounted on the robot, and a control device that controls the robot and the laser-light-emitting tool on the basis of an operation program, the laser-light-emitting tool being capable of emitting two or more different types of laser light independently from each other, and the control device being capable of issuing a plurality of laser emission instructions for causing the laser-light-emitting tool to simultaneously emit different types of laser light by using one laser processing command within the operation program.