Irradiation Device Calibration via Simulated Pattern Alignment
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Solution Overview
Problem
The calibration process for irradiation devices in additive manufacturing is cumbersome and time-consuming, requiring multiple steps to adjust parameters and prevent stitching errors, which can lead to deviations and inefficiencies in the irradiation of build material layers.
Innovation Solution
A method involving the generation of multiple calibration patterns at different positions using two energy beams, determining position information, and simulating changes in irradiation parameters to optimize calibration quality, reducing the number of calibration steps by iteratively adjusting parameters until a maximum or minimum calibration quality value is reached.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional multi-step calibration process is used, then calibration thoroughness is improved, but calibration time and complexity increase
Solution Approach 1:
The system performs preliminary simulation of calibration patterns before actual calibration execution. By simulating the calibration process virtually first, the system identifies optimal parameters and predicts calibration outcomes, reducing the need for multiple iterative physical calibration steps and thereby reducing calibration time while maintaining thoroughness
Solution Approach 2:
The system creates virtual copies of calibration patterns through simulation. Instead of repeatedly performing physical calibration steps, the system uses digital twins or virtual models to test and optimize calibration parameters, allowing thorough calibration assessment without the time penalty of multiple physical iterations
2Manufacturing precision
If multiple calibration steps are performed, then calibration accuracy is improved, but process complexity increases
Solution Approach 1:
The system combines simulation and calibration assessment into a single integrated process. By merging the virtual simulation step with the calibration evaluation, the system achieves accurate calibration assessment without requiring separate, complex multi-step procedures, thereby reducing process complexity while maintaining accuracy
Solution Approach 2:
The system replaces complex physical calibration mechanisms with computational simulation. Instead of relying on multiple physical adjustment steps and manual measurements, the system uses software-based simulation to model and assess calibration accuracy, simplifying the overall process while maintaining or improving precision
3Adaptability or versatility
If traditional calibration method is used, then parameter adjustment coverage is improved, but stitching error prevention efficiency decreases
Solution Approach 1:
The system implements feedback through simulation results. By simulating calibration patterns and analyzing the outcomes, the system automatically identifies parameter adjustments needed to prevent stitching errors, providing efficient targeted adjustments rather than exhaustive parameter coverage, thereby improving calibration efficiency while maintaining adaptability
Solution Approach 2:
The system performs preliminary simulation to identify which parameter adjustments will most effectively prevent stitching errors. This preliminary analysis allows the system to focus on critical parameters only, avoiding unnecessary adjustments and improving calibration efficiency while maintaining comprehensive coverage where needed
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 reduces the number of calibration steps and improves efficiency by directly optimizing the irradiation device's parameters, ensuring precise alignment and reducing stitching errors, thereby enhancing the overall manufacturing process.
Implementation Method 1
generating at least two first and two second calibration patterns, wherein the at least two first calibration patterns are generated in at least two different first positions via the first energy beam and the at least two second calibration patterns are generated in at least two different second positions via the second energy beam
Data Source
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AI summary
Methods for calibrating an irradiation device for an apparatus for additively manufacturing three-dimensional objects include generating at least two first and two second calibration patterns, in at least two different first positions and at least two different second positions; determining position information relating to the positions of the calibration patterns; generating a calibration quality value relating to a calibration status of the irradiation device; simulating at least two first calibration patterns and at least two second calibration patterns based on at least one changed irradiation parameter; determining a calibration quality value for the simulated calibration patterns; and repeating the simulation and determination of the calibration quality value until a maximum or minimum calibration quality value is reached.