3D Scanned Component Alignment Using FEM-Guided Straightening
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Solution Overview
Problem
Existing methods for straightening plastically deformable metallic components are time-consuming and require multiple deformation and test cycles due to reliance on manual corrections and extensive use of equipment, such as force and displacement sensors.
Innovation Solution
The method involves creating a 3D target model and a finite element model (FEM) to determine precise force application positions, using scanning to record actual component geometry, and iteratively applying forces based on FEM simulations, with data optimization by an algorithm to reduce cycles and improve precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual correction methods with force and displacement sensors are used, then measurement precision is improved, but productivity deteriorates due to 8-15 deformation cycles
Solution Approach 1:
The patent applies preliminary action by creating a complete FEM model before the straightening process to pre-calculate all deformation forces and positions. This allows the system to plan the entire straightening sequence in advance, eliminating the need for multiple iterative cycles and significantly improving productivity while maintaining measurement precision through the FEM-based prediction model.
2Manufacturing precision
If multiple deformation and test cycles are performed, then manufacturing precision is improved, but loss of time increases due to repeated measurements and corrections
Solution Approach 1:
The patent replaces the traditional mechanical iterative correction system with a computer-based FEM simulation system. The FEM model calculates the exact deformation forces and positions needed to achieve the target shape, substituting multiple physical measurement-and-correction cycles with a single computational process, thereby reducing time loss while maintaining manufacturing precision.
3Reliability
If force and displacement sensors are used for real-time monitoring, then reliability of shape control is improved, but device complexity increases
Solution Approach 1:
The patent creates a virtual copy of the physical component through FEM simulation. This digital model replicates the component's behavior under deformation, allowing the system to predict and control shape changes without requiring complex physical sensor systems. The FEM model serves as a virtual twin that replaces the need for multiple physical sensors, reducing device complexity while maintaining control 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 significantly reduces the number of deformation cycles required, potentially to three to six, by using FEM models and self-learning algorithms to achieve accurate alignment with the target model, thereby shortening the straightening process.
Implementation Method 1
designing a finite element model (FEM model) of the target model of the component. The FEM model can simulate the behavior of the component under the influence of forces.
Implementation Method 2
detecting the 3-dimensional geometry of the deformed actual component; preferably by scanning
Data Source
Figure 1
AI summary
Method for straightening the shape of a plastically deformable component, preferably made of a metallic material: • Creating a 3-dimensional target model of the component; • Designing a finite element model (FEM model) of the target model of the component; • Capturing the 3-dimensional geometry of the deformed actual component, preferably by scanning; • Determining the deviation of the actual component from the target model; • Deforming by applying forces at calculated positions on the component; • Checking and comparing the actual component after the deformation process with the target model, whereby the forces applied for deformation and the calculated positions for introducing the forces on the component are determined based on the FEM model.