3D Print Model Compensation for Acute-Angle Distortion
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Solution Overview
Problem
Additive manufacturing processes often result in distortions during the formation of components, leading to final models that do not accurately represent the original design due to geometric inaccuracies.
Innovation Solution
A method of compensating the geometry of the original model using software to create a compensated model, which is then used for printing, ensuring the final model closely resembles the original by minimizing or eliminating distortions through the use of negative print regions that adjust for potential distortions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If additive manufacturing is used to form components, then manufacturing flexibility and complexity capability are improved, but geometric accuracy and dimensional precision deteriorate due to distortions during the forming process
Solution Approach 1:
The patent applies preliminary action by pre-compensating the digital model before manufacturing. The system identifies features prone to distortion (overhangs, acute angles, thin walls) and modifies the model geometry in advance to counteract expected printing errors, so that the final printed part achieves the desired geometric accuracy despite the additive manufacturing process limitations
Solution Approach 2:
The patent implements preliminary anti-action by introducing negative compensation features in the digital model that counterbalance the positive distortions expected during printing. For example, acute angles are rounded inward in the model to compensate for the printer's tendency to create sharper angles, and overhangs are modified to account for expected sagging or deformation during the printing process
2Productivity
If the original model is printed directly without compensation, then manufacturing time is reduced, but the final model deviates from the original design due to printer-induced distortions
Solution Approach 1:
The system performs automatic model compensation before printing by analyzing the digital model for features prone to distortion and applying corrective modifications. This preliminary processing step ensures that the printed part accurately represents the original design without requiring manual intervention or post-processing adjustments
Solution Approach 2:
The patent incorporates feedback mechanisms where the system learns from printing results and refines compensation strategies. By analyzing deviations between intended and actual printed geometries, the system adjusts compensation parameters to improve accuracy while maintaining efficient manufacturing timelines
3Manufacturing precision
If compensation features are added to the model to correct distortions, then geometric accuracy is improved, but model complexity and processing time increase
Solution Approach 1:
The patent applies local quality by targeting compensation only to specific features and regions of the model that are prone to distortion, rather than uniformly modifying the entire model. The system identifies problem areas such as overhangs, acute angles, and thin walls and applies localized geometric modifications only where needed, preserving the simplicity of other model regions
Data Source
AI summary
A method of forming a component that includes identifying an acute angle in an original model that is a virtual model of the component. The acute angle is defined by a first surface and a second surface. The method includes compensating the original model at the acute angle to create a compensated acute angle in a compensated model. The method also includes forming, by additive manufacturing, the component based upon the compensated model, where the formed component is more alike the original model than the compensated model.