3D Printing Auxiliary Structure Points for Force Compensation
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Solution Overview
Problem
Existing methods for determining auxiliary structure points in 3D printing are time-consuming and error-prone, often leading to deformation or breakage of printed objects due to inadequate support during the manufacturing process, particularly caused by thermal stresses and adhesive forces.
Innovation Solution
A slice-based approach is used to calculate forces acting on each layer of a 3D model, identifying areas that require additional auxiliary structure points by comparing momentum values caused by printing forces and holding forces, ensuring sufficient support to prevent deformation and breakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing methods are used to determine auxiliary structure points, then the printing process can proceed, but the method is time-consuming and error-prone leading to deformation or breakage
Solution Approach 1:
The patent segments the 3D model into multiple layers and processes each layer independently to determine auxiliary structure points. This segmentation allows for efficient calculation by focusing on local force balances rather than analyzing the entire model at once, thereby reducing processing time while maintaining accuracy in identifying support points needed to prevent deformation and breakage.
Solution Approach 2:
The patent performs preliminary calculation of forces and momentum for each layer before the actual printing process. By pre-determining the auxiliary structure points needed to compensate for thermal stresses and adhesive forces, the system avoids time-consuming adjustments during printing and ensures reliability from the start.
2Productivity
If insufficient auxiliary structures are added, then the printing process is faster, but deformation and breakage occur due to thermal stresses and adhesive forces
Solution Approach 1:
The patent applies local quality by determining auxiliary structure points based on the specific force conditions of each layer. Instead of uniformly adding support structures throughout the model, the system calculates and places auxiliary points only where needed to compensate for local thermal stresses and adhesive forces, thus maintaining printing speed while ensuring manufacturing precision in critical areas.
Solution Approach 2:
The patent changes the parameter of auxiliary structure placement from fixed or uniform to dynamically calculated based on force analysis. By adjusting the position and number of auxiliary structure points according to the momentum and force calculations for each layer, the system optimizes the balance between printing speed and model accuracy.
3Reliability
If existing support generation methods are used, then some support is provided, but they are inadequate and error-prone in various use cases
Solution Approach 1:
The patent replaces traditional mechanical or heuristic support generation methods with a physics-based calculation system. By using force and momentum calculations to determine auxiliary structure points, the system provides more reliable and accurate support determination across various use cases, overcoming the limitations of existing methods while managing complexity through systematic computation.
Data Source
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AI summary
Systems and methods for generating auxiliary structure points to 3D print models are disclosed. The auxiliary structure points may be used to add auxiliary structures to 3D models which compensate for forces acting upon or within the model during the 3D printing process to ensure a successful build process.