3D Print Object Modeling With Halftone Control for Material Properties
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Solution Overview
Problem
Current additive manufacturing techniques face challenges in generating three-dimensional objects with specific properties such as conductivity, density, and appearance, as they often require complex control data and halftoning processes to achieve desired object attributes, which can be limiting in terms of material selection and halftone schemes available.
Innovation Solution
The method involves defining print material data and using halftoning techniques to determine the location and amount of print materials needed to achieve specified object properties, with the option to select from various halftone schemes and print apparatus settings, allowing for the generation of control data that can produce objects with varied properties like conductivity, density, and appearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If halftoning techniques are used to achieve desired object attributes, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The patent applies parameter changes by varying print material coverage percentages and utilizing different halftone schemes (error diffusion, ordered dithering, attributed dithering) to achieve desired object attributes. By changing the parameters of material distribution and halftoning algorithms, the system can precisely control properties like color, density, and conductivity without requiring complex hardware modifications.
2Adaptability or versatility
If multiple print materials are used to achieve varied object properties, then adaptability is improved, but loss of substance increases
Solution Approach 1:
The patent implements local quality by assigning different print materials to different regions or voxels of the three-dimensional object based on desired local properties. Each voxel can have customized material composition and coverage percentages, allowing precise control over local attributes like color, conductivity, or density while minimizing overall material waste through optimized distribution.
Solution Approach 2:
The system uses partial action by applying print materials at controlled coverage percentages rather than full coverage. By specifying that only certain percentages of voxels receive particular materials (e.g., 70% coverage of a conductive material), the system achieves the desired object properties with reduced material consumption compared to complete saturation.
3Manufacturing precision
If complex control data is generated to achieve specific object properties, then manufacturing precision is improved, but productivity decreases
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing halftone threshold matrices and print material coverage representations before actual object generation. These pre-computed data structures enable rapid conversion of three-dimensional data into control data during printing, reducing real-time computational burden and improving productivity while maintaining precise control over object properties.
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 enables the creation of three-dimensional objects with precise properties by determining the optimal placement and amount of print materials, reducing frustration and waste while fully utilizing the capabilities of the print apparatus, and allowing for the generation of objects with complex attributes like color, transparency, and mechanical properties.
Implementation Method 1
Energy may be applied to the layer and the build material to which an agent has been applied may coalesce and solidify upon cooling
Data Source
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AI summary
The application refers to a method for generating three-dimensional object models for an additive manufacturing process in a layer-by-layer manner, e.g. 3D-printing, and to generating control data for use by the print apparatus. The object models are generated from a geometric description and from object generation data, which comprise the print apparatus and attributes such as a halftone scheme, a print apparatus setting, an object structure and a print material coverage representation. The method is implemented in the form of a computer software product and generates data specific for each identifies printing device.