3D Object Layer Data Compression for Property-Accurate Printing
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Solution Overview
Problem
Current additive manufacturing techniques face challenges in efficiently processing and storing data for three-dimensional objects with varied properties, such as color, transparency, and mechanical properties, especially when the print apparatus capabilities are unspecified, leading to suboptimal material distribution and object quality.
Innovation Solution
The method involves an apparatus and process that characterizes three-dimensional space using sub-volumes (voxels) with specific properties, employing halftoning techniques to determine material volume coverage and generate control data for additive manufacturing, allowing for the precise deposition of print materials and properties across layers, even when the print apparatus capabilities are unknown.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If control data is generated from a three-dimensional representation with varied properties, then object quality and property precision are improved, but data processing complexity and storage requirements increase
Solution Approach 1:
The three-dimensional object data is divided into multiple layers, with each layer representing a cross-section at a specific height. This segmentation allows the complex 3D data to be processed and stored as a sequence of simpler 2D layers, reducing the overall processing complexity while maintaining property precision for each layer
Solution Approach 2:
The patent transforms the three-dimensional object representation into a two-dimensional layer-based structure by slicing the object at different heights. This dimensionality reduction simplifies the data structure and processing requirements while preserving the essential geometric and property information through the layer stack
2Productivity
If control data specifies precise material placement locations and amounts, then material distribution optimization is improved, but data storage requirements increase
Solution Approach 1:
The patent applies local quality by specifying material properties and placement parameters for each individual layer rather than treating the entire object uniformly. Each layer can have its own material composition, thickness, and deposition parameters, allowing optimized material distribution tailored to local requirements while managing data storage through hierarchical organization
3Manufacturing precision
If halftoning techniques are used to determine material volume coverage, then print material precision is improved, but processing time increases
Solution Approach 1:
The halftoning processing is performed in advance during the data preparation phase, converting the desired material volume coverage into discrete layer-by-layer deposition instructions before actual printing begins. This preliminary processing enables precise material volume control during printing without adding real-time processing delays to the manufacturing cycle
Data Source
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AI summary
A method is described in which data representing a three-dimensional object to be printed is obtained. The data comprises object property data indicative of properties of the three-dimensional object. Layers within the three-dimensional object to be printed are identified. The obtained data is processed by comparing object property data associated with an identified layer to object property data associated with a reference layer selected from the identified layers. Where a difference in object property data associated with an identified layer and object property data associated with a reference layer is determined, the determined difference is stored.