3D Object Slice Transformation for Additive Manufacturing Accuracy
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Solution Overview
Problem
Additive manufacturing systems often introduce geometrical distortions during the generation of three-dimensional objects, leading to inaccuracies such as edge and surface distortions, which can result in a final product that does not faithfully reproduce the original object model.
Innovation Solution
An object processor that performs a series of transformations on the object model data, taking into account the characteristics of the additive manufacturing system, to generate slice data that compensates for potential distortions and includes modules for geometrical transformations, sacrificial structure generation, and virtual object creation to ensure accurate reproduction of the original object model.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If additive manufacturing systems generate objects layer-by-layer, then three-dimensional objects can be produced conveniently, but geometrical distortions such as edge and surface distortions are introduced
Solution Approach 1:
The patent applies preliminary action by performing geometrical transformations on the digital object model before the additive manufacturing process. The system calculates compensation values for expected distortions and pre-adjusts the model geometry, so that when the object is manufactured layer-by-layer, the final product achieves the desired geometrical accuracy despite the inherent distortions of the additive process
Solution Approach 2:
The patent implements preliminary anti-action by introducing compensatory geometrical transformations that counteract the anticipated harmful distortions. The system predicts the direction and magnitude of edge and surface distortions, then applies opposite transformations to the digital model to neutralize these effects during manufacturing
2Manufacturing precision
If the digital representation is processed to compensate for distortions, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The patent introduces an intermediary processing system that acts as a mediator between the original digital model and the additive manufacturing system. This object processor applies geometrical transformations through intermediate digital representations, providing a systematic way to compensate for distortions without requiring complex modifications to the base additive manufacturing hardware
Solution Approach 2:
The patent uses copying by creating transformed digital copies of the original object model with pre-compensated geometries. Instead of modifying the physical manufacturing process, the system generates multiple transformed versions of the digital model, each incorporating compensation for specific distortion types, and selects the appropriate transformed copy for manufacturing
Data Source
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AI summary
According to one example, there in provided a system for processing three- dimensional object data representing a three-dimensional object to be generated by an additive manufacturing system. The system comprises a processor to perform a transformation on the three-dimensional object data, and to generate a plurality of slice images from the transformed three dimensional object data.