3D Modeling Apparatus Convex-Concave Layer Segmentation
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Solution Overview
Problem
Existing three-dimensional modeling techniques face challenges in maintaining dimensional accuracy due to the fluid properties of materials used, leading to reduced surface flatness and modeling accuracy.
Innovation Solution
A three-dimensional modeling apparatus and method that involves forming convex and concave portions in a specific pattern during layer lamination, with controlled material deposition and curing to restrict material flow, ensuring spatial separation and enhanced surface smoothness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If material layers are formed by a material having fluid property, then the material can be easily deposited and shaped, but the material flows during lamination causing reduced modeling accuracy and surface flatness
Solution Approach 1:
The surface of the material layer is divided into convex portions and concave portions, creating a segmented structure that restricts material flow. This segmentation prevents continuous flow across the entire surface while allowing localized deposition in controlled regions.
Solution Approach 2:
Different regions of the material layer surface are given different properties through the convex-concave structure. Convex portions have elevated surfaces that contain material, while concave portions have recessed surfaces that collect excess material, creating local quality variations that control flow behavior.
2Productivity
If material is deposited continuously during lamination, then productivity is improved, but material flow causes surface flatness reduction
Solution Approach 1:
The convex and concave portions are formed on the material layer surface before subsequent material deposition. This preliminary structuring creates flow-restricting features in advance, ensuring that material deposited at high speed will be contained within defined regions rather than flowing uncontrollably.
3Shape
If convex portions are formed by laminating multiple material layers, then the three-dimensional structure is achieved, but the complexity of the lamination process increases
Solution Approach 1:
The lamination process alternates between depositing material on convex portions and filling concave portions in a periodic manner. This rhythmic deposition pattern simplifies control compared to continuous complex patterning, as the system repeatedly performs the same sequence of operations.
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 effectively suppresses material flow and enhances the modeling accuracy of three-dimensional objects by maintaining surface flatness and reducing the impact of fluid properties on layer formation.
Implementation Method 1
the modeling portion may form the material layer by removing at least a portion of a solvent included in the material
Implementation Method 2
the modeling portion may form the material layer by melting and curing a powder included in the material
Data Source
AI summary
A three-dimensional modeling apparatus includes a modeling portion that models a three-dimensional object by laminating material layers formed by a material having a fluid property, and executes a first modeling process that forms concave portions, which are adjacent to two or more convex portions and are recessed in comparison with the convex portions in a lamination direction in which material layers are laminated, as a result of forming a plurality of convex portions that project in the lamination direction, a second modeling process that laminates a material layer on the convex portions, and forms a material layer, which is spatially separated from the material layer laminated on the convex portions, inside the concave portions, and a third modeling process that fills the concave portions with a material layer by disposing the material on the material layer inside the concave portions.