3D Powder Modeling with Variable Binder Density for Accuracy
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing 3D modeling methods face challenges in achieving accurate and strong 3D modeled objects due to uneven distribution of modeling solution density within the object, leading to accuracy and strength issues.
Innovation Solution
A method involving a 3D modeling apparatus that applies a modeling solution to powder layers such that the density inside the object is lower than on its surface, with alternating application areas to minimize empty spaces and ensure uniform strength, using a laminate modeling approach with controlled powder and solution distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the modeling solution is applied uniformly throughout the 3D modeled object, then the manufacturing process is simple, but the density distribution becomes uneven leading to accuracy and strength issues
Solution Approach 1:
The patent applies different densities of modeling solution to different regions of the 3D modeled object. Specifically, the inside region receives a modeling solution with a first density while the surface region receives a modeling solution with a second density that is different from the first. This local differentiation of solution density ensures that each region receives appropriate amounts of solution, preventing both excessive seepage in the inside and ensuring adequate hardening at the surface, thereby improving overall modeling accuracy without complicating the manufacturing process
2Strength
If the modeling solution density inside the object is increased, then the strength may improve, but the solution seeps out more leading to accuracy degradation
Solution Approach 1:
The patent addresses this contradiction by applying a modeling solution with a first density to the inside region and a modeling solution with a second density to the surface region. The inside region, which requires higher strength, receives a higher concentration modeling solution that provides both strength and prevents seepage. The surface region receives a different density solution that ensures proper hardening without excessive seepage. This localized differentiation allows each region to receive the appropriate solution density for its specific requirements
Solution Approach 2:
The patent applies modeling solution selectively to different regions rather than uniformly throughout. The inside region receives modeling solution with a specific density optimized for strength and seepage prevention, while the surface region receives modeling solution with a different density optimized for hardening. This partial application strategy ensures that each region receives the appropriate amount and concentration of solution without excessive seepage affecting overall accuracy
3Stability of the object's composition
If the modeling solution is applied densely throughout the object, then the hardening may be sufficient, but empty spaces are created reducing structural integrity
Solution Approach 1:
The patent applies modeling solution with different densities to different regions: the inside region receives a first density modeling solution while the surface region receives a second density modeling solution. This localized differentiation ensures that the inside region achieves sufficient hardening without creating excessive empty spaces, while the surface region receives appropriate solution density for its specific structural requirements, thereby maintaining overall structural integrity
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 method enhances the accuracy and strength of 3D modeled objects by reducing the seepage of the modeling solution and maintaining structural integrity, particularly in thin parts, while minimizing empty spaces and maintaining surface strength.
Implementation Method 1
hardening the powder to which the modeling solution applied to form modeling layers
Implementation Method 2
immersing the 3D modeled object modeled at the modeling in a removal solution to remove the powder to which the modeling solution is not applied
Data Source
AI summary
A method of manufacturing a 3D modeled object, includes modeling including applying a modeling solution to powder laid in layers, hardening the powder to which the modeling solution applied to form modeling layers, and sequentially stacking the modeling layers to form a 3D modeled object; and immersing the 3D modeled object modeled at the modeling in a removal solution to remove the powder to which the modeling solution is not applied. At the modeling, the modeling solution is applied such that a density of the modeling solution in an inside of the 3D modeled object is smaller than a density of the modeling solution in a surface of the 3D modeled object and an area of the powder to which the modeling solution is applied and an area of the powder to which the modeling solution is not applied are alternate in the inside of the 3D modeled object.