Additive Manufacturing Machining Allowance for Color Resolution
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In additive manufacturing using ink-jet heads, the deposition streaks on objects become conspicuous due to uneven layer thickness, leading to issues with surface color quality and resolution, as the ink for coloring is not uniformly applied throughout the object, causing variations in color expression and resolution depending on the thickness of the color region.
Innovation Solution
A building method and apparatus that allow users to input and generate data for varying the thickness of the surface color region and machining allowance, enabling control over color quality and resolution by using the same building material for both, ensuring the machining allowance is inconspicuous during polishing and maintaining desired color expression.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the color region is thinned to increase resolution, then resolution of the color layer is improved, but the color expression range of the color layer is reduced
Solution Approach 1:
The patent applies preliminary action by adding a machining allowance layer before the final polishing step. This allowance layer is specifically designed to be removed during polishing to eliminate deposition streaks, while the underlying color layer maintains its original thickness for optimal color expression. The machining allowance acts as a pre-prepared sacrificial layer that protects the color quality.
Solution Approach 2:
The patent segments the surface structure into multiple functional layers: a color layer with specific thickness for color expression, and a separate machining allowance layer for surface finishing. This segmentation allows independent optimization of each layer's function - the color layer maintains sufficient thickness for color range while the allowance layer handles the surface quality requirement.
2Adaptability or versatility
If the color region is thickened to widen color expression range, then color expression range is improved, but resolution of the color layer is reduced
Solution Approach 1:
The machining allowance layer is added in advance to compensate for the thickness of the color layer. By setting the allowance thickness equal to or greater than the color layer thickness, the system ensures that after polishing removes the allowance layer, the underlying color layer remains at its optimal thickness for both resolution and color expression.
3Manufacturing precision
If polishing is performed to make deposition streaks inconspicuous, then surface quality is improved, but the color region is thinned and surface color becomes different from intended coloring
Solution Approach 1:
The patent applies preliminary action by pre-depositing a machining allowance layer that is specifically intended to be removed during polishing. This allowance layer serves as a buffer that absorbs the material removal process, protecting the underlying color layer from being thinned. The polishing operation thus achieves surface quality improvement without compromising color accuracy.
Solution Approach 2:
The machining allowance layer acts as an intermediary between the polishing process and the color layer. It mediates the interaction by absorbing the mechanical action of polishing, preventing direct contact between the polishing tool and the color layer, thereby protecting the color integrity while still achieving the desired surface finish.
4Manufacturing precision
If the same building material is used for machining allowance and surface color region, then boundary between regions is eliminated and remaining allowance becomes inconspicuous, but additional material usage increases
Solution Approach 1:
The patent applies homogeneity by using the same building material for both the machining allowance layer and the surface color region. This creates a uniform material composition throughout, eliminating visible boundaries between regions. The allowance layer blends seamlessly with the color layer, and any remaining allowance after polishing becomes part of the surface color region, maintaining visual uniformity.
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 allows for high-resolution clear colors and stable wide color reproducibility, with the user able to prioritize resolution or color expression range based on object type and size, while ensuring the machining allowance is transparent and inconspicuous, thus enhancing the overall appearance of the object.
Implementation Method 1
the object is built by stacking a plurality of layers of ink formed by the ink-jet head
Data Source
AI summary
To provide a building method and a building apparatus for building an object having an inconspicuous deposition streak. The building method includes: receiving, from a user, a data on a thickness of a machining allowance added to the object; generating a building data to which a machining allowance having an input thickness is added; generating the object by depositing a building material based on the building data; and polishing a surface of the object.