Laminated Casting Mold for High-Aspect-Ratio Microstructures
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Solution Overview
Problem
Current methods for manufacturing micro-scale components with high aspect ratios face challenges in achieving precise geometric shapes and high-resolution features, particularly in casting and molding processes, where existing technologies struggle to produce complex three-dimensional structures with fine details and high accuracy.
Innovation Solution
The method combines stack lamination techniques with molding processes to create laminated molds, allowing for the engineering of precision micro-scale cavities and the use of these molds as intermediates in casting or molding processes, enabling the production of components with high aspect ratios and complex geometries through the assembly and bonding of micro-machined layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional casting and molding processes are used, then manufacturing simplicity is maintained, but manufacturing precision and ability to produce high aspect ratio structures deteriorate
Solution Approach 1:
The mold is divided into multiple thin layers that can be independently fabricated and then stacked to form the complete mold structure. This segmentation allows each layer to be precisely controlled and assembled to create complex three-dimensional cavities with high aspect ratios that would be difficult to achieve with conventional single-piece molds.
Solution Approach 2:
The invention transitions from conventional two-dimensional mold surfaces to three-dimensional stacked layer structures. By building molds in the vertical dimension through layer stacking, the process achieves high aspect ratio features and complex geometries that extend beyond the limitations of traditional planar mold designs.
2Shape
If conventional molding processes are used, then process simplicity is maintained, but ability to produce complex three-dimensional structures with fine details deteriorates
Solution Approach 1:
Complex three-dimensional cavity shapes are achieved by segmenting the mold into multiple layers, each containing specific geometric features. The stacking of these segmented layers creates the final complex geometry, allowing fine details to be precisely controlled in each individual layer during fabrication.
Solution Approach 2:
The mold layers are pre-fabricated with precise geometric features before assembly. This preliminary action of creating accurately shaped layers enables the final complex three-dimensional structure to be achieved through simple stacking, rather than requiring complex machining or molding operations on the complete mold.
3Manufacturing precision
If high aspect ratio structures are produced, then component complexity and precision are improved, but manufacturing difficulty increases
Solution Approach 1:
High aspect ratio structures are achieved by utilizing the vertical stacking dimension. Instead of attempting to create high aspect ratio features in conventional horizontal molding, the invention builds structures upward through layer stacking, naturally achieving high aspect ratios with fine feature resolution in each layer.
Solution Approach 2:
The complex high aspect ratio structure is segmented into multiple thin layers, each with manageable complexity. This segmentation reduces the manufacturing difficulty of individual layers while the cumulative stacking achieves the overall high aspect ratio structure with fine details that would be difficult to produce as a single component.
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 enables the fabrication of micro-devices and structures with high aspect ratios and complex geometries, improving the accuracy and precision of micro-scale component manufacturing by allowing for the creation of molds with precise features that can be used in subsequent casting processes.
Implementation Method 1
solidify the casting material to form a solid casting
Implementation Method 2
heating and pressing to bond layers together
Data Source
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AI summary
Certain exemplary embodiments can provide a composition, system, machine, device, manufacture, circuit, and/or user interface adapted for, and/or a method and/or machine-readable medium comprising machine-implementable instructions for, activities that can comprise, after removing a cast device from a stack-lamination-derived mold, said cast device formed from a molding composition, applying a desired shape to said cast device to form a shaped cast device, said molding composition comprising: a ceramic composition comprising silica; an cycloaliphatic epoxy binder composition, said cycloaliphatic epoxy binder composition present in said molding composition in an amount up to 30% by weight of said molding composition; a silicone composition comprising a siloxane resin, said silicone composition present in said molding composition in an amount up to 30% by weight of said molding composition; and a solvent composition adapted to dissolve said cycloaliphatic epoxy binder composition and said silicone composition.