3D Shoe Upper Model Flattening Algorithm for Pattern Accuracy
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Solution Overview
Problem
The conventional shoe design process involves repetitive discussions and physical sample revisions due to differences between 2D design drawings and 2D shoe patterns created by designers and pattern makers, leading to increased time and cost, especially when dealing with multi-layered materials and deformations during the conversion process.
Innovation Solution
A method and system that generates a 3D shoe upper model and maps it to a 2D plane, allowing direct collaboration between designers and pattern makers, using a processor to create a 2D mapping boundary, execute a flattening algorithm, and establish a mapping relation between 3D and 2D models to reduce distortions and deformations, enabling real-time modifications and efficient production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If 2D design drawings are converted to 2D shoe patterns using conventional methods, then the design can be translated into production-ready patterns, but differences between design drawings and patterns require repetitive discussions and physical sample revisions
Solution Approach 1:
The patent introduces a 3D digital shoe upper model as an intermediate representation between 2D design drawings and 2D production patterns. This 3D model enables visualization and modification of the design in three-dimensional space, allowing designers and pattern makers to identify and resolve discrepancies before generating the final 2D patterns, thereby reducing iterative physical sampling and improving pattern accuracy.
Solution Approach 2:
The patent creates a digital 3D copy of the shoe upper that preserves the design intent while enabling precise measurement and pattern generation. This digital model serves as a virtual prototype that can be repeatedly modified and analyzed without requiring physical samples, reducing time loss while maintaining manufacturing precision.
2Adaptability or versatility
If multiple layers or diverse materials with different thickness are used in the shoe upper, then design flexibility and material performance are improved, but deformation occurs during conversion from design drawing to 2D pattern
Solution Approach 1:
The patent applies different thickness values and material properties to different regions of the 3D shoe upper model. Each panel or section can have locally defined material characteristics, allowing the system to account for variations in material thickness and properties when generating patterns, thereby preventing deformation even when diverse materials are used.
Solution Approach 2:
The patent modifies the 3D model parameters to reflect actual material properties, including thickness variations across different panels. By incorporating these parameter changes into the digital model before pattern generation, the system compensates for deformation that would otherwise occur during the conversion process, maintaining manufacturing precision despite material diversity.
3Manufacturing precision
If physical shoe upper samples are created repeatedly for discussion and confirmation, then design accuracy is improved, but cost and time consumption increase
Solution Approach 1:
The patent replaces physical shoe upper samples with a digital 3D model that can be repeatedly modified, visualized, and approved by stakeholders. This virtual prototype serves the same design validation function as physical samples but without the associated material, labor, and time costs, thereby improving design accuracy while reducing production energy loss.
Solution Approach 2:
The patent substitutes the mechanical process of creating and handling physical samples with a digital computing system. The 3D model can be manipulated, visualized, and approved through software, replacing the physical iteration process and significantly reducing the cost and energy associated with producing multiple physical prototypes.
Data Source
AI summary
This invention provides a shoe upper design model generating method, system and non-transitory computer readable storage media, including steps of providing a 2D mapping boundary, providing a 3D upper, performing a flattening algorithm on the 3D upper with respect to the 2D mapping boundary, constructing a 2D upper boundary, creating an upper design drawing on the 2D upper boundary, intersecting the 2D upper boundary and the 2D mapping boundary to form a 2D upper design area and mapping grids in the 2D upper design area onto grids in the 3D upper, thereby obtaining an upper design model containing the mapping relation between the 2D upper design area and the 3D upper. Accordingly, the upper pattern making time and cost can be saved, and the distortion and deformation in the process of 2D-3D conversion can be reduced, thus the completed 2D upper design drawing can be used in production process directly.