Molding Wall Thickness Recognition via Surface Area Analysis
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Solution Overview
Problem
Current technologies face challenges in accurately recognizing and determining the basic wall thickness of molded articles with varying thicknesses, which can lead to defects like sinking due to uneven solidification and increased molding shrinkage ratios.
Innovation Solution
A molding wall thickness recognition apparatus that calculates the surface area of each surface based on three-dimensional shape information and determines the basic wall thickness by comparing these areas, using a CPU-driven system with CAD information storage and display capabilities to identify potential deformation parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If wall thickness is increased to reduce molding shrinkage ratio, then manufacturing precision is improved, but the molded article may exhibit sinking due to uneven solidification
Solution Approach 1:
The patent applies local quality by determining different basic wall thicknesses for different regions of the molded article. The system calculates surface areas of multiple surfaces and identifies the minimum surface area to establish region-specific wall thickness standards, allowing each region to have optimized wall thickness that prevents both sinking and excessive shrinkage locally.
2Stability of the object's composition
If wall thickness is decreased to prevent sinking, then solidification uniformity is improved, but molding shrinkage ratio increases
Solution Approach 1:
The system determines basic wall thickness for each surface individually based on its surface area. By comparing multiple surfaces and selecting the minimum surface area as the reference, each surface receives an appropriate wall thickness specification that prevents sinking while minimizing overall shrinkage.
3Device complexity
If basic wall thickness is not accurately determined, then design complexity is reduced, but defects such as sinking and increased shrinkage occur
Solution Approach 1:
The patent segments the molded article into multiple surfaces and evaluates each surface's area independently. By dividing the article into discrete surfaces and comparing their areas, the system systematically determines basic wall thickness for each region, ensuring manufacturing precision through a structured multi-step process.
Solution Approach 2:
The patent replaces manual wall thickness determination with an automated computer-based system that calculates surface areas and determines basic wall thickness algorithmically. This substitution of mechanical/design manual processes with computational methods ensures accurate and consistent wall thickness determination across all surfaces.
Data Source
AI summary
Provided is a molding wall thickness recognition apparatus, including a calculation portion that calculates a surface area of each surface that configures a molded article in each wall thickness, based on three-dimensional shape information which illustrates a shape of the molded article having different wall thicknesses, and a determining portion that determines the wall thickness of the surface area that satisfies preset conditions as a basic wall thickness, by comparing each surface area in each wall thickness calculated by the calculation portion.