Automated 3D Protective Case Generation via Triangulation

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Solution Overview

Problem

Existing methods for generating protective cases for three-dimensional models are inefficient and prone to human error, requiring manual design and significant time and resource investments for optimization and iteration.

Innovation Solution

A digital method for generating protective cases involves specifying an installation direction, constructing a reverse coordinate transformation matrix, transforming coordinates, determining model closure, slicing the model, constructing two-dimensional polygons, iteratively updating polygons, and performing surface reconstruction using triangulation to output a protective case model.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If manual design methods are used for generating protective cases, then professional designers can create customized cases, but the process is inefficient and requires substantial time and resource investments

Engineering Contradiction:

Improvecustomization capabilityVSAvoiddesign efficiency

Core Design Contradiction:

Ease of manufactureVSProductivity

Solution Approach 1:

The patent replaces manual mechanical design operations with an automated digital system. The protective case generation is achieved through computer-based algorithms that automatically create 3D models from product data, eliminating the need for manual modeling while maintaining customization capability.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system enables self-service protective case generation where the digital model automatically creates customized protective cases based on input product parameters. The automated workflow allows the system to serve itself by generating design schemes without requiring continuous human intervention, thereby improving productivity.

Inventive Principle:

Principle #25Self-service

2Ease of manufacture

If manual design methods are used for generating protective cases, then designers can create protective cases, but human factors cause instability and inaccuracy in design

Engineering Contradiction:

Improvedesign flexibilityVSAvoiddesign stability

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The patent replaces human designers with an automated digital system that eliminates human factors causing instability. The computer-based algorithm consistently applies the same design rules and parameters, ensuring stable and accurate protective case generation without the variability inherent in manual design processes.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Ease of manufacture

If conventional design methods are used, then protective cases can be generated, but iteration and optimization require substantial time and resource investments

Engineering Contradiction:

Improvedesign capabilityVSAvoidoptimization time

Core Design Contradiction:

Ease of manufactureVSLoss of time

Solution Approach 1:

The patent performs preliminary digital simulation and analysis before actual protective case production. The system evaluates multiple design schemes through virtual testing, identifying the optimal design before manufacturing, thereby reducing the need for time-consuming physical iterations and optimizations.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent creates digital copies and virtual models of protective cases for simulation and testing. These digital replicas allow for rapid iteration and optimization in the virtual environment without requiring physical prototypes, significantly reducing the time and resources needed for design optimization.

Inventive Principle:

Principle #26Copying

4Productivity

If digital generation methods are implemented, then design efficiency is improved and resource utilization is optimized, but automated processing complexity increases

Engineering Contradiction:

Improvedesign efficiencyVSAvoidprocessing complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent implements a universal digital platform that handles multiple functions including model generation, simulation, analysis, and optimization within a single integrated system. This multi-functional approach consolidates various processing tasks, reducing overall system complexity while maintaining high productivity and resource utilization.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS20250124681A1Method, System, Medium, and Device for Digitally Generating Protective Cases for Three-Dimensional Models

Publication Date: 2025.04.17 HANGZHOU DIANZI UNIV

AI summary

The present disclosure discloses a method, system, medium, and device for digitally generating protective cases for three-dimensional models. The method comprises: firstly, specifying an installation direction of a protective case model, and transforming coordinates of an input model using a coordinate transformation matrix; pre-processing the input model if it is not closed and then slicing the input model to obtain contour lines of each layer; constructing polygons by a symmetric difference operation, then performing surface reconstruction on the protective case model using a triangulation method, and finally outputting the protective case model. Compared with conventional manual design methods and manually-intervened digital design methods, the digital generation method with high automation in the present disclosure cuts down design time while ensuring the accuracy of the model and improving the production efficiency of protective cases through manual errors reduction.