Laser-Line 3D Shoe-Part Modeling for Robotic Tool Paths
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Solution Overview
Problem
Manual methods for manufacturing shoe parts are resource-intensive and prone to high variability, making them inefficient and inconsistent.
Innovation Solution
An automated system that uses laser projection and camera imaging to generate 3D models of shoe parts, allowing for the creation of dimension data that can be used to automate manufacturing processes by converting the data into a recognized coordinate system for robot tool paths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If automated systems are introduced to improve manufacturing efficiency, then productivity increases, but device complexity increases
Solution Approach 1:
The automated manufacturing system is divided into distinct functional modules: laser projection unit, camera imaging unit, coordinate system conversion module, and robot control unit. Each module performs a specific task in the 3D modeling and manufacturing process, allowing for independent optimization and maintenance while achieving overall automation.
Solution Approach 2:
The system creates accurate 3D digital copies of shoe parts through laser scanning and camera imaging. These digital models serve as virtual replicas that can be manipulated, analyzed, and used to generate manufacturing instructions without requiring physical prototypes or manual measurements, thereby improving efficiency while managing complexity through digitalization.
2Manufacturing precision
If 3D modeling is used to improve manufacturing precision, then automation capability increases, but measurement and detection difficulty increases
Solution Approach 1:
A laser line is projected onto the shoe part surface to serve as an intermediary reference. The camera captures the deformation of this laser line according to the surface topography, converting complex 3D surface measurement into 2D image analysis. This intermediary approach simplifies the detection process while maintaining high measurement precision.
Solution Approach 2:
Traditional mechanical contact measurement methods are replaced with optical-based laser projection and camera imaging. This substitution eliminates mechanical wear, contact forces, and associated complexities, enabling non-contact, high-precision 3D modeling of complex shoe part geometries.
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 reduces variability and increases efficiency in shoe part manufacturing by enabling precise automation of processes such as cutting, adhesive application, and assembly, while also facilitating quality control and defect identification.
Implementation Method 1
a laser that projects a laser beam onto a section of the shoe part
Implementation Method 2
a camera that records multiple images of the projected laser line, each image depicting a representation of the projected laser line
Data Source
AI summary
Manufacturing of a shoe is enhanced by creating 3-D models of shoe parts. For example, a laser beam may be projected onto a shoe-part surface, such that a projected laser line appears on the shoe part. An image of the projected laser line may be analyzed to determine coordinate information, which may be converted into geometric coordinate values usable to create a 3-D model of the shoe part. Once a 3-D model is known and is converted to a coordinate system recognized by shoe-manufacturing tools, certain manufacturing steps may be automated.