3D Point-Cloud Weld Line Generation Without CAD Models
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing weld-line generation methods require three-dimensional CAD data, making them time-consuming and prone to errors, especially for unskilled operators, and are not fully automated.
Innovation Solution
A weld-line generating apparatus and method that uses 3D point cloud data to automatically determine and generate weld lines between workpieces without requiring CAD data, by acquiring point cloud data, extracting edges, generating workpiece components, and determining adjacent workpieces and fitting lines for weld line generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If 3D CAD data is used for weld line generation, then manufacturing precision is improved, but device complexity and time consumption increase
Solution Approach 1:
The invention extracts only the essential geometric information (point cloud data) needed for weld line generation, removing the complexity of full 3D CAD data while preserving the necessary precision for determining workpiece shapes and positions
Solution Approach 2:
The invention creates a simplified digital representation (point cloud) that copies only the essential geometric features of workpieces needed for weld line generation, rather than processing complete 3D CAD models
2Productivity
If manual motion data generation is performed, then flexibility is maintained, but productivity decreases and error rate increases
Solution Approach 1:
The system performs automatic weld line generation by processing point cloud data and determining workpiece geometries autonomously, eliminating the need for manual operator intervention while maintaining high accuracy through algorithmic precision
Solution Approach 2:
The invention replaces manual operator actions with an automated computational system that processes point cloud data and generates weld lines automatically, substituting human skill with algorithmic reliability
3Measurement precision
If complete 3D CAD data processing is performed, then measurement precision is improved, but loss of time increases
Solution Approach 1:
The invention extracts only the necessary geometric information from point cloud data required for weld line generation, eliminating unnecessary data processing steps while maintaining sufficient measurement precision for the application
Solution Approach 2:
The system performs partial processing of geometric data - only extracting and analyzing the specific features needed for weld line determination rather than processing complete 3D CAD models, achieving sufficient precision with reduced time investment
Data Source
AI summary
A weld-line generating apparatus includes a point-cloud-data acquiring unit that acquires 3D point cloud data of workpieces to be welded that are arranged in a predetermined space, an edge extracting unit that extracts 3D point cloud data of edges from the 3D point cloud data acquired by the point-cloud-data acquiring unit, a workpiece point-cloud-data generating unit that generates a 3D point cloud data component of each of the workpiece based on 3D point cloud data that is obtained by removing the 3D point cloud data of edges extracted by the edge extracting unit from the 3D point cloud data acquired by the point-cloud-data acquiring unit, and a weld-line generating unit 24 that generates weld lines for the workpieces based on the 3D point cloud data components of the workpieces generated by the workpiece point-cloud-data generating unit.