3D Weld Line Generation Using Member Configuration Matching
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Solution Overview
Problem
Existing techniques for specifying weld lines in welding robots require manual operator input and are inefficient, especially when determining whether to weld on each surface, which can take a long time.
Innovation Solution
A weld line data generation device that automatically specifies weld lines by recording possibility information for member configurations, extracting adjacent member combinations from 3D data, and generating weld line data for weldable configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual designation of each surface is performed to specify weld lines, then the welding path can be determined, but the operator requires significant manual work and time
Solution Approach 1:
The system enables automatic specification of weld lines by having the computer automatically determine welding paths based on three-dimensional data and pre-stored possibility information, eliminating the need for manual operator intervention in designating each surface while maintaining accurate weld line specification
Solution Approach 2:
The system performs preliminary action by storing possibility information indicating welding feasibility for various member configurations in advance. This pre-prepared information allows the computer to quickly determine weld lines by referencing stored data rather than performing manual analysis for each surface
2Reliability
If brute force process is performed to determine whether to make weld line on each surface, then complete coverage is achieved, but it takes a very long time to specify the weld line
Solution Approach 1:
The system automatically determines weld lines by having the computer reference pre-stored possibility information for each member configuration, eliminating the need for time-consuming brute force processes while ensuring complete and reliable weld line determination through systematic evaluation of all member combinations
Solution Approach 2:
The system performs preliminary action by pre-storing possibility information indicating whether welding is possible for various member configurations. This allows the computer to quickly determine weld lines by referencing stored data rather than performing exhaustive brute force analysis for each surface combination
3Extent of automation
If automatic specification of weld line is implemented, then manual work is reduced, but the system complexity increases due to need for possibility information storage and processing
Solution Approach 1:
The system applies segmentation by dividing the automatic weld line specification process into distinct functional units: a storage unit for possibility information, an extraction unit for identifying adjacent members, and a generation unit for creating weld line data. This modular structure manages system complexity while achieving high automation
Solution Approach 2:
The system uses possibility information as an intermediary data structure that bridges the gap between three-dimensional member data and weld line specifications. This intermediary layer simplifies the automation process by providing pre-evaluated welding feasibility for various member configurations, reducing the computational complexity required for automatic weld line determination
Data Source
AI summary
A weld line data generation device generates weld line data specifying a portion to be welded by a welding robot. The weld line data generation device includes: a recording unit in which possibility information indicating possibility of welding by the welding robot is recorded for each combination of configuration names of members; an extraction unit configured to extract a combination of two or more adjacent members from three-dimensional data of a structure to be manufactured by welding; and a generation unit configured to generate, when a combination of configuration names corresponding to the extracted combination of two or more members is weldable, the weld line data specifying a portion to be welded between the two or more members corresponding to the combination.