Offline Welding Teaching Program Updates by Welding Line Group
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Solution Overview
Problem
Existing offline teaching devices for welding systems require significant labor to change welding conditions across multiple coordinate positions in a teaching program, as operation instructions and welding instructions are separately registered and must be adjusted collectively to improve welding results.
Innovation Solution
The offline teaching device includes a control unit with selection, first change, and second change functions, along with a welding line storage unit and teaching program storage unit, allowing operators to change welding conditions for multiple coordinate positions simultaneously by assigning welding line identification information, reducing the need for individual adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If operation instructions and welding instructions are separately registered in different lines in the teaching program, then the instructions can be controlled independently by robot and welding device respectively, but it becomes difficult to change welding conditions collectively across multiple coordinate positions, requiring significant manual labor
Solution Approach 1:
The patent merges operation instructions and welding instructions into unified welding condition groups that can be collectively managed. By associating multiple coordinate positions with a single welding condition group, the system enables simultaneous modification of welding parameters across multiple positions, resolving the contradiction between independent control and collective modification.
Solution Approach 2:
The welding condition group structure serves multiple functions: it stores both operation instructions (torch position, orientation) and welding instructions (current, voltage, speed), and can be applied to multiple coordinate positions simultaneously. This multi-functionality allows a single change to propagate across all associated positions, improving ease of operation.
2Manufacturing precision
If welding conditions are changed for one coordinate position, then the welding result may be improved, but it requires changing the same conditions for all other coordinate positions manually to maintain consistency, increasing the operator's burden
Solution Approach 1:
The system performs preliminary grouping of welding conditions across multiple coordinate positions before actual welding. By pre-associating coordinate positions with welding condition groups and storing these relationships in a welding condition management table, the system enables rapid propagation of changes without requiring manual intervention at each position, thus reducing time loss.
Solution Approach 2:
When a welding condition is modified in a welding condition group, the change is automatically copied to all coordinate positions associated with that group. This copying mechanism ensures consistency across all positions while eliminating the need for manual repetition of changes, directly addressing the time loss issue.
3Measurement precision
If the teaching program stores detailed welding conditions for each coordinate position separately, then precise control is achieved, but modification of common welding parameters requires changing each position individually, reducing productivity
Solution Approach 1:
The patent segments the teaching program into hierarchical layers: welding condition groups at the upper level and coordinate positions at the lower level. This segmentation allows independent management of welding parameters at the group level while maintaining precise association with specific coordinate positions, enabling both precise control and efficient bulk modification.
Solution Approach 2:
The welding condition group acts as an intermediary between the operator and individual coordinate positions. Instead of directly modifying each position's welding conditions, the operator modifies the group, which then mediates the propagation of changes to all associated positions. This intermediary structure preserves precision while boosting productivity.
Data Source
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AI summary
In an offline teaching device in the related art, in the case of changing a teaching program, even in the case of performing the same change at each teaching point, it is necessary to perform the change with respect to each teaching point. The offline teaching device of the present disclosure has a selection function, a first change function, a second change function, a welding line storage function, and a teaching program storage function. The selection function causes one welding line among a plurality of welding lines stored in the welding line storage function to be selected. The first change function causes content of a welding conditions configuring the welding line selected with the selection function to be changed. The second change function causes the welding conditions of entire instructions in the teaching program having the same welding line identification information as welding line identification information that is assigned to the welding line selected with the selection function to be changed to the same content as content changed with the first change function.