Arc Welding Robot System Waveform Display
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Solution Overview
Problem
Existing arc welding systems using arc sensors face challenges in adjusting trace welding conditions, particularly in synchronizing the welding current with the weaving path, leading to delays and requiring manual empirical adjustments.
Innovation Solution
An arc welding robot system that displays the welding current waveform graphically, allowing for automatic adjustment of parameters through a teaching operation terminal with features like waveform shifting, filtering, and calculation units to determine optimal delay times, enabling precise compensation and synchronization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If automatic adjustment methods are used to adjust delay time from transmission of weaving motion command to feedback about welding current, then adjustment automation is improved, but it is next to impossible to derive an appropriate value from current waveform to vary largely
Solution Approach 1:
The patent introduces a teaching operation terminal as an intermediary device between the robot controller and the operator. This terminal provides graphical display of current waveforms and sampling current areas, enabling the operator to visually identify delay times and make accurate adjustments. The intermediary interface transforms the impossible automatic measurement into a feasible visual assessment process.
Solution Approach 2:
The patent replaces empirical manual adjustment with a visual-based adjustment method. By substituting the mechanical/empirical process with graphical waveform display and visual sampling area comparison, the system enables precise delay time identification without relying on trial-and-error empirical methods.
2Adaptability or versatility
If a person responsible for adjustment adjusts current waveform empirically, then adjustment flexibility is maintained, but time consumption and efficiency are reduced
Solution Approach 1:
The patent substitutes empirical adjustment with visual-based adjustment using graphical waveform display. The teaching operation terminal displays current waveforms and sampling current areas, allowing operators to quickly identify delay times visually rather than through time-consuming empirical trial and error, thereby maintaining flexibility while dramatically improving efficiency.
Solution Approach 2:
The patent uses graphical display with visual differentiation of waveform characteristics and sampling areas. By presenting adjustment information in a visual format with distinct graphical representations, the system enables rapid identification of delay times without losing adjustment flexibility.
3Loss of information
If waveform display and welding condition display are shown together, then information accessibility is improved, but ease of operation for parameter adjustment is not sufficient
Solution Approach 1:
The patent segments the display information into distinct functional areas: waveform display area, sampling current area, and parameter adjustment area. This segmentation allows operators to access comprehensive information while easily locating and adjusting specific parameters without confusion from mixed information presentation.
Solution Approach 2:
The teaching operation terminal serves as an intermediary interface that organizes and presents information in a structured manner. It mediates between the complex system data and the operator's needs, providing both comprehensive information display and easy parameter adjustment capabilities through its organized interface design.
Data Source
AI summary
To provide an arc welding robot system that displays a current waveform graphically during arc welding and realizes parameter adjustment on a display screen. An arc welding robot system comprises a robot controller and a teaching operation terminal. The robot controller comprises: an arc sensor; and a welding current storage unit that stores the current value of a welding current detected by the arc sensor during implementation of the arc welding. The teaching operation terminal comprises: a control unit; and a display on which data is displayed. The control unit comprises: a welding current display unit that displays the current value and the waveform of the welding current in any weaving cycle on the display; a sampling current area display unit that displays a sampling current area on the display; and a current waveform display shift unit that shifts the waveform of the welding current in a temporal axis direction on the display unit.