3D Offline Welding Teaching for Robot Scan Coverage
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current offline teaching devices struggle to efficiently create scanning operation teaching programs for welding robots, as they cannot visualize the three-dimensional scannable range linked with the robot's operation, leading to potential failures in scanning the intended area during appearance inspections.
Innovation Solution
An offline teaching device and method that acquire three-dimensional shape data of a workpiece and operation trajectory, generate three-dimensional regions to be scanned, and create a teaching program for a welding robot to scan these regions based on the acquired data and operator input, ensuring accurate and efficient scanning operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional offline teaching devices are used to create scanning operation teaching programs, then the basic teaching program can be created, but the three-dimensional scannable range cannot be visualized and linked with robot operation, leading to potential scanning failures
Solution Approach 1:
The patent transforms the scanning operation teaching from traditional two-dimensional plane teaching to three-dimensional spatial teaching. By generating and displaying three-dimensional scannable range data that corresponds to the robot's operation trajectory in 3D space, the system enables comprehensive visualization of the scanning area, ensuring the robot can reliably scan the intended three-dimensional region without missing areas.
2Productivity
If manual creation of scanning teaching programs is performed without three-dimensional range visualization, then the program can be created, but time-consuming corrections are required to achieve accurate scanning
Solution Approach 1:
The system performs preliminary generation of three-dimensional scannable range data before the actual scanning operation. By calculating and displaying the complete scannable range in advance based on the robot's operation trajectory and sensor parameters, operators can verify the scanning coverage beforehand and make necessary adjustments without time-consuming trial-and-error corrections during actual operation.
3Measurement precision
If three-dimensional scannable range is visualized and linked with robot operation, then scanning accuracy is improved, but device complexity increases
Solution Approach 1:
The patent introduces three-dimensional scannable range data as an intermediary element between the robot's operation trajectory and the scanning operation. This intermediary data structure represents the spatial coverage area and serves as a bridge, allowing the system to calculate and verify scanning accuracy without requiring complex direct modeling of the entire scanning process.
Data Source
AI summary
An offline teaching device includes an input unit receiving an operator operation; an acquisition unit acquiring three-dimensional shape data of a workpiece produced by welding, an operation trajectory of the welding, and a scanning range of a sensor; a generation unit generating three-dimensional regions to be scanned by the sensor based on the acquired scanning range and a scanning section designated by the operator operation; and a control unit disposing at least one of the three-dimensional regions on the three-dimensional shape data of the workpiece based on the operator operation input to the input unit, and creating and outputting, to a welding robot that performs the welding, a teaching program for scanning the three-dimensional region based on the disposed three-dimensional region and the operation trajectory of the welding.