Welding Robot Torch Teaching Along a Weld Line
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Solution Overview
Problem
Existing welding systems and robot control programs struggle to perform welding from a start point to an end point along a weld line efficiently, requiring complex and difficult-to-operate teaching processes.
Innovation Solution
A welding system and control program creation device that acquires position and posture information of a welding torch relative to a weld line, allowing for the creation of a control program that enables easy-to-operate teaching and consistent welding along the specified weld line.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If complex teaching processes are used to achieve precise welding along the weld line, then welding precision is improved, but operational complexity increases
Solution Approach 1:
The system creates a virtual model (copy) of the workpiece and weld line in the teaching device. The operator teaches the weld line by tracing over the displayed weld line on the screen, which automatically generates the corresponding robot motion data. This copying approach eliminates complex manual teaching procedures while maintaining high welding precision, as the virtual model guides the teaching process intuitively.
Solution Approach 2:
The patent replaces traditional mechanical teaching methods (manual positioning and data input) with a display-based teaching interface. The teaching device displays the workpiece and weld line graphically, allowing the operator to teach by following the visual guide on screen rather than using complex mechanical positioning systems. This substitution significantly simplifies the teaching operation while ensuring accurate weld line tracking.
2Reliability
If traditional teaching methods are used for welding robots, then comprehensive control is achieved, but teaching time increases
Solution Approach 1:
The system performs preliminary processing of the weld line data and creates a virtual model before the actual teaching process. The teaching device displays the pre-processed weld line information, allowing the operator to quickly trace and teach without needing to manually input each point. This preliminary preparation significantly reduces teaching time while maintaining reliable control through the pre-validated virtual model.
Solution Approach 2:
By using a virtual copy of the workpiece and weld line, the system allows rapid teaching through visual tracing rather than time-consuming manual measurement and data entry. The copied virtual model preserves all necessary geometric information while enabling much faster teaching operations, thus reducing teaching time without compromising control reliability.
Data Source
AI summary
A welding system includes a welding robot provided with a torch, and a welding robot control program creation device. The welding robot control program creation device is configured to acquire position information of a welding start point and a welding end point on a workpiece, and posture information capable of specifying a posture of the torch with respect to a weld line at a welding teaching point on the weld line connecting the welding start point and the welding end point, and create a welding robot control program for performing welding from the welding start point to the welding end point based on the position information and the posture information. The welding robot is configured to perform welding on the workpiece based on the welding robot control program.