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How to set the trajectory for welding robots
Category：answer Publishing time：2025-09-17 02:11:37 Browse： Times
With the continuous development of industrial automation technology, the application of welding robots in modern manufacturing is becoming more and more widespread. They can efficiently and accurately complete various welding tasks, significantly improving production efficiency and welding quality. However, the efficiency of welding robots is inseparable from the precise trajectory setting. Trajectory setting is one of the core contents of welding robot programming, directly affecting welding quality and production efficiency. This article will introduce in detail the basic process and precautions of welding robot trajectory setting.
Firstly, the basic process of trajectory setting
1. Clarify Welding Task Requirements
Before trajectory setting, it is first necessary to clarify the basic parameters such as the type of welding workpiece, material thickness, welding position, and weld form. This information will directly affect the planning of the robot path and the selection of process parameters.
2. Choose the Appropriate Programming Method
The trajectory of welding robots can be programmed in various ways, mainly including online teaching programming and offline programming.
- Online teaching programming: By operating the handheld teaching pendant, manually guide the robot to move to each key point, record the path points, and save the trajectory. Suitable for tasks with simple structures and frequent changes.
- Offline programming: Using CAD/CAM software for 3D modeling and path planning, complete the trajectory setting on the computer and then import it into the robot system. Suitable for tasks with complex structures or large-scale production.
3. Define Key Path Points
During the programming process, it is necessary to define the welding starting point, welding path, welding end point, and safe return point. Each key point should be set accurately to ensure that the gun posture (angle, distance) and speed meet the welding process requirements.
4. Adjust Welding Parameters
After the trajectory setting is completed, parameters such as current, voltage, and welding speed need to be set according to the welding process requirements to ensure that the weld quality meets the standard. These parameters are usually set through the robot control cabinet or welding power supply.
5. Trajectory Simulation and Debugging
After completing the initial programming, it should be tested for empty running or simulation to check whether the robot's movement is smooth, and whether there is a risk of collision or path deviation. Necessary adjustments should be made to optimize the trajectory path.
Secondly, matters needing attention in trajectory setting
- Gun posture control: The correct angle and distance of the welding gun are crucial for the formation of the weld, and the welding gun usually maintains a rear tilt angle of 10°~15° to the direction of the weld advancement.
- Obstacle handling: Around the trajectory planning, it is necessary to fully consider the surrounding environment to avoid collisions between the robot and the workpiece, fixture, or equipment.
- Welding start and end treatment: A slight pause should be made at the start of the weld to ensure a good arc, and appropriate backwelding should be performed at the end to prevent arc pit cracks at the end.
- Trajectory continuity: The transition between path points should be smooth to reduce sudden stops and starts, in order to improve welding quality and stability.
Summary
Welding robot trajectory setting is a key link for high-quality welding. Rational planning of the path, precise control of posture, and scientific parameter setting are the prerequisites for ensuring welding efficiency and quality. With the development of intelligent technology, in the future, welding robots will become more intelligent, with the ability to automatically identify welds and adaptively adjust trajectories, thus further improving the level of automated welding. For enterprises, mastering the technology of welding robot trajectory setting is an important part of enhancing core competitiveness.
With the continuous development of industrial automation technology, the application of welding robots in modern manufacturing is becoming more and more widespread. They can efficiently and accurately complete various welding tasks, significantly improving production efficiency and welding quality. However, the efficiency of welding robots is inseparable from the precise trajectory setting. Trajectory setting is one of the core contents of welding robot programming, directly affecting welding quality and production efficiency. This article will introduce in detail the basic process and precautions of welding robot trajectory setting.
Firstly, the basic process of trajectory setting
1. Clarify Welding Task Requirements
Before trajectory setting, it is first necessary to clarify the basic parameters such as the type of welding workpiece, material thickness, welding position, and weld form. This information will directly affect the planning of the robot path and the selection of process parameters.
2. Choose the Appropriate Programming Method
The trajectory of welding robots can be programmed in various ways, mainly including online teaching programming and offline programming.
- Online teaching programming: By operating the handheld teaching pendant, manually guide the robot to move to each key point, record the path points, and save the trajectory. Suitable for tasks with simple structures and frequent changes.
- Offline programming: Using CAD/CAM software for 3D modeling and path planning, complete the trajectory setting on the computer and then import it into the robot system. Suitable for tasks with complex structures or large-scale production.
3. Define Key Path Points
During the programming process, it is necessary to define the welding starting point, welding path, welding end point, and safe return point. Each key point should be set accurately to ensure that the gun posture (angle, distance) and speed meet the welding process requirements.
4. Adjust Welding Parameters
After the trajectory setting is completed, parameters such as current, voltage, and welding speed need to be set according to the welding process requirements to ensure that the weld quality meets the standard. These parameters are usually set through the robot control cabinet or welding power supply.
5. Trajectory Simulation and Debugging
After completing the initial programming, it should be tested for empty running or simulation to check whether the robot's movement is smooth, and whether there is a risk of collision or path deviation. Necessary adjustments should be made to optimize the trajectory path.
Secondly, matters needing attention in trajectory setting
- Gun posture control: The correct angle and distance of the welding gun are crucial for the formation of the weld, and the welding gun usually maintains a rear tilt angle of 10°~15° to the direction of the weld advancement.
- Obstacle handling: Around the trajectory planning, it is necessary to fully consider the surrounding environment to avoid collisions between the robot and the workpiece, fixture, or equipment.
- Welding start and end treatment: A slight pause should be made at the start of the weld to ensure a good arc, and appropriate backwelding should be performed at the end to prevent arc pit cracks at the end.
- Trajectory continuity: The transition between path points should be smooth to reduce sudden stops and starts, in order to improve welding quality and stability.
Summary
Welding robot trajectory setting is a key link for high-quality welding. Rational planning of the path, precise control of posture, and scientific parameter setting are the prerequisites for ensuring welding efficiency and quality. With the development of intelligent technology, in the future, welding robots will become more intelligent, with the ability to automatically identify welds and adaptively adjust trajectories, thus further improving the level of automated welding. For enterprises, mastering the technology of welding robot trajectory setting is an important part of enhancing core competitiveness.
