Motion performance:
Degree of freedom: 6-axis industrial welding robots can be used for simple arc welding, but for complex shaped welds, 6-axis robots have more advantages. They can flexibly adjust the position and posture of the welding gun in space, easily dealing with complex welds.
Load capacity: usually 6-10kg, it needs to be selected based on the total weight of accessories such as welding guns, cables, wire feeding tubes, etc. used to ensure that the robot can stably carry and move accurately.
Workplace: The selection should be based on the size and shape of the welded workpiece. For example, welding large structural components requires large workspace robots; For welding small components, robots with smaller working spaces can be selected to improve space utilization and motion flexibility.
Maximum speed: When all axes are linked, the maximum linear velocity at the end of the wrist is generally around 1-3m/s. In actual welding, although the welding speed is usually low, such as 5-50mm/s, the speed of empty stroke and return time affects production efficiency, and rapid movement can reduce auxiliary time by 6.
Repetitive positioning accuracy: generally required to reach ± 0.2- ± 0.4mm. In mass production, ensure accurate welding positions every time, maintain stable and consistent weld quality, and reduce welding defects.
Trajectory repeatability accuracy: usually needs to reach below ± 0.3-0.5mm. For complex trajectory welding, such as curve and arc welds, high-precision trajectory repetition can ensure the shape and size accuracy of the weld seam.
welding technological properties:
Interpolation function: Equipped with linear interpolation and arc interpolation functions, the robot can accurately weld spatial welds composed of straight lines and arcs, meeting the shape requirements of most welded workpieces.
Swing function: It can freely set the swing mode and parameters within the spatial range (x-y, z), such as swing frequency, swing amplitude, swing type, etc. When welding wide welds or when strengthening the fusion on both sides of the weld, swinging can ensure the quality of the weld.
Welding parameter setting: The welding current can be adjusted within the range of 100-500A to adapt to different materials and plate thicknesses; Voltage between 10-50V, matched according to current and welding speed; The welding speed is generally 5-50mm/s, which can be adjusted according to the welding process requirements. At the same time, the setting of arc initiation and termination parameters is also important, such as arc initiation current, voltage, time, current decay time and method during termination, etc., to avoid welding defects at the initiation and termination locations.
Multi layer welding function: After the first layer of welding teaching is completed, the robot should be able to automatically generate welding programs for the remaining layers, including welding paths, parameter adjustments, etc., to improve the efficiency and quality of multi-layer welding and ensure good bonding between each layer of welds.
Welding sensor interface: It has a starting point detection interface that can be connected to corresponding sensors to detect the welding starting position on the workpiece, improving the accuracy of welding starting; Equipped with interfaces for weld seam tracking sensors, such as laser sensors, visual sensors, etc., it can track the position of the weld seam in real-time during the welding process, automatically adjust the robot's motion trajectory, ensure that the welding gun always welds along the weld seam, and improve welding quality and adaptability.
control performance:
Coordinated control: It can achieve coordinated motion of multiple robots and positioners. Through precise control algorithms, multiple robots can work together to weld on the same workpiece, or cooperate with positioners to maintain the relative posture of the welding gun and workpiece in accordance with the welding process requirements, while preventing mutual collision.
Self protection function: Drive system overheating self power-off protection can prevent motor and other drive components from being damaged due to overheating; The automatic power-off protection for exceeding the limit of motion can prevent the robot from moving beyond the safe range, causing equipment damage or personnel injury; The overspeed self power-off protection can stop the robot in a timely manner when its movement speed is abnormal, ensuring safe operation. In addition, installing tactile or proximity sensors in the robot's working area can immediately stop working when it comes into contact with obstacles or abnormal situations, avoiding accidents.
Self diagnostic function: It can automatically check the main components such as motors, drivers, controllers, etc; Perform fault diagnosis on main functional modules such as motion control module, welding control module, etc., issue fault alarm signals in a timely manner, and display the fault location, facilitating maintenance personnel to quickly locate and eliminate faults, reducing equipment downtime, and improving production efficiency.
Other performance:
Memory capacity: generally expressed as the coefficient that can store robot instructions, the total number of bytes stored, or the maximum number of teaching points. Large capacity memory can store long teaching programs to meet the welding needs of complex workpieces, such as automotive body welding, which requires storing a large amount of welding trajectories and parameter information.
Programming method: Teaching programming involves manually operating the robot to record welding trajectories and parameters, which is intuitive, convenient, and suitable for simple tasks; Offline programming utilizes computer software to program in a virtual environment, which can improve programming efficiency, reduce on-site debugging time, and is suitable for complex tasks.
Power source parameters and power consumption: The power source is usually a power source with a voltage of 380V and 50Hz. The power consumption of the robot varies depending on its load capacity and movement speed, generally around 1-5kW. Reasonable configuration of power supply equipment ensures stable operation of the robot.