01. Advantages of the Fan Blade Scanning System
This system is mainly used for the welding of axial and centrifugal fan blades, offering several advantages over the previous position-tracking welding method:
No teaching required, no programming needed, simple and easy to use.
Automatic detection of welding start and end points to achieve full welding.
Real-time 3D scan image viewing.
Compatible with both axial and centrifugal fans.
Dual-side welding achievable through offset.
No need to consider the impact of arc light.
02. Problems Solved by the Fan Blade Scanning System
Fans are mainly divided into axial and centrifugal types. With the continuous upgrade of industrial products and the rapid development of high-tech industries, centrifugal and axial fans are increasingly used for cooling in industrial products. The principle of centrifugal fans: airflow enters axially into the rotating blade channel, is thrown to the impeller's outer edge by centrifugal force, and is discharged from the outlet. The principle of axial fans: gas enters axially into the rotating blade channel, is pressurized, and then discharged axially from the other side.
The extensive use of fans has accelerated the process of fan welding automation. However, the efficiency or quality of mainstream position-tracking welding is not satisfactory. If using the position-tracking method, the curvature of the fan blade may require multiple point searches to complete the welding. The welding cycle time for position-tracking is also relatively long. If using the tracking method, teaching and debugging interference is significant, and weld point tracking may not be stable. The welding cycle and final effect may not meet customer requirements.
03. Introduction to the Fan Blade Scanning System
The fan blade scanning system is based on the Advantech PAWIN robot and can scan and automatically weld axial and centrifugal fan blades. The robot, paired with a high-distance sensor, scans the entire weld seam to obtain point cloud data, uploads it to the industrial PC software for weld seam trajectory calculation and recognition, and outputs six point positions to the robot for welding. The positioner control allows for cyclic scanning welding.
To use, the robot needs to be taught the scanning points and establish communication, after which it can automatically run the program and connect to the upper computer for direct scanning welding.
04. Fan Blade Scanning System Workflow
Set up communication between the robot and sensor.
Calibrate the robot and sensor.
Import the program template and set parameters.
Set the teaching program points.
Automatically run the program and wait for the upper computer's start command.
Select the fan template weld seam.
Click to connect the robot and sensor.
Set up the image.
Other settings - six-point offset.
Other settings - input the width of double-sided welded fan blades.
Click the "Start Operation" button.
