In the placement process of smartphone assembly, due to the variety of accessories, different sizes, and high requirements for placement accuracy, Adtech "FR5215 hoisting SCARA+AVS vision system" is used to solve the automatic flexible accessories placement problem on the production line. Its repeat positioning accuracy reaches ±0.01mm, and the maximum load is 5KG.
Recently, Adtech has successfully introduced flying photography technology into such systems, which can effectively improve efficiency while ensuring accuracy.
Project Overview
Efficient, accurate and flexible automatic feeding mechanism (plasticine feeder + shielding and cover material basin machine), automatic placement multi-station platform (manipulator + multiple sets of vision systems), plus a blanking flow board, constitute the automatic Mounting production platform.
The picking and discharging process of the whole project is divided into five steps:
1. Reclaiming: The manipulator sucks plasticine from the feeder, and then runs to the position of the feeding basin machine for stacking, photographing, and reclaiming;
2. Deviation correction: the manipulator reaches the top of the flip-chip camera for fly-by-shot;
3. Unloading: paste plasticine on the PCB board;
4. Detection: Use the upper camera to locate the plasticine discharge condition again;
5. Put on the shielding cover.
Among them, the manipulator adopts Adtech AR6520 SCARA robot, with a load of 2-3 kg and a working radius of 450 mm; the clamp has 6 suction nozzles, which is convenient for expansion; in the final application of this process, the repeated positioning accuracy of the feeding after deviation correction reaches ±0.05 mm .
About Flying Shot
In the above project, Adtech AVS visual positioning system is used, and flying shooting technology is added. Unlike fixed shooting, when the grasped workpiece passes over the camera, it no longer needs to stop to take pictures, but directly on the robot. When moving, take pictures, and feed back the information of its instantaneous position and posture, and perform secondary correction and correction processing for the possible workpiece offset.
How to do fly shot?
"When the robot moves to the shooting point area, its internal algorithm will use the high-speed IO signal to trigger the camera to take pictures dynamically and without pause, and at the same time, the actual shooting position will be locked at high speed. Then use the position data returned by the camera and the high-speed locking position of the robot. , you can achieve position correction.”
Technical points:
Q: How do I trigger a photo at a suitable location without an external sensor?
A: Takes advantage of the technical advantages of Adtech, driving and controlling, and perceives the photo area through real-time location.
Q: In the process of continuous trajectory motion, how to detect multiple workpieces that pass through the field of view in sequence?
A: It is only necessary to teach different fly points according to workpieces in different positions, set a visual template for each fly point, adjust template parameters such as exposure, and finally return all visual data to the robot at one time, reducing the time required for receiving data. Complexity. This also maximizes the advantages of Adtech's shooting solution.
Q: The above introduction is based on the AVS vision control system independently developed by Adtech Robot. If a third-party vision is used, can the fly-shooting function be completed?
A: As long as the vision meets certain frame rate requirements and supports IO triggering.
Vision gives robots the ability to "see". New visual technologies such as flying shots benefit from the continuous iterative optimization of the vision system algorithm by Adtech, which allows visual perception, control theory and visual processing to be closely combined to achieve more precise control of robots or various real-time operations.
In the future, Adtech will continue to be guided by the needs of intelligent manufacturing, focusing on the research and development of robot vision solutions to promote the transformation and upgrading of the manufacturing industry.