Sensor technology is an important guarantee for the accuracy of end effector positioning of robotic arms. Engineers often use high-precision sensors to monitor the position and posture of the end effector of a robotic arm in real time, thereby improving the end effector positioning accuracy of the robotic arm.

In this issue, Xiaoming will share with everyone the application of laser displacement sensors in the positioning of robotic arms~

Detection Scenario

On the lithium battery automation production line, the mechanical arm suction cup accurately sucks up the battery and moves it to the next process; Sensors need to be installed on the robotic arm here to obtain Z-axis height data and detect the height of the robotic arm from the battery surface.

Specific requirement: Robot arm positioning

Accuracy requirement: The mechanical arm suction cup should be attached to the surface of the battery pack to ensure that the battery can be lifted normally

On site situation:

1. There should not be too much gap or excessive fit between the suction cup of the robotic arm and the battery pack

2. Sensors are installed on the robotic arm to follow the back and forth movement of the robotic arm

3. The height of the sensor from the surface of the battery pack is about 390mm

solution

By using the laser displacement sensor MLD21-500N-485, the Z-axis height data of the robotic arm can be accurately obtained, effectively improving the automation motion control level of the robotic arm and achieving more efficient and accurate production operations.

·Using the laser triangulation method, the laser emitter emits visible red laser light onto the surface of the object being tested through a lens. The scattered laser light from the surface of the object is then received by the internal CMOS sensor through a receiver lens. Depending on the distance, the CMOS sensor can "see" the light spot at different angles. Based on this angle and the known distance between the laser and camera, the digital signal processor can calculate the distance between the sensor and the object being measured.

🔹 One click teaching function, easy and fast to use

🔹 Adjusting the digital display on the panel makes debugging more intuitive and convenient

🔹 Automatic exposure adjustment, which can automatically adjust the amount of received energy according to the application scenario

🔹 The detection distance of 100/200/500mm is optional, making it the preferred choice for long-distance detection

🔹 485 communication function, which can read values for comparison operations through communication

🔹 Simultaneously equipped with NPN and PNP output modes to meet different signal requirements