The KUKA robot needs to calibrate the zero point every time it is turned on, mainly due to the following considerations:
1、 Ensure accuracy and precision
Mechanical reasons: Long term operation or external impact may cause slight displacement of robot joints or components, which can affect the positioning accuracy of the robot.
By recalibrating the zero point at startup, the robot can ensure precise positioning in its workspace.
Electronic and sensor reasons: The encoders and sensors of robots may be affected by electromagnetic interference, temperature changes, or other external factors, leading to measurement errors.
Re calibrating the zero point can reduce these errors and ensure the operational accuracy of the robot.
2、 Security considerations
Robots need to know their accurate starting position to ensure that their operation does not cause accidental injury or machine damage.
Zero point calibration provides a reliable reference point for robots, which helps to avoid misoperation and safety accidents.
3、 Meet specific industry needs
For certain applications or industries, such as healthcare or aerospace, there may be a record requirement to perform zero point calibration every time the robot is started or restarted.
This helps ensure that the operation of robots always meets the prescribed standards in these high-precision and strictly required fields.
4、 Eliminate potential errors
During daily operation, robots may accumulate some errors, which may be caused by friction, wear, or other external factors.
By recalibrating the zero point at each startup, these potential errors can be eliminated, ensuring that the robot always operates from a known reference point.
5、 Method of zero point correction
The zero point calibration of KUKA robots usually involves various methods such as mechanical calibration, software calibration, visual calibration, and inertial calibration.
The specific choice of method depends on the model of the robot, application requirements, and on-site conditions.
Mechanical calibration: By adjusting the joint connection points of the robot or using special tools for small adjustments, the robot can achieve a known and accurate position.
Software calibration: Using specialized software equipped on KUKA robots, adjust the zero position of the robot by inputting known position coordinates.
Visual calibration: Use cameras or other sensors to detect the position of the robot's end effector and calibrate the robot based on the detected position information.
Inertial calibration: Utilizing the robot's built-in inertial measurement unit (IMU) to detect its attitude and position, and perform corresponding calibration.