Traditional Culture Encyclopedia - Photography and portraiture - How do industrial robots work?
How do industrial robots work?
Teaching is also called guidance, that is, the user guides the robot to operate step by step according to the actual task;
The robot will automatically remember the position, posture, motion parameters and process parameters of each action in the guidance process, and automatically generate a program to perform all operations continuously;
After the teaching is completed, just send the start instruction to the robot, and the robot will accurately complete all the operations step by step according to the teaching action;
The above is the working principle of industrial robots. Now Haizhi Robot will talk about the composition, movement mode and working principle of industrial robots in detail.
Working principle of industrial robot (Figure 1)
Trajectory motion of manipulator;
The spatial curve of the robot manipulator's end trajectory from the starting position and posture to the ending position and posture is called the path.
The task of trajectory planning is to use a function to "interpolate" or "approximate" a given path and generate a series of "control set points" along the time axis to control the motion of the manipulator. At present, there are two commonly used trajectory planning methods: spatial joint interpolation and Cartesian spatial motion.
Working principle of industrial robot (Figure 2)
Composition of robot arm executive mechanism;
Wrist: the part connecting the hand and the arm, which is mainly used to adjust the direction of grasping objects.
Arm: it is an important part to support the caught object, arm and wrist. By cooperating with the driving device, various actions can be realized.
Hand: The parts that contact with the object to be operated include gripping hand and sucking hand. The clamping hand is composed of fingers or claws and force transmission mechanisms, and there are many types of force transmission mechanisms, such as chute rod, connecting rod, diagonal rod, rack and pinion, lead screw nut spring type, gravity type and so on.
Working principle of industrial robot (Figure 3)
Robot manipulator position detection equipment;
The position detection device is mainly composed of sensors, and the control system realizes the motion mode of the manipulator with various degrees of freedom through the information fed back by the sensors, thus forming a stable closed-loop control.
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