The rotating gearbox solution makes the robot head rotate more intelligently, such as nodding, shaking his head, bending his head, looking down and looking up, so that the robot owner’s behavior, the communication with people is more natural, the communication experience is better, and it will be easier to get people’s favorite.
Drive demand for robot head rotation
With the development of AI, while enjoying the convenience given by the robots, there are also some problems. The robot head structure lacks the function of pitching and rotating, and the expression is dull, giving a bad service experience. Taking educational robots as an example, the service robots on the market generally add a display screen to the robot’s head to display the robot’s eyes in an animated form to increase the richness of the robot’s expression.Use the head rotation device to realize the horizontal rotation and shaking of the head,but most of these robots have poor flexibility in head rotation, and the control is complicated and the cost is high.
The simple drive solutions for robot head rotation
Simple devices of the robot head rotation , including the moving head device and the pitch device, whether it is the pitching motion in the rotation or the nodding action of the robot, requires the power transmitted through the rack and pinion to realize these motions. The robot head attached to the vertical bevel gear has two degrees of freedom: it rotates around the vertical axis (controlled by the right stepper motor) and rotates around the horizontal axis (controlled by two stepper motors). Their direction and speed must be the same. It is a spherical mechanism (the axes of all five rotating joints are parallel) and both motors are grounded.
Servo motor solutions for robot head rotation
The intelligent rotation of the robot head can also be driven by the servo motor to achieve forward and reverse rotation.The structure of the servo motor is relatively simple. In general, a small DC motor and a set of deceleration gears, plus a potentiometer (connected to the gear reducer to function as a position sensor), form a control circuit board.
Good heat dissipation
During the working process of the head, the robot needs to the motor to drive. The driving motor generates a certain amount of heat during the driving process. If the heat cannot be dissipated in time, it will affect the work of the circuit board inside the robot trunk and the robot service life.Our single-stage,2-stage and multi-stage gear drive structure for robot head rotation can be customized,and its reduction ration,input speed and torque can also be adjusted,which can help the robot head to simulate the left and right sides of human head rotate up and down and improve the robot life.
Failure Testes of servo motors for robot head
The reliability and stability of the product is an important index to evaluate the technical level of the product.In order to accurately analyze, evaluate and verify the performance of the product,so ZHAOWEI sets up a variety of laboratories,which includes high low temperature testing chamber,3D vibration testing device,thermal shock testing chamber,rain and spray testing chamber,rain and spray testing chamber and so on.
If the robot can achieve some basic head and face movements, such as blinking, opening a mouth, nodding, shaking his head, etc., it will be easier to get people’s favorite. Nowadays, the use of robot servo motor is becoming more and more extensive. The demand for service robot reducers mainly comes from two aspects. First, small robots, entertainment and educational robots.Second,large robots, family assistants,collaborative robots. Small robots require smaller size, high reliability, clutch mechanism, high cost performance, and corresponding small gear module. For large service robot reducers, gears and motors are designed with small hysteresis and high power density,long life, impact resistance, etc. Now and in the future, ZHAOWEI will help robot manufacturers to realize the intelligent and technological robots in micro gear drive systems.
robot head gearbox
robot head gear motor
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