Reducer - Reduce costs and increase efficiency
In the average cost of industrial robots, the main body accounts for 30%, the reducer accounts for 30%, the private server system accounts for 20%, and the controller accounts for 10%; The gross profit is 15%, 40%, 35%, and 25% respectively.

RV reducers have higher stiffness and rotational accuracy. In articulated robots, RV reducers are generally placed in positions with heavy loads such as the base, boom, and shoulders. Nabotek, Huandong Technology.

The characteristics of small volume, light weight, and large transmission ratio of harmonic reducers make them widely used in light load fields such as collaborative robots and service robots. In the field of industrial robots, harmonic reducers are generally used in robot arms, wrists, or hand joints. Hamernaco, Green Harmonics
The precision planetary reducer, servo motor, and controller together form the driving unit of the mobile robot.

Harmonic reducers have the advantages of large single-stage transmission ratio, small volume, small mass, high motion accuracy, and can work normally in enclosed spaces and medium radiation conditions. They can be widely used in light load fields such as collaborative robots and service robots. Has strong advantages in robot arms, wrists, hands and other components;

RV reducers have a wide range of transmission ratios, stable accuracy, high fatigue strength, and higher rigidity and torque carrying capacity, making them advantageous in heavy load areas such as robot arms and machine bases. At present, the two are applicable in different fields and cannot replace each other. RV reducers are mainly used for robot joints weighing over 20KG, while harmonic reducers are used for robot joints weighing less than 20KG;

Planetary reducers have the advantages of high rigidity, high wear resistance, high torque, high transmission efficiency, and long service life, and are commonly used in Cartesian robots and traditional industrial automation.

RV reducer
The transmission device of the RV reducer consists of two parts: the first stage involute cylindrical gear planetary reducer mechanism and the second stage cycloidal pinwheel planetary reducer.

Motion transmission process: The rotation of the servo motor is transmitted to the planetary gear i through the input gear, and the speed is correspondingly reduced according to the gear ratio between the input gear and the planetary gear [first stage reduction]. The crankshaft is directly connected to the planetary gears at the same speed. Two cycloidal gears are installed between the eccentric area of the crankshaft and the needle roller bearing. When the crankshaft rotates, the cycloidal gears installed on the eccentric part also make eccentric motion around the input shaft. On the other hand, there are evenly spaced needle rollers inside the needle housing, which have one more tooth than the cycloidal gear. When the crankshaft rotates one revolution, the cycloidal gear undergoes an eccentric motion while contacting the needle rollers. At this time, the output planetary carrier rotates one tooth in the opposite direction to the rotation direction of the crankshaft. This rotation is output to the shaft of the second deceleration unit (second stage deceleration).