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Planetary gear reducer: The main transmission structure is: planetary gear, sun gear, outer ring gear. Due to structural reasons, the single-stage deceleration is minimum 3, the maximum is generally less than 10, and the common reduction ratio is 3.4.5.6.8.10. The speed reducer series generally does not exceed 3, but there are some large reduction ratios than the custom reducer has 4 speed reduction. Compared with other reducers, the planetary reducer has high rigidity, high precision (single level can be less than 1 point), high Transmission efficiency (single stage is 97%-98%), high torque/volume ratio, lifetime maintenance-free, etc. Because of these features, planetary reducers are mostly installed on stepper motors and servo motors to reduce the speed. Increase the torque and match the inertia. The rated input speed of the reducer can reach up to 18000 rpm (depending on the size of the reducer itself, the larger the reducer, the smaller the rated input speed). The output torque of the industrial grade planetary reducer is generally not more than 2000Nm. The torque planetary reducer can achieve more than 10000Nm. The working temperature is generally between -25°C and 100°C. The operating temperature can be changed by changing the grease. Several concepts about the planetary reducer: the number of stages: the number of sets of planetary gears. a set of star gears without The method satisfies a large gear ratio, and sometimes requires 2 sets or 3 sets to meet the requirements of a large gear ratio. Due to the increase in the number of star gears, the length of the 2 or 3 speed reducer will increase, and the efficiency will increase. There will be a drop. Return gap: the output is fixed, the input rotates clockwise and counterclockwise, so that the input end produces a rated torque +-2% torque, the input end of the reducer has a slight angular displacement, this angular displacement It is the return gap. The unit is "minute", which is one-sixtieth of one degree. Some people call it backlash. Planetary cycloid reducer: All transmissions can be divided into three parts: input part, deceleration part, output section. A double eccentric sleeve with a 180° misalignment is mounted on the input shaft, and two roller bearings called a jib are mounted on the eccentric sleeve. The central hole forming the H mechanism and the two cycloidal wheels is an eccentric sleeved slewing bearing. a raceway, and the cycloidal wheel and the needle gear are engaged with a set of annularly arranged pin teeth to form an internal meshing speed reduction mechanism with a tooth difference of one tooth (in order to reduce friction, in a reducer with a small speed ratio) , the needle teeth have a pin sleeve). When the input shaft rotates one year with the eccentric sleeve, the movement of the cycloidal wheel becomes a plane motion with both revolution and rotation due to the characteristics of the tooth profile curve on the cycloidal wheel and the restriction on the pin gear on the needle gear. When the input shaft rotates positively, the eccentric sleeve also rotates for one week, and the cycloidal wheel rotates one tooth in the opposite direction to obtain the deceleration, and then the W output mechanism is used to transmit the low speed rotation movement of the cycloidal wheel through the pin shaft to the output shaft. This results in a lower output speed. ■ Cycloid reducer features 〇 high-speed ratio and high-efficiency single-stage transmission, which can achieve a reduction ratio of 1:87, with an efficiency of over 90%. If multi-stage transmission is adopted, the reduction ratio is larger. 〇 Compact and small size Due to the planetary transmission principle, the input shaft output shaft is on the same axis, making the model as small as possible. 〇 Smooth running noise Low Cycloidal pin teeth have a large number of teeth, a large overlap coefficient and a mechanism for balancing the components, so that vibration and hum are limited to a minimum. 〇 Reliable use and long service life Because the main parts are made of high-carbon chrome steel, high strength is obtained by quenching treatment (HRC58～62), and some transmission contact adopts rolling friction, so it has long durability and long service life. 〇 Reasonable design, easy maintenance, easy to disassemble and install, minimum number of parts and simple lubrication.