According to 2019-2015 Current situation analysis and Development Prospect Research Report of China’s motor industry issued by China Industry Research Network, motor manufacturers in China coexisted in all kinds of ways, such as foreign-funded enterprise, joint enterprise, state-owned enterprise, joint-stock enterprise and individual enterprise, whose annual output value is from several million hundred RMB to millions of yuan. Experts predicted that during the 11th Five Year Plan, the growth of economic aggregates of planetary gear motor would reached double digit for the development of country’s overall economy.
Product category that motor industry involved includes gear motor, Cycloidal pin wheel motor, harmonic drive and worm gear motor, etc. Now let me introduce the development of transmission of planetary motor.
Planetary Motor Achieved Mechatronics
In micro machine, not only micro planetary gear motor that can transmit driving force is required, but that with power driven device is needed. In other words, micro machine requires compact gear driving device including micro motor and micro planetary gear motor, so the micro machine has functionalities of driving and deceleration transmission. The features of gear transmission device in mechatronics with above functions are that the output axis and the input axis are coaxial and the axis of motor is compactly connected with its load. In structure, the axis of motor can be connected with the output axis of planetary gear motor, in other words, the axis of motor and the gear axis of sun wheel a are connected on the same main axis. The output axis of planetary gear motor (the axis that connected with internal gear e) is the output axis of the combination, so the built-in gear drive device is combined with motor and planetary gear motor, which means the output axis of the low speed motor containing motor and planetary gear motor can connected with working machine directly. The present problem lies in the requirement of micro motor that has similar shape and size with micro planetary gear motor, to achieve practicability of micro planetary gear motor with motor.
The Frequently-used Micro Planetary Gear Motor
The Applications of Planetary Gear Motor
Gear motor is mechanical drive devices adopted in many fields in national economy. The product category that gear motor industry involves is including gear motor in all kinds, planetary gear motor and worn gear motor, while includes all kinds of exclusive transmission devices like accelerating devices, speed regulating devices, and composite transmission devices including flexible transmission device. And the service area of planetary gear motor involves metallurgy, coal industry, building materials, watercraft, water conservancy project, electric-power industry, construction machinery and petrochemical industry.
Improving The Gear Motor Lubrication Is Within Reach
The lubrication of gear in gear driving systems is important in development of micro planetary gear transmission. Many experts doing the research in tribology are devoted to this problem. According to relative literature, in general gear motor that transmits driving force, the smaller the diameter of main axis is, the greater the proportion of friction torque in total power loss. But measuring small friction torque accurately is not easy to achieve in micro machine. It’s calculated that the loss proportion of friction torque of micro planetary gear motor in total power loss will be increased. At present, people are really concerned about the research in micro tribology, expecting the lubrication of micro planetary gear motor can be solved in the foreseeable future, promoting the practicability of micro planetary gear motor.
With the urging importance of the machinery manufacturing industry by country, the demand for gear motor of enterprises expands. The application of gear motor can fasten the development of electric power, construction machinery, construction materials and energy industry, So that the needs for gear motor of these industries is increasing. In a word, the production of gear motor will be heating up to meet the need of market.