In addition, China's service robot market has expanded rapidly, which has become a highlight of the robot market application. In 20 18, the market size of service robots in China is expected to reach184 billion USD, with a year-on-year increase of about 43.9%, which is higher than the growth rate of the global service robot market. By 2020, with the rapid development of emerging application scene robots such as parking robots and supermarket robots, the market size of service robots in China is expected to exceed 4 billion US dollars.
After nearly 40 years of development, China's robot technology has achieved breakthroughs and leaps in basic research, product development and manufacturing level, but the gap with developed countries still exists. As long as we make unremitting efforts to catch up, China robots will definitely bloom the charm made in China on the world robot stage.
Shortcomings of China's robot industry
With the maturity of China's robot market, China has made positive progress in key technological breakthroughs and diversified applications, but it is undeniable that the market competitiveness of domestic robots is still not strong, and the core technology is still the key for China's robot industry to fill the shortcomings and climb the value chain.
Nowadays, around the innovative application of emerging technologies such as big data, Internet of Things and artificial intelligence, the "pearl in the crown of manufacturing" robot industry is at the forefront of technological breakthroughs and industrial changes, and is becoming a new kinetic energy under the new normal of China's economy. 20 18 China robot industry development report shows that the robot market in China has entered a period of rapid growth. In 20 18, the robot market in China is expected to reach 8.74 billion dollars, with an average growth rate of 29.7% from 20 13 to 20 18. However, under the huge market volume, 70% of the industrial robot market in China is foreign brands, which shows that "the contradiction between the performance of China's own brand products and the high-end application demand of key industries still exists", and domestic robots are absent in the high-end application field.
Breaking through the core technology is the key.
Although China's own brand robots are not competitive in high-end applications, China has made positive progress in some key technological breakthroughs and diversified applications with the continuous expansion of domestic industrial robot application industry, wider application scope and higher penetration rate. At present, China has taken breaking through the key core technologies of robots as an important strategy for scientific and technological development. In terms of industrial robots, domestic manufacturers have overcome some problems in the fields of key core components such as speed reducer, servo control and servo motor, and the trend of localization of core components has gradually emerged. The application scope has rapidly expanded to sub-industries such as plastics, rubber and food. After automobiles and electronics, hardware bathroom, furniture and household appliances have also become the main application fields of domestic industrial robots. In terms of service robots, intelligent related technologies basically keep pace with the international leading level. China's technological innovation in the field of artificial intelligence is accelerating, and the number of patent applications in China is in the same order of magnitude as that in the United States, especially the rapid growth of application-level patents such as computer vision and intelligent voice, which has spawned a number of innovative and entrepreneurial enterprises. In terms of special robots, policy guidance has led to the continuous improvement of the technical level of special robots, and new progress has been made in the research and development of products such as special drones and underwater robots. At present, in the field of special robots, China has initially formed a series of products such as special drones, underwater robots, search and rescue/explosive ordnance disposal robots, and has formed advantages in some fields.
Industrial robot is a general machine equipped with memory device and terminal execution device, which can complete various actions or processes to replace human labor. Usually in production, it can replace workers to do monotonous, frequent and repetitive long-term operations, or work in dangerous and harsh environments. It can improve production efficiency and product quality, and is an effective scheme for enterprises to supplement and replace labor force.
At present, the development of industrial robots is characterized by high speed, precision, compact body structure, many degrees of freedom, improved rigidity, and heavy load or fast response in key fields. For example, the load of welding robots in automobile production is mostly between 150-300Kg, and the assembly robots in the electronic field need to respond quickly to the accessories on the assembly line.
In the field of mechanical transmission, reducer is an intermediate device connecting power source and actuator. Usually it is the high-speed running power of meshing motor, internal combustion engine, etc. Use the pinion on the input shaft to reduce the speed and transmit more torque. At present, the more mature and standardized reducers are: cylindrical gear reducer, turbine reducer, planetary gear reducer, planetary gear reducer, RV reducer, cycloidal pin wheel reducer and harmonic reducer. Since 1980s and 1990s, high-performance precision reducers with simple and compact structure, high transmission power, low noise and stable transmission have been needed for the development of emerging industries such as aerospace, robotics and medical devices, among which RV reducer and harmonic reducer are two important precision reducers.
Application field of precision reducer
Position distribution of precision reducer in six-axis industrial robot
RV (rotation vector) reducer
RV reducer is developed on the basis of cycloidal pin-wheel drive, which has two-stage deceleration and central disk support structure. Since 1986 was put into the market, it has been the "royal" reducer for robots with its advantages of large transmission ratio, high transmission efficiency, high motion accuracy, small backlash, low vibration, high rigidity and high reliability.
Structure diagram of Nabotsk RV series reducer
Nabotsko RV series reducer
Harmonic reducer
Harmonic reducer consists of harmonic generator, flexible theory and rigid wheel. Its working principle is that the harmonic generator makes the flexible wheel produce controllable elastic deformation, and the power is transmitted through the meshing between the flexible wheel and the rigid wheel to achieve the purpose of deceleration. According to different waveform generators, there are cam type, roller type and eccentric disc type. Harmonic reducer has large transmission ratio, small shape, few parts and high transmission efficiency. The single machine transmission ratio can reach 50-4000, and the transmission efficiency can reach 92%-96%. Web page link