Original title: [Looking for companies with the most investment value] Exclusive interview with Erhansheng Transmission: Breaking the international monopoly, industrial robots have domestic “joints”
The robot is hailed as the “Crown Pearl” by the National 2025 High-end Equipment Manufacturing Strategy, and the joint deceleration Machines are the most critical and core components of industrial robots, but they have been controlled by humans for decades. Currently, this situation is being reversed. Ningbo Hansheng Transmission Technology Co., Ltd. independently developed the MRG series reducer to replace the RV reducer , and the FG series reducer to replace the harmonic reducer, which has broken Japan's monopoly in this field.
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Hansheng Transmission was established in 2017. It specializes in the design, development and manufacturing of precision robot joint reducers. Its products are suitable for the robotics industry and intelligent manufacturing fields. The company's products have already entered some domestic head robot manufacturers such as Zhuhai Gree, Shenyang Xinsong, Shenka Robot, etc. With the subsequent increase in production capacity, new customer groups will soon be developed, such as Nanjing Eston, South Korea's Hyundai, Dongguan Liqun Automation, Turing Robot , Dacha Robot , etc.
There are “stumbling blocks” on the road to innovation
The R&D, manufacturing and application of industrial robots are an important indicator of a country’s technological innovation and high-end manufacturing strength and level. The joint reducer is the most critical core component of industrial robots, and its cost alone accounts for 30% to 35% of the overall cost of the robot.
"The joint reducer connects the power source and the actuator. Its performance index, accuracy and precision life directly determine the performance index, reliability, stability and service life of the industrial robot body." Fan Zhengfu, chairman of Hansheng Transmission, said that the joint Reducers are mainly divided into RV reducers and harmonic reducers according to their technical principles. The
RV reducer adopts the two-stage transmission of planetary and cycloid principles and is mainly used for large joints. The harmonic reducer adopts the harmonic principle and is mainly used for small joints. Depending on the carrying capacity and usage location, each robot generally requires 3 to 4 RV reducers and 2 to 3 harmonic reducers.
But at present, the international reducer manufacturers that adopt the cycloidal principle are mainly Japan's Nabo and Sumitomo , Czech and Spinia, a joint venture between the Czech Republic and Germany. These three companies have applied for as many as 500 patents in the field of transmission. Among them, Nabo has monopolized the RV reducer industry for 40 years, and its global market share once reached 90%. The main manufacturers of small joint reducers using the harmonic principle include Japan's Hamonic and Xinbao, and China's Green. Among them, Hamonic's global market share once reached about 80%, and it is still in a monopoly position.
Looking at the domestic robot joint reducer industry, the overall level is subject to technological innovation. Most similar products are produced using reverse engineering imitation technology. With the monopoly of international giants for more than 40 years, it is almost impossible to achieve superior performance and cost advantages through imitation products. The "four major families" of robotics giants are unwilling to adopt domestic imitation products. In addition to the huge gap in product quality and performance indicators, the limitations of imitation technology and patent problems are also important reasons. Therefore, if you want to surpass the level of the world's top joint reducer manufacturers, you need to achieve subversion in technical principles and structures. Only then can you break through the product performance bottleneck and break the industry pattern.
opens up a new path and truly breaks through the "stuck neck"
Faced with the "siege" of patents, the most effective way is to take different technical routes and go from 0 to 1. Fan Zhengfu, who has been dealing with machinery all his life, chose this path. In 2011, Fan Zhengfu’s team began to delve into the innovation of reducer technology principles.
html For more than 1,300 years, planetary transmission, cycloid and harmonic principles have been the three mainstream technologies in the transmission field, accounting for more than 70% of the market share in the entire transmission field. The three mainstream technologies have their own advantages and disadvantages. Although cycloid and harmonic technology has limitations, it is very difficult to break through traditional technical bottlenecks and overcome many technical pain points of cycloid and harmonic technology.
In the 1980s, Japan's KAMO Company invented the cycloid-ball reducer, and five years ago, Stanford University in the United States invented the bead reducer, both to solve the technical pain points of cycloid and harmonic technology. However, these technologies are all subject to the shortcomings of their own principles and technologies. Although they can have advantages in specific application scenarios, they still cannot replace the widespread application of cycloidal and harmonic technologies in the field of robot joint reducers, and they are not expected to become the mainstream in the transmission field. technology.
needed to find a new way to achieve a breakthrough from 0 to 1. Fan Zhengfu's team focused on the research and development of technology and principles for 6 years.
"After 6 years, we finally creatively invented MRG transmission technology and FG transmission principle." Recalling the scene at that time, Fan Zhengfu still couldn't hide his excitement.
According to him, the FG transmission principle is a new transmission principle that engages in surface contact. It subverts the traditional involute , cycloid and other line contact meshing methods, and completely solves the problem of stress concentration when the teeth are stressed. Problems include greater load-bearing capacity, smooth transmission, low noise, less meshing sliding during transmission, and low friction. It truly achieves small volume, large speed ratio , and large output torque transmission, overcoming the traditional planetary transmission to the greatest extent. The cycloidal transmission and harmonic principles have their respective pain points and shortcomings, making them the ideal transmission principle in the field of robot joint reducers.
At the end of 2017, with mature technology and principles in mind, Ningbo Hansheng Transmission Technology Co., Ltd. settled in Ningbo High-tech Zone. Fan Zhengfu said that what attracts him most about Ningbo is the mature manufacturing industry chain and excellent industry innovation environment. As a national independent innovation demonstration zone, the High-tech Zone is the best among Ningbo regions. After the establishment of
, Hansheng Transmission spent another four years to move the MRG transmission technology and FG transmission principles from the laboratory to the production line. Up to now, Hansheng Transmission has applied for more than 10 invention patents, of which 5 technologies have applied for international PCT invention patents.
Competing with international giants for hundreds of billions of "cakes"
In the production workshop of Hansheng Transmission, joint reducers produced using MRG transmission technology and FG transmission principles are neatly stacked. Most of the reducers are gray and unremarkable in appearance, but Fan Zhengfu said that while overcoming many shortcomings of traditional technology, these reducers adopt innovative structural designs and contain domestically produced robot joint reducers with completely independent intellectual property rights. transmission technology.
Through this technology, Hansheng Transmission reduces the difficulty of product manufacturing and assembly, and at the same time realizes a transmission design with an ultra-large speed ratio, which can replace both RV reducers and harmonic reducers.
According to the test, the performance indicators of Hansheng transmission joint reducer have reached the world-class level. Compared with RV reducers from world-renowned companies, the rigidity is 1.5 times that of the same model of RV, and the accuracy and life span are more than 1.5 times; compared with harmonic reducers of the same volume, Hansheng Transmission's products are more than twice as rigid and load-bearing capacity. And there is no need to use special imported materials. Not long ago, related products also won the winner award in the first national disruptive technology innovation competition sponsored by the Ministry of Science and Technology.
In April 2022, the product entered the mass production stage. At present, Hansheng Transmission's monthly production capacity is close to 1,000 units, and orders are scheduled until the end of the year. With the continuous improvement of manufacturing technology, the annual output of Hansheng transmission joint reducers is expected to exceed 20,000 units with existing equipment.
"Preliminary estimates indicate that the global industrial product market for transmission technology exceeds 500 billion yuan. In the field of industrial robots, after Hansheng breaks the foreign technology monopoly, we are ready to export products abroad, and the first stop is Japan." Fan Zhengfu said , in addition to playing a role in industrial robots, assistance robots, humanoid robots, medical robots and other fields, providing key technical support for the industrial development needs of domestic robots, their technical principles can also be applied to engineering machinery, mining machinery , Traditional industrial fields such as port machinery, petroleum machinery, and crawler drives are helping to update and iterate China's manufacturing.
Source: Ningbo Stock Exchange public account
Text: Sun Jiali
