The picture shows the parallel robot produced by Wuhu Ruisi Robot Co., Ltd.Photo by Economic Daily reporter Du Fang
“Many years ago, parallel robots[-0.76% 资金 研报]Still lying in the laboratory, but now, more and more parallel robots are entering the factory assembly line, replacing manual work. “Huang Tian, a professor at Tianjin University and director of the Chinese Mechanical Engineering Society, said recently.
In the production lines of medical, food, electronic products, etc., parallel robots are widely used in the final packing and packing. Precise grasping, flexible rotation and quick response are its characteristics. It can put chocolate into the shape of a flower and put it into a box, which can replace the manual packing of some dangerous goods.
“In a pharmaceutical company, packing an infusion bag into a box is a difficult action for a robot to complete, because the bag is soft and difficult to grasp, and the production line speed is very fast. In the past, it was manually grasped, with a production line surrounding it. More than a dozen people pack into boxes, and now a parallel robot can replace one shift, and can pack 150 to 180 bags in one minute.” Huang Tian said.
It is precisely because robots have incomparable advantages over humans that more and more companies are beginning to try to put robots on the job. Huang Tian said, “People stand and repeat work for 8 hours, the labor intensity is high, and the product quality is prone to errors. Robots have greatly liberated human labor. In addition to improving speed and efficiency, all aspects of product quality and production safety problems will be solved. In some In special occasions, such as the operation of sterile workshops, robots can truly clean the environment and greatly reduce the safety and hygiene risks of production.”
A closer look at the parallel robot developed by the Huangtian team is very different from traditional robots. Most of the traditional robots are series robots. Like human arms, they need one joint and one joint for processing. Therefore, each joint must have a motor, while the parallel robot is like combining several arms together. A motor drive needs to be installed on the rack, and several arms can be operated freely, and can move with multiple degrees of freedom in horizontal, vertical and oblique directions.
“The series robot has its advantages, but the accuracy is not as good as that of the parallel robot, especially when high-speed motion is required, such as when handling light and small materials in the production field, the series is not as good as the parallel. Because the structure of the series robot determines that its inertia is large, and it is not good at high-speed motion. Moreover, the parallel robot occupies a relatively small area.” Huang Tian said.
The research of Huang Tian’s team in the field of parallel robots is at the leading level in China. After years of hard work, the Huangtian team has invented a new high-speed parallel robot technology with completely independent intellectual property rights, breaking through the five bottlenecks of geometric accuracy guarantee, high-speed stable control, operation equipment layout, material visual tracking, and grasping path planning. In 2001, Huang Tian’s team developed a high-speed parallel robot Diamond mechanism driven by an external rotation pair, and obtained the US patent and WO/PCT, which is an international first.
In recent years, with the adjustment of the industrial structure, the demand for robots in Chinese enterprises has grown explosively, and parallel robots have developed rapidly in such an environment. “It can be seen that the entire automation level is improving, and the robot is just one of the important carriers for the improvement of the automation level.” Huang Tian believes that although the robot currently has a large market demand and is developing rapidly, there are also many problems to be overcome. “There are a lot of inventions in China, but there are very few that can have practical value in the engineering field. Our scientific research, academic interest research needs to be combined with real engineering. To do it according to the needs of the engineering field, we must also break through foreign property rights and realize engineering. Design and actually apply it to engineering practice, every step in the middle is full of challenges.” Huang Tian said.
In order not to let the scientific research results remain silent in the school, the Huangtian team brought the robot developed by themselves to the market. Many Huangtian students have started their own businesses and established Robotics companies to help the industrialization of scientific research results. Among them, there is Wuhu Ruisi Robot Co., Ltd.
Wuhu Ruisi Robot Co., Ltd. is located in the agglomeration and development base of the robot industry in Wuhu City, Anhui Province. Although it was only established last year, it has developed two series of high-speed parallel and heavy-duty handling robots with more than ten specifications by virtue of the close combination of industry, academia and research, which can completely replace related foreign robot products.
“There are many companies coming to negotiate, and more and more companies are applying parallel robots to the production field. High-speed parallel robots are very mature in terms of theoretical research, key technology research, and experimental prototype production. Companies need such products, I hope More such products can be industrialized,” said Mei Jiangping, head of Wuhu Ruisi Robotics Co., Ltd. (Economic Daily reporter Du Fang
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