With the gradual disappearance of the demographic dividend, China has become the world's largest industrial robot market. According to the Ministry of Industry and Information Technology, by 2020, China will form a relatively complete industrial robot industry system, with a high-end market share of more than 45%. At present, the use of industrial robots in China is mainly concentrated in the automotive industry and the electrical and electronic industry, arc welding robots, spot welding robots, and handling robots .
Below we will talk about the current advantages and disadvantages of industrial robots from a technical perspective.
Versatility
The industrial robot is programmable and supports multi-degree of freedom motion, so the application is more flexible. Although not as human, industrial robots are much more flexible than many common machines for industrial automation (specialized for a class of industrial applications or a custom-built electromechanical integration solution). When industrial application changes are not too big, robots can be reprogrammed to meet new demands without having to invest heavily in hardware. But correspondingly, its relative deficiency will be efficiency. After all, the special plane is customized for an application, so although the efficiency is optimized at the expense of versatility, it can be done very well on the index that the customer is very concerned about.
2. Electromechanical performance
Industrial robots generally achieve motion accuracy of less than 0.1 mm (refer to repeated motion to point accuracy), grab objects weighing up to one ton, and stretch up to three or four meters. Although such performance may not easily complete some "crazy" processing requirements on Apple's mobile phone, for most industrial applications, it is enough to successfully complete the task. As the performance of robots has gradually improved, some previously impossible tasks have become feasible (such as laser welding or cutting, which required special high-precision equipment to guide the laser's direction, but as the accuracy of the robot increases, it also changes. Deco can rely on the exact motion of the robot itself instead.) However, compared with traditional high-end equipment, such as high-precision CNC machine tools, laser calibration equipment, or special environment (high temperature or ultra-low temperature) equipment, industrial robots are still unable.
3. Human-machine cooperation
Traditional industrial robots work in cages because it is dangerous (imagine a guy holding dozens or hundreds of kilograms squatting at four meters per second, no one wants to get close). The main reason is that general robots, based on cost and technical considerations, do not integrate additional sensors to sense external special situations (such as sudden touches), it will only be "stupid" in accordance with human programmed procedures. The movement of the day, unless there is an external signal telling it to stop. So the common solution is to equip the robot with a cage. When the cage door is opened, the robot will automatically pause when it receives the signal. Safety considerations naturally bring a lot of extra costs to robot integration. The cage may not be expensive, but after all, it is necessary to carefully consider the production line layout, increase the production line area, change the cooperation mode of human-machine, etc., thus affecting production. effectiveness. Therefore, the industrial robots that have received more attention recently are proud of being able to work safely with people, such as Baxter of RethinkRobotics, PR series of Universal Robots, and semi-concept semi-finished products of many traditional industrial robot giants (ABB, kuka, Yaskawa, etc.). Robot. From the perspective of industrial demand, after the automation requirements for precision, speed and weight have been solved by traditional industrial robots, it is indeed time to start meeting human-machine safety cooperation.
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