The advantages of industrial robots
2020-12-02 13:43:35
*Improve efficiency
*quality improvement
*Improve the working environment
*Longer working hours
Disadvantages of industrial robots
*Large capital investment
*Requires professional knowledge
*High operating costs
*Affect the global economy
Advantages of industrial robots:
1. Universality
The industrial robot is programmable and supports multi-degree-of-freedom motion, so the application is more flexible. Although not as good as human beings, industrial robots are still much more flexible than many common special machines in industrial automation (mechatronics integrated solutions designed for a type of industrial application or a customer). When the industrial application changes not too much, the robot can be reprogrammed to meet the new demand without having to make a lot of investment in hardware. But correspondingly, its relative shortcoming will be efficiency. After all, the special plane is customized for an application, so even at the expense of versatility, efficiency optimization is achieved, and it can accomplish very well in terms of output, which is an indicator that customers are very concerned about.
2. Electromechanical performance
Industrial robots can generally achieve a motion accuracy of less than 0.1 mm (referring to the point-to-point accuracy of repeated motion), grasping objects weighing one ton, and stretching up to three or four meters. Although this kind of performance may not easily complete some "crazy" processing requirements on Apple mobile phones, it is sufficient for most industrial applications to successfully complete the task. With the gradual improvement of robot performance, some previously impossible tasks have become feasible (such as laser welding or cutting, which used to require special high-precision equipment to guide the direction of laser, but with the improvement of robot accuracy, it is now also changed. DEK relies on the accurate movement of the robot itself instead). However, compared with traditional high-end equipment, such as high-precision CNC machine tools, laser calibration equipment, or equipment in special environments (high temperature or very low temperature), industrial robots are still beyond reach.
3. Human-machine cooperation
Traditional industrial robots work in cages because they are really dangerous (imagine a guy holding tens or hundreds of kilograms at a speed of four meters per second, no one wants to approach it). The main reason is that ordinary robots, based on cost and technology considerations, will not integrate additional sensors to sense external special situations (such as sudden touches). They will only be "stupid" and have to follow the human program It moves for a day, unless an external signal tells it to stop. So a common solution is to equip the robot with a cage. When the cage door is opened, the robot will automatically pause after receiving the signal.
The consideration of safety naturally brings a lot of additional costs to the robot integration. The cage may not be expensive, but after all, it is necessary to carefully consider the layout of the production line, increase the area of the production line, change the way of man-machine cooperation, etc., thereby affecting production effectiveness. Therefore, industrial robots that have received more attention recently are "proud" of being able to work with people safely, such as Rethink Robotics' Baxter, Universal Robots' PR series, and many traditional industrial robot giants (abb, kuka, Yaskawa, etc.) Concept semi-finished robot. From the perspective of industrial demand, after traditional industrial robots have solved the automation requirements for precision, speed, and weight, it is indeed time to start to meet the safety cooperation between man and machine.
4. Ease of use
The nature of the work of traditional robots is to continuously walk one by one path point, while receiving or setting peripheral I/O signals (old and other settings such as fixtures, conveyor lines, etc.). The process of guiding the robot to do so is robot programming. Almost every leading company has its own programming language and environment, which requires robot operators to participate in learning and training. When the scope of robots expanded, this cost began to appear.
These manufacturers have reasons to maintain their own programming environment. First, industrial robots began to scale up forty years ago. At that time, there was no object-oriented and mainstream advanced programming concepts that are now widely known and generally recognized. At this stage, its own technology will inevitably be different from its competitors, and it is understandable to maintain a programming method. Thirdly, because their major customers are often traditional industrial customers, such as major automobile manufacturers. These customers are seeking stability and naturally do not want you to robot for a few years. Just catch a craze to change programming methods, so that they have to throw away decades of experience and spend a lot of money on training and learning.
Of course, in the industry, everyone has long been thinking about whether programming can be done intuitively and simply, but in traditional manufacturers, except for conceptual displays (such as using exoskeleton, 3D images, virtual reality, iPhone, etc.), there has been no commercial utility. Progress, so that everyone feels vomiting after hearing keywords such as "simple programming".
But fortunately, some latecomers dared to challenge and made achievements from scratch and became a recognized selling point. Yes, I’m talking about Rethink Robotics and Universal Robots! This also vividly demonstrates why disruptive technologies in the dilemma of innovators often do not succeed in leading companies (although they have sufficient resources), but they are always challenged by later challengers. Carry forward. Because every time the leader takes a step farther in disruptive technology, he is often a step away from his iron rice bowl, and there are great internal and external resistance!
Regardless, the ease of use of robots is beginning to be valued. How to enable people to play with robots as quickly as playing iPhone without any (or too much) training has become a direction for large manufacturers to start investing heavily. .
5. Intelligence
The reason why the intelligent type is the last point is that it is not the most urgent for the time being compared to the mainstream demand for robots in the market (that is, strong, fast, and accurate). This also reflects the advantages and disadvantages of traditional industrial robots (work hard without complaining, quality and quantity, a good "worker") and shortcomings (but very "stupid" and too old to teach).
But it does not mean that the smart type is not important. On the contrary, companies have already begun to invest in technology. For example, how to make the robot better understand human command intentions, and to understand and plan tasks relatively autonomously, without having to click one point by one to let people tell it how to go; how to make the robot change in the peripheral environment (the light becomes dark Affect the image recognition, the items on the conveyor belt need special treatment) automatic adaptation; how to judge the assembly quality of parts through tactile, visual and auditory perception, etc.
In summary, before investing heavily in robots, careful consideration should be given. The main purpose of this article is to clarify the aspects that should be considered before implementing industrial robots in a manufacturing environment