With the sound of intelligent manufacturing horn, industrial robots have become a beacon for the development and progress of manufacturing industry in the future. More and more enterprises begin to purchase and use industrial robots. It is undeniable that with the continuous progress of robot R & D and manufacturing technology, such equipment can bring more convenience to industrial production, but the premise is that enterprises should know whether they really need robots? What kind of robot is needed? How to use robots? If these three problems are not clear, the use of robots will fall into some misunderstandings. Next, let's analyze the main misunderstandings in the use of industrial robots.
Myth 1: leave everything to robots
After some enterprises have robots, they believe too much in the processing ability of robots, and many of the tasks arranged, from workload to complexity, are beyond the normal use rules of robots. The harm caused by this is great. On the one hand, the increased workload may lengthen the cycle of robot operation, which is inconsistent with the work pace of other equipment on the assembly line, resulting in the normal operation of the whole assembly line. On the other hand, too complex tasks will increase the computational burden of the robot processor, resulting in equipment failures. Once failures occur, unplanned shutdown will be inevitable.
Therefore, when arranging the work for the robot, we must follow the correct operating procedures, especially to determine the travel load and cycle time of the robot application, and the work must not be excessive or too detailed. Before using the robot, we must also go through simulation to check whether it can operate normally and keep pace with the production line. Only after the verification is qualified can it be officially operated.
Myth 2: ignore the tool load and inertia of robots
Well, through the elaboration of the first misunderstanding, robot users already know that when arranging work for robots, they should consider the load they bear, so what misunderstanding exists when calculating the load? Usually, when people calculate the load, it is easy to ignore the weight of the tools installed at the end of the manipulator and the inertia it produces. The weight of the tool and its inertia may cause the robot axis load to exceed the allowable maximum value. This will not only affect the accuracy of the robot operation, but also damage its service life.
There are two ways to solve this problem, one is to directly reduce the load of the robot, the other is to reduce the running speed. However, reducing the running speed will lead to the lengthening of the cycle cycle, and then there is the problem of inconsistent pace of the production line. So the best way is to reduce the payload of the robot. When calculating the payload, reduce the tool load from the total load. Only in this way can the robot work within the allowable load range.
Myth 3: misunderstanding of accuracy and repeatability
Repeatability refers to the precise back and forth movement of the robot between the given positions according to the specified working path. Accuracy refers to the movement of the robot accurately moving to a previously calculated point according to the working path. Repeatability and accuracy are two completely different concepts, which are like the concept of bus and private car. Private car can accurately move to any "point" you want to go, but bus can only go back and forth between bus stops. An accurate machine can be repeated, but a repeatable machine does not necessarily have accuracy.
In the handling action, the robot moves to some established positions through calculation, which mainly uses the precise performance of the robot. The accuracy is directly related to the mechanical tolerance and the accuracy of the robot arm. The higher the accuracy, the higher the speed. In addition, the robot reducer is also an important key structure to ensure the accuracy of the robot.
Myth 4: ignoring the management of robot cables
Some things seem simple, but if mismanagement is easy to cause big problems, such is the cable of robot. Most of the robots and the tools installed at the end of their arms are externally wired, which brings certain hidden dangers to the operation of the robot - the entanglement of the mechanical arm and the cable may occur during the operation. Once so, it will produce unnecessary force on the manipulator and make it make unnecessary actions. In serious cases, the cable may even be damaged, resulting in equipment shutdown.
Therefore, for the external cable of the robot and its tools, its routing path must be carefully optimized to ensure that it does not conflict with the action of the robot. Of course, some equipment cables are built-in, which will cause the above problems and reduce a lot of trouble.
