Misunderstanding of industrial robot application - Yamaha Robot

Robots typically cost tens of thousands to millions of dollars, and it's important to make the right choices the first time and prevent common mistakes that can lead to unnecessary expenses or delays.

Myth 1: Underestimating useful load and inertia

The first misunderstanding of robot users in the application is that they underestimate the useful load and inertia needs. Generally, most of the reasons are that the weight of the things at the end of the robotic arm is not included in the calculation of the load. Secondly, the cause of this fault is the inertial force of neglect or negligence of the eccentric load.

The inertial force may constitute an overload on the robot axis. In robots, overloading of the axis of rotation is common. Failure to correct this problem can also cause damage to the robot. Load shedding or speed reduction parameters can compensate for this situation intermittently. However, reducing the speed will add unnecessary cycle time - the cycle time that is part of the reduction in return for the investment is at the top of the list when it comes to purchasing robots. That's why load-related factors are important from the start.

Useful load is very important, some information given by general robot skill parameters, have been elaborated in detail, the rated load is useful at the rated speed, one of the important conditions for reaching the maximum load is to reduce the speed of the robot, and other excessive loads may also destroy the accuracy of the robot.

Misunderstanding of industrial robot application - Yamaha Robot

Misunderstanding of industrial robot application - Yamaha Robot

Myth 2: Trying to make the robot do too much work

Sometimes, the robot's talent and flexibility lead the planner to take on too much work, resulting in too much clutter in the robot cell. Once this happens, it's hard to get the cycle time right, and it can be a nominal difficulty for the solution, which can lead to a lot of difficulty due to processor speed limitations. And once the production is faulty, this fault is often magnified. In production, the shutdown of non-solutions will lead to huge losses.

In other cases, the use of robots and work cells exceeds the talent requirements of the original plan. When jobs are added after the simulation, it's a desperate situation. In particular, if a new simulation is not done before the scheme is promoted, the regular cycle time may not be met. Therefore, in order to ensure that the cycle of the robot is within the specified time, it is necessary to be very careful about the work beyond the scope of the robot's ability.

Before using the robot, it is necessary to go through imitation and simulation, and determine the stroke load and cycle time of the robot according to the plan. If you add a new application of the robot, you must first verify it before entering.

Myth 3: Ignoring the handling of cables

As simple as it may seem, or perhaps because it seems too simplistic, the cable handling is often overloaded. However, optimizing the path of the cable or peripheral to the end of the robot arm is important for the movement of the robotic device. Lack of an estimate of potential problems will result in unnecessary maneuvers by the robot to prevent cable entanglement and compression. In addition, if dynamic cables are not used, the pressure on the cables may be reduced, which may lead to damage to the wires and downtime.

At present, the end-effector of the robot in use is generally gas-driven or electrically driven, and it is inevitable that there will be corresponding air pipes or cable connections. Most of the industrial robots' gas circuits and electrical circuits are outside, so you should be quite careful when the robot is controlled by movement; There is also an industrial robot with built-in gas and electrical circuits, which is very convenient, as long as the relative movement of the arm and the end actuator is considered.

Myth 4: Questions that should be considered before choosing a robot system

After considering each application, when the system is in place in the future, you can be sure that all aspects of the application are what you need and prevent serious overruns due to possible faults.

In addition to these, the robot's work trip is also one of the issues to be considered. When the stroke is punctual, it is not only according to the stroke of the robot's skill parameters to determine whether it can reach the requirements of the application, but also whether the movement trajectory of the robot may reach the required stroke after the end of the actuator device. This is one of the key reasons for imitation simulation.

As far as the environment is concerned, there will be specially customized industrial robots in different environments, such as industrial robots with explosion-proof capabilities that are needed in the spraying industry, which are different from standardized robots, as well as the use of clean rooms and so on. In addition, the reliability of the robot and its fault rate, the power consumed, etc. are all issues that must be considered in the selection.

Myth 5: Misunderstanding of accuracy and repeatability

An accurate machine is repeatable, but a repeatable machine does not necessarily have accuracy. Repeatability refers to the exact round-trip between the established directions according to the specified work path of the robot.

Accuracy is expressed by following the exact movement of the job path to an accounting point. In the handling action, the robot moves to the direction of some established points after accounting, and the accurate function of the robot is used. Accuracy is directly related to mechanical endurance as well as the accuracy of the robot arm.

Accuracy and the mechanical accuracy of the robotic arm has a great relationship, the higher the precision, in order to ensure the accurate high speed, the robot reducer is an important key structure to ensure the accuracy of the robot.

Myth 6: The selection of the robot system only depends on the quality of the control system

Most robot manufacturers think more about the robot's manipulators than the mechanical functions. However, it is assumed that once a robot is installed, uptime depends primarily on the durability of the machine. It is likely that the loss of production capacity of the product is not caused by poor controllers and electronic equipment, but by poor mechanical function.

Generally, the selection of a robot system is based on the user's knowledge of the controller and software. Assuming that the robot has excellent mechanical functions in this regard, this will be a very competitive advantage. Conversely, if the robot is constantly being repaired in the future of the plant, the time-saving advantage of mastery will quickly be eroded.

The mechanical part is the key to ensure the function of the industrial robot first, and the accuracy, speed and durability are all greatly related to the mechanical part. The organizational composition of the robot is relatively simple, generally the motor and reducer, if the selected robot often needs to repair the reducer part, or other mechanical structures, it is very troublesome.

Myth 7: There is no correct robot common sense

Robot manufacturers and system integrators generally plan a robot cell for one purpose, but if users don't have the right knowledge about robots, they may face failure. The operating time of any production equipment is closely related to how the user uses and maintains the equipment. It's not uncommon for some first-time bot users to reject training. The essential condition for the robot to maintain normal operation is to fully understand the robot's talents and use them optimally within the scope of the operation.

Industrial robots are very special equipment, and their operation is no less chaotic than a CNC machine tool. Similarly, the use of robots requires understanding the basic safe operation of industrial robots, otherwise it is very unsafe for equipment and people. Operators who use robots must be trained in the safe operation of the system by the system manufacturer before agreeing to the actual operation.

Myth 8: Ignoring the relevant equipment used by robots

Teach pendants, communication cables, and some special software are generally necessary, but they are simply forgotten in the initial order. These would lead to delays and even cost overruns for the entire programme. When choosing the right robot product, you should first consider all aspects of your own needs and satisfactory equipment selection. It's not uncommon for customers to save money by not integrating critical equipment and robots.

At the beginning of the project, it is necessary to understand the relevant equipment, software and other contents required for the project. During the procurement process, it is necessary to take time to consider the relevant products ordered according to the application of the project.

Myth 9: Too high or too underestimated robot control system ability

Underestimating the ability of the robot to control the system will lead to duplication of investment and unnecessary waste. The use of double backup in the safety circuit is very ubiquitous. However, it is a common mistake to overestimate the control system to cause rated equipment costs, rework and lost costs, etc., and try to control too many I/O ports and add servo systems.

Safety control is a very important issue, and while considering safety, it is also necessary to optimize the use of safety logic signals as much as possible, and the repetition in the program is unnecessary.

Myth 10: I didn't think about using robot skills at all

Limitations on the size of funding, lack of understanding of robotics skills, and past failed attempts to choose robots are reasons for many to stay away from robotics. However, in order to improve productivity and win in the ultimate competition in the market, it is important to disconnect this misunderstanding. Robot skills cannot improve productivity alone, but in many cases they can help improve overall productivity. Market reaction time, added production power, simple handling, flexibility, reusability, reliability, precision, manipulation and long-term service are all reasons for the strength of the robot's skills.

The use of robots is a long-term investment, easy to handle, together with to ensure the yield of products, improve the production rate, and thoroughly automate the use of the factory, naturally also give customers a stable pillar.

Misunderstanding of industrial robot application - Yamaha Robot

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