- Underestimating Payload and Inertia
The number one mistake in robotics is underestimating payload and inertial requirements. This is usually caused by not including the weight of the tool at the end of the manipulator when calculating the load. Secondly, the cause of this error is the underestimation or neglect of the inertial force generated by the eccentric load.
Inertial forces may cause overloading of the robot axes. In robotics, overloading of rotating axes is common. If this problem is not corrected, it will also cause damage to the robot. Reducing the load or reducing the speed parameter can deal with this situation. However, reducing the speed will increase the cycle time, and as a return on investment, reducing a portion of the cycle time is the first in the purchase of robots. This is why load-related factors have been taken into account from the very beginning.
The effective load is very important. Some information given by the technical parameters of common robots has detailed instructions. The rated load is only effective at the rated speed. One of the important conditions for reaching the maximum load is to reduce the robot’s operating speed. In addition, , Excessive loads may also damage the precision of the robot.
- Lack of correct robot knowledge reserves
Robot manufacturers and system integrators usually design a robot cell for only one application, but if the user does not have a reserve of robotics knowledge, they may face failure. The usage time of any equipment is closely related to how users use and maintain the equipment. It is not uncommon for some first-time robot users to refuse training. The crucial condition for the robot to continue to work normally is to fully understand the robot’s capabilities and to use them optimally within the scope of work.
Industrial robots are very special equipment, and their operation complexity is no less than that of a CNC machine tool. Similarly, the use of robots requires familiarity with the basic knowledge of safe operation of industrial robots, otherwise it is very unsafe for equipment and people. Robot users must participate in the safety operation training of the manufacturer’s system before they are allowed to work.
- Ignoring the related equipment of the robot application
Teach pendants, communication cables, and some special software are usually required, but can easily be forgotten during the initial order. This will lead to delays and over-budget of the entire production plan. When choosing robot-related equipment, you must consider your own comprehensive needs. A very common situation is that customers sometimes fail to integrate some key equipment and robots in order to save money, such as related equipment and software that need to be configured for the project. During the procurement process, the related products ordered are considered in accordance with the requirements of the project.
- Over or Underestimating Robot Control Systems
Underestimating the capabilities of the robot control system will result in repeated system investment and over-budget costs. It is very common to use double backup on safety circuits. Excessively overestimating the capabilities of the control system will result in additional equipment costs, rework, and lost work costs, etc. Trying to control too many I/O ports and adding servo systems is a common misunderstanding.
Safety control is a very important issue. While considering safety, it is also necessary to optimize the safety logic signal of the application as much as possible. The repetition in the program is unnecessary.
- Questions to consider before choosing a robot
After considering the application of each scene, when the system is installed, you can determine whether the application is what you need, and avoid serious overload due to possible errors.
In addition, the working schedule of the robot is also one of the issues to be considered. The determination of the stroke should not only be determined according to the stroke of the robot’s technical parameters to determine whether the requirements can be met. It should be considered whether the trajectory of the robot after the end effector is installed can reach the required stroke. This is also one of the key reasons for simulating.
In different environments, there will be customized industrial robots. For example, the spraying industry needs industrial robots with explosion-proof capabilities, which are different from standard robots, as well as the use of clean rooms and so on. In addition, the reliability of the robot and its defect rate, power consumption, etc. are all issues that must be considered when selecting.
