Wilkinson Dynamic Balancing present an overview of the forces involved in calculating the forces in play when balancing rotating masses.
A component of mass ‘m’ rotating at a constant velocity from a distance ‘r’ from the axis of rotation is subjected to force mr2. These forces increase and introduce stress in a rotating machine. Additionally, these forces bring about bad vibrations that may cause structural failures and unacceptable noise. These problems may limit operation speed and overall performance of a machine. In case you are running a manufacturing plant, these imperfections are rampant and can impact negatively on the productivity of your firm. The center of mass and the center of rotation do not coincide well and may cause mass imbalance.
Balancing of rotating masses is a technique that most manufacturers use in overcoming the problem. It is critical especially if you want to create an energy efficient machine. The heat and noise produced are just but a waste of energy. It is because the energy is not directed to where it is needed. Due to the limited supply of energy sources, there has been a growing demand for energy efficient production equipment. Several machines and home appliances are now designed with Energy Star.
Moreover, extra balance can also be added to a rotating system to cancel residual imbalance in a machine. There are two different types of balancing i.e. static and dynamic. Static balancing, however, may not be reliable as it does not give an indication of the actual position of bias in axial length. The center of gravity does not come in line with the axis of rotation, and the wheel turns and moves the center of gravity below the center of rotation. Therefore, when a rotor is running at high speed, the effect of imbalance is experienced. Such imbalances can be hard to identify and can cause severe damages. Adding small masses to the opposite side of the center of gravity can help correct static imbalances.
Dynamic balancing is used in recording and indicating devices to show the extent and position of the unbalanced mass. Dynamic balancing consists of aligning the axis of rotation with the axis of inertia. In both cases, a high rotating speed even if the mass is low cause higher rotating force and torque. By carefully considering the accuracy and the design of a machine, it can be easy to correct various imbalances that cause performance issues.
It is paramount to balance a rotating device both statically and dynamically to eliminate common performance problems such as vibrations, noise, and heat which may cause system failure.