Vibration isolation technology
Anti-vibration Technologies that Support the Quality of Machine Industry and Comfort of Lives
"Anti-vibration" is a process that prevents vibrations created by machines and equipment (vibration sources) from being transmitted to external objects such as the floor and walls. This anti-vibration performance occurs when vibration sources, such as vibrating machines, are insulated from outside by supporting them with elastic materials.
Principles of Anti-vibration and Transmissibility of Vibration
Anti-vibration rubber mounts are used when providing vibration prevention support to vibrating machines or to precision equipment to prevent the transmission of vibrations from outside.
Fig. 1 Anti-vibration model
As shown in Figure 1., when the force transmitted to the foundation is F if the machine is supported with an anti-vibration rubber mount and the force is Fo if it is not supported with any anti-vibration rubber mount, the transmissibility of vibrations Tr can be calculated using the following formula (1).
Formula (1) Vibration transmission, Formula (2) Frequency ratio
Figure 2 shows the graph of Formula (1). If the frequency ratio is √2 (approx. 1.4) or greater, the transmissibility of vibrations will be 1 or smaller, meaning that it has a certain level of anti-vibration effect.
Fig. 2 Correlation between transmissibility of vibration and frequency ratio
Technical documents related to anti-vibration technology
You can download the technical documents related to anti-vibration technology, including designing procedures for anti-vibration rubber mounts, in the form of PDF files.
Anti-vibration rubber mount
Selection of spring constants in 3 directions, vertical, horizontal and back and forth using 1 anti-vibration rubber mount. It features excellent internal damping performance, small vibration amplitude when resonating with equipment, etc.
It also has high contour design flexibility, therefore, it is easy to mount the anti-vibration rubber mounts by adhering metal parts.
These rubber mounts can be used simply by placing them on the floor to prevent vibrations, shocks and noise of machines and equipment. The adjustment of levels of hand type mounts is simple. It has excellent oil-resistance and durability as a unique rubber compound is used.