Multi plane balancing

Multi plane balancing

Multi plane balancing also referred to as Dynamic balancing method this occur when there is no resulting turning moment along the axis.

This type of unbalance can only be measured on a rotating balancer since it includes couple unbalance. Since dynamic unbalance is a combination of static and couple unbalance and since static and couple unbalance have different units, there are no unique units for dynamic unbalance. It can be expressed as static and couple or in terms of the balance corrections required.

Two-plane balancing is an operation where balance corrections are made at two locations or planes on the coupling axis. These locations must be well separated to effectively produce a two-plane balance. This separation makes part length a prime factor in determining whether single-plane or two-plane balancing is required. Generally, the longer a coupling or component is relative to its diameter, the greater the possible need for two-plane balancing. In two-plane balancing, the unbalanced particles or masses do not lie within a narrow plane; instead they are spread along the length of the coupling. For example, a coupling consisting of two elements and a floating shaft could be represented as two disks spaced on a shaft with each disk rotating. If both disks are perfectly uniform, then each of their centers of gravity would be located on the center of rotation. They will therefore spin with no vibration and will be in balance.

Plane Dynamic balancers are not as common as single plane static machines due to the nature of vertical balancing, but if the application suits 2 plane dynamic balancing on a vertical balancer then the advantages can be made over horizontal dynamic balancing such as rapid component loading / unloading and correction can be easier actually on the machine when a drill, mill or weld head is integrated.