A machine train is a set-up of more than two rotating machines that are connected to each other. A typical machine train application is a motor which drives machinery with a gearbox in between.
When alignment is performed on machine trains, adjustment of one machine will directly affect the alignment of the other machines. Before making any adjustment in a machine train, it is important to know the relative position of each machine in the train. When this is known it is easy to get an overview of the machine train to see which adjustments are needed to align all the machines.
The amount of adjustment needed depends on which machine in the machine train is selected as the stationary machine. In many cases there are also restrictions to the amount of adjustment due to base or bolt bound conditions, which influence the choice of the stationary machine.
The machine train program in Fixturlaser NXA is especially designed to quickly provide an overview of the position of each machine and to determine which machine should be chosen as stationary, in order to optimize the work with adjustments.
Functions in the program make it possible to align machines to target positions, i.e. Target Values, and to calculate the minimum amount of adjustment to align the entire machine train.
Once the stationary machine has been chosen, the alignment of the rest of the units is performed by using the program for horizontal machines. See also chapter “Shaft Alignment Horizontal Machines”.