The tool change point of a five axis CNC Machining center refers to the orientation of the tool holder during automatic indexing. Most five axis machining centers have arbitrary tool change points, which should be selected in a direction that does not interfere with the workpiece or fixture during the tool exchange process.
Of course, there are also some machining centers where the orientation of the tool change point is a fixed point. Usually, the tool change point is selected near the reference point of the machining center, and these points are selected near the reference point of the machining center. Perhaps the second reference point of the five axis machining center is used as the tool change point.