This Standard defines a machine coordinate system and machine motion nomenclature for numerically controlled machines. This Standard applies to all numerically controlled machines.

For the sake of simplicity, the majority of the text of this Standard is written in terms which are applicable to machine tools but it is nevertheless applicable to numerically controlled machines in general.

Application

This Standard defines a machine coordinate system and machine movements so that a programmer can describe machining operations without having to know whether the tool approaches the workpiece or the workpiece approaches the tool. The tool moves relative to the coordinate system of the stationary workpiece as defined in Section 4.