In order to improve a
simulation system for representing actions of
machining units of a
machine tool, in particular actions in the
machining of a workpiece, in accordance with a CNC
machining program complex by means of at least one first
visualization unit in the form of actions of
virtual machining units of a
virtual machine tool, comprising an
action control, which has at least one first
data processing unit, which establishes control commands for actions of the
virtual machining units by a control program
processing CNC blocks of the CNC machining program complex, and a
visualization control, which has at least one second
data processing unit, which represents actions of the
virtual machining units on the first
visualization unit by a visualization program on the basis of configuration data of a stored
machine model and the control commands determined by the
action control, in such a way that it can be operated more easily, it is proposed that the
simulation system comprises an operating control with a third
data processing unit, which operates the
action control by an operating program, and that the operating program has a
program management function, which transfers at least program parts of the CNC machining program complex in a workpiece-related manner from said CNC machining program complex stored in a memory of the third data
processing unit to the action control for executing said program complex.