This article presents an attempt at technological innovation of a digitally controlled machine-tool simulator. It is concerned with the effects of this training in order to optimize not only the technical process but also the training. The work has been carried out by a team of researchers in mechanical engineering and educational science. The starting point is the question of skills, dealt with in the context of technological training from the point of view of the activities. The initial results are presented and analyzed, which opens up a promising field of research.