Improving the Manufacturing Accuracy of the Profiling Machines

This paper presents the results of theoretical and experimental researches carried out with regard to the optimization of the dynamic behavior of a CNC laser cutting machine, in terms of cutting precision, for the case of flat metallic parts whose contours comprise right angles and which a profiling machine has to process continuously, without stopping in the corner points. It is aimed especially at detailing the influence of the numerical control equipment's setup on the size of the contouring errors and on the smoothness of the movement, factors that have a direct influence on the accuracy and that have been less addressed until now. The theoretical researches indicate that it is best to use amplification factors of different sizes on the two main plane movement axes. Beneath confirming this, the experimental researches also indicate a beneficial effect of including a feed-forward controller in the structure of the numerical control equipment.