Laser cutting machine and optimisation of input parameters for fruition required quality of products

Abstract

The paper depicts the process of cutting sheet metals by the laser machine TRUMATIC L 4030 and indicates the possibilities of machine control based on the roughness measurement. It points out the importance of correct adjustment the input parameters of the laser machine at cutting sheet metals from unalloyed structural steel. The quality of cutting edge depends mainly on its input parameters (the speed of cutting jet, the distance of the jet from the material, power of laser and its pulse frequency or gas pressure). The control system generates suitable parameters by means of technological tables. With respect to various influences (outer, inner, material, technological...) which intervene into the production process, the output quality of the cutting edge cannot be guaranteed. It is possible to raise the quality of production by measurement of the roughness parameters, their estimation, comparison to required values and next intervention - optimisation of input parameters of the machine.