The goal of this paper is to point out the possibility of occurrence of vibration during milling due to changing depth of removed layer of the material. Growth of values of mechanical vibration in depending on the value of the nominal thickness of the splinter was monitored during changing technological parameters of the milling process due to rotation speed of the engine. The results of the experimental part are values of vibration acceleration amplitude measured by a piezoelectric sensor on the head of the milling machine. Two types of tools have been used for the measurements - a plate and a monolith milling machine and rotation speed and material removal have been changed on the selected device. Based on the analysis of created graphical dependencies a set of new knowledge, conclusions and recommendations is formulated.
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