Finite element calculation of mini-lathe guides

Abstract

In a conventional lathe the guides are attached to the bench, which guarantees rigidity and stability. This research aims to analyze a different variant from the structural point of view, which belongs to a mini-turn manufactured in the Department of Mechanical Engineering of the University of Granma, where the set bench guides is formed by two cylindrical bars. To determine the functionality of the proposed variant, static studies are carried out to verify if they comply with the conditions of resistance and rigidity from a structural point of view. For this, a finite element calculation software was used where the most unfavorable working conditions for the bars were taken into account. The main variables evaluated were the tensions and the displacements, which resulted in values lower than the admissible, so they will not affect the functionality of the guides. Based on the fact that the results of the analysis of stresses and displacements give values lower than the admissible ones, it is concluded that the bars can be used in the mini-turn, since they will not significantly affect the accuracy and rigidity of this.