Parametric modeling of transverse layout for machine tool gearboxes

Abstract

This article considers the problem of computer-aided design for transverse speed gearboxes layouts of drilling-milling-boring machines on the basis of parameterization methods and means. Models and algorithms of layouts parametric modeling are developed on the basis of maximum rigidity criteria and minimum reduced load on the supports of the spindle unit. A program for determining the optimal spatial position of the gearbox output shaft using the syntax of the CAD APM WinMachine is developed. In the process of constructing the optimal layout, the permissible variants of layouts are checked using the limitations on the minimum distances between the gear wheels and the box housing. A diagram for determining the position of the intermediate shaft and its effect on the level of output shaft loading is proposed. The analysis of the influence of the optimal spatial position of the shafts on the structure of the box housing is carried out. For this optimal version of the transverse layout, a 3D model of the metal-cutting machine gearbox on the basis of the machine SF68VF4 model is developed. The efficiency of using the parametrization apparatus in the problems of multivariate designing of machine tools is grounded.