ПРОЕКТИРОВАНИЕ ОПТИМИЗИРОВАННОГО ПО МАССЕ УЗЛА НАВЕСКИ АГРЕГАТА С КОМПЕНСАЦИЕЙ ГОРИЗОНТАЛЬНЫХ ПЕРЕМЕЩЕНИЙ ТОЧКИ КРЕПЛЕНИЯ НАВЕШИВАЕМОГО АГРЕГАТА

Abstract

During the machining of workpieces of parts, two negative factors act: firstly, under the action of cutting forces, elements of the technological system are deformed (machine - tooling - tool - workpiece), which leads to distortion of the geometric parameters of the finished part; secondly, under the influence of heat generated during machining, the technological system, in particular the workpiece and cutting tool, are heated, changing the shape and dimensions of the part and the physicomechanical properties of the materials of their surface layers. Analytical methods allow calculating elastic deformations and stresses in products (blanks) having a simple geometric shape, for example, cylindrical. The analytical solution is difficult if the product has a complex shape, for example, the shape of a stepped shaft having conical and radius surfaces and holes. The impossibility of a priori determination of the distribution densities of heat flows between contacting objects, the need to take into account the temperature dependence of the thermal properties of the contacting objects and the mechanical properties of the workpiece material, creates serious difficulties for the analytical determination of the temperatures of these objects. However, these problems can be solved numerically, in particular, by the finite element method (FEM). One of the most powerful software products designed for this purpose is the Advanced Simulation module of the NX software package. The aim of the article is to instill in students the skills to solve practical problems that arise during the design and study of technological operations and the processes of machining workpieces of machine parts using the NX software package.