FEATURES OF MANUFACTURING TECHNOLOGY FOR THIN-WALLED PARTS

Abstract

In Russia, there is a tendency to revive the machine tool industry. From here, research in the field of mechanical engineering technology becomes relevant. The most popular research in the field of mechanical engineering technology is research on improving the manufacturing technology of thin-walled parts based on more reliable calculations. Axisymmetric thin-walled parts are very widely used in mechanical engineering, and they can be divided into rings and shells depending on the ratio of length to diameter. The objects of research in the article, which is staged in the cycle of works, are rings. The review and analysis of devices for installing thin-walled parts and methods for calculating errors from the action of fixing forces and cutting forces showed that standard cartridges are most often used for installing rings, and in the calculations of fixing forces are assumed to be concentrated (applied at a point). The work offers special devices–mandrels with wide cams, which are advisable to use when installing rings in mass production. The rings have a tolerance for the diameter of the base hole, which is intended to be used in the study. The purpose of the study is to develop an engineering method for calculating the shape error in the cross section of a thin-walled ring fixed by three wide mandrel сams, taking into account the width of the contact area and the initial radial gap between the diameter of the workpiece hole and the diameter of the working cylindrical surface of the cam. The tasks that will allow you to achieve the goal, the initial data, and a number of assumptions to simplify the study are identified.