Пристрій з електрогідравлічним слідкувальним приводом для обкочування нециліндричних заготовок

Abstract

In the master's qualification work the design and simulation of the device with the electrohydraulic tracking drive for obcation of non-cylindrical billets was made and conducted. The paper analyzes known methods of surface plaster deformation processing and design schemes of the corresponding technological equipment, evaluates their positive aspects and disadvantages, it is proposed to use for the maintenance of the stability of the peeling force an electrohydraulic tracking device with a main feedback on the differential pressure in the working cavities of the hydraulic cylinder. The constructive scheme of such a device and its mathematical model are developed. The simulation study of the device in the MATLAB Simulink environment was conducted, its dynamic characteristics and the selected rational design parameters were obtained. The design (assembly drawing) of the leakage device is developed. The technological process of mechanical processing of the workpiece of the details of the «Hydraulic cylinder body» type is developed. Two variants of technology of mechanical processing are offered, their technical and economic comparison is made, the optimum variant is chosen. Performed dimensional-precise modeling of the technological process of machining. Selected assumptions for mechanical processing, cutting modes, time standards, and installed grades of machine-tool workers. The basic elements of the machining section are calculated The economic calculations have been carried out, which confirmed the feasibility of introducing an advanced technological process of mechanical processing of the workpiece of the «Hydraulic cylinder body» part, determined capital investments, profit received, payback period of investments. Work on occupational safety and emergency measures has been developed.