Research of the equipment dynamics for strengthening long-dimensional round cross-section parts vibrating by plastic deformation
Students Name: Shypka Yevhen Mykolaiovych
Qualification Level: magister
Speciality: Food and Processing Industries Equipment
Institute: Institute of Mechanical Engineering and Transport
Mode of Study: full
Academic Year: 2022-2023 н.р.
Language of Defence: ukrainian
Abstract: The work substantiates the use of plastic strengthening deformation of the surface in the manufacture of machine parts. The method and equipment of directed plastic strengthening vibration-shock deformation of the surfaces of machine parts are described in detail. An experimental research vibration machine for the implementation of this process, which is made of metal and found its practical application, is considered. The work shows the schematic diagram of a run-in machine for processing the internal surfaces of parts by this method. The expressions for determining the impact energy of the run-in on the part and deformation of its surface, and determining the maximum stress of deformation of the surface in the contact zone of the ball and the run-in are derived. Based on them, you can determine the modes of surface treatment by choosing the appropriate parameters of the vibration system and the run-in. The influence of the parameters of the vibration strengthening system on the main factors of the energy-power type is graphically depicted, and the corresponding analysis is carried out. Object of research: an experimental research vibration machine for strengthening long-dimensional parts of a rounded section by vibration plastic deformation The subject of the study: parameters of the vibration strengthening system and factors of the energy-force type of the process of directed plastic strengthening vibration-shock deformation of the surfaces of machine parts. The purpose of the study: quantitative determination of the influence of the parameters of the vibration strengthening system on the main factors of the energy-power type with the aim of their optimization. The first chapter of the work describes the application of methods of plastic strengthening deformation of the surface in the manufacture of machine parts, the classification of types of wear of machine parts and mechanisms is given, and the application of methods of plastic strengthening deformation of the surfaces of machine parts and mechanisms is justified. Types of plastic strengthening deformation of the surfaces of machine parts are also given and the implementation of plastic strengthening deformation processes with the formation of an improved layer of the part being processed is described. The second section of the work describes the structure and principle of operation of the equipment for the implementation of the method of directional vibration-impact strengthening of the surfaces of machine parts. The third chapter of the work describes mathematically the main factors of the energy-force type of the process of directional plastic strengthening vibration-impact deformation of the surfaces of machine parts. The construction of mathematical dependencies was carried out to determine the main factors of the energy-power type.quantitative determination of the influence of the parameters of the vibration strengthening system on the main factors of the energy-force type of the process of directional plastic strengthening vibration-impact deformation of the surfaces of machine parts has been carried out. In the fourth section of the work, an evaluation of the obtained design solution was carried out from the economic side, the planning of the execution of the master’s thesis and a number of relevant calculations were implemented. In particular, the costs of its implementation, operational costs for the obtained design solution are calculated, and the consumption price of the design solution is determined. According to calculations, the term of development and implementation of the project solution will be 93 days. The costs for the development and implementation of the project solution will amount to uah 48,137.19. This project solution can be used for 5 years. The amount of annual operating costs for the project solution will be uah. The daily consumption price of the project solution for the developer organization will be uah 131.83, for the buyer organization it will be uah 133.95. Received design solutions and corresponding studies and their expediency. The economic evaluation of the obtained design solution indicates the economic efficiency of the tasks solved in the work in terms of their further implementation. Keywords: vibration, dynamic parameter, run-in, deformation ball, vibration-impact, directional, plastically strengthening, surface.