Study of the planetary mechanical drive of the main working body of the agitator
Students Name: Medvid Kristofer Mykolaiovych
Qualification Level: magister
Speciality: Computer Engineering in Mechanical Engineering
Institute: Institute of Mechanical Engineering and Transport
Mode of Study: full
Academic Year: 2024-2025 н.р.
Language of Defence: ukrainian
Abstract: In this work, the design of the planetary transmission structure is substantiated, calculated and developed. Also, its three-dimensional model is built, and the strength of the structure is calculated. Object of research - planetary mechanism Subject of research - development of the planetary mechanism design, construction of its three-dimensional model, calculations for the strength of the main structural elements using the finite element method. The purpose of the master’s thesis is to develop and substantiate the design of a planetary mechanism using CAD/CAE systems, create its three-dimensional model, and study the strength of its key components to confirm the possibility of reliable operation. The first section of the paper describes the classification of planetary gears and the way they are used. Summarizing the results of research on the effectiveness of using different types of planetary mechanisms, it should be noted that the optimal number of satellites allows to optimize the gear ratio and increase the reliability and durability of the entire structure. The speed and efficiency of the stirrer are improved by the use of modern materials and technologies, such as 40X and 40KhN steel, which retain their strength despite the low weight of the parts. Oil tanks should be as robust, compact, and simple as possible to provide easy access for maintenance while maintaining the transmission ratio and durability. In the second section of the paper, the schematic diagram and concept of the planetary mechanism are developed, and the main structural elements are calculated. The planetary gear consists of a sun gear in the center of the structure, three satellites, and a crown gear. The planetary mechanism also has a mount for connection to the stirrer. The allanetary mechanism is fixed on a stable base, which ensures the stability of the structure during operation. The operation of the stirrer is ensured by the movement of any element of the planetary gear to operate the stirrer in various configurations. Due to the improved design and use of modern materials, the payment mechanism has become much more efficient and reliable. This makes it possible to maintain the agitator’s speed at a high level and for a longer period of time, reduce energy consumption during operation, and increase the reliability and durability of the structure. The versatility and simplicity of the planetary mechanism allows for efficient operation of the agitator and less costly maintenance of the mechanism, which contributes to increased productivity and resource savings. In the third section of the paper, the geometry of the planetary gear was developed, including the construction of a three-dimensional model of the entire structure with subsequent strength calculation of the main components. The modeling was carried out using the FEMAP system and the calculation was performed using the SDC Verifier software. The three-dimensional model of the planetary transmission made it possible to show its future appearance, to automatically perform two-dimensional models of the structure itself and its individual components and parts. A quick change in the three-dimensional model will allow for an automatic change in the corresponding two-dimensional model linked to it. The method of model construction is design, using adaptive relationships between geometric elements of various model parts and parametric modeling. A three-dimensional model can be quickly modified to fit a particular size or design option of the entire structure. This, in turn, makes the model versatile and suitable for use in the development of structures and design documentation for a set of structures of similar purpose. The calculations of the strength of the machine components by the finite element method in the CAE system environment confirm the operational efficiency of the developed design. Keywords: planetary mechanism, satellites, gear ratio, stirrer, three-dimensional model, finite element method.