Перегляд за Автор "Medvedev, Vadym"

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  • Ескіз
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    Manufacturing Process Planning for Production of a Part «Corps that directs»
    (Igor Sikorsky Kyiv Polytechnic Institute, 2024) Abdalla Salah Mahmoud Mohamed Moustafa; Medvedev, Vadym
    Heat treatments are operations involving heating, maintaining the temperature, followed by cooling, with the aim of giving a metal piece the most suitable properties for its use. They allow for a significant improvement in the mechanical characteristics of steel with a determined composition. Generally, a heat treatment does not alter the chemical composition of the alloy but brings about the following modifications: - Constitution (state of carbon and allotropic form of iron). - Structure (grain size and distribution of constituents). - Mechanical properties. The purpose of these treatments is to enhance the characteristics of materials and make them more suitable for a given application, based on the following modifications: - Increase in tensile strength and yield strength (Rem, Re), providing better performance of the element. - Increase in hardness, allowing parts to better resist wear or impact.
  • Ескіз
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    Technological preparation of a manufacturing process to produce a part “Bottom plate"
    (КПІ ім. Ігоря Сікорського, 2025) Muoneke Kingsley Chinoye; Medvedev, Vadym
    This thesis presents the development of a comprehensive manufacturing process plan for a Bottom Plate component used in stamping die assemblies. From the choice of raw materials to the last surface grinding step, the study covers every crucial facet of production. The Bottom Plate's geometry, purpose, and production requirements are examined. Its dimensions are 530 × 400 × 75 mm. A proposed process path includes surface grinding, CNC milling, radial drilling, and vertical milling. Dimensional information, surface finish specifications, and the proper cutting tools are used to support each machining process. To guarantee repeatable accuracy during CNC machining, special attention is paid to the fixture and clamping system design. For the best workpiece location, a hydraulic clamping arrangement with diamond and cylindrical locating pins was chosen (presented theoretically). Tool life, torque, and spindle speed are adjusted to the material properties of carbon steel 3 while cutting parameters and forces are computed empirically. Additionally, established economic models are used to generate estimates of machining time and cost. The outcomes attest to the suggested procedure's cost-effectiveness and technical viability. In the framework of contemporary process planning for precision metal components, this work illustrates the combination of CAD modeling, empirical computations, and fixture design.