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Workshop hydraulic press
Simandl, Tomáš ; Štěpánek, Vojtěch (referee) ; Omes, Jiří (advisor)
This work deals with design of workshop hydraulic press, which is used for basic forming and assembling. In this work will be shown basic principes and dimensions of hydraulic presses, It will show categories of hydraulic presses based on technology of use. We will design hydraulic press adjustment, hydraulic parts and frame of the hydraulic press.
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Design of the dilatation pad for linear encoder
Moravanský, Richard ; Hadraba, Petr (referee) ; Štěpánek, Vojtěch (advisor)
The bachelor’s thesis deals with the issue of linear length sensors, their dividing, construction, temperature effects and design of an dilatation pad. The aim of the work is a professional search on the topic of linear length sensors, design of variants of the pad and the associated recommendation for practice. The chapter of current knowledge is dedicated to basic knowledge about position sensors, ie. converter sensor connection types. The following chapter is about the description of the basic parts of linear systems, specifically the method of drive and lead in linear systems. After clarifying the concepts, the chapter of linear length sensors will be explained. The chapter deals in more depth with position measurement in linear systems, photoelectric sensing, and a linear encoder from HEIDENHEIN. As the last part of the theory, the analysis of thermal effects is presented. The practical part describes the design of variants of dilatation pad and assembly of elements that allow expansion, their connection and clamping. In the final part, the best variant and recommendation for practice is suggested.
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Using machine vision for robot guidance
Gábik, Jaroslav ; Štěpánek, Vojtěch (referee) ; Vetiška, Jan (advisor)
With the development of machine vision technologies, new applications that can increase production, versatility or simplicity of production systems are widely spread. This thesis deals with usage of machine vision for robot guidance. The task consists of creating a technique and its practical realization, where the proposed assumptions are verified. The main objective is to determine 3D position and orientation of a sheet metal part or subassembly of the body-in-white, which is lying within the reach of an industrial robot with respect to its base coordinate system. The proposed method is suitable for several types and dimensions of components, which meet certain requirements. Targeting the component is carried out by scanning significant points on the component with the help of the 3D scanner attached to the robot flange. Afterwards, gained data are processed in a designed programme. The theoretical part is focused on research in the field of machine vision, accuracy of industrial robots, compensation of their errors and manipulation and assembly of the sheet metal parts in automotive. Finally, an evaluation and recommendations for practice are provided.
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Welding robotized workplaces with emphasis on welding aggregates
Lukšíček, David ; Štěpánek, Vojtěch (referee) ; Knoflíček, Radek (advisor)
The purpose of this bachelor’s thesis is to mention basics and principles utilized in ro-botic welding. Beginning of the thesis is dedicated to introduction of automation androbotization , followed by short definition of welding and it’s development. Main partsof industrial robot are described in following chapters. Crucial stage of the thesis is tolist usual technologies used by robotic welding, to define robotized welding workplace anddescription of it’s essential components. The conclusion of the thesis contains research ofactual welding supplies and wire feeders, including relevant parameters comparison
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Thermal effects in machine tools
Fikejsl, Ondřej ; Štěpánek, Vojtěch (referee) ; Hermanský, Dominik (advisor)
This bachelor’s thesis is specialized search dealing with thermal effects in machine tools and then their compensation. This work is divided into three main parts. First part explains the basic terms and temperature sensors that can be used to measure thermal errors. Second part deals with the thermal influences acting on machine tool, as well as the methods of their compensation. Last part analyzes the specific part of the machine tool including the examples from the manufacturers and their methods of preventing the above-mentioned thermal effects.
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Construction of a single-purpose machine for automatic testing of pneumatic fittings
Tejkl, Michal ; Štěpánek, Vojtěch (referee) ; Tůma, Zdeněk (advisor)
The subject of this diploma thesis is the design of a single-purpose machine for automatic testing of pneumatic fittings. Pneumatic fittings used in brake systems are subject to high technical requirements and 100% tightness control in production. In this case, manual testing is not effective and the goal is to automate the process. The theoretical part presents pneumatic mechanisms, analysis of the tested pneumatic fitting with technical parameters, the possibility of tightness testing, use of sensors, and rotary tables. In the practical part, a systematic analysis of the problem was performed, according to which the overall design proceeded. Subsequently, the design of the complete machine containing individual nodes is processed, supplemented by the necessary calculations. The conclusion of the thesis contains an evaluation of the whole project.
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Mathematical model of load workplace for rotating electrical machines
Rybnikář, Petr ; Štěpánek, Vojtěch (referee) ; Pruša, Radomír (advisor)
This work deals with the creation of a mathematical model of load workplace for rotating electrical machines. The first part provides a general description of servomotors and their mathematical equations. The second part describes the commissioning and connection of the PLC to the inverter and the subsequent creation of PLC programs. The last part describes the creation of the PMSM model with its control and then verified the validity of the model and the real machine.
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Virtual commissioning of the machining workplace
Valach, Tomáš ; Štěpánek, Vojtěch (referee) ; Bražina, Jakub (advisor)
This diploma thesis deals with virtual commissioning of production system for robotic milling, which is located in the laboratories of the Institute of Production Machines, Systems and Robotics at the BUT. In the theoretical part of this thesis is described the issue of virtual commissioning, uses of robot systems in milling operations and software usable for virtual commissioning. Practical part of the thesis contains description to creating CAM operations, the creation of 3D model of workplace and PLC program and its HMI. Programs Fusion 360, Robot studio 2021, TwinCAT and OPC UA were used for the actual implementation.
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Design of a mixing vessel
Udatný, Martin ; Štěpánek, Vojtěch (referee) ; Hermanský, Dominik (advisor)
The content of this bachelor thesis is to present the mixing process and design of mixing vessels for the pharmaceutical and chemical industries, then to design mixing vessles from specified parameters. The stirrer is driven by an electric motor and can operate at variable speeds. The main calculations in the design are the calculation of the power input of the stirrer and the control of the stress on the stirrer shaft. The design is complemented by a CAD model and drawing documentation.
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