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Virtual commissioning of a robotic production system for arc welding
Broniš, Martin ; Tůma, Zdeněk (referee) ; Vetiška, Jan (advisor)
This bachelor's thesis deals with the virtual commissioning of a robotic welding station. The first part describes the current knowledge in the field of industrial robot programming, virtual commisioning and welding. In the second part, a 3D model of the clamping fixture is created, then a model of the welding station is created, and at the end, the welding paths are created and the station si virtually commisioned.
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Tool design for production of springs for an organ
Svoboda, Jakub ; Osička, Karel (referee) ; Kalivoda, Milan (advisor)
This thesis focuses on a design for a machined bending fixture to enable the production of valve springs for organs. The reason for choosing this topic was the need to perfect the existing process of making organ springs. The main problem with the original fixture was the poor quality of the spring thread. Valve springs have varying properties and parameters that determine the requirements for the fixture. A 3D model of the complete fixture was created based on the author’s ideas and these requirements. Calculations were then made for a spring of specific dimensions. These calculations showed that the proposed size of the crank is adequate to enable it to be turned by the human hand. A force of 28 N is required at the end of the crank arm to exert the bending torque required to properly thread the spring. This figure is lower than the tabular values for the general European working population. This implies that the crank arm has the designed proportional length. To calculate the same specific spring and verify the function of the fixture, software simulation was also used. When creating the model, in addition to the calculations and simulation, an experiment was also conducted to verify the function and the main idea of the fixture, which is to bend with additional tensile stress. The result of the experiment was a spring that was subsequently compared with a spring produced using the original fixture. The marked difference in the appearance of the thread proved that the author’s idea was correct. The entire fixture and its components are described in detail in the thesis. The comprehensive design of the fixture in the form of a 3D model is prepared for consultation in an organ-making workshop and then for use in production.
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Design of a milling fixture for four-axis CNC trimming of composite parts
Hibš, Dominik ; Slaný, Martin (referee) ; Zouhar, Jan (advisor)
This thesis deals with the design of a milling fixture for trimming of folding propellers for the company Mejzlik Propellers s.r.o. Firstly, an adequate HAAS DM-2 machine and UniCut Dron milling tool were selected. The cutting force was then quantified at 9.2 N. Once the cutting force was established, the clamping surface could be designed and the clamping force set at 317.3 N. After considering several fixture options, the final design was selected. The selected design was used to program the CNC machine in Fusion 360. A technical and economic evaluation followed, when the total price of the product was 41,671 CZK and the cost of machine cutting one propeller was 32.60 CZK, while the cost of manual trimming was 29.10 CZK
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Construction of equipment for thin walled L-profiles instability testing
Polčák, Marek ; Vaněk, František (referee) ; Horák, Marek (advisor)
Bachelor’s thesis deals with the loss of stability of axially loaded thin-walled aluminium profi-les, which make up an important part in the aircraft structures. The loss of their stability is tes-ted by the compression test, which is used to determine the buckling load. Compression test may be influenced by many factors, which are related to the fixing to the testing machine. The aim of the thesis is to design a fixture, which would fix a specimen to the testing machine and improve the results of the test.
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Design of NC hydromechanical vise
Václavek, Marek ; Pavlík, Jan (referee) ; Tůma, Jiří (advisor)
This thesis focuses on design of a machine vise with a hydromechanical clamping force multiplier. The thesis is split into three main sections: study of workholding methods and fixtures with emphasis on vises, introduction and explanation of the proposed design and necessary calculations for the proposed design.
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Design of a Robotic Cell for a Steel Frame Welding
Kysela, Martin ; Kubela, Tomáš (referee) ; Pochylý, Aleš (advisor)
The aim of this diploma thesis is to design a cell for robotic arc welding of steel frame. Three possible solutions are provided and one of them is to be chosen to work out. Construction designs of fixture, machine guarding and material racks were created and devices and components required for cell functionality were chosen. All of that with regard to the safety of workplace operators.The result is 3D model of welding cell, it´s implementation and virtual commissioning in the simulation software Process simulate. We will verify the weldability of assigned part, find out the production cycle, eliminate error and lastly the technical and economic evaluation will be work out.
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Rationalization of segment production of the forming tool
Pilař, Radek ; Kalivoda, Milan (referee) ; Osička, Karel (advisor)
Master thesis is focused on the rationalization of production of the forming segment, which is manufactured by company OMNI-X CZ. Familiarization with the product „forming segment“, with issue of production with possibility improvment. The work is also focused on the preparation of the clamping fixture, which should improve the production conditions. The main point of the work include the calculation of cutting forces, clamping forces of the fixture, verification of safety process with economic evaluation. The aim of this master thesis is to indicate the possible direction of the rationalization of the manufacturing of the shaping segments for OMNI-X CZ.
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Optimization of Vehicle Semi-Trailing Arm Suspension
Vávra, Radek ; Blaťák, Ondřej (referee) ; Hejtmánek, Petr (advisor)
This thesis is concerned with the design of Škoda 130 RS rear Semi-Trailing Arm Suspension and fixtures on the body. The main requirement of this thesis is to reduce weight of suspension. It is carried out the kinematic analysis and optimization of the kinematic. The construction part of this thesis provides a design of suspension based on the analysis of forces acting on the car wheel. Last part of the thesis includes of new rear suspension stress analysis.
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Design of a simulator module for analysis of friction and wear of teeth during cleaning
Snopek, Lukáš ; Streďanská, Alexandra (referee) ; Vrbka, Martin (advisor)
This thesis focuses on the design of a module for the tribological simulator Bruker UMT TriboLab, which will be used in research in the field of analysis of wear of hard dental tissues and filling materials due to tooth cleaning. The aim of this work was the design of experimental conditions, module construction, creation of drawing documentation, production and subsequent implementation of a validation experiment. The conditions of the experiment were determined on the basis of research and to create an optimal design solution, prototypes were continuously produced using the 3D printing method. Finally, two toothbrush fixtures and two dental filling sample fixtures were made based on the drawing documentation. Subsequent assembly of the fixtures and the implementation of the experiment on the tribometer verified their functionality, which makes it possible to declare all the goals successfully met. Now these fixtures will be part of several research tasks in the field of oral biotribology.
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