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Realization of educational problem based on experimental apparatus with cam mechanism
Tomeček, Vojtěch ; Vrbka, Martin (referee) ; Vaverka, Michal (advisor)
Bachelor's thesis is focused on solving educational problem based on experimental apparatus with cam mechanism. The task of the educational problem is to teach students to analyse kinematic quantities of cam followers. The thesis contains general discourse on the topic of cam mechanisms and basic terms definition. This is followed by putting the device into service, eliminating its particular imperfections, analysis of kinematic quantities of various combinations of available cams and followers and definition of methodics of the educational problem. The educational problem itself follows the presentation and commentary of gained results. At last some recommendations for the future modifications of the experimental apparatus are given followed by foreshadow of its eventual future usage.
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Valvetrain of Compression-ignition Tractor Engine
Mikula, Vojtěch ; Janoušek, Michal (referee) ; Drápal, Lubomír (advisor)
This bachelor thesis deals with the main types and parts of the valvetrain systems of four-stroke engines. In the first part of the thesis are presented the most widely used versions of valvetrains and their use in the tractor engines. In the next part of the thesis is performed the construction and stress calculation of the valvetrain according to proposed proportions.
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Analysis of Material Flow During Cam Forging
Kopečný, Adam ; Lidmila, Zdeněk (referee) ; Řiháček, Jan (advisor)
The diploma thesis deals with the optimization of final position of overlaps on a forged cam. This part is manufactured in Šroubárna Kyjov, spol. s r.o. The cam is made from ČSN 14 109 (100Cr6) steel. The thesis is focused on the optimization of overlaps arising due to pressed burrs on the edges of the semifinished forging. Currently, the final position of these overlaps is very close to the edge of the pre-forged hole of the cam. Undesired chipping of material occurs during machining of the hole to the exact dimension. The final position of the overlaps is optimized by using the numerical simulation in Simufact Forming 15.0, including a verification simulation for optimal parameter settings. Various diameters of semifinished products, turned tools, and modification of shapes of the tools are tested in the thesis to prevent occurrence of the overlaps in undesired positions.
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Experimental Analysis of Kinematic Quantities on Cam Mechanism
Komenda, Lukáš ; Dočkal, Aleš (referee) ; Zimmerman, Martin (advisor)
This diploma thesis deals with creation of a laboratory task related with analysis of kinematic quantities on cam machanism. A new measuring chain was created as a part of the new laboratory task for analysis of kinematic quantities with use of sensors and signal processing by software LabVIEW. The concept of the laboratory task on a experimental machine was based on knowledge gained from Current State of Knowledge where basic principles of laboratory training and utilization of cam mechanisms in learning were described.
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Design of a Unified Mechanism of Shifting and Activation of the Parking Brake
Hagara, Adam ; Řehák, Kamil (referee) ; Prokop, Aleš (advisor)
This bachelor thesis deals with the design of a unified mechanism of shifting and activation of the parking lock. The theoretical part is devoted to a more detailed description of the current shifting mechanisms, synchrosystems and parking lock mechanisms. The practical part starts with the analysis of the movements and positions of the individual mechanisms, followed by conceptual designs and the selection of the most suitable one. This is followed by the final design elaboration, which includes the development of a force analysis and torque calculations. The functionality of the geometry of the designed mechanism is verified by dynamic analysis, while the other components of the mechanism are detailed. Finally, an FEM analysis of the components of the unified mechanism is performed to confirm the functionality of the selected design. The thesis also includes a drawing documentation attached in the annex.
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Control of packaging machine using Safety PLC
Žiak, Martin ; Novotný, Radek (referee) ; Štohl, Radek (advisor)
This thesis deals with a technology of continuous packaging machine in the beginning from the point of risk assessment and design of necessary measures to reduce the risk as much as it is possible. Here the HRN method was used to quantify every risk factor. Next part documents the implementation of the safety measures and the realization of the safety circuits by using Simatic S7–1500F safety PLC and Shared device functionality. Safety function which is realized in the Sinamics S120 drive is Safe Stop 1. Next, it describes the drive dimensioning and the principle of the drive control. Simotion PLC is discussed in more details and then is used as a motion control master. An approach to the configuration of camming synchronous operation is dealt with in details. Cam design and their realization is documented, too. The thesis also demonstrates the state manager that was implemented in the user program and which is used according to the concept of OMAC state manager. In the end a simple HMI for packaging machine control is described.
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The device for measuring of camshafts timings
Jozíf, Lukáš ; Mazal, Pavel (referee) ; Mazůrek, Ivan (advisor)
Bachelor’s thesis is focused on constructional concept of device for measuring of camshafts timing and its wear-out. After short introduction and definitions of basic concepts there are problems of cams design analyzed and overview of the commercially offered devices is mentioned. Next part focuses on construction of the proper device including design documentation. Procedure of measuring with the device and example of some data evaluation is described. In the conclusion I evaluated constructional and economic aspect the whole concept.
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Design of a Unified Mechanism of Shifting and Activation of the Parking Brake
Hagara, Adam ; Řehák, Kamil (referee) ; Prokop, Aleš (advisor)
This bachelor thesis deals with the design of a unified mechanism of shifting and activation of the parking lock. The theoretical part is devoted to a more detailed description of the current shifting mechanisms, synchrosystems and parking lock mechanisms. The practical part starts with the analysis of the movements and positions of the individual mechanisms, followed by conceptual designs and the selection of the most suitable one. This is followed by the final design elaboration, which includes the development of a force analysis and torque calculations. The functionality of the geometry of the designed mechanism is verified by dynamic analysis, while the other components of the mechanism are detailed. Finally, an FEM analysis of the components of the unified mechanism is performed to confirm the functionality of the selected design. The thesis also includes a drawing documentation attached in the annex.
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Analysis of Material Flow During Cam Forging
Kopečný, Adam ; Lidmila, Zdeněk (referee) ; Řiháček, Jan (advisor)
The diploma thesis deals with the optimization of final position of overlaps on a forged cam. This part is manufactured in Šroubárna Kyjov, spol. s r.o. The cam is made from ČSN 14 109 (100Cr6) steel. The thesis is focused on the optimization of overlaps arising due to pressed burrs on the edges of the semifinished forging. Currently, the final position of these overlaps is very close to the edge of the pre-forged hole of the cam. Undesired chipping of material occurs during machining of the hole to the exact dimension. The final position of the overlaps is optimized by using the numerical simulation in Simufact Forming 15.0, including a verification simulation for optimal parameter settings. Various diameters of semifinished products, turned tools, and modification of shapes of the tools are tested in the thesis to prevent occurrence of the overlaps in undesired positions.
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