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Cutting and non-cutting operations
Hordějčuk, Jakub ; Dvořáková, Jana (referee) ; Dvořák, Jaromír (advisor)
Creating of any part may be by many ways, the choice of a particular method depends on many factors. The point of my bachelor's thesis is to present the currently most commonly used method of metal cutting. Gradually I introduces the most popular method of the metal cutting, the principles and usability. The first part is a presentation of theories and methods of cutting operations and the second one of a method non-cutting operations. To the different methods there are examples from practice.
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Technology of production part
Straka, Jiří ; Dvořák, Milan (referee) ; Osička, Karel (advisor)
This diploma thesis is developed within my Master’s degree studies, branch mechanical engineering (M21 K), and specialization in M STM. The aim of this thesis is to solve the technology of mechanical production (machining, tooling) for the machine component called ‚shape lid‘. I execute the analysis of this technology from the perspective of the conventional machining process, and alternatively, some of the non conventional machining process, too. Conventional machining process is so far used for manufacturing of this sort of machine’s element. It‘s implying laborious work difficulties, even it’s economically disadvantageous. I suggest a new technology of manufacturing. At first, a semi-finished component could be sized by conventional machining process, and then it could be finished by the CNC (computer numerical control) milling machine. By the non-conventional machining process assume the usage of an electro-erosive machining, plasma machining, or water jet machining.Conventional technology suppose the usage of CNC milling machines. Thereinafter, feasibility aspects of this brand new technology are considered in technical and economical perspective.
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Tube bending
Richter, Tomáš ; Peterková, Eva (referee) ; Žák, Ladislav (advisor)
The bachelor thesis deals with the theoretical analysis technologies of bending circular cross-sections. In the first part are said formulas for the calculation of the processes occurring in the blank material and formulas to refine the viability of the operation (or for the assessment of defects). The second part describes the current technologies used for bending pipes of circular (and other) cross-sections.
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Porovnání konvenčního zpracování půdy a přímého setí Väderstad Tempo F-8
VINCÍK, Matěj
This bachelor thesis deals with the comparison of conventional tillage technology and direct sowing technology. It describes the operations associated with each technology and the appropriate machines to use. The financial and revenue aspects are mainly used for comparison. The financial ones consist of the cost of fuel for working 1 ha of land and the cost of the employee's salary for processing 1 ha of land. Yield is measured by weighing the harvested material from land processed by conventional technology and weighing the harvested material from land processed by direct sowing.
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Effect of different soil preparation on yield parameters of winter oilseed rape
TOMÁŠEK, Václav
This thesis deals with the issue of growing oilseed rape (Brassica napus L.) with using various technology of tillage. It is divided into two main parts. The first part includes literary overview witch deals with basic information about oilseed rape ant than with overview about technology of tillage. The main part of thesis is evaluation result of two years small-plot experiment from 2017/2018 and 2018/2019. This experiment was founded on the lands of Agricultural Farm VETO s. r. o. in the village Veselíčko near the city Písek. To the experiment was integrate four varieties. It was Mazari CS, Atora, PT234 and PX113. Each variety was sown in three kinf od variants of tillage. Variant with shallow tilage, variant with plowing and variant with deep tillage. All sown variant were repeated in four times. In the experiment was monitored influence of tillage to rapeseed yield, and also some yield elements like weight of thousand seeds, percentage of oil, number of fplants per square meter and number of pods per plant and root neck thickness. Higher yields were achived in 2018 when the average yield of all lands was 5,63 t/ha which in 2019 dropped to 3,80 t/ha. Influence of tillage on seed yield was worse in 2019 because this year had less precipitation. In this year was the best option with deep tillage. In conclusion, we can say deep tillage has positive effect, especially in drier years.
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Možnosti inovace systému zpracování půdy v zemědělském podniku
Brabec, Jan
This thesis is focused on Mr. Pohanels farm and its tillage system. First, the work discusses findings from the literature sources about soil tillage systems. The following part is focused on characteristics of the farm, its production, natural conditions and brief history of the farm. It describes the historical and current agricultural technology and economical evaluation of current soil tillage system. The next part proposes innovations of the soil tillage system, with respect to improve the soil condition, possibility to increase the yields of major crops, and reduce fuel consumption. In the end is made a comparison of existing and proposed soil tillage system.
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Technology of production part
Straka, Jiří ; Dvořák, Milan (referee) ; Osička, Karel (advisor)
This diploma thesis is developed within my Master’s degree studies, branch mechanical engineering (M21 K), and specialization in M STM. The aim of this thesis is to solve the technology of mechanical production (machining, tooling) for the machine component called ‚shape lid‘. I execute the analysis of this technology from the perspective of the conventional machining process, and alternatively, some of the non conventional machining process, too. Conventional machining process is so far used for manufacturing of this sort of machine’s element. It‘s implying laborious work difficulties, even it’s economically disadvantageous. I suggest a new technology of manufacturing. At first, a semi-finished component could be sized by conventional machining process, and then it could be finished by the CNC (computer numerical control) milling machine. By the non-conventional machining process assume the usage of an electro-erosive machining, plasma machining, or water jet machining.Conventional technology suppose the usage of CNC milling machines. Thereinafter, feasibility aspects of this brand new technology are considered in technical and economical perspective.
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Tube bending
Richter, Tomáš ; Peterková, Eva (referee) ; Žák, Ladislav (advisor)
The bachelor thesis deals with the theoretical analysis technologies of bending circular cross-sections. In the first part are said formulas for the calculation of the processes occurring in the blank material and formulas to refine the viability of the operation (or for the assessment of defects). The second part describes the current technologies used for bending pipes of circular (and other) cross-sections.
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Cutting and non-cutting operations
Hordějčuk, Jakub ; Dvořáková, Jana (referee) ; Dvořák, Jaromír (advisor)
Creating of any part may be by many ways, the choice of a particular method depends on many factors. The point of my bachelor's thesis is to present the currently most commonly used method of metal cutting. Gradually I introduces the most popular method of the metal cutting, the principles and usability. The first part is a presentation of theories and methods of cutting operations and the second one of a method non-cutting operations. To the different methods there are examples from practice.
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