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Innovation of guide rail production technology
Zlínská, Marie ; Ohnišťová, Petra (referee) ; Píška, Miroslav (advisor)
This bachelor's thesis provides the new plan of technological process of production of the guide rail used on the splitting machine type SVIT 06155. The current process of component production, which was designed more than 40 years ago, is proving inefficient with regard to current production possibilities. The first part of the work describes the process of splitting the leather, further explains the principle of operation of the machine and then defines the required properties of the guide rail in terms of operating conditions. The analysis of the issue reveals two possible solutions. The first is a change of the material of the guide rail and the second is a change of the coating technology and its composition. The introduction of the experimental part presents the solution, together with the newly designed production process and drawing documentation of the guide rail. The correctness of the design is further verified by the production of the component itself and by the evaluation of the surface condition of the Alicona device using the surface and profile method. Finally, an evaluation is made and recommendations for future production of the component are discussed.
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Vliv údržby řezací části řetězové pily na hygienu práce
Krejzek, Michal
Bachelor thesis deals with maintaining chain parts of chainsaw depending on hygiene of work. At the beginning is described the hygiene of work in harvesting. In general chain parts construction of chainsaw is described, which includes a detailed description of guide bar a saw chain and their maintance. Furthermore, there are maintances by particular manufacturers of chainsaws and there are exposure limits according to Government order about health protection from unfavourable effects of vibration and noise of chainsaw from the perspective of hygiene of work. Next, the possibilities of unfavourable effect of vibration and noise to human body are described and there are standarts for vibration and noise measurements. In the thesis are solved measured values of vibration and noise of a new chain, with chain without sharpening after one hour work, and with chain without sharpening over one shift and their different values and effects on worker. The results are analyzed and processed into tables and graphs from which exposure limits for noise and vibration are evaluated.
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Innovation of guide rail production technology
Zlínská, Marie ; Ohnišťová, Petra (referee) ; Píška, Miroslav (advisor)
This bachelor's thesis provides the new plan of technological process of production of the guide rail used on the splitting machine type SVIT 06155. The current process of component production, which was designed more than 40 years ago, is proving inefficient with regard to current production possibilities. The first part of the work describes the process of splitting the leather, further explains the principle of operation of the machine and then defines the required properties of the guide rail in terms of operating conditions. The analysis of the issue reveals two possible solutions. The first is a change of the material of the guide rail and the second is a change of the coating technology and its composition. The introduction of the experimental part presents the solution, together with the newly designed production process and drawing documentation of the guide rail. The correctness of the design is further verified by the production of the component itself and by the evaluation of the surface condition of the Alicona device using the surface and profile method. Finally, an evaluation is made and recommendations for future production of the component are discussed.
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