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Optimization of projection activities in EPLAN ELECTRIC P8 software
Obšil, Martin ; Bastl, Jiří (referee) ; Polsterová, Helena (advisor)
The thesis deals with the optimization of project activities in the software EPLAN Electric P8. First part introduces electrotechnical software EPLAN, the basic functions, and explains the methodology of the work in the program environment. This is followed by an analysis of the state of the electrical documentation of the TAC 75 circular saw manufactured by Exactcut s. r. o., and the method of designing. The thesis is also focused on the individual problems that make barriers between the average and the high quality level of design and the ability to use the available features of the purchased software. Thereafter, individual optimization steps and partial methods of reaching aims are described. Part of the thesis is devoted to finding solutions for interconnection of two engineering branches, which are electric and fluid technologies and in the end are revealed expansion modules of software, which can be used to achieve a higher level of professional planning activity.
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Diamond wheels and their use in the stone industry
Skryja, Jan ; Kolář, Ladislav (referee) ; Jaroš, Aleš (advisor)
This bachelor thesis deals with stone sawing during stone processing. It is divided into theoretical and practical parts. In the theoretical part diamond blades, the sawing process and stone extraction are described. The practical part is focused on the wear of circular saws in granite circular sawing. The wear is determined for two diamond cutting blades made by different manufacturers and is determined by the blade weight loss and segments height loss as a function of time. Both measured values show linear dependence. The results are the basis for a future comparison of the two diamond blades on the economic side, which is not the subject of this work.
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Conveyor with clamping and measuring
Polák, Aleš ; Koutecký, Tomáš (referee) ; Dvořáček, Jiří (advisor)
The first profile of the thesis describes current methods of segmenting and measuring of aluminium profile and analysis of a specific roller conveyor with a measuring device for feeding aluminium profile to a high-speed circular saw. The second section is focused on designing a new conveyor with clamps for feeding aluminium profile and designing measuring equipment based on the analysis in the first part.
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Prediction of cutting forces and powers when sawing with a circular saw
Skryja, Jan ; Sliwková, Petra (referee) ; Píška, Miroslav (advisor)
This thesis deals with the cutting of steel thin-walled parts by slitting saw. Its subject is to study and test of cutting edges of slitting saws with a goal to reduce cutting forces to a minimum. The thesis is divided into the theoretical and practical part. In the theoretical part, existing knowledge about slitting saws and general cutting technology is analyzed. In the practical part testing of four slitting saws with different geometries of cutting edges during machining of chosen thin-walled part is performed. The performed measurements show that by the proper choice of the geometry of cutting edge, the cutting force can be reduced approximately by 30 %.
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Vliv konstrukce pilového kotouče na proces dělení aglomerovaných materiálů konstantní podávací silou
Poukar, Martin
This thesis focuses on the influence of the number of teeth on a saw blade on the cutting process of wood chipboard and wood fiberboard. It investigates how the number of teeth affects different parameters such as cutting force and specific cutting resistance. The experiment was conducted using four similar blades with varying numbers of teeth under constant feed force. The conclusions show that the cutting force per tooth linearly increases with decreasing number of teeth on the blade, and the specific cutting resistance exponentially decreases with decreasing number of teeth. These results are consistent with the literature assumptions. To select a suitable saw blade, it is necessary to consider multiple factors.
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Energetické parametry obrábění kompresně plastifikovaného a chemicky modifikovaného buku
Růžička, Dominik
This thesis is concerned with machinability and energy variables of compression- plasticized beech Bendywood?, chemically modified beech Belmadur? and chemically plasticized and compressed beech Lignamon? when cutting the saw and cut to define the appropriate model and its parameters. Calculated values of cutting resistance are compared with the values of natural beech and beech modified experimentally determined on a test rig to simulate cutting circular saw.
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Kvalita řezné spáry při podélném rozmítání dřeva speciálními pilovými kotouči
Kryl, Jan
The thesis is focused on qualities problems of the cutting kerf rip saw-blade at along grain cutting native wood. The effect of vibrations of circular saw-blades and feed rate of shift of workpiece on the quality of the kerf has being investigated. The basic parameters of evaluation of the surface were mentioned in theoretical part of this thesis. Also, the methods of assessing the quality of the surface of scattered timber are analyzed inside this thesis. There is also described suitability of different measurement methods, which have been used, due to the nature of solid wood. Finally, constructional modifications of scattering discs are characterized here. At practical part of this thesis is compared the quality of surface of wood scattered with using of saw-blades from company of PILANA. Discs with standard profile of tooth and special toothing of shaped keg were used.
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Prediction of cutting forces and powers when sawing with a circular saw
Skryja, Jan ; Sliwková, Petra (referee) ; Píška, Miroslav (advisor)
This thesis deals with the cutting of steel thin-walled parts by slitting saw. Its subject is to study and test of cutting edges of slitting saws with a goal to reduce cutting forces to a minimum. The thesis is divided into the theoretical and practical part. In the theoretical part, existing knowledge about slitting saws and general cutting technology is analyzed. In the practical part testing of four slitting saws with different geometries of cutting edges during machining of chosen thin-walled part is performed. The performed measurements show that by the proper choice of the geometry of cutting edge, the cutting force can be reduced approximately by 30 %.
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Optimization of projection activities in EPLAN ELECTRIC P8 software
Obšil, Martin ; Bastl, Jiří (referee) ; Polsterová, Helena (advisor)
The thesis deals with the optimization of project activities in the software EPLAN Electric P8. First part introduces electrotechnical software EPLAN, the basic functions, and explains the methodology of the work in the program environment. This is followed by an analysis of the state of the electrical documentation of the TAC 75 circular saw manufactured by Exactcut s. r. o., and the method of designing. The thesis is also focused on the individual problems that make barriers between the average and the high quality level of design and the ability to use the available features of the purchased software. Thereafter, individual optimization steps and partial methods of reaching aims are described. Part of the thesis is devoted to finding solutions for interconnection of two engineering branches, which are electric and fluid technologies and in the end are revealed expansion modules of software, which can be used to achieve a higher level of professional planning activity.
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Konvenční a nové přístupy při výpočtech řezných odporů rostlého dřeva
Láník, Milan
This thesis describes the theory of cutting with a focus on cutting circular saws. The continuity of theoretical calculation methods is described and analyzed in the thesis. The thesis compares and evaluates the differences between theoretically calculated cutting resistances according to standard and new approaches with the experiments. The experiment was conducted on the test device for research of cutting with saw blades.
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