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Woodworking machines for furniture industry
Tomalík, Jan ; Chladil, Josef (referee) ; Kalivoda, Milan (advisor)
The bachelor thesis deals with woodworking machines that are used in the furniture industry to produce furniture parts. Initially, this topic describes wood as such. It discusses in detail its structure and composition, which are important in determining the physical and mechanical attributes of wood. The topic then focuses on the main machining methods by which wood can be processed, including the machines used for this purpose. Problems in sawing wood, that are caused by defects in the tool or in the material being machined, are mentioned. There is also a brief classification of furniture products according to the furniture standard, where furniture is classified using several factors. Finally, all the woodworking machines and methods are interpreted on the design of a wine rack, the manufacture of which is discussed in detail from the initial collection of the semi-finished product to its final assembly. A technological process is drawn up for all the parts needed to assemble the stand, accompanied by drawings.
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Use of water jet technology in a company
Faltus, Tomáš ; Osička, Karel (referee) ; Kalivoda, Milan (advisor)
This thesis focuses on water jet technology. In the theoretical part of the thesis, the principle and classification of this technology, the quality of the cut surfaces after water jet cutting, the types of bevels, and the equipment needed for this technology are described and analyzed. It also describes the use of an abrasive water jet in machining and summarizes the advantages and disadvantages of this technology. Additionally, the thesis presents the machinery of the company with which the author of the diploma thesis worked, as well as its production range. The practical part of the work is devoted to the experiment, which consists in selecting a component for the production of samples using two abrasive nozzles, with subsequent assessment of the quality of the machined surfaces in relation to the size of the diameter of the abrasive nozzles as well as in relation to the materials and their thickness. Two materials of two different thicknesses were used for the samples. The quality of the machined surfaces was measured using two roughness meters. The average arithmetic deviation of the profile Ra and the largest height of the profile Rz were measured. At the end of the thesis, the deflection of the beam is measured using a microscope, and the consumption and the price of the abrasive for individual sample components were also calculated.
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Machining of components for hydraulics
Piroš, Viktor ; Jaroš, Aleš (referee) ; Kalivoda, Milan (advisor)
The main motivation of this final thesis is the draft and verification of the interchangeability of grinding technology for a more efficient machining method, namely the technology of precise turning. The aim is to reduce the production costs of one of the components of the hydraulic assembly. The introductory chapter is devoted to the analysis of the manufactured component and its application, the analysis of the current manufacturing process and the justification of the proposed interchangeability. The subsequent theoretical part is designed so that the summarized knowledge can be used in the practical part. Its content is the design of the machine tool, cutting tools, cutting and process conditions, the method of clamping the semi-finished product, the machining cycle and the time standard. At the end of the practical part there is a technical and economic evaluation of the precision turning process, focusing on the quality of the machined surface, dimensional stability, roundness stability and evaluation of time and cost savings. The conclusion of the thesis is a brief summary of the findings and results of the proposed process and its subsequent implementation.
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Design and manufacturing of an engraving LED laser
Hlaváček, Petr ; Kalivoda, Milan (referee) ; Dvořák, Jaromír (advisor)
The bachelor's thesis is divided in two main topics. In first one it characterizes what unconventional machining methods are and divides them into groups according to the material removal effect. Each method is always simply and briefly explained. The purpose of this part is to introduce the unconventional technologies and their use in mechanical engineering. Second major topic follows comparison between beam methods and is dealing with the design and construction of a laser engraver. The goal is to build a prototype that allows not only engraving but also cutting into materials such as cardboard. The primary purpose of this machine is the production of kits for model railroad. The last chapters are about economic evaluation and comparison between made prototype and commercially sold engraver.
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Suggestion for rationalization of injection mould part production
Kamenická, Eva ; Kalivoda, Milan (referee) ; Sedlák, Josef (advisor)
The diploma thesis deals with suggestion for rationalization of production of an injection mould cavity plate and of a part responsible for cooling of the final plastic product. The main objective is to reduce the production time while meeting the high requirements for dimensional and geometric accuracy and surface integrity of the manufactured parts. The thesis starts with a theoretical analysis of the production of mould parts. This is followed by an analysis of the initial state of production, which consists of the characteristics of the previously mentionned manufactured parts, the available production means and a description of the original technological process. The experimental part of the thesis explains the procedures and justifies the choices made in the creation of new programmes within the CAM software Cimatron. Several possible variations of tools and cutting parameters have been experimentally tested and their final choice is justified in the thesis. The output of the thesis is a new manufacturing process for the production of both components, which has been applied in practice and evaluated on the basis of the results of testing the quality of the components and the plastic product itself. In the conclusion of the thesis can be found an evaluation of the output of the thesis and a time comparison of the previous process with the new suggestion. All experiments and measurements, including the production of the components themselves, were carried out in the toolroom of ITW PRONOVIA, s.r.o. in Veľká Bíteš, which is also the creator of the topic of this thesis.
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Sinumerik 840D sl. tools for programming of CNC machines
Mešina, Matej ; Kalivoda, Milan (referee) ; Polzer, Aleš (advisor)
The thesis deals with the design and production technology of the front hub for a mountain bike. The research focuses primarily on the various control systems of CNC machining apparatuses. The second chapter is devoted to the elemental differentiation of hubs, the concept of personal design of the hub, and the characteristics of the materials for its production and its verification using the FEM analysis. The third chapter deals with the design of a workpiece, instruments and the manufacturing process itself. The design of an NC program constructed in the SinuTrain 4.8. software is dealt with in the fourth chapter. The last part is devoted to the technical and economic evaluation of the proposed solution.
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Machining of the gear-box casting on a CNC machine
Hložek, Milan ; Osička, Karel (referee) ; Kalivoda, Milan (advisor)
The master’s thesis focuses on the machining of a chosen gearbox on a CNC machine. The theoretical part deals with gearboxes in general and the aluminium alloy from which a selected gearbox is manufactured. In the practical part, the machining of the gearbox is proposed according to the corresponding drawing. Gradually suitable machines are selected, then depending on their limits, clamping devices are designed, next a set of tools is selected and an NC program is generated. The technological process of production is proposed and the basic production costs are calculated.
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Solution production technology of part "laparoscopy instrument´s jaw" on a CNC machine
Pospíchal, Oldřich ; Sedlák, Josef (referee) ; Kalivoda, Milan (advisor)
Bachelor thesis submitting a proposal for the production of components of the laparoscopic instrument machined on CNC machine. Based on the analysis of components of design, technological and material aspects, is developed technological process of production, processed technological documentation, compiled and verified NC program for the CNC machining center. The thesis compares manual and automated programming, evaluates manufacturing of jaws and assesses possible monthly production capacity of one machine.
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Finishing tool manufacturing
Rušín, Filip ; Kouřil, Karel (referee) ; Kalivoda, Milan (advisor)
This bachelor thesis deals with the production of a finishing instrument for roughing three different diameters. The first chapter introduces the selection of the required material, the semi-finished product design and the heat treatment of the product. The following is determination of the production conditions and compilation of the technological process and drawing. At the end of this work there is an evaluation of the technical-economic aspect and a discussion about possible upcoming situations.
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