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Machining of flat-shaped components on CNC machines
Fridrich, Tomáš ; Dvořák, Jaromír (referee) ; Kalivoda, Milan (advisor)
This bachelor thesis deals with machining of flat shaped components using CNC machines. In the theoretical part, the characteristics of CNC machines, NC programming and various methods of workpiece clamping are presented. It is followed by an overview of some Czech and foreign vertical machining centres with traverses only in X, Y and Z axes. Furthermore, an analysis of suitable technological operations for the production of flat-shaped parts is made. The last theoretical chapter deals with flat-shaped components and their division. The practical part of the bachelor thesis is focused on the creation of the NC program and the production procedure of the sample product, the compilation of data into the technological preparation of the production and the evaluation of the production.
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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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Modern CNC machines and their development
Vašíková, Simona ; Osička, Karel (referee) ; Kalivoda, Milan (advisor)
The bachelor thesis is focused on the beginnings of NC and CNC machines from the perspective of historical years, where are included also general information and construction of the most famous machines from history. Also there is their further development, including control system manufacturers and their brief history. The mention of the production of these machines from the perspective of the Czech Republic is included. Part of the thesis is also the division of the current CNC machines according to the type of machined products and the technology together with a sample of 2 selected CNC machines. There is a division of CNC machined parts and evaluation of the use of CNC machines in production. There are the advantages of CNC machines, their accessories and a simple NC program including a product drawing. In discussion there are current technologies in industry, logistics and construction, as well as the current state and attempts to predict future developments.
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Draft of spacer production technology
Zíka, Marek ; Fiala, Zdeněk (referee) ; Jaroš, Aleš (advisor)
The diploma thesis deals with the design of a new technological process for the production of a spacer ring with a diameter of 212 mm in cooperation with the company Meopta – Optika, s.r.o. The production of this component according to the current process does not comply with the prescribed geometric tolerances of flatness of the face and radius runout with a tolerance field size of 0.005 mm. The work is a detailed analysis of the specified component and describes the current technological process, including the machines on which the spacer ring is manufactured. Based on the knowledge gained from the analysis of the current process, a new technological process was created. During the production according to this process, some geometric tolerances were also exceeded, but the values exceeding the prescribed tolerance field were significantly reduced. The department of production technology found the results to be sufficient and the spacer ring will be produced according to the new technological process. In the last part of the work are the costs of production of components according to both processes.
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A design of new production technology of a specified part
Paška, Josef ; Dvořák, Jaromír (referee) ; Sliwková, Petra (advisor)
This diploma thesis focuses on the design of new technology for the production of a given part by company Poppe + Potthoff s.r.o. The thesis is divided into three parts. The first part is a theoretical analysis of individual operations that are necessary for the production of the given part. The second part deals with the analysis of the current technological process of production. In the third part, a new technological process is proposed. In the end, there is a technical and economic evaluation performed, where both variants are compared.
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