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The technology of material division with grinding operations
Rýznarová, Martina ; Kalivoda, Milan (referee) ; Prokop, Jaroslav (advisor)
This bachelor thesis deals with the technology of material division with grinding operations. The first part explains the basic principles and methods of use and advantages and disadvantages of technology of material division with grinding operations and other methods of dividing the material. The second part is focused on the characteristics of cutting tools and cutting conditions of division with grinding operations. In the last part, the measured unit machine time of the technology of material division with grinding operations and two other methods of dividing the material and wear of cutting wheels are compared.
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Automation of machining of the aluminum castings
Filistein, Jakub ; Prokop, Jaroslav (referee) ; Osička, Karel (advisor)
The diploma work focuses on designing an automated machining, finishing and assembly line. Described in the chapters are the current technology of production, suggestions, the choice of a new solution and a technological-economical evaluation including capacitive and costs of running the production line and a comparison with the current technology. The result is proof that the return of the investment is roughly in one third.
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Analysis of the operating costs of the machining process
Šikula, Josef ; Osička, Karel (referee) ; Prokop, Jaroslav (advisor)
This master’s thesis deals with the operating production cost in machining process and further optimalization. Individual costs items which are related to machining process are specified. Attention is paid to the time consumption of individual machining methods. The aim of the thesis is to find an optimal combination of cutting speed and durability in order to meet the minimum cost criteria and maximum productivity. The calculations are used for turning the outer cylindrical surface and the face surfaces at a constant cutting speed. The work is accompanied by tables and calculations in Microsoft Excel.
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Repair of a holder for grinder cover
Židlický, Ondřej ; Prokop, Jaroslav (referee) ; Kalivoda, Milan (advisor)
This Bachelor thesis is focused on the repair of a holder for a grinder cover and the manufacture of the missing pieces of a pedestal grinder. The structurally-functional analysis of the machine and the manufactured pieces is described in the first chapter of this thesis. The manufacturing process itself is described in the following chapters. Raw materials and production technology are designed for the manufactured components. For each component, there are described the technological processes and instructions. The junction of the new parts of the machine with the original ones is conducted through welding. After this operation, the whole grinder cover is sandblasted and its surface is sprayed with a protective layer of lacquer. Next, the grinder cover is mounted to the pedestal of the grinder. The whole manufacture design is considered from the technological and economical point of view in the penultimate chapter and the drafts for improvements are described in the last chapter. All of the components are manufactured in accordance with the design and the grinder is once again in good technical condition.
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Vizualization of Multi-Agent System With Using Unity Engine
Prokop, Jaroslav ; Zbořil, František (referee) ; Samek, Jan (advisor)
The aim of this thesis is to describe the basic properties of multi-agent system Jason and Unity3D game engine. Subsequently, the thesis deals with creating visualization application which is going to communicate over a network connection with an application written in framework Jason for modeling of multi-agent environment. This sends an requests to visualization agents and their environment on the side of visualization application.
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Machining of Hardened Steel on CNC Machines
Nováková, Eliška ; Prokop, Jaroslav (referee) ; Kalivoda, Milan (advisor)
The bachelor thesis deals with the topic of machining of hardened steels on CNC machines. In the first part there is the description of the company, in which the particular hardened part was machined. The next part of the thesis focuses on properties of hardened steel and their suitability for machining. The middle part of the work states the basic machining technologies used in the company and programming of the CNC machines. Further there are described the materials of the cutting tools for machining of the steel from selected producers/manufacturers. At the end of this thesis the machining of the particular hardened component is described, and the evaluation of the technology procedure is made.
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Adjustments Shearing Procedure Tools
Dziuban, Jiří ; Prokop, Jaroslav (referee) ; Kalivoda, Milan (advisor)
This thesis explains how to determine and eliminate the causes of quality problems in the production of connectors and small electronic components for the automotive industry. The process of making these components is carried out by use of both high speed and low speed metal stamping presses. There are descriptions of the different designs of editing punches, stamping dies, trimming and molding tools and how unplanned issues can occur during the production process. It addresses all the customer requirements for quality end products, listing the type of material, finishes and technology used for the production of individual components as well as their functionality, durability, and economic impacts. All examples of changes in the design or technology of metal stamping presses are based on many years of practical experience and most of them can be successfully applied in other similar type of instrument production.
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ON THE DEVELOPMENT OF HIGH-PERFORMANCE DRILLING TOOLS BY MEANS OF CAD/CAM AND ANALYSIS OF CHIP FORMATION MECHANISM
Madaj, Martin ; Janáč, Alexander (referee) ; Prokop, Jaroslav (referee) ; Píška, Miroslav (advisor)
This document deals with the development of drilling tools by means of CAD and CAE technologies. At first, a brief overview of various design procedures of 3D drill models is presented, possibilities of measurement of force and moment loading during drilling are mentioned, a chip formation mechanism is briefly described and then a list of commonly used explicit (mesh) finite element methods used for cutting simulations is presented. A meshless SPH method have been selected for this work. Although it is able to handle the large deformations easily, it has been used for cutting simulations very rarely and only an orthogonal cutting simulations related information can be found in scientific databases. It has been demonstrated on the orthogonal cutting simulation of A2024-T351 alloy that was also the starting point for SPH simulation of drilling. The following is a decription of the design, simulation and prototyping of new drilling tools - drills with three and two cutting edges and an internal chip channel. This document is focused in detail on the variant with two cutting edges for which SPH drilling simulation has also been performed. Some drawbacks related to more precise chip simulation demands have been revealed, especially a rapid increase in number of SPH elements followed with prolongation of a computational time. Information related to the design of the drilling head with two cutting edges were then used to create the patent application.
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