|
|
A technological preparation of the wiping plate production
Balhar, David ; Dvořáková, Jana (referee) ; Píška, Miroslav (advisor)
The main aim of this master's thesis is to propose a technological preparation of the wiping plate production. Elaboration is divided into four chapters. The first chapter describes forming tool (function and construction). In the second chapter is technologies overview, which are used for the wiping plate production. The most important is the third chapter, because it deals with the main output, and the actual proposal of technological preparation of the production. In the fourth chapter, production is reviewed economically.
|
|
|
Untersuchung von Strukturen und Beschichtungen für tribologisch optimierte Umformwerkzeugoberflächen für die Aluminiumfeinblechbearbeitung
Kořenek, Jakub ; Hänel, Thomas (referee) ; Blecha, Petr (advisor)
V rámci bakalářské práce je provedena rešerše ke stavu techniky z pohledu tribologie, tváření hliníku, povlakování, strukturování a v závěru rozdělení tribologických zkoušek a metod jejich hodnocení. V praktické části jsou vyhodnoceny už dříve provedené pokusy na oscilačním tribometru. Následně byly provedeny pokusy tažení pásu s ohybem a bez ohybu s různými parametry pro jednotlivé zkoušky. Testovány byly různé laserové struktury (křížové, liniové, bodové) s variací jejich hloubky a pokrytí vzorků. V závěru práce jsou výsledky pokusů zhodnoceny z pohledu opotřebení, koeficientu tření a stability tribologického systému v průběhu pokusu. Z výsledků vychází doporučení pro následující pokusy a možné oblasti aplikace jednotlivých struktur.
|
|
|
Manufacturing of nibbling parts
Moravčík, Juraj ; Peterková, Eva (referee) ; Podaný, Kamil (advisor)
This work describes principles and methods of punching starting from gradual sheering. In this work they were included advantages and disadvantages dividing punching tools of the two design, it´s revolver and cassette. There were also described of forming tools and some of their basic representatives, which are in practice often used. The two basic principles of machines have been described on the example of companies Prima Power and Trumpf.
|
|
|
Age forming of aluminium alloys
Stanislav, Filip ; Petrásek, Miloslav (referee) ; Klement, Josef (advisor)
The diploma thesis is focused on the description and the verification of a relatively young creep age forming method. This method is based on a relaxation of stress and a creep of material, which occur by forming a part in the clamping tool during the artificial precipitation heat treatment at elevated temperature. After removing from the tool, the spring back and the residual stresses in the part are smaller compared to the conventional forming methods. This is mainly reflected in the increased fatigue resistance of the structure. The creep aging is only applicable to the precipitation heat treatable alloys. This thesis is focused on aluminium alloys, which are typical for the aerospace industry. The first part of the thesis describes principles of technology, its use in the aviation and material processes in the aluminium precipitation heat treatable alloys during the creep age forming. In the second part, there is a methodology of the verification of technology on samples made of the aluminium alloys ČSN EN AL-P 7075 and ČSN 424203 (approximate equivalent of ČSN EN AL-P 2024). Furthermore, a forming tool is designed, and experiments are performed according to the proposed methodology. At the end of the thesis, the experiments are evaluated and changes in the spring back of the samples are compared for three different methods of forming: the conventional cold clamping forming, the creep age forming and the creep age forming with an overaging.
|
|
|
Bulk forming technology of piston of disk brake
Kiza, Jakub ; Jopek, Miroslav (referee) ; Forejt, Milan (advisor)
The master’s thesis presents a proposal for the manufacturing technology of a disk brake piston made of material ČSN 41 2010 for a car brake caliper. Method of cold volume forming was chosen due to the production requirement of 200 000 parts per year, convenient axisymmetric shape of the part and required size tolerance. Based on study of chosen technology, production technique, which contains calibration and backward extrusion, was designed. Technological computations and optimalization of tool dimensions were done for the chosen production technique. The manufacturability of the part was verified by numerical simulation in Simufact Forming software. Because of unavailability of automatic cold forming machine designed for bigger sized parts on the market, the forming process is done by two forming tools with use of INWORK 700 hydraulic press. For the selected profit of 20 % the price for the part was set at 26,8 Kč. The turning point was determined as 52 745 pieces.
|
|
|
Production single parts "COVER" from sheet metal
Vítek, Roman ; Císařová, Michaela (referee) ; Žák, Ladislav (advisor)
The Master’s thesis written in the frame of studies branch Manufacturing Technology (2303T002) is submitting design of technology production of sheet metal cover. The part is made of sheet metal 1,5 mm thick. The material for the part is HC260LA (ZStE260). There are no special mechanical or dimensional accuracy demands for the part. According to production run (5 000 pcs. per year for 5 years), design complexity and machine accessories of submitter was proposed manufacturing the part by drawing technology with finish laser cutting. Forming tool is designed according with press Erfurt PKZZ 315. Thesis includes economical evaluation of elaborated technology with other variants of production.
|
|
|
Technology of manufacturing of titan exhaust
Hrubý, Patrik ; Slaný, Martin (referee) ; Zouhar, Jan (advisor)
The Diploma Thesis deals with the technology of manufacturing the titan exhaust for a two-stroke engine. It includes a description of the manufacturing procedure. It analyzes in detail the forming issue of sheet-metal parts in order to eliminate the spring-back effect, and it finds possible solutions to this problem.
|
|
|
Design of forming tool production technology using the additive method of 3D printing
Obadal, Jan ; Vašíř, Jakub (referee) ; Sedlák, Josef (advisor)
This bachelor thesis deals with a plan of a forming device manufacturing technology utilising additive methods of 3D printing. The theoretical part of this thesis deals with the characteristics of sheet metal forming technology and the characteristics of additive technology. The practical part of this thesis contains a breakdown of the current state and it deals with usage of the current forming tool. In terms of the practical part, there is an innovation draft whose goals it to speed up the manufacture of a particular pressed piece. The principle of this innovation is the utilisation of a single-purpose machine which is optained through the additive method of 3D printing. The optimal combination of printing parameters and tool geometry are found through prototype testing. To keep the product measurements accurate requires modified proportiong of the semi-finished product. The final tool is capable of bending two pressed pieces at the same time. During the process of bending, it is necessary to review the measurements of every 25th pressed piece and to revise the position of a bottom dead center. The lifetime of this innovative tool is set to 600 pieces. Technological and economical evaluation shows return of invesments and reduced time due to the application of this innovation, thanks to which the bending time is reduced by 50 %.
|
|
|
Production Possibilities of Punching Machines
Dolejš, Radim ; Císařová, Michaela (referee) ; Řiháček, Jan (advisor)
This thesis introduces the elementary principles of punching, stemming from the gradual shearing theory. Furthermore, it includes description of instruments used in cassette and revolver systems. Forming tools are then also defined. The thesis details the parameters of individual parts of the punching machine, and an example of a hybrid laser-punching machine is then presented.
|
|
|
Bulk forming technology of piston of disk brake
Kiza, Jakub ; Jopek, Miroslav (referee) ; Forejt, Milan (advisor)
The master’s thesis presents a proposal for the manufacturing technology of a disk brake piston made of material ČSN 41 2010 for a car brake caliper. Method of cold volume forming was chosen due to the production requirement of 200 000 parts per year, convenient axisymmetric shape of the part and required size tolerance. Based on study of chosen technology, production technique, which contains calibration and backward extrusion, was designed. Technological computations and optimalization of tool dimensions were done for the chosen production technique. The manufacturability of the part was verified by numerical simulation in Simufact Forming software. Because of unavailability of automatic cold forming machine designed for bigger sized parts on the market, the forming process is done by two forming tools with use of INWORK 700 hydraulic press. For the selected profit of 20 % the price for the part was set at 26,8 Kč. The turning point was determined as 52 745 pieces.
|
guest ::
