|
|
The design and technology of a mold production for the precision casting
Kopcík, Daniel ; Humár, Anton (referee) ; Píška, Miroslav (advisor)
The theoretical part of this bachelor´s thesis describes basic attributes of the lost wax casting method. The aforementioned section describes casting stages from component assignment to model casting, with the main concern of making wax model moulds, materials employed for moulding mixtures and casting accuracy achieved by precise casting. The experimental part begins with mould design for two components set by a customer, continues with focusing on design of casting and wax model mould. This is followed with creation of the CNC machine control program as well as choice of the moulding mixture and finally description of such casting. The experimental section is concluded by brief description of casting test and evaluation of the quality and accuracy of cast parts.
|
|
|
Solution production of a component to mould
Veselý, Vladimír ; Jaroš, Aleš (referee) ; Kalivoda, Milan (advisor)
This thesis describes creation of a packaging component made of ABS-TPU material. It is being made by vacuum shaping technology on a negative form. Bosch Diesel s.r.o. Jihlava company is introduced in the first part and a brief summary of the most commonly used packagings follows. The next part shows the very first draft of packaging shape and also how customers and the manufacturer implement some final changes. Next part describes the process of making a form and the packaging fabric. Finally there is aneconomical evaluation in the last part.
|
|
| |
|
|
On the modern surface treatment of pressure casting dies
Černý, Štěpán ; Sliwková, Petra (referee) ; Píška, Miroslav (advisor)
Bachelor thesis is focused on the influence of surface treatments due to prolonging life and decreasing an amount of service hours on the die casting molds of aluminium alloys. Theoretical analysis of the problem deals with the requirements for tools materials used for making these moulds. Furthermore it deals with the materials which are most commonly used in their production and the species of aluminium alloys which are most commonly casted. The second part of this thesis, which is discussed in detail, deals with design solution regarding to usage of surface finishes on the moulds for die casting and their specific properties. Another part of this thesis contains experimental tests where was measured selected coating in order to determine its behaviour during the casting cycles with a focus on increasing lifetime of the mould insert, also reducing the amount of glued metal on the walls and finally improving the surface of casted part. It was found, according the analysis results, that the TiAlN coating helped to reduce the amount of glued metal on the mould walls. This also helped to reduce the amount of service intervals. On the other side for achieving much better results is better to use TiB2 coating. It has been experimentally confirmed that the TiAlN coating is not suitable for using in die casting moulds of aluminium alloys.
|
|
|
Design of injection mold production technology for precision casting
Fendrich, Tomáš ; Polzer, Aleš (referee) ; Zlámal, Tomáš (advisor)
The diploma thesis deals with the design and production of an aluminum injection mold for investment casting. The work briefly describes the technology of investment casting together with a description of the types of molds, their internal arrangement and the most commonly used materials. Another part of the work is devoted to the analysis of aluminum molds machining. Emphasis was placed mainly on those operations, that will be used in production of mold. The practical part describes in detail the process of designing the model and mold, as well as the process of designing production technology. The construction is performed using the program SolidWorks, production technology using the program SolidCam. At the end of the work, the mold is assembled and the functionality of the mold is verified by means of test injection and economic evaluation is made.
|
|
|
Draft controlled modular source 6,3kA / 5VAC for warming trials and tests breakers
Zolich, Ladislav ; Dostál, Lukáš (referee) ; Dohnal, Petr (advisor)
The main object of this thesis is to design a toroidical transfomer on the given parameters. Project is focused on learning about principles of transformers, it’s designing and mainly on designing the given transformer. Designing contains material selection of the core of the transformer, its size, then calculating magnetic flux, no-load current, cross-section of conductor and calculating no-load losses and joule losses. The next part is designing the mechanical parts of transformer, its terminal plate, base and cooling system. Thesis is also mainly focused on designing the form for potting the transformer in epoxy resins. In the end is measurement and form of powering the transformer.
|
|
|
A proposal and production of vacuum mold for serial production of plastic forming
Tišnovský, Jakub ; Chladil, Josef (referee) ; Sedlák, Josef (advisor)
This diploma thesis deals with the proposal and production of a mold for series production of plastic parts by vacuum forming. The thesis is divided into 2 main chapters. The theoretical part includes analysis of chip machining technology. The experimental part focuses on solving the design of the mold in PowerShape software, a detailed analysis of making of the model for casting and about making of the mold themselves. In the last part the manual completion and verification of the mold is discussed. Thesis is terminated by technical-economic evaluation, in which is discussed about production costs.
|
|
|
Construction of foundry core boxes and their use for the production of silicone parts
Skalický, Jan ; Kaněra, Miloš (referee) ; Jelínek, Radim (advisor)
The thesis deals with the design of a mold for use in casting of plastics and rubbers. The product is two different gaskets used in the testing of tubes for automotive industry. The part has a cylindrical shape with a diameter of 19 mm and a length of 25 mm, where two holes with a diameter of 4 mm are additionally drilled in one of them. Depending on the service life, the batch size is approximately 200 pieces per year. The material was not specified, so after research two options were chosen. The first was RTV-2 condensation silicone rubber LUKOPREN N 1522 from Lučební závody a.s. Kolín and the second one was RTV-2 additive silicone rubber ELASTOSIL M 4642 A/B from Wacker-Chemie, s.r.o. The second material came out better from preliminary testing. By gradually improving the design of a simple single-piece steel mold, a final version was created which is double in size and consists of three parts. It is made by 3D printing using FDM method from PLA material. It was found that in order to achieve a defect-free casting, the mix must be vacuumed before casting.
|
|
| |
|
| |
guest ::
