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Producing 100 mm caliber shell
Santa, Patrik ; Harant, Martin (referee) ; Lidmila, Zdeněk (advisor)
The bachelor’s thesis is focused on producing 100 mm caliber shell. It’s a cylindrical component with variable thickness of the wall. Material used is brass CuZn30. After evaluation of different producing options, deep drawing was chosen as the most convenient technology. Semi-finished product is round blank from which, using deep drawing, a cup will be shaped. Subsequently using technology of deep drawing with wall thinning, wall thickness will be reduced to a required dimension. Shearing runs on a hydraulic press FB one 8800 and deep drawing is provided by hydraulic press YW27-1000A. Machines used were selected on the basis of calculated forces. Also a drawing documentation was processed for the last draw and for a mold used for narrowing the orifice.
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Technological structures formed parts
Kafuněk, Jan ; Žák, Ladislav (referee) ; Lidmila, Zdeněk (advisor)
The bachelor‘s thesis is composed from research and is described in practical part. Searches contains basic information about the process of cutting, bending and tractioning, which is followed by a description of design principles in the design of sheet metal parts. The practical part is focused on verifying the importance of complying with technological design of products. Products can be divided into the sample products without practical use and products that can already have their use in practise.
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Manufactory of drown flanges on a sheet of high-strength steel
Laštovica, Petr ; Vašík, Ladislav (referee) ; Lidmila, Zdeněk (advisor)
Based on study of documents supplied by PWO Unitools a.s. and on advices of design office staff, tool for forming flanges was designed. This tool was then manufactured and it has been used for carrying test of creating flanges of various diameters from high-strength steels. During these tests, the following parameters were optimized – force of upper and lower blank holder and the height of the main guides. Threads were created into these drown flanges. These threaded joins were later tested for maximum torque and maximum compressive strength.
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Suitable lubricants for deep drawing of stainless steel
Mück, Jonáš ; Staněk, Vojtěch (referee) ; Lidmila, Zdeněk (advisor)
The intention of this thesis is the experimental evaluation of different lubricants and their suitability for deep drawing of stainless steel 1.4404. The testing method is based on the friction model at the point of drawing edge and retainers. This model corresponds with a structure of testing fixture. The suitability of every single lubricant for this application has been determined by comparison of the output, which is dependance of the strength on the track with the reference results. The testing has been performed on many different samples provided by various manufacturers. The best result was measured with the oil Kalorex AT 650 S, manufactured by AT Oil, which belongs to the group of environmentally harmful lubricants. Based on the results of this experiment we can conclude that chlorine content significantly increases the lubrication capability especially under high pressure. The modification of preparation geometry which presumes the elimination of certain undesirable disturbances accompnaying the experiemnt has been also proposed.
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A design of the die for creation of conic press in the austhenitic inox
Šlosr, Michal ; Podaný, Kamil (referee) ; Lidmila, Zdeněk (advisor)
The thesis deals with a design of the tool that creates the conic press in the austhenitic inox 17 240 (X5CrNi18-10). In the first part are described the possible production technologies with a focus of non rigid tool. For the realization is chosen the Guerin process. The rigid tool is replaced by non rigid tool (rubber / polyurethane). In a final part is performed an evaluation of the influence of non rigid tool, lubricants and venting.
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Forging oblong forgings
Chudý, Jan ; Štroner, Marek (referee) ; Lidmila, Zdeněk (advisor)
This bachelor´s thesis is focused on design of technological production procedure of front wheel-drive arm of agricultural machine. Material for construction of this part is unalloyed steel 12 060. Part of this thesis is literall study focused on forging. On basis of this study is designed required forged piece, which will be processed by swaging on hammer KHZ 4A. After swaging is needed removal of excess material in form of burr and stencil with trim pressing machine LKOA 200. Swadge is made of alloyed tool steel 19 662. Part of thesis is mechanical drawing documentation and technical-economical assessment.
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Design of tool for drawing of wire
Kryštof, Marek ; Lidmila, Zdeněk (referee) ; Císařová, Michaela (advisor)
This thesis submits design of tool for drawing wire. The wire is using like a semi-finished product for production of steel abrasive brush. Based on a literary study and calculations, the drawing tools were designed according to the attached documentation. The starting blank for drawing was chosen stainless steel wire made of 1.4301 steel (ČSN 17 240) with a diameter of 1.2 millimeters. The production procedure is designed for the KOCH KTZ II/17 towing machine. The wire is drawn in seventeen operations.
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Production of holder
Andris, Tomáš ; Podaný, Kamil (referee) ; Lidmila, Zdeněk (advisor)
The project elaborated the design of technology production of the holder used for fixing pneumatical cylinder at the testing rack. The holder is manufactured from 2 mm thick sheet metal made of structural steel 1.0038 in a production series of 6,000 units/year. After considering the individual production options, shearing in transfer die and simple bending die were selected. Based on the literature study of shearing and bending technology, an optimal production process of the holder was proposed. After technological, structural and verification calculations, the tools were designed, and the technical documentation was prepared. For the production of the holder was selected eccentric press LEXN 100 C made by Šmeral Brno a.s. This press meets the requirements of the forming force, forming work and the dimensions of the tool. According to the calculated economy of production, the production costs of one holder were determined with a 30 % profit to 97 Kč. The turning point when production becomes profitable was calculated to 4 454 units.
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Production of carpentry joints
Kliš, Vojtěch ; Žák, Ladislav (referee) ; Lidmila, Zdeněk (advisor)
The thesis deals with the design of the technology for the production of the galvanized sheet. It is a carpentry joint that serves for joining wooden structures. The work is focused on metal forming, namely cutting technology. Based on the production series of 30,000 pieces/year, the shape and dimensions of the part, the method of shearing was chosen for production. Furthermore, the necessary technological calculations were performed. The tool consists of standardized components that have been selected based on the standards. For production was chosen eccentric press S 160 E from the company Šmeral Brno a.s. The price of one component is CZK 9.
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Die forging
Stračánek, Rostislav ; Šlais, Miroslav (referee) ; Lidmila, Zdeněk (advisor)
This diploma thesis is based on proposal of manufacturing technology forging of connection rod by die forging. The connection rod is made of 12 050 steel and it is part of crank mechanism in combustion engine. Production series was specified to 120 000 pcs. for year. Into technology procedure was implemented method of cross wedge rolling before die forging. The material for transverse cross wedge rolling was chosen 19 554 steel. Process of die forging was selected three operation in vertical forging press LZK 4000 with pressure force 40 MN made by company Šmeral Brno a.s. For die material was chosen 19 552 steel. And finally was carried out technical and economical evaluation of the forging production.
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