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Manufacturing of the turnbuckle of chain
Ondráček, Pavel ; Jopek, Miroslav (referee) ; Peterková, Eva (advisor)
The diploma thesis is focused on the design of the production technology of a chain tensioner. It is a spatial component made of 1.5 mm thick steel sheet with galvanized surface treatment. DC01 steel was selected as the most suitable material. When considering the production technologies, the production in a combined process tool was selected as the most efficient one for the series of 20,000 pieces. Regarding the tool of more complex design including springs, the production will be done in four steps on the LEN 63 eccentric press with accessories used for feeding and unwinding the metal sheet belt from the coil. The final price of the chain tensioner including the bolt and two nuts is 26 CZK.
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Manufacturing of the Wall Bracket
Fridrich, Ladislav ; Jopek, Miroslav (referee) ; Řiháček, Jan (advisor)
The bachelor's thesis deals with a suitable design of production technology for a wall bracket, which will serve as a speaker positioning system. The part is made of non-alloy structural steel S 235JR with a thickness of 3 mm. The production series is set at 200,000 pieces per year. After evaluating the production possibilities, the technology of bending and progressive cutting is chosen, which are combined in a combined tool. Subsequently, the most suitable arrangement of the part on the sheet metal strip is selected and the sheet metal coil is selected as a semi-finished product for production. Furthermore, technological calculations are performed and drawing documentation of the tool is made. Based on the calculated values, the production machine Mecanica Exacta model CC250 from the company Formetal s.r.o.
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Manufacturing of a connecting pin by cold forming
Koumar, František ; Peterková, Eva (referee) ; Jopek, Miroslav (advisor)
The diploma thesis is focused on the optimization of the production of a rotary connecting pin, produced by bulk cold forming with a focus on upsetting and forward and backward extrusion. The resulting pin will be made of 1.4511 steel. From the three proposed variants of production processes, the optimal variant for four forming operations was selected. Extrusion tools are made of tool steel 19 830. A numerical simulation was performed to verify the suitability of the sequence of the selected variant. The size of the production batch is set at 700,000 pieces / year. In the technical and economic evaluation, the calculated production price of 1 piece of part was coMPared between machining and volume forming, at which the production costs amount to CZK 6,64. The return on this method, with an assumed profitability of 10%, was found for 568 182 pieces produced.
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Manufacturing of mirrors clamp
Večeřa, Jaromír ; Jopek, Miroslav (referee) ; Podaný, Kamil (advisor)
This thesis presents a proposal for manufacturing of a mirror clamp, used for wall mounting. The clamp is made of stainless steel 1.4301 with a thickness of 1 mm. Manufacture series produces 40,000 pcs/year. After considering the individual manufacturing options, production in the combined process tool was chosen. The manufacture takes place in five steps, the utilization of the material is 84.1 %. This was completely proved by technological, design and control calculations. According to these calculations, a tool was designed with all of the technical documentation. Due to the forming force of 180 kN and the work of 113 kJ, the eccentric press T-30 CE from the company SanGiacomo Presse was chosen.
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Innovative production of the brake segment
Vágner, Lukáš ; Řiháček, Jan (referee) ; Jopek, Miroslav (advisor)
The project elaborates the design of the new technology production of the developed shape of the component, which is part of the drum break. The material of the component is structural steel S355J2C. The annual series produced is 100,000 pieces. From the possible production variants, the production by progressive cutting was chosen as the most suitable. Based on a literature study of the issue, an optimal method of production was proposed. The coil blank is fed to the designed tool by an unwinding and straightening device. The tool is clamped in the selected press LDO 800 A/S with the nominal forming force 8 MN. According to the economic calculations, the selling price of one manufactured part was set at 195 Kč. Production becomes profitable after making 55 283 parts.
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CNC Applications in Forming Processes
Pobořil, Martin ; Jopek, Miroslav (referee) ; Řiháček, Jan (advisor)
This thesis presents the study on CNC control and its usage in forming processes. It analyses the main elements which are essential for functionality of computed numerically controlled processes. It also comprises the basics of CNC programming and related software programmes. Individual technologies of forming are covered in terms of fundamental principles. Subsequently the technologies are described in relation to the CNC control – in theory and also the specific examples of machines and software programmes are given. The thesis considers advantages and disadvantages of each technology and its suitability for use in given application.
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Production of gully
Švejda, Jakub ; Jopek, Miroslav (referee) ; Podaný, Kamil (advisor)
The project elaborated design of technology production of the gully – the rotational extract with flange from the deep drawing corrosion resistant sheet iron 1.4301. Pursuant to of the literary pursuit and calculation was designed drawing without thinning the wall in two operation and that in one instrument with two bottom holders enabling their combination into one stroke. The drawing instrument makes use of as standardised components as construction elements calculated using calculations and consist of three parts. The bottom and upper are magnetically clamped on the hydraulic drawing press Dieffenbacher PO 250, with nominal tensile force 2500 kN. Both drawing punches and drawing dies are produced from alloyed instrumental steel 19 436.9 heat-worked according to drawing documentation.
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Production of plough share screw
Hladík, Milan ; Jopek, Miroslav (referee) ; Forejt, Milan (advisor)
The bachelor's thesis presents a design of plow screw production technology used to attach the blade to the plow frame. The screw is made of structural steel 14,140, in a production series of 120,000 pcs / year. From the possible technologies, the technology of volume cold forming was chosen. From the literature sources of the issue of volume cold forming, the optimal procedure of screw production was proposed. With the help of design, technological and control calculations, a machine was designed and subsequently a production tool, for which drawing documentation was prepared. With the help of technical - economic evaluation, the costs of component production were compared using volume forming and machining.
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Manufacturing of the water siphon by sheet metal forming
Toufar, Jan ; Lidmila, Zdeněk (referee) ; Jopek, Miroslav (advisor)
The thesis presents a design for the manufacturing of a foul air trap made of chromium-nickel austenitic stainless steel resistant to corrosion 1.4301. In regards to the rotationally symmetrical shape of the air trap, the most fitting technology for manufacturing was deep drawing without thinning of the side and for the preparation of the blank shearing. The selected method of drawing, results in the necessity to utilize a triple action press, which allows for the optimal connection of all selected technologies into one combined tool. All technological calculations were determined and examined. Based on these calculations, a tool was designed. In this tool, the component is assembled out of a coil in three operations of one stroke. The selected machine for production is the press Dieffenbacher PO 250.
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Production of a part of the TV bracket
Vodák, Marek ; Jopek, Miroslav (referee) ; Podaný, Kamil (advisor)
This master’s thesis is focused on the design of the technology to produce a part of the TV bracket. The part is made of steel sheet with a thickness of 2.5 mm. The structural steel S235JR was chosen as the most suitable material with following powder coating. From the possible variants, the production by progressive forming tool was chosen with respect to production requirements and a series size of 30 000 pieces by year. The part will be made in seven steps in designed tool and the total required force is 1013 kN. The production will take place on a mechanical press PCK12 from Bliss-Bret with a maximum force of 1250 kN. The final price of the part is 39.4 Kč.
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