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Manufacturing of the hydraulic pump shaft
Nečas, Zbyněk ; Řiháček, Jan (referee) ; Císařová, Michaela (advisor)
The thesis deals with the design of the production technology of the drive shaft of a hydraulic pump, the main element of which is the groove inside the shaft cavity. This component will be manufactured by Metaldyne Oslavany, spol. s.r.o., where the production series was set at 300,000 pieces per year. The material of the component was also specified as DIN 20CrMo5 steel, which will be purchased for production in bars with a diameter of 42 mm. The workpiece will then be cut from them using circular saws. After evaluating the specified requirements, based on the analysis of the specifications, the cold forming technology is chosen for production, specifically the combination of extrusion and upsetting, which the thesis focus on. Three basic production processes were put in place, for which their manufacturability was verified using the Simufact Forming 2023.4 simulation software. For the most suitable production variant, the flow stress, deformation resistance, and forming forces are calculated for each operation, which were then compared with the results of numerical simulation. According to the highest calculated force, a suitable machine was chosen from the company's current machine park, specifically a conventional single-operation hydraulic press SMG HZPU 320 with a nominal force of 320 tons. Then, tool sets were designed for each of the forming operations, when it was found that in all operations the die must be encapsulated using two clamps. The LP4-Kopřiva program was used to determine the optimal contact diameters, contact pressures and other encapsulation parameters.
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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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Production of a hollow pin by cold forming
Šanca, Kristián ; Řiháček, Jan (referee) ; Jopek, Miroslav (advisor)
The hollow pin with a length of 45 mm and a diameter of 28 mm made of 12 050 steel is produced by cold cold forming. It showed defect-translation and the goal was to eliminate it by optimization. 10 variants were proposed, of which No. 10 was without defects and the goal of the work was met. The forming process was simulated by Simufact Forming software. The semi-finished product is a block made of a round bar 18 x 35.68. The part is manufactured on a process tool for 4 operations by a combination of upsetting and extrusion. The machine used is the CBF-204L automatic machine. The required force is 3 042 kN. The price of 1 piece is CZK 19.59. 120,000 pieces are produced annually.
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Housing production by cold forming
Kouřil, Jakub ; Kunčická, Lenka (referee) ; Jopek, Miroslav (advisor)
The bachelor thesis is focused on the production of a part by cold forming. The subject of the thesis is the design of the technology of production of a housing with a production rate of 6 000 000 pcs/year by extrusion and tamping. The austenitic stainless steel X5CrNi18-10 is used for the production. Based on simulations, the most suitable geometric configuration of the forming operations was selected. The whole production process consists of a first cutting, two forming and a last machining and radnishing operation. Based on the calculated forming force of 175,6 kN and the required power of 425 W, the CHUN ZU CBF-83S automatic forming machine was selected. At the same time, the tool is designed and in the end a techno-economic evaluation is carried out, which also includes the calculation of the piece price considering a 15% profit, which amounts to 1,24 CZK.
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Production of a hollow pin by cold forming
Šanca, Kristián ; Řiháček, Jan (referee) ; Jopek, Miroslav (advisor)
The hollow pin with a length of 45 mm and a diameter of 28 mm made of 12 050 steel is produced by cold cold forming. It showed defect-translation and the goal was to eliminate it by optimization. 10 variants were proposed, of which No. 10 was without defects and the goal of the work was met. The forming process was simulated by Simufact Forming software. The semi-finished product is a block made of a round bar 18 x 35.68. The part is manufactured on a process tool for 4 operations by a combination of upsetting and extrusion. The machine used is the CBF-204L automatic machine. The required force is 3 042 kN. The price of 1 piece is CZK 19.59. 120,000 pieces are produced annually.
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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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