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Drive system by serial connection of rotary hydromotors
Pokorný, Pavel ; Knoflíček, Radek (referee) ; Omes, Jiří (advisor)
The thesis deals with the problem of large-capacity manipulation of large forgings with forging manipulator. It describes current techniques, their characteristics, advantages and disadvantages. Based on the analysis of these techniques, the thesis introduces design of the connection of the hydraulic circuit for the drive of the traveling traction wheels of the forging manipulator QKK 100 by ŽĎAS a.s. focusing on simplicity, trouble-free operation, efficiency, economy, change of speed and torque, and possibility of modification according to the current load.
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Conceptual study of the gripping mechanism for the forging
Smolík, Martin ; Malášek, Jiří (referee) ; Pokorný, Přemysl (advisor)
The result of the work is an overview study of the technology of gripping forgings and Conceptual design of the gripping mechanism of the railbound forging manipulator. Main dimensions are based on the entered values for the load capacity of the manipulator up to 20 tons and the limiting clamping diameters of 245 mm to 1250 mm. The construction of the mechanism is based on technical solutions used by ŽĎAS a.s. within the model line of QKK manipulators. Subsequently, a suitable kinematic solution was proposed, supplemented by dimensions corresponding to the assignment. Basic analytical calculations are performed to verify the correct choice of the dimensions of the connecting pins. The final form of the mechanism is shown in the attached drawing documentation.
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Analysis of a Forging Process of the Jaw Turnout Lock Hook
Barták, Jan ; Štroner, Marek (referee) ; Řiháček, Jan (advisor)
The thesis is focused on optimalization of jaw turnout lock hook forging process which is used in rail transport and is forged from steel of 13 240 grade. Production process of the hook, that is being used in Královopolská kovárna s.r.o. company now, leads to fold defect in the inner side of curved part formation. Conditions of the folds formation were defined using the numeric simulation of this process in Simufact Forming software. After that improvements such as change of semi-finished product size, change of geometry of ancestor shape, bending tools and forging die were made according to linear study of this problematics. These volumetric and geometric changes were verified using the simulation in software and relocation defect did not appear.
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Forging of a hinge eyebolt
Puklický, Vladimír ; Štroner, Marek (referee) ; Lidmila, Zdeněk (advisor)
Bachelor thesis developed in the bachelor degree addresses the production process eyebolt combination of the two technologies volume thermofotming. Forging the forging and die forging slug for making the final shape of the part. Eyebolt will be produced in a series of 5,000 units / year of structural steel ČSN 11 375.1 with a carbon content of 0.2 % C. The material is supplied in the form of round bars with a diameter of 135 mm and a length of 6000 mm . From this it will be cut smaller pieces using a 172 mm long industrial scissors ScKU 800 Based on the literature study and fitting the calculations was chosen for forging hammer KHZ 4 A from Šmeral Brno as and drop forging hammer with the designation L 9 mg in 2040 by a French company Bché . Semi-finished product is heated in a gas chamber furnace RKG 08.9.03-12 with an output of 600 kW. Forging the trimming on the trim press LKOA 200th Dies are made of tool steel DIN 19 663.
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Machinery used in an open die forging
Novák, Libor ; Šlais, Miroslav (referee) ; Podaný, Kamil (advisor)
For production of components, which are made by open die forging, are used forging hammers and hydraulic presses. The project contains a dividing of machines, short description, advantages and disadvantages and using of concrete types of forging hammers and hydraulic presses in practice. Advantages of forging hammers are simple construction, high range of choice from many types and simple maintenance. Disadvantages are big shakes and danger of accident. Forging hammers can be chosen from spring, pneumatic, hydraulic and steam air types with or without acceleration. Hydraulic presses are divided into push -down presses (two and four - column presses) and pull - down presses (two and four - column presses). Advantages consist in simple operating and controlling via computer. Disadvantages are complicated construction and difficult maintenance.
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Workshop hydraulic press
Budík, Tomáš ; Tůma, Jiří (referee) ; Omes, Jiří (advisor)
This work deal with workshop hydraulic press to moulding heated rod blanks with the possibility of adjusting the main pressing cylinder depending on the operating technology. We analyze issues of design and calculation of the hydraulic circuit and the hydraulic, electrical and electro-hydraulic components. In the end we solve the elastic deformation analysis of the machine using the finite element method.
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Issues of open die forging
Máčala, Daniel ; Štroner, Marek (referee) ; Podaný, Kamil (advisor)
The thesis submits the overview about issues of open die forging. It is written based on literary studies of theoretical basis with addition of pictures regarding the problematics. It generally deals with open die forging, its principles and sorting. Then the most frequently used initial semi-finished products, its heating and types of machines, are described. The main focus is put on basic forging operations which are concretely described. For the better image of usage of open die forging the examples of forging from manufacturing companies are introduce.
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Conceptual study of the gripping mechanism for the forging
Smolík, Martin ; Malášek, Jiří (referee) ; Pokorný, Přemysl (advisor)
The result of the work is an overview study of the technology of gripping forgings and Conceptual design of the gripping mechanism of the railbound forging manipulator. Main dimensions are based on the entered values for the load capacity of the manipulator up to 20 tons and the limiting clamping diameters of 245 mm to 1250 mm. The construction of the mechanism is based on technical solutions used by ŽĎAS a.s. within the model line of QKK manipulators. Subsequently, a suitable kinematic solution was proposed, supplemented by dimensions corresponding to the assignment. Basic analytical calculations are performed to verify the correct choice of the dimensions of the connecting pins. The final form of the mechanism is shown in the attached drawing documentation.
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Analysis of a Forging Process of the Jaw Turnout Lock Hook
Barták, Jan ; Štroner, Marek (referee) ; Řiháček, Jan (advisor)
The thesis is focused on optimalization of jaw turnout lock hook forging process which is used in rail transport and is forged from steel of 13 240 grade. Production process of the hook, that is being used in Královopolská kovárna s.r.o. company now, leads to fold defect in the inner side of curved part formation. Conditions of the folds formation were defined using the numeric simulation of this process in Simufact Forming software. After that improvements such as change of semi-finished product size, change of geometry of ancestor shape, bending tools and forging die were made according to linear study of this problematics. These volumetric and geometric changes were verified using the simulation in software and relocation defect did not appear.
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