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CNC Programming if the Single Point Incremental Forming
Ladecký, Tomáš ; Slaný, Martin (oponent) ; Píška, Miroslav (vedoucí práce)
Nowadays there is an increasingly demanding need for the development of agile manufacturing techniques that can easily be adaptable to a constant introduction of new products in the market. Single point incremental forming (SPIF) is a new innovative and feasible solution for the rapid prototyping and the manufacturing of small batch sheet parts. The process is carried out at room temperature (cold forming) and requires a CNC machining centre, a spherical tip tool and a simple support to fix the sheet being formed. This thesis provides a better understanding of the influence of the tool radius in the occurrence of fracture without previous necking or fracture following previous necking as in case of conventional stamping, which is a matter of ongoing international discussion around the formability mechanism of SPIF. It is also analyzed the influence of the corner radius in SPIF made parts and a new pyramid test was created in order to get strain measurements in a large area of the first quadrant of the principal strain space and as consequence to reduce the overall number of tests. The previous results of Skjoedt [1] showing that the fracture forming limit determined under simple (monotonic) strain paths can be applied to check formability limits in multi-stage SPIF were confirmed and the difference in formability between the AA1050-H111 and the same material annealed was checked. Finally, as a logical continuation of the experimental work previously performed, the thesis was extended to multi-stage SPIF with the objective of replacing conventional fabrication procedures by new manufacturing routes based on single point incremental forming. The main contribution of this thesis to multi-stage SPIF was the successful manufacturing of a pyramid with vertical walls and the production of a prototype part for a home appliance application.
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Applications forming limit diagrams
Smrž, Peter ; Varjan, Matúš (oponent) ; Podaný, Kamil (vedoucí práce)
Thesis contains an overview of four types of forming limit diagrams which includes Keeler-Goodwin diagrams, diagrams of ultimate degree of deformation, diagrams of limit plasticity and deformation-mechanism maps. There are detaily described experimental and theoretical methods of obtaining and construction of limit diagrams. Part of this thesis contains an practical application of these types and their suitability for various forming technology.
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Technologické zkoušky trubek
Horák, Michal ; Staněk, Vojtěch (oponent) ; Peterková, Eva (vedoucí práce)
Předložený projekt vypracovaný v rámci bakalářského studia B-STI Strojní inženýrství je zaměřen na problematiku technologických zkoušek trubek. Na základě literární a internetové studie je v práci rozebrán princip jednotlivých technologických zkoušek, postup jejich vyhodnocení a oblasti použití. Pro ucelenou představu o zkouškách trubek jsou v práci uvedeny také základní informace o zkouškách mechanických.
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CNC Programming if the Single Point Incremental Forming
Ladecký, Tomáš ; Slaný, Martin (oponent) ; Píška, Miroslav (vedoucí práce)
Nowadays there is an increasingly demanding need for the development of agile manufacturing techniques that can easily be adaptable to a constant introduction of new products in the market. Single point incremental forming (SPIF) is a new innovative and feasible solution for the rapid prototyping and the manufacturing of small batch sheet parts. The process is carried out at room temperature (cold forming) and requires a CNC machining centre, a spherical tip tool and a simple support to fix the sheet being formed. This thesis provides a better understanding of the influence of the tool radius in the occurrence of fracture without previous necking or fracture following previous necking as in case of conventional stamping, which is a matter of ongoing international discussion around the formability mechanism of SPIF. It is also analyzed the influence of the corner radius in SPIF made parts and a new pyramid test was created in order to get strain measurements in a large area of the first quadrant of the principal strain space and as consequence to reduce the overall number of tests. The previous results of Skjoedt [1] showing that the fracture forming limit determined under simple (monotonic) strain paths can be applied to check formability limits in multi-stage SPIF were confirmed and the difference in formability between the AA1050-H111 and the same material annealed was checked. Finally, as a logical continuation of the experimental work previously performed, the thesis was extended to multi-stage SPIF with the objective of replacing conventional fabrication procedures by new manufacturing routes based on single point incremental forming. The main contribution of this thesis to multi-stage SPIF was the successful manufacturing of a pyramid with vertical walls and the production of a prototype part for a home appliance application.
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Technologické zkoušky trubek
Horák, Michal ; Staněk, Vojtěch (oponent) ; Peterková, Eva (vedoucí práce)
Předložený projekt vypracovaný v rámci bakalářského studia B-STI Strojní inženýrství je zaměřen na problematiku technologických zkoušek trubek. Na základě literární a internetové studie je v práci rozebrán princip jednotlivých technologických zkoušek, postup jejich vyhodnocení a oblasti použití. Pro ucelenou představu o zkouškách trubek jsou v práci uvedeny také základní informace o zkouškách mechanických.
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Applications forming limit diagrams
Smrž, Peter ; Varjan, Matúš (oponent) ; Podaný, Kamil (vedoucí práce)
Thesis contains an overview of four types of forming limit diagrams which includes Keeler-Goodwin diagrams, diagrams of ultimate degree of deformation, diagrams of limit plasticity and deformation-mechanism maps. There are detaily described experimental and theoretical methods of obtaining and construction of limit diagrams. Part of this thesis contains an practical application of these types and their suitability for various forming technology.
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