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Finishing machining of hard-to-machine materials
Filípek, Timotej ; Varhaník, Matúš (referee) ; Píška, Miroslav (advisor)
The Master‘s thesis focuses on processing of hard-to-machine materials by the finishing machining methods. The first chapter comprises division and characteristics of finishing technologies in the field of machining processes. The chapter following includes division and characteristics of the hard-to-machine materials. The experimental part – another significant part of the thesis – is focused on grinding of mostly bearing rings made of hard-to-machine materials. The aim of the experimental part is to compare and subsequently assess the use of various kinds of grinding wheels in the grinding process of a given workpiece material. Several parameters are examined from the technological and economic point of view. The assessment of the experimental part provides an overview on the advantages and disadvantages of the use of the grinding wheels in the grinding process of a given material for large-scale production. The conclusion is a summary of the results obtained in the experimental part.
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Machining of rotating parts of hardened steel focusing on the surface condition
Bukovský, Petr ; Osička, Karel (referee) ; Chladil, Josef (advisor)
The thesis deals with machining of rotating parts made from hardened steel. The introductory chapter describes the problems of turning and grinding. The next chapter deals with heat treatment and machined materials. The next lists the used cutting materials. Criteria for evaluating the quality of the surface. A selection of cutting materials for the machining of hardened steels from selected manufacturers. The final chapter is a comparison of the described technologies.
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Machining of hardened steels
Veselý, Ondřej ; Osička, Karel (referee) ; Jaroš, Aleš (advisor)
Diploma thesis on Machining hardened steels is focused on the analysis of longitudinal turning of hardened steel 14 109 by using a tool from PKNB in terms of measuring the force load using a dynamometer and then evaluating the surface quality. The theoretical part deals with the issue of turning technology, cutting materials and heat treatment of steel. In the practical part, the influence of cutting conditions on the resulting values was assessed during the experiment. Twelve samples with different combinations of cutting conditions were tested, then was selected a sample that met the criterion of combining minimum cutting forces values and surface quality. The experiment shows that force load values can be achieved twice less by combining cutting conditions with an appropriate combination.
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Machining of quenched steels
Kosmák, Jaroslav ; Zemčík, Oskar (referee) ; Chladil, Josef (advisor)
Diploma thesis deals with machining of hardened steels. In the introductory section it is described the physical process of cutting and basic used technologies of machining. The next chapter provides an overview of cutting materials. Other chapters deal with the workpiece material and heat treatment. Furthermore, there is made a comparison of the cutting conditions while machining of hardened steels by tools from selected manufacturers. As the conclusion there is the economic evaluation.
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Machining of Hardened Steel on CNC Machines
Nováková, Eliška ; Prokop, Jaroslav (referee) ; Kalivoda, Milan (advisor)
The bachelor thesis deals with the topic of machining of hardened steels on CNC machines. In the first part there is the description of the company, in which the particular hardened part was machined. The next part of the thesis focuses on properties of hardened steel and their suitability for machining. The middle part of the work states the basic machining technologies used in the company and programming of the CNC machines. Further there are described the materials of the cutting tools for machining of the steel from selected producers/manufacturers. At the end of this thesis the machining of the particular hardened component is described, and the evaluation of the technology procedure is made.
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Machining of hard-to-machine materials by turning
Švorc, Josef ; Fiala, Zdeněk (referee) ; Píška, Miroslav (advisor)
The thesis is focused on machining of hard-to-machine materials. In the theoretical part hard-to-machine materials are divided and characterized. Furthermore, the thesis specifies hardened steels and their heat treatment, machinability and mechanism of wear and chip formation. There are tool materials and their classes suitable for machining hardened steels. The practical part deals with the influence of the cutting conditions on the roughness of the machined surface when turning hardened steel.
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Finishing machining of hard-to-machine materials
Filípek, Timotej ; Varhaník, Matúš (referee) ; Píška, Miroslav (advisor)
The Master‘s thesis focuses on processing of hard-to-machine materials by the finishing machining methods. The first chapter comprises division and characteristics of finishing technologies in the field of machining processes. The chapter following includes division and characteristics of the hard-to-machine materials. The experimental part – another significant part of the thesis – is focused on grinding of mostly bearing rings made of hard-to-machine materials. The aim of the experimental part is to compare and subsequently assess the use of various kinds of grinding wheels in the grinding process of a given workpiece material. Several parameters are examined from the technological and economic point of view. The assessment of the experimental part provides an overview on the advantages and disadvantages of the use of the grinding wheels in the grinding process of a given material for large-scale production. The conclusion is a summary of the results obtained in the experimental part.
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Machining of hardened steels
Veselý, Ondřej ; Osička, Karel (referee) ; Jaroš, Aleš (advisor)
Diploma thesis on Machining hardened steels is focused on the analysis of longitudinal turning of hardened steel 14 109 by using a tool from PKNB in terms of measuring the force load using a dynamometer and then evaluating the surface quality. The theoretical part deals with the issue of turning technology, cutting materials and heat treatment of steel. In the practical part, the influence of cutting conditions on the resulting values was assessed during the experiment. Twelve samples with different combinations of cutting conditions were tested, then was selected a sample that met the criterion of combining minimum cutting forces values and surface quality. The experiment shows that force load values can be achieved twice less by combining cutting conditions with an appropriate combination.
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|
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Machining of hard-to-machine materials by turning
Švorc, Josef ; Fiala, Zdeněk (referee) ; Píška, Miroslav (advisor)
The thesis is focused on machining of hard-to-machine materials. In the theoretical part hard-to-machine materials are divided and characterized. Furthermore, the thesis specifies hardened steels and their heat treatment, machinability and mechanism of wear and chip formation. There are tool materials and their classes suitable for machining hardened steels. The practical part deals with the influence of the cutting conditions on the roughness of the machined surface when turning hardened steel.
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