|
|
An analysis of the heat-affected surface layer after grinding of the bearing rings
Filípek, Timotej ; Kalivoda, Milan (referee) ; Jaroš, Aleš (advisor)
The object of this bachelor thesis is a determination of the causes of burns origin at the surface layer of a workpiece after a grinding process and their elimination. The first chapter is focused on the description of the grinding technology, grinder types and grinding tools. The second chapter deals with the characterisation of the process fluids, their use and suitability depending on the cut conditions and the material. The third chapter explains what a burn is, the causes of its origin and the ways of subsequent elimination of this adverse event. The experimental part – performed in the Schaeffler Skalica, spol. s r.o. company – deals with the origin of the heat affected surface layer due to improper dressing grinding parameters and improper choice of intervals between dressing processes of the grinding wheel. At the experiment two different grinding wheels were used; subsequently, they were compared to each other from the point of view of suitability for the machining process. The final chapter comprises the experimental part assessment and a summary of the findings in this topic.
|
|
|
Technological and economic analysis of the production for the automotive industry
Sedláková, Eva ; Petrenec, Martin (referee) ; Píška, Miroslav (advisor)
The thesis deals with an analysis of an existing technology of thread forming under various technological parameters used in car industry. Furthermore, it characterizes metric threads, their production and quality control, forming taps, process fluids and other process parameters. In the experimental part the experimental tests with a conventional and CNC drilling machines were carried out. The influence of various process fluids on surface and thread quality have been assessed statistically. The technical-economic evaluation of the process fluids and their effect on the technology has been made. The work supports a beneficial role of soap and polymers as convenient tribological means at thread forming.
|
|
|
Process fluids using during machining
Paučo, Jakub ; Kalivoda, Milan (referee) ; Gregor, Lukáš (advisor)
This bachelor thesis deals with the topic of process fluids used in machining. The first chapter deals with the cutting environment and the functions of process fluids. The second chapter describes the important properties of process fluids and the third chapter describes the various types of fluids and other methods of cooling and lubrication of machining processes. The fourth chapter discusses the use of process fluids in specific machining methods. This involves drilling deep holes and grinding. The following fifth chapter describes dry machining and all its methods. The sixth chapter is devoted to the impact of process fluids on the environment and also lists ecological alternatives to the conventional method of cooling and lubrication of the machining process, such as the use of vegetable oils or the MQL/MQCL method. The last seventh chapter contains a comparison of dry machining and the MQL / MQCL method, as well as an evaluation of future developments in the field of process fluids.
|
|
|
Process fluids using during machining
Paučo, Jakub ; Kalivoda, Milan (referee) ; Gregor, Lukáš (advisor)
This bachelor thesis deals with the topic of process fluids used in machining. The first chapter deals with the cutting environment and the functions of process fluids. The second chapter describes the important properties of process fluids and the third chapter describes the various types of fluids and other methods of cooling and lubrication of machining processes. The fourth chapter discusses the use of process fluids in specific machining methods. This involves drilling deep holes and grinding. The following fifth chapter describes dry machining and all its methods. The sixth chapter is devoted to the impact of process fluids on the environment and also lists ecological alternatives to the conventional method of cooling and lubrication of the machining process, such as the use of vegetable oils or the MQL/MQCL method. The last seventh chapter contains a comparison of dry machining and the MQL / MQCL method, as well as an evaluation of future developments in the field of process fluids.
|
|
|
An analysis of the heat-affected surface layer after grinding of the bearing rings
Filípek, Timotej ; Kalivoda, Milan (referee) ; Jaroš, Aleš (advisor)
The object of this bachelor thesis is a determination of the causes of burns origin at the surface layer of a workpiece after a grinding process and their elimination. The first chapter is focused on the description of the grinding technology, grinder types and grinding tools. The second chapter deals with the characterisation of the process fluids, their use and suitability depending on the cut conditions and the material. The third chapter explains what a burn is, the causes of its origin and the ways of subsequent elimination of this adverse event. The experimental part – performed in the Schaeffler Skalica, spol. s r.o. company – deals with the origin of the heat affected surface layer due to improper dressing grinding parameters and improper choice of intervals between dressing processes of the grinding wheel. At the experiment two different grinding wheels were used; subsequently, they were compared to each other from the point of view of suitability for the machining process. The final chapter comprises the experimental part assessment and a summary of the findings in this topic.
|
|
|
Technological and economic analysis of the production for the automotive industry
Sedláková, Eva ; Petrenec, Martin (referee) ; Píška, Miroslav (advisor)
The thesis deals with an analysis of an existing technology of thread forming under various technological parameters used in car industry. Furthermore, it characterizes metric threads, their production and quality control, forming taps, process fluids and other process parameters. In the experimental part the experimental tests with a conventional and CNC drilling machines were carried out. The influence of various process fluids on surface and thread quality have been assessed statistically. The technical-economic evaluation of the process fluids and their effect on the technology has been made. The work supports a beneficial role of soap and polymers as convenient tribological means at thread forming.
|
guest ::
