|
FEM for machining simulation
Vojtek, Aleš ; Madaj, Martin (referee) ; Zouhar, Jan (advisor)
The introduction to turning basics, chip separation process, cutting force generation and description of the finite element method. With this knowledge, a cutting simula-tion of AISI 1045 steel was done for 3 different rake angles, which was simplified by using an orthogonal machining model. The next simulation was cutting of AISI 6150 steel with the use of a 3D model of the grooving insert. The results of these simulations were then compared to the experimental results, and feasibility of finite element method was determined together with future recommendations for acquiring more pre-cise results.
|
| |
| |
|
Large Turning Centres
Nábělková, Irena ; Jaroš, Zdeněk (referee) ; Blecha, Petr (advisor)
This bachelor's thesis is dedicated to large turning centres. The first part thesis is the summary of large turning centres, their description and types. Usage possibilities of different large turning centres in cutting operations are mentioned too. In the second part, the calculating proposition of a chosen component of large turning centre is solved. This component is spindle-drive. Calculating proposition contains calculation of cutting force, power, total efficiency, utile work and energy.
|
|
Technology solution with cutting operation of "cover" component
Chlád, Luboš ; Osička, Karel (referee) ; Kalivoda, Milan (advisor)
In mentioned solution technology of cover part is processed component analysis, proposal of semi-finished product and production technology. In this thesis are selected concrete cutting machines, tools and technological process is elaborated. At the end the techno-economic evaluation is done. This evaluation deals with calculation of times for separate cutting operations, number of machines, tools and workers.
|
| |
|
Solution turning technology of part "víko" with coated cutting tools
Prokop, Karel ; Humár, Anton (referee) ; Kalivoda, Milan (advisor)
In this bachelor´s thesis is processed analysis of part called cover and there is also processed proposal of the technology its manufacturing. Into proposal of manufacturing are included conventional tools which are compared with different type of manufacturing by tool called EcoCut. For both varieties is elaborated technological process, instruction for turning with counted mechanical times and consumption of changeable cutting tips.
|
|
Technology solution of "konzola" component in condition of a small firm
Štegnerová, Kateřina ; Slaný, Martin (referee) ; Kalivoda, Milan (advisor)
This work deals with the solution technology component of the console. There is an evaluation of technological principles, functionality and the suggestion of optimize. Stock, machines, tools and gauges for each operation are selected according to conditions of the company. For each operation are determined cutting conditions and production time. There are two versions of the production process. Additionally these two versions are evaluated. The console is also analyzed in terms of stress-strain relations, finite elements, which appear critical points. In conclusion, these results are judged.
|
|
Manual programming of CNC machines
Stránský, Michal ; Sedlák, Josef (referee) ; Píška, Miroslav (advisor)
Theme of my bachelor thesis is focused on the manual programming of CNC machines. The thesis is divided into 4 parts. First part is focused on the history and introduction of programming of CNC machines. Second part explains manual programming of CNC and its place in manufacture process. The third part is focused on a automatization of manual programming works. Last part of the bachelor thesis contains a program made with the SINUMERIK 840D control system.
|
|
Regenerative chatter in turning
David, Václav ; Jaroš, Aleš (referee) ; Fiala, Zdeněk (advisor)
Regenerative chatter in turning negatively affects the cutting process, the tool live and the machined surface. In this work is a vibration discriebed by using mathematical formulas or terms. There are listed some causes of creation vibration in turning and some basic methods of complete removal or partial reduction. The second part of this work contains examples of measure and analysis in connection with using of modern software.
|