|
| |
|
|
The drive of the feed coordinate portal machining center through pinion and rack
Malásek, Petr ; Novotný, Lubomír (referee) ; Marek, Jiří (advisor)
This thesis is dealing with determining of technical and economical limits of axis X of portal milling machine driven by gear rack and pinion. And designing drive of axis like this. In chapter overview of the current state of knowledge are researched options of drive systems of linear axis, primarily of using ball screw and couple of pinion and gear rack. Basic parameters of axis X portal milling machines, options of measuring, guiding of axis and electric motors. Then the limit suitability of using pinion and gear rack is determined. In next chapters is designed few variations of arrangements of drives and selected the best one. This arrangement is then designed.
|
|
|
Design of a three-axis manipulator
Vojtěch, Michael ; Tůma, Jiří (referee) ; Holub, Michal (advisor)
The goal of master’s thesis is design of a three-axis manipulator working as x-ray unit. Axis include one rotary and two liner. The work is based on the existing manipulator and the goals are reducing vertical installation space, weight reduction, increasing accuracy and repeatability. Creating 3D model with computational report from available components. There is resulting variant solved with linear motor in this thesis with that there is indicated alternative variant but not dealt with in detail.
|
|
|
Machining of hardened parts
Havlík, Daniel ; Osička, Karel (referee) ; Polzer, Aleš (advisor)
This bachelor thesis is focused on the machining of hardened parts. The beginning of the work is devoted to the analysis of specific materials, 42CrMo4, 42CrMoS4 and 50CrMo4. Next described thing is heat treatment. The main part of this work consists of theoretical analysis turning of hardened parts and theoretical analysis of the thread whirling of ball screw, where the principle of ball screws is also described.
|
|
|
The Impact of Different Manufacturing Technologies and Thermal Processing of Groove Profiles on the Service Life of Ball Screws
Drábek, Michal ; Jaroš, Aleš (referee) ; Sedlák, Josef (advisor)
The aim of this thesis is ball screw service life measurement. Text is divided on two major parts, theoretical one and practical one. Theoretical part describes three basic methods of ball screws manufacturing – rolling, whirling and grinding. Subsequently, methods of heat treatment (inductive and laser hardening) are mentioned. Practical part is devoted to ball screw service life testing and evaluation of results. Tests were carried out on two sets of two ball screws. First set was manufactured by whirling and grinding followed by inductive hardening. Second set was manufactured by grinding followed by inductive hardening in one case and laser hardening in the second one. Test results were evaluated according to international standards.
|
|
|
Design of CNC Milling Machine for Woodworking
Drda, Ondřej ; Zemčík, Oskar (referee) ; Slaný, Martin (advisor)
The thesis deals with the design of a CNC milling machine. The thesis includes a research of machines available on the market and a research of components suitable for the construction of the milling machine. In the next part, the calculation of motors, ball screws and linear guides was carried out. The work includes a complete 3D model and drawing documentation.
|
|
|
Design of a headstock for a machine tool
Sehon, Tomáš ; Marek, Jiří (referee) ; Hermanský, Dominik (advisor)
This master’s thesis deals with design of a headstock for a machine tool. Theoretic part of this thesis provides basic description of a horizontal machine tool. Further it is dedicated to description of a headstock of machines with extensionable work spindle. In a design part firstly optimal variant is chosen by using multicriterial analysis. Necessary calculations were done and chosen variant was developed. Design is realised by 3D CAD model and drawing documentantion.
|
|
|
Linear feed systems in construction of machine tools
Kolaja, Radim ; Opl, Miroslav (referee) ; Blecha, Petr (advisor)
This bachelor thesis deals with the detailed description and division of constructional componets composition of linear feed systems, which are essential part in the construction of machine tools in the manufacturing process. It describes individual subsystems, which are described in details and compared in terms of favorable and unfavorable characteristics for certain working conditions. Out of these possible ways of implementation of linear feed system is initiation one example with an overview of the basic calculations used to design project.
|
|
|
Servodrive Clamping Unit
Šťastný, Libor ; Hampl,, Štěpán (referee) ; Foller, Bronislav (advisor)
Design servodrive clamping unit with pneumatic or mechanic multiplier. Unit has be instrumental to strength clamp parts in tension technical machines. Frame unit’s is complicate from massive and movable clamping board and is self-supporting. Unit has be solution like incorporated modulus. Target is proposal main driving period for movable clamping board. Work up proposal constructional solution, drawing listings, production drawing of the three engaged part of, BOM. Computational report must include calculations drives, constructional knots and their verification and further needed strength calculation and analyses. Proposal treatment tribotechnical knots. Analysis construction from standpoint safety in operation according to NV24/2003 and analysis safety hazards. Part of work must be and economic analysis resultant solution.
|
|
|
Ensure the stability of long ball screws and nuts
Dulava, Štěpán ; Huzlík, Rostislav (referee) ; Marek, Jiří (advisor)
This Master‘s thesis deals with the construction design of the ball screw shaft supports. Designed supports will serve to increase stability of rotating ball screws. In the introduction detailed description of the ball screws is presented including description of the individual parameters of the ball screw. Next part includes parameters of different ball screw properties and design of individual supports with description and design calculations of individual parts of the supports. Concepts of the supports will be designed in compliance with the ball screw product series of the KSK Precise Motion a.s. company.
|
guest ::
