National Repository of Grey Literature 166 records found  1 - 10nextend  jump to record: Search took 0.01 seconds. 
Design of cartridge spindle for turning machines
Žádník, Lubomír ; Tůma, Jiří (referee) ; Pavlík, Jan (advisor)
The diploma thesis deals with the design of a built-in headstock of a turning center. The aim of the work is the design of a spindle for machines up to 10 kW. The spindle is driven by a two-speed gearbox and a belt drive. In the introduction, the work deals with the description of individual parts of the turning headstock. A design proposal is performed, accompanied by a number of technical calculations. The result of the work is a 3D model, drawing documentation and calculation report.
Virtual twin and predictive maintenance
Kotrba, Martin ; Holub, Michal (referee) ; Tůma, Jiří (advisor)
This diploma thesis deals with the design of a virtual twin of cross table MCV 754 QUICK from the Czech manufacturer Kovosvit MAS. The research part describes the basic principles of predictive maintenance methodology and virtual twin technology. The practical part includes a simplification of the initial cross table model. This model was then transferred to the simulation software MSC Adams, where it was optimized so that its behavior corresponds as closely as possible to the physical device. Several simulations were subsequently performed on the model. Then a concept for a predictive method for calculating the remaining service life of individual sections of the ball screw was presented. Simulations performed on a virtual twin served as a source of data to test the proposed method.
Design of single purpose assembly device for automotive industry
Denk, Marek ; Tůma, Zdeněk (referee) ; Tůma, Jiří (advisor)
The subject of this master’s thesis is a design of a single-purpose assembly machine for automotive industry. The assembled component is a part of a headlight of a passenger car consisting of a heatsink, a PCB and a reflector which are mutually connected by screws. The result of the thesis is detailed 3D model of the single-purpose machine made in Creo Parametric software and drawing documentation of the designed machine.
Design of CNC lathe milling head with adjustable tilt
Horák, Vítězslav ; Pavlík, Jan (referee) ; Tůma, Jiří (advisor)
This thesis deals with design of CNC lathe milling head with B axis. Thesis includes research in CNC turning machines, their tool systems and overview of manufacturers of milling B axis. It also includes calculation of machining forces, design of spindle and design of B axis including necessary calculations. Part of this thesis is also 3D model and assembly drawing, 2 manufacturing drawings and list of items.
Design of threading head with automatic reversing
Žebrák, Matěj ; Pavlík, Jan (referee) ; Tůma, Jiří (advisor)
This bachelor’s thesis deals with the design of reversing tapping head. The thesis is divided into two parts. First part is devoted to an overview of technologies for the thread producing focusing to tapping and research in field of tapping heads. Second part contains design of reversing tapping head including the necessary calculations.
Design of spindlespeeder
Závada, Otakar ; Pavlík, Jan (referee) ; Tůma, Jiří (advisor)
This bachelor thesis deals with conceptual design of high speed spindle based on cutting conditions. Research part of thesis describe each types of high speed spindle based of their drive. Next chapter are documented cutting conditions which are corresponded with experience. High speed spindle faced these act most of the time. Cutting conditions show output conditions of planetary gearbox which is described in next part of thesis. All the experience are used in conceptual design. The drawings contains of assambly drawing and drawing of selected components. The drawings are based on model made in 3D CAD system
Workshop straightening hydraulic press
Ožvoldík, Daniel ; Tůma, Jiří (referee) ; Omes, Jiří (advisor)
This work deals with the design of a hydraulic workshop straightening press. This press is used primarily for basic operations needed in manufacture, such as straightening the steel plates or shafts. Furthermore, it is be used for bearing assembly or bending metal sheets. The essential parts of this work are the design of the electro-hydraulic circuit, the design of moving the press frame and the analysis of the mechanics of the material.
Design of NC hydromechanical vise
Václavek, Marek ; Pavlík, Jan (referee) ; Tůma, Jiří (advisor)
This thesis focuses on design of a machine vise with a hydromechanical clamping force multiplier. The thesis is split into three main sections: study of workholding methods and fixtures with emphasis on vises, introduction and explanation of the proposed design and necessary calculations for the proposed design.
Design of CNC lathe broaching head
Boháč, Josef ; Knoflíček, Radek (referee) ; Tůma, Jiří (advisor)
This bachelor’s thesis deals with the design of construction of broaching head for CNC lathe. This thesis is divided into research part, computational and construction part. The research part is dealing with the CNC lathes and tools with focus on the BMT and VDI tool turrets. Based on the outputs from the research, design parameters and suitable construction solution was chosen. The chosen construction solution uses the crank mechanism. This part is followed by the computational part which includes strength calculations of construction parts and other parameters such as cutting force. The last part is dealing with the construction of the broaching head itself. This thesis also includes a 3D model, drawings of selected parts and an assembly drawing.
Design of sheet bender
Kazda, Tomáš ; Tůma, Jiří (referee) ; Pavlík, Jan (advisor)
This bachelor’s thesis deals with the design of a sheet metal bending machine, which is intended for home workshops, or common craft operations. The first part of the thesis contains a overview of similar machines, that are currently available in the shops. In the second part of the thesis was selected the most optimal design, which arose from the three conceptual designs. Each design was rated and on the basis of a multi-criteria analysis were selected the best one. Final design were processed to the 3D model, which have a technical calculations and technical drawings too. After this were made a economic calculations of a final design, including a comparison with a selected models from the research part of this thesis.

National Repository of Grey Literature : 166 records found   1 - 10nextend  jump to record:
See also: similar author names
2 Tuma, Josef
17 TŮMA, Jan
14 TŮMA, Jiří
14 TŮMA, Jíří
1 Tůma, J.
3 Tůma, Jakub
17 Tůma, Jan
1 Tůma, Jaroslav
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