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Automatická výměna malých a středních obrobků u CNC strojů
Tejkl, Michal ; Pavlík, Jan (referee) ; Blecha, Radim (advisor)
The subject of this bachelor thesis is a professional research, dealing with automatic workpiece replacement for CNC machines. The research describes not only the separation of workpiece replacement systems but also the possibility of clamping them. An integral part of AVO is the transport of workpieces between the CNC machine and the tray. The final topic in this work are the trays that extend production times without the need for operator intervention. The reader gains an overview of the possibilities and principles of AVO.
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Bidirectional pneumatic stepper motor
Veselý, Václav ; Pavlík, Jan (referee) ; Kolíbal, Zdeněk (advisor)
The diploma thesis Bidirectional pneumatic stepper motor concentrates on a step shaft rotation in the presented scheme of a kinematic mechanism. The introductory research part of the diploma thesis lists various types of pneumatic components and the analysis of elements in pneumatic circuits is provided. The following section of the thesis concentrates on designing a new scheme of a pneumatic stepper and construction of a functional mock-up. The final part of the diploma thesis offers a summary and final evaluation of the design and offers subsequent alterations for its further usage.
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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.
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Automatic tool changer
Rydlo, Andrej ; Pavlík, Jan (referee) ; Blecha, Radim (advisor)
Adressed topic of the thesis is automatic tool change in industrial machining. Core work is done on construction design of automatic tool changer. Designed manipulator grabs the tool by linear movement and is meant to be used with unspecified horizontal machining centre. Individual working cells include design of grippers, extending motion of the arm, rotary motion of the arm and linear motion of the whole manipulator. Essential part of the thesis are technical calculations and simulations.
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Crank press 250 with direct drive
Čupr, Pavel ; Pavlík, Jan (referee) ; Omes, Jiří (advisor)
This thesis deals with the design of the single point crank press with direct drive. This crank press has an O-shaped stand and an access to the workspace from two sides. The introductory part of this paper describes the principles of mechanical presses drives, drives arrangement presses with direct drive and some conceptual solution stands. The main part of this work is a calculation of basic drive parameters of the press. There are suggested three design variants. The design with the smallest space requirements and good accessibility to the press working space was chosen. The calculation of the main shaft, the input shaft to the planetary gearing and calculation of brake sizes and the planetary gear to the bend and tough was done. Part of this thesis also includes technical drawing of the assembly press, technical drawing of the drive press, technical drawing of the stand a technical drawing of the satelitte gearwheel.
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Description of linear feed systems of machine tools
Kocanda, Petr ; Pavlík, Jan (referee) ; Blecha, Petr (advisor)
The Work contains a detailed description of parts forming the linear displacement system of machine tools. The Work is also focusing on several producers who deal with this issue. High attention is paid to the merits, qualities and methods on how the making of single machine parts is solved; this is described both from the design and process viewpoints.
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Design of the gantry CNC milling machine with sliding table
Kolář, David ; Holub, Michal (referee) ; Pavlík, Jan (advisor)
This master’s thesis is focused on design of gantry CNC milling machine with sliding table. Thesis includes the review of components of this machines and comparsion of their options. Servo motors , ball screws and linear guides parameters are calculated. Also the suitable software and hardware for the machine control is chosen. Main parts of the machine were analysed using finite elements method. 3D model, drawings and documentation of machine build are included.
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