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61	Řešení technologie součásti "stopka" / Solution technology of part "stem-arbor" Dudek, Milan January 2013 (has links) This thesis is focused on proposal of new version of production proces of part stem-arbor, proposal of suitable edge tools, which should be used for new verion of production proces a their comparison based on their lifetime. The lifetime has been got from brought out sample production order. There is based on these results suitable edge tools and cutting conditions during machining according to new version of production proces. There is evaluated either quality control or figured out savings in production.
62	Vliv vibrací brousícího vřetene brusky na chvění obrobku při broušení / The influence of the vibrations of the grinding spindle of the grinder on the vibrations of large shafts during machining Hanych, Libor January 2018 (has links) This master's thesis deals with vibrodiagnostics and its use for monitoring of the vibration transmission during grinding of large shafts at Siemens Electric Machines s.r.o. based in Drásov. Diagnostic system for machine tools testing was designed as well as a measurement methodology, which is used to detect the vibration transfer from the grinding spindle to the workpiece. Influences that affect the quality of the ground surface were determined, based on evaluation of measured data. The last part is dedicated to a proposal of a diagnostic and measuring system.
63	Obrábění rotační součásti "těleso" na CNC soustruhu / Machining of rotating Body-part on CNC lathe Dlouhý, Vít January 2020 (has links) This master's thesis is focused on the technology fundamentals of machining for the use of the CNC lathe which was used for machining the required parts are made of stainless steel. In the introduction are mentioned the historical milestones related to machine tools. In the following chapter is analyzed machining process and related fact. A follow-up chapter contains the parameters common to a modern machine tool CNC machines. Followed by the practical part with the characteristics of the machined components. The next chapter includes a selection of CNC lathe for production. Continued by selecting the appropriate cutting tool and adjusting the machine for the given component. They were applied a total of three variants of production with the subsequent evaluation. In conclusion, it became established fact, for example, the advantages of the shape tools or the use of more spindles during the machining.
64	Konstrukce multifunkčního obráběcího centra / Design of multi-functional machining centre Sedlák, Pavel January 2011 (has links) This master thesis deals with the construction of multi-functional machining centre. The theoretical part describes the history of lathes, trends in production of lathes and individual machine parts. The practical part is the structural design of the spindle with positioning in the C axis, the second spindle (including drive in Z axis) and the turret (including drive in the X and Z axis). A 3-D model of the entire lathe assembly modeled in Autodesk Inventor 2010 is also included.
65	Návrh technologie výroby šroubovité drážky / Innovation of manufacturing of helical flute Janištinová, Edita January 2013 (has links) The thesis is focused on the technology of manufacturing of helical flute in the frame servomotor of austenitic chromium-nickel steel with improved machinability. One part of this thesis is a theoretical analysis of stainless steel and more detailed analysis of machined steel SANMAC 304L. The thesis also analyzes the current way of machining in the company VUES Brno s.r.o. and suggests new innovative ways of manufacturing helical flute. Innovative proposals include a technological procedure and a choice of instruments and tools for turning and milling. The means of manufacturing are evaluated from an economic and technical point of view. Conclusion of this thesis contains the assessment of the current way of machining with innovative designs.
66	Kryty pracovního prostoru stroje / Protective Guards of Machine Tool Zlámal, Josef January 2016 (has links) The master thesis deals with the problematics of machine guard. The first part of the thesis is focused on the analysis of machine guards, legislative safety requirements and noise issues. The second part of the thesis describes design and construction of the machine guard in case of the vertical turning centre, TOSHULIN - POWERTURN 2000, including the calculation of noise reduction.
67	AI Based Modelling and Optimization of Turning Process Kulkarni, Ruturaj Jayant 08 1900 (has links) Indiana University-Purdue University Indianapolis (IUPUI) / In this thesis, Artificial Neural Network (ANN) technique is used to model and simulate the Turning Process. Significant machining parameters (i.e. spindle speed, feed rate, and, depths of cut) and process parameters (surface roughness and cutting forces) are considered. It is shown that Multi-Layer Back Propagation Neural Network is capable to perform this particular task. Design of Experiments approach is used for efficient selection of values of parameters used during experiments to reduce cost and time for experiments. The Particle Swarm Optimization methodology is used for constrained optimization of machining parameters to minimize surface roughness as well as cutting forces. ANN and Particle Swarm Optimization, two computational intelligence techniques when combined together, provide efficient computational strategy for finding optimum solutions. The proposed method is capable of handling multiple parameter optimization problems for processes that have non-linear relationship between input and output parameters e.g. milling, drilling etc. In addition, this methodology provides reliable, fast and efficient tool that can provide suitable solution to many problems faced by manufacturing industry today. AI ANN Turning machining PSO Neural networks (Computer science) Artificial intelligence Turning (Lathe work) Computational intelligence Mathematical optimization Swarm intelligence Surface roughness Simulation methods
68	Key factors influencing checking in maple veneered decorative hardwood plywood Burnard, Michael D. 23 October 2012 (has links) Face checking in decorative maple veneered plywood panels is a significant problem for hardwood plywood manufacturers, furniture makers, cabinetmakers, and consumers. Efforts made by panel producers and researchers to minimize checking conducted to-‐date have been limited, and produced contradictory results. In this study the impact of four manufacturing factors believed to contribute to check development in decorative maple veneer panels were determined. The factors investigated were face veneer thickness and preparation, lathe-‐check orientation, adhesive and core type. An efficient, automated, optical technique based on digital image correlation principles was developed and used to detect and measure checks as they develop. The novel new method for characterizing check severity and development was effective in efficiently measuring checking for a substantial number of samples. The results of the factor screening analysis reveal intricate four way interactions between factor levels contribute to check development, and that some combinations are likely to exhibit much more checking than others. / Graduation date: 2013 Plywood checking maple sugar maple check development optical method digital image correlation Tweedie distribution Tweedies compound Poisson distribution hardwood plywood hardwood plywood manufacturing adhesives core material lathe checks lathe check orientation Veneers and veneering Maple -- Cracking Maple -- Defects Plywood -- Cracking Plywood -- Defects Hardwoods -- Cracking Hardwoods -- Defects
69	Konstrukce revolverové hlavy pro CNC soustruh / Design of tool turret for CNC lathe Navrátil, Lukáš January 2019 (has links) This thesis deals with mechanical design of tool turret for CNC lathe. The first part of the thesis is dedicated to research of automatic tool exchange and current trends in design of tool turrets with drive of rotary tools. The second part is focused to design of tool turret, which is based on the findings of the research part of the thesis. The design includes calculations of machining loads, spindle deformation, bearings, gears and spindle startup. Furthermore, 3D models and selected drawings are included.
70	Konstrukce dvouosého suportu vícevřetenového soustružnického automatu / Design of a two-axis multi-spindle lathe carriage Sedlář, Jiří January 2021 (has links) This diploma thesis deals with the design of a two-axis multi-spindle lathe carriage. In the first part, there is made a research, and its aim is to find possible variants of design solutions. After the best rated variant was selected, the thesis further continues with the necessary technical calculations of the main design nodes such as a synchronous servomotor, ball screw, linear guide and bearing. The design itself was carried out with regard to calculations and the resulting model was examined in terms of dynamic stability. The subject of examination was to find the natural frequencies of the assembly and to determine the amplitudes of the oscillations which arise from the harmonic excitation force. Finally, Lobe diagrams for grooving and longitudinal turning operations were drawn.

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