National Repository of Grey Literature 228 records found  1 - 10nextend  jump to record: Search took 0.01 seconds. 
The introduction of lean manufacturing into an engineering company
Procházka, Vojtěch ; Sedlák, Josef (referee) ; Jaroš, Aleš (advisor)
The diploma thesis is focused on implementation of lean production through using Lean Six Sigma method into an engineering company, producing cable harnesses for the automotive industry, mainly for trucks. The aim of the project is to increase production capacity by 25 %, reduce wastage rate to 3 % and design a new layout of production areas. The budget of this project is 3 million CZK. The production was slimmed down using the 5S methodology. To meet the aim of the project, three new machines had to be bought. The steps have resulted in a saving of 64 CZK per piece, which means a return on investment in about 8 months.
Use of additive technology for the design and production of eye prosthesis prototype
Vocílka, Ondřej ; Sliwková, Petra (referee) ; Sedlák, Josef (advisor)
This diploma thesis has an aim to fabricate a prototype of esthetical prosthesis using solely Rapid Prototyping aditive technology and to explore the possibility of using commercially available biocompatible materials. In the theoretical part, a description of types of ocular prosthesis types with the focus being on esthetic ocular prosthesis. is given. The practical part of the work offers a comprehensive view on the whole process of the prototype fabrication. It provides a description of creating the 3D model by scanning, geometrical adjustments of the model, textures mapping, print optimization and the printing itself. The closing part of the thesis consists of a discussing focused on an evaluation of the fabricated prototype followed by technical-economical assesment, a proposal of next steps, and a proposal of current usage of the created method.
Determination of the mechanical properties of materials used for 3D printing
Černý, Martin ; Sliwková, Petra (referee) ; Sedlák, Josef (advisor)
The thesis deals with the determination of mechanical properties of materials used for 3D printing (ABS, nylon and PLA). Standardized samples produced using a 3D printer using the Fused Deposition Modeling method were subsequently used for mechanical testing. The work is also extended to determine the mechanical properties of samples made by Soft Tooling. For the production of Soft Tooling samples, polyurethane resins SG 2000 and SG 145 were used. Individual materials were analyzed by mechanical tests (tensile test and hardness test). Surface integrity parameters have also been determined for 3D-printed materials. Parameters were selected from the individual tests (tensile strength, modulus of elasticity) ductility and hardness), which were subsequently statistically processed. The work is concluded by evaluating the results obtained, which were compared with the values given in material sheets.
Efficiency improvement proposal of the holes intersection machining technology
Čaňo, Lubomír ; Šaloušek, David (referee) ; Sedlák, Josef (advisor)
This master thesis deals with the efficiency improvement proposal of the deburring technology of the edge of the holes intersection inside of the given part. In the introductory chapter it deals with the introduction of Česká zbrojovka a.s. company, where the creation of this thesis took place. The definition of the fire guns, some of the special products of the CZUB a.s. company and the description of the given part are following. The third chapter contains the description of the current manufacturing process. In the second part the proposals of the possible technologies are listed along with their current state. In the end a technical-economic evaluation is accomplished.
Efficiency Improvement Proposal of Production of Engineering Component
Hapala, Václav ; Jandačka, Marek (referee) ; Sedlák, Josef (advisor)
The master's thesis deals with the proposal of more effective production of a part. The theoretical part describes the technology of milling and drilling and the practical part focuses on the analysis of the current part production technology and the consumption of the machining time as assessment of the current machining process efficiency. The next part contains characteristics of the innovative technology, used tools and fixtures. In the conclusion both variants of production, the comparison of consumed machine time and production costs are evaluated.
Efficiency improvement proposal of machining specific components of pneumatic cylinders
Židlický, Ondřej ; Chladil, Josef (referee) ; Sedlák, Josef (advisor)
This Master thesis aims to increase the effectivity of the machining of pneumatic cylinders specific components. In the first chapter, the concurrent approach to the manufacture of corrosion resistant austenitic piston rod. This approach consists of the technological procedure, the analysis of the cutting tools used in the process and the cutting conditions. The machining process deals with low durability of cutting tools and the necessity of continual supervision by the operator. Therefore, an alternate design of cutting tools and cutting conditions is suggested in the next chapter. The new design has been tested in manufacture process. In the last chapter, the concurrent and the innovative approach are compared. By choosing the proper cutting tools and cutting conditions it was managed to increase the durability of cutting tools and to increase the effectivity of the whole manufacture process.
A proposal and production of vacuum mold for serial production of plastic forming
Tišnovský, Jakub ; Chladil, Josef (referee) ; Sedlák, Josef (advisor)
This diploma thesis deals with the proposal and production of a mold for series production of plastic parts by vacuum forming. The thesis is divided into 2 main chapters. The theoretical part includes analysis of chip machining technology. The experimental part focuses on solving the design of the mold in PowerShape software, a detailed analysis of making of the model for casting and about making of the mold themselves. In the last part the manual completion and verification of the mold is discussed. Thesis is terminated by technical-economic evaluation, in which is discussed about production costs.
Analysis of cutting tool wear while turning construction steel
Kudela, Jan ; Kouřil, Karel (referee) ; Sedlák, Josef (advisor)
The goal of the thesis is wear analysis of cutting inserts used for machining 42CrMo4 steel. Theoretical part of the thesis contains comparison of turning and milling machining processes, machining methods for ball screws made of 42CrMo4 and description of experimental methods of tool wear analysis. Experimental part of thesis contains methodology of cutting inserts wear measurement for chosen machining method. The following testing is focused on cutting insert wear as well as workpiece surface analysis. Thesis is finished with processing of measured data and overall evaluation of achieved results.
Machining of materials for specific dental applications
Těšík, Martin ; Sedlák, Josef (referee) ; Píška, Miroslav (advisor)
This diploma thesis is focused on dental materials used in prosthetic medicine. In the introduction, the most important characteristic of dental materials is summarised, which is biocompatibility. Further it contains distribution of nowadays used dental materials, which are oxidic ceramics and titanium alloys. It describes pitfalls of machining of those materials. Final part is devoted to process of the production of the new dental crown, from the first arrival of the patient to the machining of final product. The thesis also compares the economics of dental crown production using milling and 3D printing.
On the optimization of machining process of the rotary part
Benda, Martin ; Sedlák, Josef (referee) ; Píška, Miroslav (advisor)
This thesis deals with analysing component manufacture of valve lines. Firstly evaluating current condition of production including determinated manufacture times and costs. Secondly carrying out inmprovement proposals for manufacture and optimalisation of cutting conditions while considering the minimal costs given for operation sections. The final provision summarizes results which were achieved and overall benefits of the thesis.

National Repository of Grey Literature : 228 records found   1 - 10nextend  jump to record:
See also: similar author names
15 SEDLÁK, Jiří
2 Sedlák, J.
5 Sedlák, Jakub
5 Sedlák, Jan
6 Sedlák, Jaroslav
15 Sedlák, Jiří
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