National Repository of Grey Literature 31 records found  1 - 10nextend  jump to record: Search took 0.01 seconds. 
Machining of vulcanizing molds from aluminum alloys
Kaška, Zdeněk ; Kalivoda, Milan (referee) ; Polzer, Aleš (advisor)
This diploma thesis is focused on the issue of deep drilling of vulcanization molds from various aluminum alloys. The work will describe a brief description of machined materials and tools for deep drilling, including the production of the vulcanization mold itself. Based on experimental measurements, the analysis of data and knowledge gained from deep drilling of aluminum alloys with different silicon contents will be performed. In the end, the individual components of force loads for both machined materials will be compared
Design of drilling arm for machine-tool
Štancl, Dominik ; Osička, Karel (referee) ; Kalivoda, Milan (advisor)
The thesis deals with the design and deformation analysis of the real construction, which is a complement to the machine tool. The introductory part is devoted to the theory of drilling technology and extension of machine tool possibilities for this method of machining. The next section contains the design of the drill arm and the subsequent analysis in ANSYS to verify that the structure fulfill the requirements. At the end, the effect of changing the dimensions of the arm on the resulting rigidity and its functionality is assessed.
Improvement of drilling technology of flange for a submersible electric motor
Veselský, Radim ; Kalivoda, Milan (referee) ; Jaroš, Aleš (advisor)
The goal of this bachelor’s thesis is introduction of existing drilling technology, assessment of existing technologies and design combined step–drilling tool. The first part of the bachelor’s thesis describes existing drilling technology, drilling tools and drilling machines. The second part of the bachelor’s thesis describes workpiece and existing technological process of its production. The last part of bachelor’s thesis consists of design of new step–drilling combined tool and its implementation to new technological process.
3D machining module
Horák, Michal ; Omes, Jiří (referee) ; Dokoupil, Vladimír (advisor)
The thesis deals with choosing the appropriate conception for a 3D CNC machining module, design, and construction of the given machine. This work is laid out into several parts that deal with automated production assemblies, appropriate construction alternate design, design of the selected machining module, and FEM method.
Order tracking for atypical drilling tools
Chuchma, Tomáš ; Chladil, Josef (referee) ; Kalivoda, Milan (advisor)
This bachelor thesis is aimed at monitoring the phases of contract over a period of time in a chosen engineering company. The contract is atypical and differs from the contracts for usual serial products. The contract is monitored throughout all phases, from its acceptance by a customer until the end phase, namely the delivery of the product to the end client. An analysis of the complexity of the contract and a proposal for improvement are presented.
Cutting tools for deep drilling and their use in practice
Sedlář, Jiří ; Kalivoda, Milan (referee) ; Jaroš, Aleš (advisor)
This bachelor thesis deals with tools for drilling deep holes. The first part is focused on the basic description of the drilling process, sorting the tools according to their construction and last but not least, sorting of the systems used for deep drilling. In the theses is further elaborated an overview of materials for the production of cutting tools and ways of coating, which are used the most nowadays. There is a constant development in coating, because of the better mechanical, physical and chemical properties in this field. The last part is dedicated to the definition of the tools for deep drilling and their use in practice.
Drilling tools and their use
Němeček, Tomáš ; Dvořák, Jaromír (referee) ; Sliwková, Petra (advisor)
Bachelor thesis focused on theme Tools for drilling and its use deals with characteristics of drilling tools, method characteristics, description of materials suitable for drilling tools and securing sortiment at tool producers.
Technology Design of a Selected Part and Application of the Designed Changes in the Manufacturing Process
Turčín, Jiří ; Jaroš, Aleš (referee) ; Slaný, Martin (advisor)
This master thesis deals with a design of technological process description for a mechanical engineering part called „pressure plate“. The component is analyzed in regards to its mechanical engineering design and used material. Some brief theoretical prerequisites for an effective solution of the problem are summarized in the paper. A detailed research of current technological methods is provided, together with an analysis of the State-of-the-Art in manufacturing, introduction of technological possibilities of the company and a timeline records of the manufacturing process. In regards to the current methods and technologies, changes to the technological process are applied. Among these changes is a unification of machinery used in the process. This leads to an innovation of the methodology and the ways to clamp the component. Other applied alternations focus on a stabilization of the drilling process, which is reached by a choice of new tools and adjustment of cutting parameters. Furthermore, a variable coding of tools in case of automatic tool change is designed. This paper then provides two possible solutions based on proposed changes and alternations. These solutions, together with the tools mentioned, are subjects to a techno-economical assessment.
ON THE DEVELOPMENT OF HIGH-PERFORMANCE DRILLING TOOLS BY MEANS OF CAD/CAM AND ANALYSIS OF CHIP FORMATION MECHANISM
Madaj, Martin ; Janáč, Alexander (referee) ; Prokop, Jaroslav (referee) ; Píška, Miroslav (advisor)
This document deals with the development of drilling tools by means of CAD and CAE technologies. At first, a brief overview of various design procedures of 3D drill models is presented, possibilities of measurement of force and moment loading during drilling are mentioned, a chip formation mechanism is briefly described and then a list of commonly used explicit (mesh) finite element methods used for cutting simulations is presented. A meshless SPH method have been selected for this work. Although it is able to handle the large deformations easily, it has been used for cutting simulations very rarely and only an orthogonal cutting simulations related information can be found in scientific databases. It has been demonstrated on the orthogonal cutting simulation of A2024-T351 alloy that was also the starting point for SPH simulation of drilling. The following is a decription of the design, simulation and prototyping of new drilling tools - drills with three and two cutting edges and an internal chip channel. This document is focused in detail on the variant with two cutting edges for which SPH drilling simulation has also been performed. Some drawbacks related to more precise chip simulation demands have been revealed, especially a rapid increase in number of SPH elements followed with prolongation of a computational time. Information related to the design of the drilling head with two cutting edges were then used to create the patent application.
ON THE DEVELOPMENT OF HIGH-PERFORMANCE DRILLING TOOLS BY MEANS OF CAD/CAM AND ANALYSIS OF CHIP FORMATION MECHANISM
Madaj, Martin ; Píška, Miroslav (advisor)
This document deals with the development of drilling tools by means of CAD and CAE technologies. At first, a brief overview of various design procedures of 3D drill models is presented, possibilities of measurement of force and moment loading during drilling are mentioned, a chip formation mechanism is briefly described and then a list of commonly used explicit (mesh) finite element methods used for cutting simulations is presented. A meshless SPH method have been selected for this work. Although it is able to handle the large deformations easily, it has been used for cutting simulations very rarely and only an orthogonal cutting simulations related information can be found in scientific databases. It has been demonstrated on the orthogonal cutting simulation of A2024-T351 alloy that was also the starting point for SPH simulation of drilling. The following is a decription of the design, simulation and prototyping of new drilling tools - drills with three and two cutting edges and an internal chip channel. This document is focused in detail on the variant with two cutting edges for which SPH drilling simulation has also been performed. Some drawbacks related to more precise chip simulation demands have been revealed, especially a rapid increase in number of SPH elements followed with prolongation of a computational time. Information related to the design of the drilling head with two cutting edges were then used to create the patent application.

National Repository of Grey Literature : 31 records found   1 - 10nextend  jump to record:
Interested in being notified about new results for this query?
Subscribe to the RSS feed.