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1
Rydlo, Andrej. "Automatická výměna nástrojů - napichovací rameno." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-417764.
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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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Pavlík, Jan. "Problematika rychlé automatické výměny nástrojů u obráběcích strojů." Doctoral thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2011. http://www.nusl.cz/ntk/nusl-233983.
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This dissertation thesis is focused on the problem of the Automatic Tool Change for milling centers, which is recently shown as a very current topic. The content of this work is to conduct a comprehensive research of various types of ATC depending on the type of machine, as well as research of the current tool interface relating closely with these problems. There was made a comprehensive analysis on the basis of data obtained by comprehensive research, from which both the main factors affecting this topic and the area dealed and developed by this work resulted. The most problematic area of machinery used nowdays for the Atomatic Tool Change was detected as manipulator provided the exchange between spindle and tool storage. Kinematic structure and design of individual elements affects very significantly the dynamics of the whole process of exchange of tools. Therefore, the work is focused on problematic of the manipulator. The main results of this thesis are constructional design of several types of manipulators, which were partly realized within the project 1.2.4 of Brno department of RCMT in the form of the testing stands. There was developed simulation models for selected types of manipulators which were verificated by measuring on the real stand. On the basis of abovementioned problem there was identified another key issue related not only to the exchange process but also with complex problem of service life of spindle. It is a grab force in the process of picking tools. The work outlines the possibilities for further research of these forces on the service file of spindle (especially on service life of bering groups of spindle).
3
Láznička, Petr. "Manipulační nástrojová jednotka." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-232125.
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The thesis is focus on design solutions of automatic tool changer for CNC vertical milling machine SLV 300 in cooperation with the design company IMC/Engineering s. r. o. The main goal of theses is the creation of several design variants based on the critical research of similar machinery and the subsequent choice of the most appropriate solution. The assessment of the various options is done with amount of the changes caused on the existing design of the machine. It is essential the suitability of the solution from the perspective of the customer's company SolidVision s. r. o. Design solution is being designed for the possibility of a presentation device with unique features in its class, which is meant to be a simple maintenance free design with the possibility of easy service access For the chosen solution of the automatic tool changer are by calculation verified by the most exposed part of the device. In the thesis is also design documentation, for a better understand of the design solution.
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Frémund, Libor. "Návrh manipulace s nástroji." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2011. http://www.nusl.cz/ntk/nusl-229410.
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The aim of this work is to design tools to the manipulator, unspecified metal-working machine. The proposal consists of a selection of the optimal design nodes and their functional calculations. The work also includes structural model in 3D view created in Autodesk Inventor 2010. All calculations and procedures are in accordance with current standards.
5
Fiebiger, Radek. "Manipulátor nástrojů pro svislý zásobník nástrojů." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2010. http://www.nusl.cz/ntk/nusl-229184.
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The aim of this thesis is to design different variants, choose an optimal one and the constructional solution of a tool manipulator for vertical lathe from SKG line by TOS HULÍN a.s. This thesis also includes technical and economical report. There is a solution of a basic conception, main dimensions, functional calculations and calculations of rigidity of chosen parts of this manipulator. All computations and methods are in accord with valid standards.
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Rapčan, Ján. "Zásobník a výměník nástrojů frézovacího multifunkčního obráběcího centra s vodorovnou osou vřetena." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2019. http://www.nusl.cz/ntk/nusl-400997.
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The thesis deals with automatic tool change in milling multifunctional machining center with horizontal spindle axis. It describes the systems that are currently in use and their base division. The first part of the work is common. In this part of the thesis is a machine design with its parameters. The second part is independent, deals with the design of the exchanger and tool magazine together with their design solution.
7
Jež, Jan. "Vícevřetenový vřeteník a zásobník nástrojů pro obráběcí centrum." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-449711.
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Woolsey, Roy B. "AUTOMATIC TOOLS FOR TELEMETRY TEST RANGE SPECTRUM MANAGEMENT." International Foundation for Telemetering, 2000. http://hdl.handle.net/10150/606489.
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International Telemetering Conference Proceedings / October 23-26, 2000 / Town & Country Hotel and Conference Center, San Diego, CaliforniaAutomatic spectrum management and monitoring systems are very useful to manage frequencies at test ranges and assure interference-free transmission of telemetry signals. Spectrum management systems assign telemetry frequencies using database information on available and occupied channels and analysis tools which can determine whether a data link will support telemetry. Modern, DSP-based spectrum monitoring systems, in fixed or mobile configurations, automate the process of performing spectrum occupancy to verify clear channels and identify and locate sources of interference; they are integrated with and utilize the management system database. Such systems are important to assure reliable communications channels for telemetry.
9
Zbožínek, Adam. "Konstrukce multifunkčního obráběcího centra." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2011. http://www.nusl.cz/ntk/nusl-229839.
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The master´s thesis describes basic notions in the domain of automatic tools exchange of machining centres. It describes systems which are used today and their basic division. The practical part deals with the construction of the system of automatic exchange of tools for multifunction lathe centre.
10
Merenus, Ondřej. "Multifunkční obráběcí centrum pro rotační i nerotační obrobky." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231336.
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This thesis will focus on a design of multifunctional machining center. The work is created in cooperation with two colleagues. Michal Kunorza will design a rotary table and Tomáš Grëtz will design a machine spindle with automatic tool exchange. My part of the work will focus on design of linear tool axis. The result of this cooperation should be machining center for rotary and non-rotary workpieces.
11
Rajdl, Filip. "Virtuální zprovoznění výměníku nástrojů CNC stroje." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-417784.
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The Master’s thesis deals with virtual commissioning of the CNC machine tool changer. First deals with current state of knowledge with a systematic analysis of virtual commissioning. The 3D model is created by physical properties, sensors, actuators and control signals. In the last part of this thesis, a PLC program and visualization is created. The programs needed to create a virtual commissioning are jsou NX 12.0 - Mechatronic concept designer, SIMIT Simulation Platform V10.0 a TwinCAT 3.
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Habán, Tomáš. "Zpracování programových modulů pro řízení automatické výměny nástrojů." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2011. http://www.nusl.cz/ntk/nusl-229466.
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The presented work is concerned in system of automatic tools change for machining centers. The theoretical part of this diploma work is about basic distribution. The following practical part includes mathematical description of testing stand of systems of automatic tools change STD – 25. In next step the dynamic model of this mechanism and model of servomotor is realized using simulating environment as Matlab/Simulink. The simulation of designed model of complete system is optimized in aspect of rate of change. The obtained values of servomotors performance are compared for various loads of exchange arm at the appropriate times of change. The last section briefly describes other possible alternative solution of similar dynamic systems using connection of software SolidWorks and NI LabView.
13
Lam, Bao Hoai. "Sensors and wireless networks for monitoring climate and biology in a tropical region of intensive agriculture : methods, tools and applications to the case of the Mekong Delta of Vietnam." Thesis, Brest, 2018. http://www.theses.fr/2018BRES0006/document.
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Les changements climatiques ont des impacts considérables sur le temps, les océans et les rivages, la vie sauvage. Ils amènent des problèmes désormais considérés comme majeurs par les gouvernements et organisations internationales. Ces efforts ont fourni un cadre à cette thèse, qui propose de procéder en boucle fermée de l’observation d’insectes ravageurs, avec des centaines de capteurs en réseau ("light traps"), au système d’information, et enfin à des décisions de lutte, manuelles ou automatiques. Le point d’appui pratique est la conception d’un système de comptage d’insectes proliférant dans les cultures de riz (BPH). L’abstraction que nous développons est celle d’une machine environnementale de grande taille, distribuée, qui capte et synthétise l’information, élabore des connaissances, et prend des décisions. Autour de cette abstraction, nous avons élaboré un système de vision "fisheye" effectuant le comptage des insectes. Nous proposons un système d’information géographique directement connecté au réseau de capteurs. Le couplage direct, "cyber-physique", entre les systèmes d’information et l’observation de l’environnement à échelle régionale est une nouveauté transposable, qui permet de comprendre et contrôler quantité d’évolutionsClimate changes bring problems related to nature evolutions. Global warming has an impact on sea level, weather patterns, and wild life. A number of national and international organizations are developing research programs in these directions, including threats on cultures and insect proliferation. Monitoring these phenomena, observing consequences, elaborating counteracted strategies are critical for the economy and society.The initial motivation of this work was the understanding of change impacts in the Mekong Delta region. From there, automatic observation tools were designed with a real time information system able to integrate environmental measures, then to support knowledge production.Tracking environment evolutions is distributed sensing, which can be the association of efficient sensors and radio communications, operated under the control of an information system. Sensing insects is very complex due to their diversity and dispersion. However, this is feasible in the case of intensive agricultural production as it is the case of rice, having a small number of pests. An automatic vision observatory is proposed to observe the main threats for the rice, as an evolution of manual light traps. Radio communication weaves these observatories into a network with connection to databases storing measures and possible counteractions. An example observatory has a fisheye camera and insect counting algorithms for the BPH practical case in Vietnam.By considering the observation system as an input for an abstract machine, and considering decision and actions taken as a possible control on the environment, we obtain a framework for knowledge elaboration that can be useful in lots of other situations
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Veshchikov, Nikita. "Use of simulators for side-channel analysis: Leakage detection and analysis of cryptographic systems in early stages of development." Doctoral thesis, Universite Libre de Bruxelles, 2017. https://dipot.ulb.ac.be/dspace/bitstream/2013/256648/3/final.pdf.
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Cryptography is the foundation of modern IT security,it provides algorithms and protocols that can be usedfor secure communications. Cryptographic algorithmsensure properties such as confidentiality and data integrity.Confidentiality can be ensured using encryption algorithms.Encryption algorithms require a secret information called a key.These algorithms are implemented in cryptographic devices.There exist many types of attacks against such cryptosystems,the main goal of these attacks is the extraction of the secret key.Side-channel attacks are among the strongest types of attacksagainst cryptosystems. Side-channel attacks focus on the attacked device, they measure its physicalproperties in order to extract the secret key. Thus, these attacks targetweaknesses in an implementation of an algorithm rather than the abstract algorithm itself.Power analysis is a type of side-channel attacks that can be used to extract a secretkey from a cryptosystem through the analysis of its power consumption whilethe target device executes an encryption algorithm. We can say that the secret information is leaking from the device through itspower consumption. One of the biggest challenges in the domain of side-channel analysisis the evaluation of a device from the perspective of side-channel attacksor in other words the detection of information leakage.A device can be subject to several sources of information leakageand it is actually relatively easy to find just one side-channel attack that works(by exploiting just one source of leakage),however it is very difficult to find all sources of information leakage or to show that there is no information leakage in the givenimplementation of an encryption algorithm. Evaluators use various statistical tests during the analysis of a cryptographic device to checkthat it does not leak the secret key. However, in order to performsuch tests the evaluation lab needs the device to acquire the measurementsand analyse them. Unfortunately, the development process of cryptographicsystems is rather long and has to go through several stages. Thus, an information leakagethat can lead to a side-channel attackcan be discovered by an evaluation lab at the very last stage using the finalproduct. In such case, the whole process has to be restarted in order to fix the issue,this can lead to significant time and budget overheads. The rationale is that developers of cryptographic systems would like to be able to detect issues related to side-channel analysis during the development of the system,preferably on the early stages of its development. However, it is far from beinga trivial task because the end product is not yet available andthe nature of side-channel attacks is such that it exploits the properties ofthe final version of the cryptographic device that is actually available to the end user. The goal of this work is to show how simulators can be used for the detection of issues related to side-channel analysis during the development of cryptosystems.This work lists the advantages of simulators compared to physical experimentsand suggests a classification of simulators for side-channel analysis.This work presents existing simulators that were created for side-channel analysis,more specifically we show that there is a lack of available simulation toolsand that therefore simulators are rarely used in the domain. We present threenew open-source simulators called Silk, Ascold and Savrasca.These simulators are working at different levels of abstraction,they can be used by developers to perform side-channel analysisof the device during different stages of development of a cryptosystem.We show how Silk can be used during the preliminary analysisand development of cryptographic algorithms using simulations based on high level of abstraction source code. We used it to compare S-boxesas well as to compare shuffling countermeasures against side-channel analysis.Then, we present the tool called Ascold that can be used to find side-channel leakagein implementations with masking countermeasure using the analysis of assembly code of the encryption.Finally, we demonstrate how our simulator called Savrasca can be used to find side-channelleakage using simulations based on compiled executable binaries. We use Savrascato analyse masked implementation of a well-known contest on side-channel analysis (the 4th edition of DPA Contest),as a result we demonstrate that the analysed implementation contains a previouslyundiscovered information leakage. Through this work we alsocompared results of our simulated experiments with real experiments comingfrom implementations on microcontrollers and showed that issues found using our simulatorsare also present in the final product. Overall, this work emphasises that simulatorsare very useful for the detection of side-channel leakages in early stages of developmentof cryptographic systems.Option Informatique du Doctorat en Sciences
info:eu-repo/semantics/nonPublished
15
Veshchikov, Nikita. "Use of simulators for side-channel analysis: Leakage detection and analysis of cryptographic systems in early stages of development." Doctoral thesis, Universite Libre de Bruxelles, 2008. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/256648.
Full textAbstract:
Cryptography is the foundation of modern IT security,it provides algorithms and protocols that can be usedfor secure communications. Cryptographic algorithmsensure properties such as confidentiality and data integrity.Confidentiality can be ensured using encryption algorithms.Encryption algorithms require a secret information called a key.These algorithms are implemented in cryptographic devices.There exist many types of attacks against such cryptosystems,the main goal of these attacks is the extraction of the secret key.Side-channel attacks are among the strongest types of attacksagainst cryptosystems. Side-channel attacks focus on the attacked device, they measure its physicalproperties in order to extract the secret key. Thus, these attacks targetweaknesses in an implementation of an algorithm rather than the abstract algorithm itself.Power analysis is a type of side-channel attacks that can be used to extract a secretkey from a cryptosystem through the analysis of its power consumption whilethe target device executes an encryption algorithm. We can say that the secret information is leaking from the device through itspower consumption. One of the biggest challenges in the domain of side-channel analysisis the evaluation of a device from the perspective of side-channel attacksor in other words the detection of information leakage.A device can be subject to several sources of information leakageand it is actually relatively easy to find just one side-channel attack that works(by exploiting just one source of leakage),however it is very difficult to find all sources of information leakage or to show that there is no information leakage in the givenimplementation of an encryption algorithm. Evaluators use various statistical tests during the analysis of a cryptographic device to checkthat it does not leak the secret key. However, in order to performsuch tests the evaluation lab needs the device to acquire the measurementsand analyse them. Unfortunately, the development process of cryptographicsystems is rather long and has to go through several stages. Thus, an information leakagethat can lead to a side-channel attackcan be discovered by an evaluation lab at the very last stage using the finalproduct. In such case, the whole process has to be restarted in order to fix the issue,this can lead to significant time and budget overheads. The rationale is that developers of cryptographic systems would like to be able to detect issues related to side-channel analysis during the development of the system,preferably on the early stages of its development. However, it is far from beinga trivial task because the end product is not yet available andthe nature of side-channel attacks is such that it exploits the properties ofthe final version of the cryptographic device that is actually available to the end user. The goal of this work is to show how simulators can be used for the detection of issues related to side-channel analysis during the development of cryptosystems.This work lists the advantages of simulators compared to physical experimentsand suggests a classification of simulators for side-channel analysis.This work presents existing simulators that were created for side-channel analysis,more specifically we show that there is a lack of available simulation toolsand that therefore simulators are rarely used in the domain. We present threenew open-source simulators called Silk, Ascold and Savrasca.These simulators are working at different levels of abstraction,they can be used by developers to perform side-channel analysisof the device during different stages of development of a cryptosystem.We show how Silk can be used during the preliminary analysisand development of cryptographic algorithms using simulations based on high level of abstraction source code. We used it to compare S-boxesas well as to compare shuffling countermeasures against side-channel analysis.Then, we present the tool called Ascold that can be used to find side-channel leakagein implementations with masking countermeasure using the analysis of assembly code of the encryption.Finally, we demonstrate how our simulator called Savrasca can be used to find side-channelleakage using simulations based on compiled executable binaries. We use Savrascato analyse masked implementation of a well-known contest on side-channel analysis (the 4th edition of DPA Contest),as a result we demonstrate that the analysed implementation contains a previouslyundiscovered information leakage. Through this work we alsocompared results of our simulated experiments with real experiments comingfrom implementations on microcontrollers and showed that issues found using our simulatorsare also present in the final product. Overall, this work emphasises that simulatorsare very useful for the detection of side-channel leakages in early stages of developmentof cryptographic systems.Option Informatique du Doctorat en Sciences
info:eu-repo/semantics/nonPublished
16
Kuchařík, David. "Systém pro zabezpečení a střežení objektů a prostor." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2008. http://www.nusl.cz/ntk/nusl-235876.
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This project deals with given safeguard possibilities, both mechanical and electronic. A row house with garden was chosen for being secured. Subsequently, were elaborated two`s proposals of securing and guarding of this object. First, was based on camera`s system and second on common system ESS. Later on they were evaluated and the most considerable benefits were emphasized. A system based on control panel with connected detectors was selected upon specification. Subsequently was created a model of the chosen system, at which the required behaviour was simulated and verified. An outline of an implementation was created in the C language.
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Sharir, Yacov. "Beyond the electronic connection : the technologically manufactured cyber-human and its physical human counterpart in performance : a theory related to convergence identities." Thesis, University of Plymouth, 2013. http://hdl.handle.net/10026.1/1498.
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This thesis is an investigation of the complex processes and relationships between the physical human performer and the technologically manufactured cyber-human counterpart. I acted as both researcher and the physical human performer, deeply engaged in the moment-to-moment creation of events unfolding within a shared virtual reality environment. As the primary instigator and activator of the cyber-human partner, I maintained a balance between the live and technological performance elements, prioritizing the production of content and meaning. By way of using practice as research, this thesis argues that in considering interactions between cyber-human and human performers, it is crucial to move beyond discussions of technology when considering interactions between cyber-humans and human performers to an analysis of emotional content, the powers of poetic imagery, the trust that is developed through sensory perception and the evocation of complex relationships. A theoretical model is constructed to describe the relationship between a cyber-human and a human performer in the five works created specifically for this thesis, which is not substantially different from that between human performers. Technological exploration allows for the observation and analysis of various relationships, furthering an expanded understanding of ‘movement as content’ beyond the electronic connection. Each of the works created for this research used new and innovative technologies, including virtual reality, multiple interactive systems, six generations of wearable computers, motion capture technology, high-end digital lighting projectors, various projection screens, smart electronically charged fabrics, multiple sensory sensitive devices and intelligent sensory charged alternative performance spaces. They were most often collaboratively created in order to augment all aspects of the performance and create the sense of community found in digital live dance performances/events. These works are identified as one continuous line of energy and discovery, each representing a slight variation on the premise that a working, caring, visceral and poetic content occurs beyond the technological tools. Consequently, a shift in the physical human’s psyche overwhelms the act of performance. Scholarship and reflection on the works have been integral to my creative process throughout. The goals of this thesis, the works created and the resulting methodologies are to investigate performance to heighten the multiple ways we experience and interact with the world. This maximizes connection and results in a highly interactive, improvisational, dynamic, non-linear, immediate, accessible, agential, reciprocal, emotional, visceral and transformative experience without boundaries between the virtual and physical for physical humans, cyborgs and cyber-humans alike.
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Babcinschi, Mihail. "Automatic Tool Changer on Collaborative Robots." Master's thesis, 2018. http://hdl.handle.net/10316/85972.
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Dissertação de Mestrado Integrado em Engenharia Mecânica apresentada à Faculdade de Ciências e TecnologiaTer uma maquina que pode substituir o ser humano nas tarefas do dia-a-dia não é uma ideia nova, esta chega de tão longe quanto a Grécia Antiga quando Aristóteles especulou que no futuro o homem irá construir um Autómata que poderá ajudar-nos nas nossas tarefas. Estando preocupado com os problemas da Grécia, Aristóteles também previu que este Autómata seria capaz de abolir a escravatura e que esta irá trazer igualdade para todas as pessoas. felizmente, no mundo em que vivemos já não existe escravatura como no tempo do Aristóteles, no entanto as suas especulações tornaram realidade e mudou a vida das pessoas para melhor. A robótica permitiu-nos produzir muito mais do que mos conseguia anteriormente trazendo abundância para as nossas vidas. Sendo breve, permitiu produzir mais e melhor associando isso tudo á produtos de qualidade.Ao longo das últimas décadas os robôs têm vindo a acrescentar cada vez mais valor na indústria, com especial destaque para os braços robóticos. Permitindo a realização de uma vasta gama de tarefas repetitivas, com grande rapidez e fiabilidade. Dentro do grande espectro de robôs, este projeto encontra-se inclinado para os robôs colaborativos, cujo principal objetivo é aproximar o homem do robô de forma a que os dois trabalhem em conjunto de uma forma mais interativa. Dependendo do objetivo pretendido, um braço robótico pode realizar uma ou várias tarefas para um determinado trabalho. Caso o robô esteja a efetuar só uma tarefa, é possível realizar a sua função apenas com uma ferramenta, no entanto, se o mesmo robô estiver a realizar diversas tarefas, será necessário trocar as ferramentas utilizadas por este cada vez que começar uma tarefa nova. Este projeto consiste na construção de um sistema automático de troca de ferramentas nos robôs colaborativos, e será dividido em duas partes: O Suporte das Ferramentas e o Automatic Tool Changer (ATC). O Suporte de Ferramentas é uma estrutura que será colocada na mesa de trabalho do robô. Quanto ao ATC, este consiste no mecanismo que irá permitir acoplar as ferramentas ao robô.
Having a machine that could substitute the man on the work is not a new idea, it comes as far as ancient Greece when Aristotle speculated that in the future the man will build an Automata that will be able to help on our day-to-day jobs. Being troubled with the issues of Greece at that time, he also predicted that this Automata could abolish slavery and bring human equality. Fortunately, in the world in which we live slavery does not exist anymore like in Aristotle’s time, but his speculation became a reality anyway and it changed the life of people for the better. Robotics allowed us to produce much more than we were able without it bringing to our lives abundance. In short, it allowed us to produce more and faster associating all of this with quality products. Over the last few decades robots have been adding increasing value on the industry, with special focus on the robotic arms, allowing the implementation of a large number of repetitive tasks, with good reliability and speed. Considering the vast spectrum of robots, this project focusses mainly on the collaborative robots, whose goal is to close the gap that exists between humans and robots, allowing them to work on a more interactive environment. Depending on the desired goal, a robotic arm can execute one or more tasks for a specific job. In case the robot is performing only one task, it is possible to finish the job with only one tool, however, if the same robot is performing various tasks for the same job, there will be necessary to have a system that allows the tool changing before each new task. This project consists on building an automatically tool changer for collaborative robots and it will be divided in two parts: The Tool Holder and the Automatic Tool Changer (ATC). The Tool Holder is a structure which will be positioned on robot’s work table, and it is the place where all the tools will be placed. As for the ATC, it represents the mechanism which will allow to attach the tools to the robot.
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Huang, Yu Ming, and 黃郁明. "On the analysis of an automatic tool changer with a complex tool change arm." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/48794071396336606285.
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Hwang, Yuh-Ming, and 黃郁明. "On the Analysis of an Automatic Tool Changer with a Complex Tool Change Arm." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/64801921279057732269.
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碩士國立成功大學
機械工程研究所
82
The machine system that automatically performs tool changes between the spindle and the tool magazine of a machining center is called automatic tool changer. An automatic tool changer with a complex tool change arm has two grippers located he tool maga- zine and the spindle, respectively. Two special mechanisms are designed to drive the grippers to change tools The grippers are combined, rotated, and separated to complete the process of tool change. The purpose of this work is to analyze the topological structure and dynamic characteristics of this tool changer. We conclude the key of geometric dimensions of this tool changer based on the analysis of the mechanism configuration, tool change motions, and the drive mechanisms. Then, we proceed the kinematic and kinetostatic analysis for the two drive mechanisms to obtain the contact force, friction force, and friction torque of members for the design of member strength, for the choice of bearing type , and for lubrication and wearing problems. Finally, we analyze and balance the shaking force and shaking moment of the tool changer to reduce the vibration of the machine. sunce the shaking force of the drive mechanism beside the spindle can''''t be fully balanced, we optimize of the shaking force, shaking moment, and input torque, and the RMS value of the shaking force is reduced by 25%. Then, we offer two types of balance to the driving mecha- nism next to the tool magazine: if the shaking force is fully balanced, the shaking moment increase about 150%; under space limits, we perform a partial balance and the RMS value of the shaking force is reduced by 48% little. The result of this work effectively improves the kinematic and dynamic characteristics of the original automatic tool changer with a complex tool change arm.
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Shu, Hung-an, and 許宏安. "Automatic Tool Changer Mechanism Design and Durability Test." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/70110247955281013931.
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碩士逢甲大學
材料與製造工程所
99
A changer mechanism of commercial cam type automatic tool changer (ATC) system is designed and tested in this work. And its massive production process is also considered. There are many conditions must be considered in design of tool changer mechanism. Motion steps and profiles of all devices, interference of motion profile, and minimizing fabrication processes and costs are all items involved in design. In this work, from the consideration, materials of all devices and their thermal processing methods are determined. From measurements of devices, try to find the defects from fabrication of devices and decrease cost, more improvement is done and define standard test process. From data of 5 millions durable tests, the keeping cost of machine after sold could be lower down. The stability of this mechanism is verified by one year real work.
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TSAI, CHENG-YU, and 蔡承祐. "Research on Automatic Tool Changer for Die Cutting Machine." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/uk4n6p.
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碩士南臺科技大學
機械工程系
107
In the past, cutting machine tools have been dominated by manual or semi-automated operations. This mode often causes problems in some processes, such as increased processing time, material waste, and operator risk. However, with the increase of competitors and the change of manufacturing type, it has been unable to meet the development trend of modern machine tools. Therefore, this study will start with a whole-machine automation and develop a new cutting system in a modular integration. In addition to the high-precision packing system, the die calibration technology will be integrated to develop a new tool change system and magazine. The cutting die is different from the milling cutter, which is mostly irregular in shape and needs to be completely fixed by a blade and cutter head. However, the center of the die must be found through the die corrector before the die is fixed, otherwise the overlap will occur when cutting. In order to complete the cutting machine automation and precision, the integration of packing, calibration and automatic tool changer system is very important. In the development of the magazine, this study will integrate an offline image calibration module. The die contour and alignment mark are directly projected by the die orientation of the packing system. Allows the operator to accurately lock the cutter on the blade according to this image, and then insert it into the magazine in sequence. In the new automatic tool changer part, the pneumatic system, servo motor, screw and sensor are used as the main components of the tool change positioning. Cutter management with human-machine interface (HMI), which automatically records tool magazine position, alarm and display the tool number. Remote monitoring can also be used to allow the outsiders to control the HMI to achieve stable, intelligent, fast and high-precision tool change. The integrated cutting machine can improve the time-consuming and inaccurate cutting of the tool change. The overall cutting deviation can be controlled about 0.1mm. It meets the development goal of cutting machine tools towards automation and precision.
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Chang, Lien-Wen, and 張連文. "Design of Pushing-Tool Mechanisms foran Automatic Tool Changer of Vertical Machining Centers." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/86233616741097568397.
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碩士國立成功大學
機械工程學系
87
Design of Pushing-Tool Mechanisms for an Automatic Tool Changer of Vertical Machining Centers Lien-Wen Chang＊ Wen-Miin Hwang＊＊ Department of Mechanical Engineering National Cheng Kung University Tainan, Taiwan, R.O.C. Abstract This thesis presents a method for the conceptual design and dimensional design of new pushing-tool mechanisms for an automatic tool changer of vertical machining centers. After analyzing the structures of some existing pushing-tool mechanisms, the design requirements and constraints of the new pushing- tool mechanism are proposed. Thirteen feasible conceptual designs are then synthesizes by using a systematic method. The best one is selected according to the performance evaluation via the decision matrix method. A procedure for the dimensional design of the pushing-tool mechanism, including kinematic analysis, plate cam synthesis, static force analysis, selection of materials and dimensions, and kinetostatic analysis, is proposed to determine the dimensions of the mechanism. Finally, by using the I-DEAS software, the geometry model is constructed to simulate the assembly of the pushing-tool mechanism synthesized. The new pushing-tool mechanism presented here has better performances than the existing ones. The advantages of the new pushing-tool mechanism proposed are as follows: (1) The force flow from motor to the pushing-tool mechanism is shortened and thus the mechanical efficiency is increased. (2) The pushing-tool mechanism is able to separate from the spindle, thus the spindle can move alone without carrying the ATC box when the machining center is working. (3) As the link number of the pushing-tool mechanism is decreased, the cost and the complexity of the mechanism can be reduced. (4) By using the jaw clutch in power transmission to achieve the goal of pushing and pulling tool without during the double-gripper arm, the tools can be inserted into the spindle by hand for easy set-up of tools. (5) A guide is used to prevent between the automatic tool changer box and the spindle during the process of pushing or pulling tool. The design procedure proposed can be applied to develop other types of pushing-tool mechanisms. ＊ Graduate Student ＊ ＊Advisor
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Lin, Hung-Yen, and 林泓彥. "Mechanism Configuration Synthesis of Machining Centers with Automatic Tool Changer." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/07340297812750553810.
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碩士崑山科技大學
機械工程研究所
101
In this time, machine centers industry is required to be great automatic and precision. The applications of machine centers are increasingly wide, such as the products are manufactured by automatically precision machine centers. Hence, the research and development of precision machine centers are getting more important. In recent years, the rapid developments of four or five-axis machine centers make the corresponding products be also increasingly exquisite. Therefore, this paper uses the creative design methods of mechanical devices to design new configures of machine centers with 3+1 axis. First, we analysis the topological structures of existing machine centers with automatic tool exchangers and their corresponding motion characteristics. Based on the characteristics, we conclude the design criteria. According to the definitions of standardization (ISO) coordinate system and design criteria to synthesis the tree atlas of machine centers with 3+1 axis. By using the rules of specialization and particularization, we have the new topological design atlas. Furthermore, applying the graphics software, we draw the corresponding modularized configurations. Finally, we have 49 new configurations of machine centers with 3+1 axis.
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Chou, Cheng-Tao, and 周政道. "Mechanical Analysis and Improvement of Warehouse Type Automatic Tool Changer." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/56364683167253149074.
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碩士國立雲林科技大學
機械工程技術研究所
88
In this study, the recent applications of Automatic Tool Changer (ATC) were presented, especially on the warehouse type ATC . A Virtual Prototype simulation with mechanism analysis and modal analysis technology was performed to demonstrate the results. First, the kinematic simulations of the multi-link mechanism of the tool transfer unit with ADAMS mechanism software were run to get the kinematic features. And both the kinematic optimization with Newton-Raphson Iteration and Taguchi Method were conducted to acquire a better linkage positioning with lower maximum acceleration of the couple point of the multi-link mechanism. The result of the dynamic features before and after the optima were compared, both optimizations got the similar optimal solutions. Also with Taguchi Method, calculate the optimization of the mechanism with tolerance. Secondly, the modal behaviors of the frame structure of the ATC with FEM were predicted. The results of FEM modal prediction of two Tool Clip with different mesh type and density were compared. Based on the above results, predicting the modal and frequency of the ATC, help to choose the power source working frequency and the suitable structure.
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Liu, Wu-Jun, and 劉吳俊. "The Improved Design of LW Type Dual Cam Automatic Tool Changer." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/40460976482242631687.
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碩士國立成功大學
機械工程研究所
84
The prototype dual cam automatic tool changers have been developed for four generations. However, there are still some unsolved certain problems. The third and fourth prototypes of the automatic tool changers, improved by Taiwan Leadwell CNC Machines Maf. Co. Ltd., are called LW type dual cam automatic tool changer. The purpose of the research is to analyze the performance of the existingm dual cam automatic tool changers, to identify the sources of the problems, and to provide means to solve these problems. The major existing problem of the LW type dual cam automatic tool changer is the vibration of the arm in the working cycle due to improper forces and clearances between members. This work derives equations for the geometric design of the cam surfaces, the analysis of machine dynamics, and the analysis of stress and deformation. And, an integrated computer program is developed for analyzing existing design and identifying the problems. As the result, new design is provided for improving joint forces between members; and concepts for improving clearances is proposed.
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Sousa, Paulo Jorge Leitão e. "Development and Simulation of an Automatic Tool Changer for an ABB Robot." Master's thesis, 2019. https://hdl.handle.net/10216/122963.
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Fang, Yao-Yu, and 方耀輿. "Design and Prototype Implementation of a Planar Cam-Driven Type Automatic Tool Changer." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/9bza82.
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碩士國立臺灣海洋大學
機械與機電工程學系
105
Automatic tool changers (ATCs) are the necessary module in computer numerical control (CNC) machine tools. Roller-gear cams are traditionally applied to make tool gripper arms produce the prescribed tool changing motion. However, the design and manufacturing processes for the profile of roller-gear cams are quite complicated, and thus the production costs of ATCs cannot be considerably reduced. This thesis aims at developing a planar cam-driven type ATC via the use of planar groove cams to replace the roller-gear cam in order to reduce the production costs of ATCs. Conceptual innovation design, theoretical derivation, dynamic analysis, and optimal design were completely performed for the ATC, and a prototype of the developed ATC was implemented and tested. Firstly, the motion diagram of the tool gripper arm was planned, and the conceptual innovation design of the ATC hardware was performed. The presented conceptual innovation design of the ATC hardware requires merely a planar cam-follower subassembly, a combined-type clutch- transmission (CTCT) subassembly, and a tool gripper arm subassembly to produce the prescribed tool changing motion. The planar cam-follower subassembly is applied as the motion input source for the ATC, which transmit the reciprocating swinging of a sine-type follower-arm to the tool gripper arm subassembly for producing a reciprocating translation, and transmit the reciprocating swinging of another follower-arm to the CTCT subassembly. The CTCT subassembly further makes the tool gripper arm subassembly produce a non-reciprocating rotation through a set of overrunning clutches in combined with gear trains, a bevel gear differential, and electromagnetic brakes. The tool gripper arm subassembly, as the motion output of the ATC, can thus produce the prescribed tool changing motion through the cam-follower subassembly and the CTCT subassembly. Secondly, mathematical models of the cam profiles, pressure angles and radii of curvatures for the planar cam-follower subassembly were derived, and the contact stress analysis and dynamic analysis tasks were performed. Then, the optimal design methodology was applied to reduce the cam areas and the motor driving torque. Moreover, the conceptual innovation design and the optimal design parameters were combined to perform the computer-aided design of the prototype for the developed ATC. Finally, the prototype was constructed and practical experiments were conducted. The experimental results showed that the prototype could actually produce the prescribed tool changing motion. Therefore, the design concept proposed in this study can reduce the complexity for the design and manufacturing of roller-gear cams applied in traditional ATCs.
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Cheng, Jong-Sheng, and 鄭忠生. "On the Design,The Kinetostatic and Error Analyses of the Automatic Tool Changer." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/67625840552362175850.
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Taizhen, Zhao, and 趙台震. "The Relationship Between Customer Value And Strategy of Technology Innovation：A Case Study of Automatic Tool Changer Firm." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/98662328210609541173.
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碩士中州技術學院
工程技術研究所
98
ABSTRACT In recent years, value innovation has become the pursuit of the goals in various industries, many scholars and experts held the view that the value to be created, that is, customer value. Technical innovation as companies need to obtain a competitive advantage, and thus develop a variety of technological innovation strategies discussed. Since 2007, Taiwan's machine tool exports stand on the fourth-largest country, at the same time will stimulate the growth of components, but also at the same time a national focus on the development industry, the next 2 Trillion, Twin Stars industries, but neighboring China, Korea and India threat of competition in emerging countries has never ceased, even have exacerbated the trend, therefore, how can we maintain this advantage, and even to create better results, has become research topics of interest and efforts for industry, government and academia. In view of this, this study used case studies to machine tool components, one of the key components of the tool magazine, the selection of the domestic leading enterprises as object of study, supplemented by content analysis and product attribute analysis method for customer value and technology innovation strategy intended to contain in-depth study and discussion, and corresponds to the case company's current strategy of technical innovation type of analysis, hope of better understanding through the study of customer value strategies for the importance of technological innovation and impact. The best technology innovation strategy must be based on customer value, the resource status with the company strategy and developing the most appropriate technology innovation strategy.
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HOU, ZHI-CONG, and 侯至聰. "On the design of a dual- cam automatic tool change mechanism." Thesis, 1992. http://ndltd.ncl.edu.tw/handle/82908206504906737298.
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Yu, Chii-Zen, and 余啟仁. "A Design for the Pushing-and-Pulling Tool Mechanism in an Automati Tool Changer of Machining Center." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/87143796113582907119.
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碩士國立成功大學
機械工程學系
85
The purpose of this paper is to design a new pushing-and pulling-tool mechanism for an automatic tool changer of machining center. Based on the design requirements and design contrains of the pushing-and pulling-tool mechanism, some feasible conceptual designs for the pushing-and pulling-tool mechanism are synthesized by a systematic approach. One of the best conceptual designs is selected according to the decision matrix method. A compound cam is applied to control time sequence and to drive the tool changer. A lever and a toggle mechanism is proposed to transfer the power from a face cam for pushing and pulling tool to the pushing tool head. The dimensions of the links and the face cam are then synthesized according to the specifications. The pressure angle and the radius of curvature of the face cam are checked. The acting forces in the joints of toggle and lever are also analyzed in order to determine the sizes of links, pins and ball bearings. The horsepower of the motor required is only 64.4percentage of that of an existing mechanism.
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Kuo, Te-Chuan, and 高德全. "A Study on the Automatic Tool Change Mechanisms of Roller-Gear Cam Typer." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/43180611551463681861.
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碩士國立成功大學
機械工程學系
85
This work develops a systematic methodology to design and analyze a roller-gear-cam type automatic tool change mechanism for vertical machining centers, and a prototype is built for testing the feasibility of the design. The subsystems of the automatic tool change mechanism, the extract and insert tool mechanism, the roller gear cam mechanism, and the push and pull tool mechanism, are introduced first, and coordinate transformation matrix, universal motion curve, and input-output time diagram are presented in order to design the cams of the three subsystems. For each subsystem, the universal motion curve and the input-output time diagram are used to design the motion curve of the cam. Coordinate transformation matrix, differential geometry, and theory of conjugate surfaces are used to derive equations of cam surface and cam curvature. Kinematic analysis of each subsystem is developed, and the joint force of each subsystem are analyzed based on the result of kinematic analysis and Newton''s law. Final-y, a prototype is built for experimental testing. The results prove the proposed design is feasible.
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Chiou, Jiunn-Ruey, and 邱俊睿. "A Study on the Automatic Tool Change Mechanisms of FF-Type Horizontal Machining Centers." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/06456666748128369687.
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碩士國立成功大學
機械工程學系
86
The device that auotmatically performs tool changes between thespindle and the tool magazine of a machining center is called automatictool change mechanism. This work develops a systematic methodology todesign and analyze an automatic tool change mechanism for one specifictype of horizontal machining centers. Based on Yan''''s creative mechanismdesign methodology, a feasible automatic tool change mechanism thatincludes three subsystems, the extract and insert tool mechanism, theroller gear cam mechanism, and the push and pull tool mechanism, is generated. For each subsystem, the universal motion curve and the input- outputtime diagram are used to design the motion curve of the cam. Coordinatetransformation matrix and theory of conjugate surfaces are used to derivedequations of cam surface and cam curvature. Based on kinematic and dynamicanalysis of each subsystem, the joint force, the friction force, and thefriction torque of each subsystem are analyzed in order to design the components''''strength and select the bearing types. Finally, the torque inputand horsepower to drive the mechanisms are derived from the analyzed model,and are compared with the automatic tool change mechanism of one specifictype of vertical maching centers. The theoretical analysis shows that further improvements of the cam pressureangle of each subsystem and the torque input of the push and pull tool mechanare need. As compare with the automatic tool change mechanism of vertical machining centers, the overall results are close since the topological structuresof the two designs are similar. The result of this workis beneficial for improving the prototype automatic tool change mechanism.
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LI, DA-QUAN, and 李達權. "On the development of a knowledge based system of automatic tool changers for machining centers." Thesis, 1992. http://ndltd.ncl.edu.tw/handle/36875321930168806651.
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