Thematische Bibliographien / Automatic tool changing

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Auswahl der wissenschaftlichen Literatur zum Thema „Automatic tool changing“

Autor: Grafiati

Veröffentlicht am 28. Juni 2021

Zuletzt aktualisiert am 1. Februar 2022

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Zeitschriftenartikel zum Thema "Automatic tool changing"

Obreja, Claudiu, Gheorghe Stan, Dragoș Andrioaia und Marian Funaru. „Design of an Automatic Tool Changer System for Milling Machining Centers“. Applied Mechanics and Materials 371 (August 2013): 69–73. http://dx.doi.org/10.4028/www.scientific.net/amm.371.69.

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In the field of manufacturing processes it is observed that the trend is to produce more and more fast, efficiently parts with high complexity, which involves using a high number of tools in the machining process. One of the main solutions for high speed and efficient manufacturing is based on the full automation of the entire manufacturing process. The automatic changing of the tools involved in the manufacturing process is carried out by the automatic tool changing mechanism, thus the auxiliary non-productive time consumed with the tool change is highly minimized. In this paper we present a novel automatic tool changer which is both simple and compact, and any milling machining center provided with chain or disc tool magazine can be equipped with. Also by adopting the use of this tool changing mechanism other subassemblies of the tool changing system, such as the tool transfer mechanism and the waiting position, are substituted by this changing mechanism. The auxiliary movements needed to bring the tool from the magazine into the waiting position are overlapped with the machining time, so that the total time for exchanging the tool in the spindle with the tool from the magazine is minimized.

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Obreja, Claudiu, Gheorghe Stan, Lucian Adrian Mihaila und Marius Pascu. „Application of Tree Graph Method for Reducing the Total Time of Tool Changing in Milling and Boring Machine Tools“. Applied Mechanics and Materials 371 (August 2013): 431–35. http://dx.doi.org/10.4028/www.scientific.net/amm.371.431.

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With a view of increasing the productivity on CNC machine tools one of the main solution is to reduce, as much as possible, the auxiliary time consumed with the set-up and replacement of the tools and work pieces engaged in the machining process. Reducing the total time of the tool changing process by the automatic tool changer system can be also achieved through minimizing the number of movements needed for the actual exchange of the tool, from the tool magazine to the machine spindle (the optimization of the tool changing sequences). This paper presents a new design method based on the tree-graph theory. We consider an existing automatic tool changing system, mounted on the milling and boring machining centre, and by applying the new method we obtain all the possible configurations to minimize the tool changing sequence of the automatic tool changer system. By making use of the method proposed we obtain the tool changing sequences with minimum necessary movements needed to exchange the tool. Reconfiguring an existing machine tool provided with an automatic tool changer system by making use of the proposed method leads to obtaining the smallest changing time and thus high productivity.

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Lu, Xiao Hong, Peng Zhuo Han, Wen Yi Wu und Wei Jie. „Reliability Evaluation of Circular Tool Magazine and Automatic Tool Changer“. Advanced Materials Research 630 (Dezember 2012): 245–48. http://dx.doi.org/10.4028/www.scientific.net/amr.630.245.

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Tool magazine and automatic tool changer is important parts to fulfill the machining center tool reserve and automatic changing of the spindle tool. The reliability of them directly affects the performance of the host. But recently there are no researches on the reliability evaluation methods, so considering this situation, the reliability evaluation researches on CNC machine tools and their main parts at home and abroad are analyzed and concluded. Combining the collected failure data of the circular tool magazine and automatic tool changer, use MTBF (Mean Time between Failures), MTTR (Mean Time To Repair) and the inherent availability index to realize the reliability evaluation of the circular tool magazine and automatic tool changer. Thus put forward a method to study the reliability evaluation of circular tool magazine and automatic tool changer.

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Li, Li Jun, Wei Sun, Shao Xiong Huang, Yu Jiang und Wei Tao Bai. „Countermeasure Research about Cost Control of Automatic Lathe Tool Changing System“. Applied Mechanics and Materials 268-270 (Dezember 2012): 2093–96. http://dx.doi.org/10.4028/www.scientific.net/amm.268-270.2093.

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For automatic lathe tool changing system being widely used in mechanical manufacturing enterprises, this article analyses the life distribution and fault probability of tools. Considering a complete service life circle of the tool, and taking minimum expectation of average cost for producing qualified components as evaluation indicator, the most reasonable tool changing strategy is put forward to reduce production cost in this paper.

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Xiong, Zhuang, Yan Chao Yin und Yi Long Yan. „The Macro Program Design and Digital Simulation of the Automatic Tool Changer for 5-Axis Machine“. Advanced Materials Research 655-657 (Januar 2013): 1282–85. http://dx.doi.org/10.4028/www.scientific.net/amr.655-657.1282.

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In order to reduce non-cutting time and improve machining efficiency, the macro program of automatic tool changer (ATC) has been designed firstly, which was based on the macro theory and parameter settings. Then, the machining simulation environment of the automatic tool changing was established, based on which, the digital simulation of automatic tool changing process is realized by mapping of the practical changing tool process in the virtual machining environment. The simulation results effectively verify and improve the macro program performance.

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Mihaila, Lucian Adrian. „Material Handling Mechanisms Used in Flexible Manufacturing Systems“. Applied Mechanics and Materials 245 (Dezember 2012): 197–202. http://dx.doi.org/10.4028/www.scientific.net/amm.245.197.

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In small and medium batch series manufacturing the small tool and workpiece changing time is one of the main objectives to follow in obtaining high productivity. These auxiliary times are defined as the times consumed with preparing and changing the next tool or workpiece to follow the machining process, times that usually overlap the machining process. For this purpose machining centres are equipped with an automatic tool changer system and an automatic pallet changer system. The palletizing systems imply eliminating the times consumed with the alignment, fixing and clamping of the workpieces, these systems consisting of several mechanisms: the pallet, the automatic pallet changing mechanism, the positioning mechanism and the pallet clamp/unclamp mechanism. In this paper we present an general overview of the automatic pallet changing mechanisms used both in flexible manufacturing systems and machining centres.

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Li, Yan Sheng, Yan Heng Zhang, Han Xu Sun, Hai Yang Dong und Shun Li Zhao. „An Improved Design of the Manipulator on Automatic Tool Changer“. Advanced Materials Research 591-593 (November 2012): 259–62. http://dx.doi.org/10.4028/www.scientific.net/amr.591-593.259.

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The tool falling and vibration faults often occur in the process of tool changing, In order to improve the stability of the tools on automatic tool changer, a new structure of the manipulator is presented. The new manipulator contains two-point locking instead of the original one-point locking, and the tools can be clamped more tightly. When the old manipulator is slotting the tool, the forces are analyzed, and the working load and parameters is determined by calculating and analyzing the output curve of manipulator. The three-dimensional model is built in ADMS, and the validity of the new designed manipulator is verified by the simulation in a limit state. The simulation result shows that the new manipulator can increase the ability of tool clamping effectively.

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Lu, Xiao Hong, Peng Zhuo Han und Wen Yi Wu. „Reliability Evaluation of Chain-Type Tool Magazine and ATC“. Applied Mechanics and Materials 271-272 (Dezember 2012): 461–65. http://dx.doi.org/10.4028/www.scientific.net/amm.271-272.461.

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As the tool magazine and automatic tool changer (ATC) are the important function units to reserve and change tools for the machining center, the tool-changing rate affects their reliability life which directly influences the performance level of the machining center. However, the reliability of the tool magazine and ATC has not yet got a reasonable evaluation index. Directing at the features of the tool magazine and ATC system, the mean tool change numbers between failures evaluation index is proposed, which is used to calculate the mean time to repair and estimate the collected failure data of the chain-type tool magazine and ATC. It can be seen that the tool magazine with continuous tool-changing adopts the mean tool change numbers between failures as the reliability evaluation index.

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Li, Fu Yu, Qi Wang, Xue Jun Wang und Yong Xin Peng. „Research on RFID Technology in Tool Changing of the NC System“. Advanced Materials Research 694-697 (Mai 2013): 1873–76. http://dx.doi.org/10.4028/www.scientific.net/amr.694-697.1873.

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In order to avoid the problem of tool destroyed and machine damaged because the NC (numerical control) system appeares tool identification error in the tool changing process, in the paper, the author constructed a based on RFID(radio frequency identification) technology tool changing model of the numerical control system. It can improve the tool's high reliability recognition, shorten tool changing process time and reduce the failure rate. it can realize RFID equipment and tool management information system integration that the tag sticked in the tool of the NC system is regarded as information identification basis. The author analyzes automatic tool changing process based on RFID, constructs the system hardware platform and designs software.

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Poppeova, Viera, Vladimir Bulej, Robert Zahoranský und Juraj Uríček. „Parallel Mechanism and its Application in Design of Machine Tool with Numerical Control“. Applied Mechanics and Materials 282 (Januar 2013): 74–79. http://dx.doi.org/10.4028/www.scientific.net/amm.282.74.

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This paper describes the design of machine tool based on the mechanism with parallel kinematic structure (PKS) called hexapod. The advantages of mechanisms with PKS predetermine them to the field of machining and robotics. Machine tool is designed like fully automated device contains system for automatic tool and part changing too. There was necessary to solve also a question of operation safety according to the real risk of injury. Some information about the design process, main requirements, the problems and the final solution can be found in this paper.

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Dissertationen zum Thema "Automatic tool changing"

Bláha, Pavel. „Návrh konstrukce jednoúčelového manipulátoru pro automatickou výměnu nástrojů s třívačkovým generátorem pracovního cyklu“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-442800.

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This thesis deals with the design of a single-purpose manipulator for automatic tool changing with a three-cams generator of the working cycle. At the beginning of the paper, general background information about tool trays and manipulators for the change of tools is briefly described. The scheme of the kinematic manipulator is proposed in this work as well. The thesis also includes the calculation of the shapes of the grooves in the cams. The result of this work is the design of the manipulator, including an animation of tool changing.

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Collins, James. „Automatic calibration of a tool-changing unit for modular reconfigurable machines“. Thesis, 2011. http://hdl.handle.net/10413/8859.

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Modern trends in customer demand have resulted in the development of a class of manufacturing system known as Reconfigurable Manufacturing Systems (RMS). Reconfigurable systems are designed around the idea that they must be able to be reconfigured in both their production capacity as well as in the machining processes they perform. A subset of the RMS paradigm is a group of machines called Modular Reconfigurable Machines (MRMs). Modular machines are built up from different hardware modules. They offer the user the possibility of only purchasing the required tooling for the specific need at the time. As reconfigurable machines are able to offer flexibility in machining functions, their ability to have easy access to a variety of machine tools would greatly influence their effectiveness and production capacity. This project presents a machine tooling system that would provide MRMs with an efficient way to change tools. A major requirement of the unit was that it should automatically calibrate itself in terms of its position relative to the machine it was servicing. In order for the unit to realize this requirement, it needed a method that would provide it with real-time 3D tracking of the spindle with which it was interacting. Commercially available systems that offer this facility are very costly. A popular gaming controller, the Nintendo Wii remote, was used to provide the tool-changing unit with a very economical real-time 3D tracking capability. This dissertation details the design, implementation and testing of the positioning system for the tool-changing unit.
Thesis (M.Sc.Eng.)-University of KwaZulu-Natal, Durban, 2011.

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Buchteile zum Thema "Automatic tool changing"

Vaghela, M. B., V. J. Savsani und S. B. Jadeja. „Design and Kinematic Analysis of an Automatic Tool Changing Mechanism Used in VMC“. In Lecture Notes in Mechanical Engineering, 269–83. New Delhi: Springer India, 2013. http://dx.doi.org/10.1007/978-81-322-1656-8_25.

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Champaneri, D. „’Machine vision’ — a tool for automation“. In The Changing Face of Manufacturing, 163–69. Berlin, Heidelberg: Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/978-3-642-95491-7_18.

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van Wegen, Marjan. „Automation and Centralisation of Catalogues of Hospital Libraries: Learning from Too Much Success“. In Libraries without Limits: Changing Needs — Changing Roles, 212–15. Dordrecht: Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-011-4621-0_58.

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Toman, John, Ren Siqi, Kohei Suenaga, Atsushi Igarashi und Naoki Kobayashi. „ConSORT: Context- and Flow-Sensitive Ownership Refinement Types for Imperative Programs“. In Programming Languages and Systems, 684–714. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-44914-8_25.

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AbstractWe present ConSORT, a type system for safety verification in the presence of mutability and aliasing. Mutability requires strong updates to model changing invariants during program execution, but aliasing between pointers makes it difficult to determine which invariants must be updated in response to mutation. Our type system addresses this difficulty with a novel combination of refinement types and fractional ownership types. Fractional ownership types provide flow-sensitive and precise aliasing information for reference variables. ConSORT interprets this ownership information to soundly handle strong updates of potentially aliased references. We have proved ConSORT sound and implemented a prototype, fully automated inference tool. We evaluated our tool and found it verifies non-trivial programs including data structure implementations.

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Kukla, Charles D., und Robert S. Morse. „Designing Effective Systems: A Tool Approach“. In Usability: Turning Technologies into Tools. Oxford University Press, 1993. http://dx.doi.org/10.1093/oso/9780195075106.003.0006.

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Successfully designing large, complex systems requires including people and organization as elements in the system. Many current design approaches consider only the system’s technical aspects. We need an expanded approach to system design that incorporates the insights from each of three disciplines: system engineering, human factors, and organizational design. Only in this way can we address the dynamics of technology, people, and organizations in a single, coherent approach. The need for a new design strategy is magnified by the accelerating rate of change in the business and technology environment. System design efforts are often stymied by the fact that manufacturing businesses have constantly changing needs and requirements. Companies constantly need to shift the balance between quality, cost, and manufacturing capacity to meet evolving market goals. Moreover, these operations have to consider competitive pressures for the control of cost and schedule, rapidly changing product technology, changes in worker demographics, worker skill, and education, and regulatory pressures. The mission of a plant changes over time. Based on the notion that truly effective systems must offer tools for skilled work, our approach to system design offers an alternative to standard automation strategies, one better able to deal with this context of change. Systems designed as tools for skilled work can help organizations take full advantage of the investment they have already made in people, preserve the tacit knowledge and judgment that cannot be automated, and enable workers to solve problems and improve operations. These tools can help to expand the way existing data are used to help identify and solve problems. They can optimize the effectiveness of existing production processes. They do not constrain the workers by demanding that they follow strictly prescribed sequences, but instead enhance the workers’ ability to respond quickly and effectively to constantly changing combinations of events, to allocate and coordinate limited human resources and materials, and to work together more effectively through ongoing, company-wide collaboration. The purpose of this chapter is to describe some key elements of an expanded approach to system design. We first discuss the foundations, perspective, and techniques of our approach to system design.

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Frumento, Silvia, Roberto P. Razzoli und Francesco E. Cepolina. „Advances in Robot Surgery“. In Handbook of Research on ICTs and Management Systems for Improving Efficiency in Healthcare and Social Care, 223–46. IGI Global, 2013. http://dx.doi.org/10.4018/978-1-4666-3990-4.ch011.

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Mini-invasive surgery deserves increasing attention to lower the post-operative stay in hospital and lessen falls-off complications. This leads to the trends in robots, as innovative integrated computer-aided implements. Out of front-end haptic effectors, the background support is turning to inclusive on-duty functions, e.g., surgical planners, operation assistants, etc., making possible the rethinking of protocols to progressively embed the innovations offered by the micro- and nano-technologies. The chapter brings in surgical robotics, with focus on technology and design issues of the remote-mode operation assistants. The investigation leads to define the technical characteristics of a CRHA, Co-Robotic Handling Appliance, to be purposely developed, to support the duty-split approach surgical planner. The expected features are outlined, including analysis of operation potential of special-purpose contrivances (i.e., automatic changing device of the surgical tools) and of scope-driven enhancers (i.e., exploration of the intervention theatre, IT).

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Palomo-Duarte, Manuel. „Service Composition Verification and Validation“. In Software Design and Development, 2163–82. IGI Global, 2014. http://dx.doi.org/10.4018/978-1-4666-4301-7.ch100.

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Web services are changing software development thanks to their loosely coupled nature and simple adoption. They can be easily composed to create new more powerful services, allowing for large programming systems. Verification and validation techniques try to find defects in a program to minimize losses that its malfunction could cause. Although many different approaches have been developed for “traditional” program testing, none of them have proven definitive. The problem is even more challenging for new paradigms like web services and web service compositions, because of their dynamic nature and uncommon web service-specific instructions. This chapter surveys the different approaches to web service and web service composition verification and validation, paying special attention to automation. When no tools are available for a given technique, academic efforts are discussed, and challenges are presented.

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Dahanayake, Ajantha. „Architecture and Implementation Issues“. In Successful Software Reengineering, 16–57. IGI Global, 2002. http://dx.doi.org/10.4018/978-1-931777-12-4.ch002.

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Historically the focus is on the theory of how problem-specific systems design tools can be supported by a Computer Aided Method Engineering (CAME) environment based on service object representation. To arrive at an implementation model, the conceptual model of the service object representation must be formalized. This theory is feasible when there is adequate computer support. Many researchers have emphasized strongly that requirement specification languages should have a rigorous formal basis; however, this need for formality has not been generally acknowledged in the field of information systems development. Most organizations and research groups tend to define their own methods using techniques advocated within such methods that often have no formal foundation. Discussions of modeling techniques are based on numerous examples, mostly using diagrams and notational conventions, to provide a popular style for the definition of new concepts and their behavior. In a CAME environment however, which gives the freedom to specify a modeling technique from scratch, it is difficult to avoid deficiencies such as inconsistency, lack of structure, over specification, incompleteness, ambiguity, and redundancy without using a formal approach. In automated support a formal model is used to provide stable specifications for implementation. In fact, an implementation can be seen as another, enormously detailed formal description, usually in an imperative programming language. To implement this sophisticated automated support, formal specifications of the CAME service description with adequate formal reasoning were derived earlier. In this chapter the concentration is on using representation formalism to construct a problem-specific CAME environment. Such an automated support environment must be provided for the information systems design stage in particular for the required UpperCASE tools according to the methods chosen for the problem situations. The vision is that CAME environments must function as a service-based, object-oriented MetaCASE environment that offers the services required for modeling tools, and using a mechanism to interpret the required modeling knowledge and changing the visual representation to the required form using a graphic object binding mechanism. Further, this environment must offer a mechanism for the populations of models specified according to such UpperCASE tools.

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Umachandran, Krishnan, Igor Jurčić, Valentina Della Corte und Debra Sharon Ferdinand-James. „Industry 4.0“. In Advances in Civil and Industrial Engineering, 138–56. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-6207-8.ch006.

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Industry 4.0 can be considered the 21st century's industrial revolution and will soon be the new form of manufacturing delight. The definitive customer would experience manufacturing requests determined by artificial intelligence, machine learning, and automated technologies linked with data science support for gauging customer necessities. Phenomenally, Industry 4.0 is rapidly changing the firm's management and organizational systems, and competencies, as well as making its environment much more explored, even if more complexed than in the past. This new industrial revolution would possess systems with transformative technologies for managing interconnected systems between its physical assets and computational capabilities. Such enterprises would require skilled workforce to improve and operate advanced manufacturing tools and systems, and investigate the machine data, clients, and global capitals, resulting in an escalating need for trained employees proficient in cross-functional capacities and with competencies to cope new processes and IT systems.

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Brent, Edward, Curtis Atkisson und Nathaniel Green. „Time-Shifted Online Collaboration“. In Monitoring and Assessment in Online Collaborative Environments, 55–73. IGI Global, 2010. http://dx.doi.org/10.4018/978-1-60566-786-7.ch004.

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This chapter examines online collaboration in a distributed e-learning environment. The authors describe the emerging technology of Web-based automated essay grading that provides extensive real-time data for monitoring and enhancing e-learning activities. They examine data from student use of this software service in a large introductory social science class. Using information routinely collected by the system, the authors find that students take advantage of this learning environment to revise and resubmit essays, dramatically improving their final grade by an average of 20% or two letter grades. They conclude the essential components of this learning environment that makes it so successful are its ability to provide detailed, personalized feedback to students immediately after they submit their work along with the opportunity to revise and resubmit. This transforms an automated assessment tool into a powerful collaborative learning environment. Instead of waiting days or weeks for instructor comments, that feedback is time-shifted to occur at the time it can be most effective for students. Changing the timing of feedback creates a powerful teachable moment when students have motivation, information, opportunity, and feedback. They are motivated to improve their grade, they are told what they did right or wrong while the relevant information is fresh in their minds, and they have the opportunity to revise and resubmit. The chapter ends with consideration of how those same elements can be, and sometimes already are, used in other instructional strategies such as podcasting to create effective learning environments that take advantage of the teachable moment.

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Konferenzberichte zum Thema "Automatic tool changing"

Yan, Hong-Sen, Chih-Wen Yiou, Fu-Chen Chen und Paul Chang. „On the Classification of Automatic Tool Changers for Machining Centers“. In ASME 1995 Design Engineering Technical Conferences collocated with the ASME 1995 15th International Computers in Engineering Conference and the ASME 1995 9th Annual Engineering Database Symposium. American Society of Mechanical Engineers, 1995. http://dx.doi.org/10.1115/detc1995-0122.

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Abstract This paper presents a seven-code system for the classification of automatic tool changers for machining centers according to their complexity. The first code is the types of tool magazines. The second code is the relative positions of the tool magazine and the spindle. The third code is the types of tool change mechanisms. The fourth code is the types of motion for grasping tools. The fifth code is the types of insertion and extraction of tools. The sixth code is the types of motion of changing tools. The last code is the positions of the spindle. Several examples are given to demonstrate the applications.

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Jia, Shun, Wenxi Yao und Zhiqiang Wang. „Accurate Prediction Method for Energy Consumption in Automatic Tool Changing Process of Computer Numerical Control Lathe“. In 2019 2nd World Conference on Mechanical Engineering and Intelligent Manufacturing (WCMEIM). IEEE, 2019. http://dx.doi.org/10.1109/wcmeim48965.2019.00052.

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Liu, Jianbo, Dragan Djurdjanovic und Jun Ni. „Identification and Anomaly Detection for PLC Controlled Automatic Tool Changer Using Timed Petri Net“. In ASME 2007 International Manufacturing Science and Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/msec2007-31222.

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In this paper, a new method is proposed for incremental identification of Programmable Logic Controller (PLC) controlled tool changing process using available binary event logs obtained from the PLC. The identified discrete event model identified takes the form of a modified Timed Petri Net (TPN). A real time anomaly detection system is then constructed by synchronizing the identified TPN model with the actual tool changing process through the event sequence. Any discrepancies between the model and actual system are recognized as anomalies. The test results show that the diagnostic system automatically constructed using the newly proposed procedure is able to detect anomalies, such as incorrect timing and illegal event sequence. The same procedure has been successfully applied to monitor other PLC controlled automation processes.

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Burnashov, Evgenii, Evgenii Burnashov, Konstantin Makarov, Konstantin Makarov, Boris Chubarenko, Boris Chubarenko, Konstantin Karmanov, Konstantin Karmanov, Sergey Shibaev und Sergey Shibaev. „INFORMATION-PREDICTION AUTOMATIC SYSTEM FOR THE SEA SHORE OF KALININGRAD OBLAST (IPAS): USE IN 2006-2015 AND DEVELOPMENT PROSPECTS“. In Managing risks to coastal regions and communities in a changing world. Academus Publishing, 2017. http://dx.doi.org/10.21610/conferencearticle_58b43154b1ce6.

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Information-Prediction Automatic System (IPAS) was developed for the Baltic Sea shore within the Kaliningrad District in 2005-2006 years and implemented in the State Organization of the Kaliningrad District "Baltberegozaschita" (coastal management authority) in 2007. It is used as database for shore protection engineering and a tool for analyses and forecasting of coastal processes, and has three blocks - database, forecast block and information-cartographic block. Information-cartographic block regularly accumulates the results of annual monitoring - surveys on shore segments with returning period of 6-7 years using reference system of permanent monitoring bench marks each 500 meters on the Vistula Spit, shore of Sambiya Peninsula and the Curonian Spit. IPAS is regularly used for processing and analysis of data, preparation of analytical notes for the Government of Kaliningrad Oblast and for municipal authorities. Information stored in IPAS was used for development of two programs of actions: "Protection of the shore of the Baltic Sea, the Vistula and Curonian lagoons within the Kaliningrad Oblast for the period 2014-2020 years" and "The concept of integrated development of shore protection in the Kaliningrad Oblast for the period 2013-2020 years". Optimal engineering solutions were recommended by using of the forecast block of IPAS for promenade protection constructions in Zelenogradsk and Svetlogorsk as well as for the project "Construction of beach protection in Svetlogorsk".

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Chowdhury, A. M. Masum Bulbul, Michael J. Cullado und Tao Shen. „A Wire-Driven Multifunctional Manipulator for Single Incision Laparoscopic Surgery“. In 2020 Design of Medical Devices Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/dmd2020-9015.

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Abstract Minimally Invasive Surgery (MIS) has gained popularity in current abdominal surgical procedures due to its reduced skin incision length, shortened recovery time and decreased postoperative complications. One trend is to enhance these benefits by developing technologies to expand the application of single incision laparoscopic surgery (SILS) which has even less incision and incision-related complication. However, the practical application of SILS has been constrained by many complexities, including fundamental procedure issues (e. g. limited space), as well as the issues related to surgical tools, such as lack of actuation force, weak tool tips, poor visualization and lack of dexterous multitasking tools. Due to this lack of multitasking tools, the surgical tools or robots have to be retracted, exchanged and reset multiple times during the surgery, increasing the surgical time, the risk of injury and the surgeon’s level of fatigue. This paper focuses on developing a multifunctional manipulator with an automatic tool changing capability to boost practical application of SILS. The manipulator uses a wire-driven method that minimizes the potential damage from sterilization since the electronic actuation and sensing components are located remotely from the end-effector which needs heat or chemical sterilization before surgery. The feasibility of the tool tip changing method has been demonstrated by experiments.

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Schlaps, R. C., S. Shahpar und V. Gümmer. „Automatic Three-Dimensional Optimisation of a Modern Tandem Compressor Vane“. In ASME Turbo Expo 2014: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/gt2014-26762.

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In order to increase the performance of a modern gas turbine, compressors are required to provide higher pressure ratio and avoid incurring higher losses. The tandem aerofoil has the potential to achieve a higher blade loading in combination with lower losses compared to single vanes. The main reason for this is due to the fact that a new boundary layer is generated on the second blade surface and the turning can be achieved with smaller separation occurring. The lift split between the two vanes with respect to the overall turning is an important design choice. In this paper an automated three-dimensional optimisation of a highly loaded compressor stator is presented. For optimisation a novel methodology based on the Multipoint Approximation Method (MAM) is used. MAM makes use of an automatic design of experiments, response surface modelling and a trust region to represent the design space. The CFD solutions are obtained with the high-fidelity 3D Navier-Stokes solver HYDRA. In order to increase the stage performance the 3D shape of the tandem vane is modified changing both the front and rear aerofoils. Moreover the relative location of the two aerofoils is controlled modifying the axial and tangential relative positions. It is shown that the novel optimisation methodology is able to cope with a large number of design parameters and produce designs which performs better than its single vane counterpart in terms of efficiency and numerical stall margin. One of the key challenges in producing an automatic optimisation process has been the automatic generation of high-fidelity computational meshes. The multi block-structured, high-fidelity meshing tool PADRAM is enhanced to cope with the tandem blade topologies. The wakes of each aerofoil is properly resolved and the interaction and the mixing of the front aerofoil wake and the second tandem vane are adequately resolved.

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Pegemanyfar, Nima, Michael Pfitzner und Marco Surace. „Automated CFD Analysis Within the Preliminary Combustor Design System PRECODES Utilizing Improved Cooling Models“. In ASME Turbo Expo 2007: Power for Land, Sea, and Air. ASMEDC, 2007. http://dx.doi.org/10.1115/gt2007-27409.

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The design of state-of-the-art combustion chambers is based on a multitude of design rules. To use this knowledge more effectively and to accelerate the combustor design process an automated combustion chamber design tool is being developed within the European project INTELLECT D.M. (Integrated Lean Low Emission Combustor Design Methodology). Due to the automation of the design process the time required to set up a new preliminary combustion chamber design is reduced from weeks to hours. The development of the automated preliminary combustor design tool is described in [1]. The focus of this paper is on new developments of the design system PRECODES (preliminary combustor design system) including automated mesh generation and CFD simulation. Design rules and parameters are formalized and stored within an EXCEL database. The combustor layout process including the calculations of cooling air mass flows and the zonal layout is done automatically using this database. The layout process has to be iteratively adjusted in order to find an optimal design due to the nonlinear interdependence of some of the design variables. The EXCEL database provides information for two parametric CAD models. The first parametric model includes the flame tube, pre-diffuser, cowl, metering panel, heatshield and the casing. Therefore it is relatively complex and only used for weight approximation and visualization purposes. The second CAD model is a generic model of the flame tube providing the basis for the automatic CFD mesh generation and CFD simulations. The CAD geometry is transferred to the commercial grid generator ICEM-CFD via the ICEM internal direct CAD interface. Based on the CAD geometry a multiblock structured mesh is generated automatically. Due to the utilization of the same blocking master model for different flame tubes varying in combustor size and orientation, and size and position of the mixing holes the mesh topology differs only marginally between different designs. Thus the CFD simulations are well comparable. Different combustor configurations are generated based on input parameter changes, i.e. changing the pressure level, the zonal stoichiometry or the maximum allowable material temperatures. An overview of the present results and the potentials of applying the automated combustor design tool PRECODES is presented.

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Rajkovič, Vladislav. „Zakaj računalnik prekaša človeka v šahu v nogometu pa ne?“ In Values, Competencies and Changes in Organizations. University of Maribor Press, 2021. http://dx.doi.org/10.18690/978-961-286-442-2.80.

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Modern information technology (IT), led by artificial intelligence, big data and robotics, have significant influence on our lives and work. Computer algorithms successfully solve logically complex problems, which are also a hard or even too hard nut to crack for humans. Years ago, we were stunned by the news that the computer had beaten the best chess player in the world. A similar thing happened with some challenging games, such as. GO. Many people were already asking themselves the question: What is left for a human being? A life in which we have to find ourselves even in new unpredictable situations is our ecosystem, which is anything but a well-defined game. In this game, IT is an important, sometimes indispensable, tool. The ways in which we operate are changing. That means also our professions. We are talking about job threats. We hear claims that “lower” jobs are more at risk. This is not necessarily true. E.g. the work of a waiter is very complex. It’s not just about food delivery. It's anything more. The work is also accompanied by possible unforeseen events between the waiters and the customer. It’s hard to imagine a robot being able to cope with such situations. On the other hand, the computer often surpasses the radiologist in analysing radiological images. But not always and everywhere. Because the patterns in the pictures can also be new unpredictable situations. For automatic diagnosis, if the algorithms achieve 95% accuracy is very good. They can be a good tool for humans. We know that 95% reliability is not enough for self-driving vehicles. It is therefore about the coexistence of man with computer algorithms, data and robots. In this connection, all jobs are changing. How we experience and survive these changes is primarily up to us humans.

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Chowdhury, A. M. Masum Bulbul, Jinsai Cheng, Michael J. Cullado und Tao Shen. „Design and Analysis of a Wire-Driven Multifunctional Robot for Single Incision Laparoscopic Surgery“. In ASME 2020 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/detc2020-22471.

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Abstract Single Incision Laparoscopic Surgery (SILS) is a fast-growing method in the field of MIS (Minimally Invasive Surgery) that has the potential to represent the future of laparoscopic surgeries. The major benefits of SILS results from a single incision which makes surgeries essentially scar-less, and it can reduce wound infection substantially as well as recuperation time. Many new researches are now focusing on developing cutting edge technologies to support SILS; however, the practical applications of SILS are constrained by a number of intricacies such as space limitation, absence of dexterous multitasking tools, lack of sufficient actuation force and poor visualization. Deployment and retraction of surgical tools or robots are done manually in the absence of a multitasking tool manipulator which increases the surgery time, risk of injury and surgeon’s fatigue. Our research focuses on designing a novel operative hardware (multitasking manipulator) to facilitate the SILS technique with automatic tool changing capability. A wire driven mechanism has been implemented in the design to minimize the damage to the electronic hardware during sterilization since the electronic actuation and sensing components are located remotely from the end-effector which requires heat or chemical sterilization before surgery. And a wire-driven articulated robotic arm has also been designed to support the manipulator. The details of the robotic design and analysis are conducted in the paper. The feasibility of this robotic method has been demonstrated by experiments.

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