{ "types" : { "Bookmark" : { "pluralLabel" : "Bookmarks" }, "Publication" : { "pluralLabel" : "Publications" }, "GoldStandardPublication" : { "pluralLabel" : "GoldStandardPublications" }, "GoldStandardBookmark" : { "pluralLabel" : "GoldStandardBookmarks" }, "Tag" : { "pluralLabel" : "Tags" }, "User" : { "pluralLabel" : "Users" }, "Group" : { "pluralLabel" : "Groups" }, "Sphere" : { "pluralLabel" : "Spheres" } }, "properties" : { "count" : { "valueType" : "number" }, "date" : { "valueType" : "date" }, "changeDate" : { "valueType" : "date" }, "url" : { "valueType" : "url" }, "id" : { "valueType" : "url" }, "tags" : { "valueType" : "item" }, "user" : { "valueType" : "item" } }, "items" : [ { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2f613c2250fb3e18761d532766a3495ff/itft-puma", "tags" : [ "concrete","wegner","polymer","process","born","composite","itft","manufacturing" ], "intraHash" : "f613c2250fb3e18761d532766a3495ff", "interHash" : "8033c2442aa552f7c78e381dab3f4718", "label" : "Validation of the Manufacturing Methodology of Prestressed Fiber-Reinforced Polymer Concrete by the Variation of Process Parameters", "user" : "itft-puma", "description" : "", "date" : "2024-01-31 13:29:04", "changeDate" : "2024-02-08 08:48:11", "count" : 2, "pub-type": "proceedings", "journal": "28. Stuttgarter Kunststoffkolloquium", "year": "2023", "url": "https://www.mdpi.com/1996-1944/16/23/7377", "author": [ "Michelle Engert","Kim Torben Werkle","Robert Wegner","Larissa Born","Götz T. Gresser","Hans-Christian Möhring" ], "authors": [ {"first" : "Michelle", "last" : "Engert"}, {"first" : "Kim Torben", "last" : "Werkle"}, {"first" : "Robert", "last" : "Wegner"}, {"first" : "Larissa", "last" : "Born"}, {"first" : "Götz T.", "last" : "Gresser"}, {"first" : "Hans-Christian", "last" : "Möhring"} ], "volume": "16","number": "23","pages": "151-157","abstract": "Polymer concrete has proved to be advantageous in machine building for many years thanks to its excellent damping properties. Until now, its use was limited to machine beds due to its comparatively low tensile strength. Its use in moving structural components has not been possible until now. Recent research results have shown that this challenge can be met by integrating prestressed carbon fibers. Until now, the production of samples out of prestressed fiber-reinforced polymer concrete has been carried out according to fixed specifications. It is not yet clear whether these specifications are suitable to fully exploit the potential of the material. Samples manufactured to these specifications show at least a large scatter in bending stiffness. Within the scope of this paper, the existing manufacturing process is validated by the variation of process steps. Specifically, this involved the use of a shaker, variation of the dwell time in the mold, variation of the resin content, and the procedure for impregnating the fibers. The characterization of the samples showed that the scatter could only be reduced by increasing the dwell time. However, this leads to a decrease in bending stiffness and, thus, is not suitable for further improvement of the novel material.", "isbn" : "978-3-9818681-3-5", "language" : "eng", "pubmedid" : "38068121", "issn" : "1996-1944", "article-number" : "7377", "doi" : "10.3390/ma16237377", "bibtexKey": "ma16237377" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/24e5c03d4804f931c0f2de89b17365971/isw-bibliothek", "tags" : [ "process","grk2198","gaussian","isw" ], "intraHash" : "4e5c03d4804f931c0f2de89b17365971", "interHash" : "dcdd83002c140097691e2d2308a8edec", "label" : "Comparative Study of a Biomechanical Model-based and Black-box Approach for Subject-Specific Movement Prediction", "user" : "isw-bibliothek", "description" : "", "date" : "2020-09-09 09:23:14", "changeDate" : "2020-09-09 07:23:14", "count" : 6, "pub-type": "inproceedings", "year": "2020", "url": "", "author": [ "Johannes R. Walter","Harnoor Saini","Benjamin Maier","Naser Mostashiri","Jaime L. Aguayo","Homayoon Zarshenas","Christoph Hinze","Shahnewaz Shuva","Johannes Köhler","Annika S. Sahrmann","Che-ming Chang","Akos Csiszar","Simona Galliani","Leo K. Cheng","Oliver Röhrle" ], "authors": [ {"first" : "Johannes R.", "last" : "Walter"}, {"first" : "Harnoor", "last" : "Saini"}, {"first" : "Benjamin", "last" : "Maier"}, {"first" : "Naser", "last" : "Mostashiri"}, {"first" : "Jaime L.", "last" : "Aguayo"}, {"first" : "Homayoon", "last" : "Zarshenas"}, {"first" : "Christoph", "last" : "Hinze"}, {"first" : "Shahnewaz", "last" : "Shuva"}, {"first" : "Johannes", "last" : "Köhler"}, {"first" : "Annika S.", "last" : "Sahrmann"}, {"first" : "Che-ming", "last" : "Chang"}, {"first" : "Akos", "last" : "Csiszar"}, {"first" : "Simona", "last" : "Galliani"}, {"first" : "Leo K.", "last" : "Cheng"}, {"first" : "Oliver", "last" : "Röhrle"} ], "bibtexKey": "walter2020comparative" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/29478082d973e7c9ac16788830bf88ffe/isw-bibliothek", "tags" : [ "process","Vorsteuerung","additive","predictive","control","trajectory","FDM","Trajektorienplanung","planning","Fertigung","Additive","modellprädiktive","manufacturing","model" ], "intraHash" : "9478082d973e7c9ac16788830bf88ffe", "interHash" : "9d35ba800e080e241eea521bc8879a29", "label" : "Trajektorienplanung mittels modellprädiktiver Vorsteuerung eines FDM-Druckkopfes", "user" : "isw-bibliothek", "description" : "", "date" : "2019-06-05 15:13:46", "changeDate" : "2019-06-05 14:03:52", "count" : 1, "pub-type": "conference", "booktitle": "26. Stuttgarter Kunststoffkolloquium","publisher":"IKT, Universität Stuttgart", "year": "2019", "url": "", "author": [ "Frederik Wulle","Wolfgang Bubeck","Anja Elser","Martin Wolf","Alexander Verl" ], "authors": [ {"first" : "Frederik", "last" : "Wulle"}, {"first" : "Wolfgang", "last" : "Bubeck"}, {"first" : "Anja", "last" : "Elser"}, {"first" : "Martin", "last" : "Wolf"}, {"first" : "Alexander", "last" : "Verl"} ], "pages": "83-88","abstract": "Das dynamische Verhalten von Kunststoffextrudern wird in der Trajektorienplanung bei der Additiven Fertigung kaum berücksichtigt. Dies verursacht Prozess- und Bauteilqualitätsminderungen, die vor allem in den Anfahr- und Endphasen beim Ablegen von Raupen sichtbar werden. Durch eine modellprädiktive Vorsteuerung auf Basis einer Dynamikmodellierung des Kunstoffes im Extruder kann der Volumenstrom jedoch geregelt werden.\r\nDiese Trajektorienplanung läuft auf der CNC in Echtzeit und beeinflusst zusätzlich die Trajektorie des Druckkopfs.\r\nAnhand eines Beispiels wird ein Lösungsvorschlag für eine Modellierung und Implementierung erläutert.", "venue" : "Stuttgart", "isbn" : "978-3-9818681-1-1", "language" : "deutsch", "eventdate" : "28.03.2019", "bibtexKey": "wulle2019trajektorienplanung" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2bfd3baf3b3d406c153bfbff45806a330/isw-bibliothek", "tags" : [ "5-axis","Finite","myown","process","concept","analysis","xvl","Pose-dependent","machining","xfh","element","xlr","stability" ], "intraHash" : "bfd3baf3b3d406c153bfbff45806a330", "interHash" : "97d4513782d5664a6621bc08a57c723b", "label" : "Estmation of the Pose-Dependent Stability Lobe Diagram for a new 5-axis Machining Concept", "user" : "isw-bibliothek", "description" : "", "date" : "2016-11-02 09:01:42", "changeDate" : "2016-11-02 08:02:43", "count" : 1, "pub-type": "inproceedings", "booktitle": "Proceedings of the The International Conference Management of Technology \u2013 Step to Sustainable Production (MOTSP 2016)","address":"Porec, Croatia", "year": "2016", "url": "", "author": [ "Jens Friedrich","Andreas Maurer","Armin Lechler","Alexander Verl" ], "authors": [ {"first" : "Jens", "last" : "Friedrich"}, {"first" : "Andreas", "last" : "Maurer"}, {"first" : "Armin", "last" : "Lechler"}, {"first" : "Alexander", "last" : "Verl"} ], "abstract": "In this paper, the dynamic behavior of a lightweight 5-axis milling concept is analyzed using finite element simulation. It has a pose-dependent dynamic behavior with structural Eigen modes between 28 Hz and 50 Hz. Based on these results, the stability lobe diagrams (SLD) for the milling module at different axis-positions are derived. The milling module shows a changing process stability with a maximum critical cutting depth of 7.2 mm at \u201Cbest case\u201D position and 2.3 mm at \u201Cworst case\u201D position. With a material removal simulation, the SLDs can be used to predict the process stability for unknown NC-programs.", "bibtexKey": "friedrichestmation" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2706a1742c5ba702c05241548fe4cdda9/isw-bibliothek", "tags" : [ "Abtragssimulation","process","material","simulation","xfh","xlr","xvl","isw","milling","removal","stability" ], "intraHash" : "706a1742c5ba702c05241548fe4cdda9", "interHash" : "a144b91ba9da63ab8723dd3c8489d3a9", "label" : "Determining the width and depths of cut in milling on the basis of a multi-dexel model", "user" : "isw-bibliothek", "description" : "", "date" : "2016-03-22 09:15:47", "changeDate" : "2016-03-29 15:34:00", "count" : 2, "pub-type": "article", "journal": "International Journal of Mechanical, Aerospace, Induastrial, Mechatronic and Manufacturing Engineering", "year": "2015", "url": "http://waset.org/publications/10002539/determining-the-width-and-depths-of-cut-in-milling-on-the-basis-of-a-multi-dexel-model", "author": [ "Jens Friedrich","Matthias Gebele","Armin Lechler","Alexander Verl" ], "authors": [ {"first" : "Jens", "last" : "Friedrich"}, {"first" : "Matthias", "last" : "Gebele"}, {"first" : "Armin", "last" : "Lechler"}, {"first" : "Alexander", "last" : "Verl"} ], "volume": "9","number": "10","pages": "1981-1986","abstract": "Chatter vibrations and process instabilities are the most important factors limiting the productivity of the milling process. Chatter can leads to damage of the tool, the part or the machine tool. Therefore, the estimation and prediction of the process stability is very important. The process stability depends on the spindle speed, the depth of cut and the width of cut. In milling, the process conditions are defined in the NC-program. While the spindle speed is directly coded in the NC-program, the depth and width of cut are unknown. This paper presents a new simulation based approach for the prediction of the depth and width of cut of a milling process. The prediction is based on a material removal simulation with an analytically represented tool shape and a multi-dexel approach for the work piece. The new calculation method allows the direct estimation of the depth and width of cut, which are the influencing parameters of the process stability, instead of the removed volume as existing approaches do. The knowledge can be used to predict the stability of new, unknown parts. Moreover with an additional vibration sensor, the stability lobe diagram of a milling process can be estimated and improved based on the estimated depth and width of cut.", "bibtexKey": "friedrich2015determining" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/28c494972705666f29df6c2d8f9c80392/isw-bibliothek", "tags" : [ "myown","Support","algorithms","Process","network","xvl","Learning","Milling","xfh","vector","machines","xlr","Neural","stability" ], "intraHash" : "8c494972705666f29df6c2d8f9c80392", "interHash" : "8f7522f978b23c86bce7a9d182e5dae6", "label" : "Estimation of stability lobe diagrams in milling with continuous learning algorithms", "user" : "isw-bibliothek", "description" : "", "date" : "2016-03-21 15:25:16", "changeDate" : "2016-03-29 15:33:36", "count" : 1, "pub-type": "article", "journal": "Robotics and Computer-Integrated Manufacturing", "year": "2015", "url": "http://www.sciencedirect.com/science/article/pii/S0736584515001155", "author": [ "Jens Friedrich","Christoph Hinze","Anton Renner","Alexander Verl","Armin Lechler" ], "authors": [ {"first" : "Jens", "last" : "Friedrich"}, {"first" : "Christoph", "last" : "Hinze"}, {"first" : "Anton", "last" : "Renner"}, {"first" : "Alexander", "last" : "Verl"}, {"first" : "Armin", "last" : "Lechler"} ], "pages": "-","abstract": "Abstract The productivity of milling processes is limited by the occurrence of chatter vibrations. The correlation of the maximum stable cutting depth and the spindle speed can be shown in a stability lobe diagram (SLD). The stability is different for different width of cut and can change with the axis positions. Today it is already a great effort to estimate the \\SLD\\ only for one position. Many experiments are necessary to measure the \\SLD\\ or derive a detailed mathematical model to calculate the SLD. Moreover not only the cutting depth, but also the cutting width should be represented in the SLD. This paper presents a new approach to assess the process stability based on measured acceleration signals. The multidimensional stability lobe diagram (MSLD) are derived during the production using two new continuously learning algorithms. In this paper the application of a continuous learning support vector machine and a continuous neural network is shown. The support vector machine and the neural network are extended to make them capable for continuous learning and time-variant systems. A new trust criterion is introduced, which gives information about the prediction quality of the output for the selected input region. The learned \\MSLDs\\ are evaluated against analytically calculated \\MSLDs\\ and the learning algorithms can reproduce the analytical results very well.", "issn" : "0736-5845", "doi" : "http://dx.doi.org/10.1016/j.rcim.2015.10.003", "bibtexKey": "Friedrich2015" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2575e20fd8faadd0adcf43a69e8eea13b/isw-bibliothek", "tags" : [ "myown","stbaility","Support","Process","xvl","isw","Learning","Milling","xfh","vector","machines","xlr","algorithm" ], "intraHash" : "575e20fd8faadd0adcf43a69e8eea13b", "interHash" : "7561a08748c744e594f0573293e6ba66", "label" : "Continuous learning support vector machine to estimate stability lobe diagrams in milling", "user" : "isw-bibliothek", "description" : "", "date" : "2016-03-21 15:22:24", "changeDate" : "2016-03-29 15:34:54", "count" : 1, "pub-type": "inproceedings", "booktitle": "Proceedings of the 24th International Conference on Flexible Automation & Intelligent Manufacturing","publisher":"University of Texas at San Antonio", "year": "2014", "url": "http://dx.doi.org/10.14809/faim.2014.0641", "author": [ "Jens Friedrich","Henning Hartmann","Alexander Verl","Armin Lechler" ], "authors": [ {"first" : "Jens", "last" : "Friedrich"}, {"first" : "Henning", "last" : "Hartmann"}, {"first" : "Alexander", "last" : "Verl"}, {"first" : "Armin", "last" : "Lechler"} ], "doi" : "10.14809/faim.2014.0641", "bibtexKey": "Friedrich_2014" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/209a90ee008eba06ae17cd0707b7187bd/isw-bibliothek", "tags" : [ "CAPP,","turning","for","Process","model","ISW","chain,","STEP-NC," ], "intraHash" : "09a90ee008eba06ae17cd0707b7187bd", "interHash" : "b8ce30dcf3b46855d4eabbc500b8f741", "label" : "Integrating the CAx process chain for STEP-compliant NC manufacturing ofasymmetric parts. International Journal of Computer Integrated Manufacturing19 (2006) 6, S. 533...545. Integrating the CAx process chain for STEP-compliant NC manufacturing ofasymmetric parts. International Journal of Computer Integrated Manufacturing19 (2006) 6, S. 533...545.", "user" : "isw-bibliothek", "description" : "", "date" : "2016-03-03 09:53:12", "changeDate" : "2016-03-03 09:18:35", "count" : 1, "pub-type": "misc", "year": "2006", "url": "", "author": [ "S. Heusinger","R. S. U. Rosso","P. Klemm","S. T. Newman","S. Rahimifard" ], "authors": [ {"first" : "S.", "last" : "Heusinger"}, {"first" : "R. S. U.", "last" : "Rosso"}, {"first" : "P.", "last" : "Klemm"}, {"first" : "S. T.", "last" : "Newman"}, {"first" : "S.", "last" : "Rahimifard"} ], "pages": "--","abstract": "Acceleration of product development, decrease of NC programming effort andincrease of product quality are demands from enterprises to make theirproducts competitive. These requirements are hardly met by the today's usedCAx process chain which is based on a multitude of interfaces and thestandardized control data format ISO 6983. New concepts of product datamodelling are necessary for a structured and object-oriented description ofmachining.The development of STEP-NC (ISO 14649) over the last ten years has brought newopportunities for automating the CAx process chain. The present paper portraysa methodology for implementation of a standardized CAx process chain forrotational asymmetric parts, which are described in the technology-orientedprocess model for turning (ISO 14649-12). The methodology is realized througha suite of STEP-compliant NC software tools, based on STEP-compliantinformation models to integrate the whole chain from design to machining.Component case studies are used to demonstrate and analyse the methodology.The final part of the paper discusses the major issues and deficienciesrelated to the current phase of development of this new approach.", "__markedentry" : "[xtl:6]", "bibtexKey": "HeusingerRossoKlemmEtAl2006" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2131c6fbc20f75e9b76820d66960fe6b1/isw-bibliothek", "tags" : [ "drives,","Observer","theory,","Servo","Process","force","CNC,","ISW","reconstruction" ], "intraHash" : "131c6fbc20f75e9b76820d66960fe6b1", "interHash" : "53f4616f39a24aea5c3b3bc8d3541f49", "label" : "Enabling feedback of process data by use of STEP-NC. International Journal ofComputer Integrated Manufacturing 19 (2006) 6, S. 559...569. Enabling feedback of process data by use of STEP-NC. International Journal ofComputer Integrated Manufacturing 19 (2006) 6, S. 559...569.", "user" : "isw-bibliothek", "description" : "", "date" : "2016-03-03 09:53:12", "changeDate" : "2016-03-03 09:18:35", "count" : 1, "pub-type": "misc", "year": "2006", "url": "", "author": [ "M. Wosnik","C. Kramer","A. Selig","P. Klemm" ], "authors": [ {"first" : "M.", "last" : "Wosnik"}, {"first" : "C.", "last" : "Kramer"}, {"first" : "A.", "last" : "Selig"}, {"first" : "P.", "last" : "Klemm"} ], "pages": "--","abstract": "Today's computer aided process planning (CAPP) systems are performing NCprogramming with insufficient consideration of real machine capabilities andresulting workpiece characteristics. Computer numerical controls (CNCs)receive no information about actual workpiece characteristics and appliedmanufacturing processes. Machine and process observations are not closelycoupled to the actual executed machining workingstep. STEP-NC addresses theseproblems by aiming at the availability of higher information content in CNCs.In this paper, a generic approach to preprocess and feed back process datafrom servo drives to CNCs and CAPP systems is presented. This approach restson the application of open digital servo drives in machine tools and thedesign of application-dependent algorithms to process and exchange drivesignals for both, online and offline optimization of machining processes. Theeffects of the proposed methodology on design characteristics of open servodrives and CNC kernels as well as on the data interfaces and communicationprotocols between their modules and CAPP systems are focused on in this paper.The methodologies in this paper are exemplified by their application todrive-spanning process force reconstruction.", "__markedentry" : "[xtl:6]", "bibtexKey": "WosnikKramerSeligEtAl2006" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/21d105d031e70665b4d9de4fe83af6da5/isw-bibliothek", "tags" : [ "myown","process","chatter","xfh","control","spindle","xvl","ISW","milling","speed","stability","variation" ], "intraHash" : "1d105d031e70665b4d9de4fe83af6da5", "interHash" : "0a93c816d409441a17251befe7ebb7bf", "label" : "In-process Control for Adaptive Spindle Speed Variation and Selection", "user" : "isw-bibliothek", "description" : "", "date" : "2016-03-03 09:53:12", "changeDate" : "2016-03-29 15:26:10", "count" : 1, "pub-type": "inproceedings", "booktitle": "Proceedings of the International Conference on Advanced Manufacturing Engineering and Technologies NEWTECH 2013", "year": "2013", "url": "http://www.diva-portal.org/smash/get/diva2:660817/FULLTEXT08.pdf#page=117", "author": [ "Jens Friedrich","Alexander Verl" ], "authors": [ {"first" : "Jens", "last" : "Friedrich"}, {"first" : "Alexander", "last" : "Verl"} ], "pages": "117-126","abstract": "The productivity of the milling process is limited by the cutting depth. Thecritical cutting depth varies for different spindle speeds. Unstable processescan be stabilized by varying the spindle speed. This paper presents a newapproach to stabilize the process by using adaptive spindle speed variationand selection (ASSV/ASSS). Based on the current cutting conditions theparameters of the ASSV are calculated by an in-process feedback controller tostabilize the process. In parallel a new stable spindle speed for the cuttingdepth is derived and selected (ASSS). Even if there exists no stable spindlespeed for the cutting depth, the ASSV stabilizes the process. The results areverified with simulations and with experiments on a commercial millingmachine. The application of ASSV/ASSS increases the stable cutting depth andthus the productivity with constant speed by 233% and reduces the displacementof the tool tip by the factor of 10.", "__markedentry" : "[xtl:6]", "bibtexKey": "JensFriedrich2013" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/21f5b94cec0bfeff441b069ff5faa2a42/isw-bibliothek", "tags" : [ "materials;","Advanced","process","control;","metal","Forming","distribution","ISW","metallic","planning","Production","of","and" ], "intraHash" : "1f5b94cec0bfeff441b069ff5faa2a42", "interHash" : "aa550f9c153266ce03c977c6ea7e6d02", "label" : "Research Approaches Enabling Transformability for the Metal Forming Industry: Research Approaches Enabling Transformability for the Metal Forming Industry", "user" : "isw-bibliothek", "description" : "", "date" : "2016-03-03 09:53:12", "changeDate" : "2016-03-03 09:18:35", "count" : 1, "pub-type": "misc", "year": "2012", "url": "", "author": [ "M. Birkhold","A. Verl" ], "authors": [ {"first" : "M.", "last" : "Birkhold"}, {"first" : "A.", "last" : "Verl"} ], "pages": "--","abstract": "In recent years manufacturers are faced with ever increasing volatile markets. To be able to react to new market situations, manufacturers need to develop production systems that are adaptable to these changes. In order to support research efforts concerning this challenge the Federal Ministry of Education & Research (BMBF) is funding joint projects of companies and research institutes. This paper describes the problems that the sheet metal forming industry is currently facing due to the market turbulences, how the BMBF-funded research project \u201CFormäleon\u201D will enable transformability in the sheet metal forming industry and the first results in the development of a new adaptive control system.", "__markedentry" : "[xtl:6]", "bibtexKey": "BirkholdVerl2012" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/286e27f2903495297eb9b3c6705755c16/isw-bibliothek", "tags" : [ "Multi-agent","Petri","Flexible","optimization","networks;","Distributed","system;","manufacturing","Process","ISW","planning;","systems;" ], "intraHash" : "86e27f2903495297eb9b3c6705755c16", "interHash" : "58b54d64592abdaadb49788e6d480cbe", "label" : "Application of multi-agent planning to the assignment problem. Computers inIndustry 54 (2004) S. 273-290. Application of multi-agent planning to the assignment problem. Computers inIndustry 54 (2004) S. 273-290.", "user" : "isw-bibliothek", "description" : "", "date" : "2016-03-03 09:53:12", "changeDate" : "2016-03-03 09:18:35", "count" : 1, "pub-type": "misc", "year": "2004", "url": "", "author": [ "J. Priese","O. Kornienko","S. Kornienko" ], "authors": [ {"first" : "J.", "last" : "Priese"}, {"first" : "O.", "last" : "Kornienko"}, {"first" : "S.", "last" : "Kornienko"} ], "pages": "--","abstract": "Nowadays, a globalization of national markets requires developing the flexible and demand-driven production systemswith new innovative concepts of management, information processing, production scheduling and planning. The presentedwork focuses on the low-level planning, where the multi-agent solution towards a ??job-machine?? assignment is considered. Themain point of the discussion is the flexibility of planning systems ensured by the concept of agent?s ??roles?? and ??emergencies??.Depending on the state of ??emergency??, the system receives stepwisely additional degrees of freedom to adapt the planning tothe changing conditions of the manufacturing floor. The distributed constraint satisfaction and optimization approaches,underlying the suggested method, as well as activities of rescue agents,are described in the form of Petri networks providingboth the conceptual notions and main details of implementation.", "__markedentry" : "[xtl:6]", "bibtexKey": "PrieseKornienkoKornienko2004" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2d14eb579ffd1bcd10c9ae4ad165a7fa9/isw-bibliothek", "tags" : [ "Tool","Feature-based","Simulation","CNC","Architecture,","Acquisition,","Data","Interfaces,","Process","ISW","Machine" ], "intraHash" : "d14eb579ffd1bcd10c9ae4ad165a7fa9", "interHash" : "150fa371cd9c513741646c18614b8b47", "label" : "Requirements and implementation for closed-loop process planning in smallbatch manufacturing environments. Requirements and implementation for closed-loop process planning in smallbatch manufacturing environments.", "user" : "isw-bibliothek", "description" : "", "date" : "2016-03-03 09:53:12", "changeDate" : "2016-03-03 09:18:35", "count" : 1, "pub-type": "misc", "year": "2007", "url": "", "author": [ "M. Wosnik","H. Rüdele","P. Klemm" ], "authors": [ {"first" : "M.", "last" : "Wosnik"}, {"first" : "H.", "last" : "Rüdele"}, {"first" : "P.", "last" : "Klemm"} ], "pages": "--","abstract": "This paper reports on methods and implementations related to structuredfeedback of process data to increase the availability of reliable processknowledge in small batch manufacturing environments. The presented approachaims at acquiring process data in CNCs and simulation environments dependingon the respective machining situation in actual machining or derived fromsimulated machine behaviour to increase data availability, identify systematiceffects and improve machine tool models. Based on a characterisation ofprocess data sources and architectures of commercial CNCs, an uniform approachto extend the process chain for CNC manufacturing is presented. It relies onthe development of CNC-integrated algorithms, communication interfaces and aSTEP-NC-based data model. Approaches to utilize the developed infrastructurefor machine tool selection and process parameterization in small batchmanufacturing processes are illustrated. The system is implemented for twodifferent CNCs, one with open NC kernel and another with a comprehensivehigh-level PLC interface.", "__markedentry" : "[xtl:6]", "bibtexKey": "WosnikRuedeleKlemm2007" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2b7d3fdabb6f4e75e6706e3635c5b1047/isw-bibliothek", "tags" : [ "tool","process","welding","integration,","forming,","metal","transformability,","development,","Sheet","ISW" ], "intraHash" : "b7d3fdabb6f4e75e6706e3635c5b1047", "interHash" : "64c926d120e259b5fb9840e3c38dfd1c", "label" : "On The Development Of Transformable Sheet Metal Forming Tools: On The Development Of Transformable Sheet Metal Forming Tools", "user" : "isw-bibliothek", "description" : "", "date" : "2016-03-03 09:53:12", "changeDate" : "2016-03-03 09:18:35", "count" : 1, "pub-type": "misc", "year": "2013", "url": "", "author": [ "Birkhold M.","Pauli F.-B.","Lechler A.","Verl A." ], "authors": [ {"first" : "Birkhold", "last" : "M."}, {"first" : "Pauli", "last" : "F.-B."}, {"first" : "Lechler", "last" : "A."}, {"first" : "Verl", "last" : "A."} ], "pages": "--","abstract": "Freed from the strict sinusoidal motion of classic mechanical presses, the servo press allows new tool designs. This free motion capability of the servo press can be used to integrate follow up processes into the sheet metal forming tool. With this approach, specialized equipment like dedicated welding stations become unnecessary. Moreover, by introducing transformability to the design, this integration can be made reversible. Depending on the production situation, it is possible to run the process integrated or externally. This tool design allows the manufacturer to adapt to demand more easily, thus increasing its competitiveness. However the complexity of such sheet metal forming tools is significantly increased. Thus tool manufacturers have yet to embrace the new capabilities of the servo press. In this paper we will show the design for a transformable sheet metal forming tool. The tool will produce a clamp, consisting of a ring and a holder. Ring and holder are formed, combined and welded within the tool. We will discuss the issues concerning mechanical and control systems design and how we have solved them. We will put a special emphasis on the challenges we faced with handling of forming parts, synchronization, placement and power supply of the integrated welding station.", "__markedentry" : "[xtl:6]", "bibtexKey": "M.F.-B.A.EtAl2013" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2151deb6e49472c757ef90140600c26f0/isw-bibliothek", "tags" : [ "myown","chatter","online","xfh","Process","control","spindle","xvl","ISW","speed","stability","variation" ], "intraHash" : "151deb6e49472c757ef90140600c26f0", "interHash" : "63a5086d74f022b9353f2d51bec4ebd1", "label" : "Adaptive spindle speed variation to improve process stability", "user" : "isw-bibliothek", "description" : "", "date" : "2016-03-03 09:53:12", "changeDate" : "2016-03-29 15:32:50", "count" : 1, "pub-type": "inproceedings", "booktitle": "Proceedings of the 22nd International Conference on Production Research", "year": "2013", "url": "", "author": [ "Jens Friedrich","Alexander Verl" ], "authors": [ {"first" : "Jens", "last" : "Friedrich"}, {"first" : "Alexander", "last" : "Verl"} ], "pages": "--","abstract": "A limiting factor of the performance of machine tools is the dynamic processbehavior. Suppression of chatter is still an important measure to increaseproductivity. Spindle speed variation is a known possibility to reduce chattervibrations without changes to the machine tool using the degree-of-freedom ofthe spindle speed. In this paper the new adaptive spindle speed variation(ASSV) method is presented. The ASSV algorithm automatically adapts theamplitude and the frequency of the spindle speed variation due to the currentprocess stability conditions taking into account the machine capability andthe process technology. A simulation model of the milling process is used toanalyze and verify the functionality of the ASSV. With just using a simple P-or PI-controller in combination with the ASSV algorithm the depth of cut andthus the productivity can be increased to 150% in comparison to cutting withconstant spindle speed with respect to the displacement of the tool tip.", "__markedentry" : "[xtl:6]", "bibtexKey": "FriedrichVerl2013" } ] }