| 1. |
- Archenti, Andreas, et al.
(författare)
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Evaluation of machining system dynamic stiffness
- 2007
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Ingår i: Swedish Production Symposium.
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Konferensbidrag (refereegranskat)abstract
- Today’s test methods are analysing machine tool specific characteristics but leaves out to a great deal the machining process. In this paper an evaluation method for determining machining system dynamic characteristics is discussed. For machine capability analysis, the overall elastic structure must be considered, i.e., machine tool – fixture – workpiece – toolholder – tool. Regarding dynamic behaviour of machining systems, the stability can only be evaluated through the interaction between the two subsystems, elastic structure and cutting process. In order to analyse the join machining system, stochastic discrete models, ARMA models are used to identify the stability of the join system, elastic structure – machining process.
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| 2. |
- Archenti, Andreas, et al.
(författare)
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Evaluation of machining system static stiffness
- 2007
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Ingår i: Swedish Production Symposium.
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Konferensbidrag (refereegranskat)abstract
- The majority of test methods used for determine a machining systems status, are machine tool oriented and do not take into consideration the characteristics of the machining process. In this paper an evaluation method for determining a machining system static characteristics are discussed. The importance of joint stiffness and damping in elastic structures of machine tool is emphasized. In this context the new type of double ball bar (DBB) is described which applies a preload on the structure, thus creating more realistic conditions for accuracy measurements. Also, for machine capability analysis, the overall elastic structure must be considered, i.e., machine tool-fixture-workpiece-tool holder-tool.
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| 3. |
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| 4. |
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| 5. |
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| 6. |
- Archenti, Andreas, 1973-
(författare)
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Model-Based Investigation of Machining Systems Characteristics : Static and Dynamic Stability Analysis
- 2008
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Licentiatavhandling (övrigt vetenskapligt/konstnärligt)abstract
- The increasing demands for precision and efficiency in machining call for new control strategies for machining systems based on the identification of static and dynamic characteristics under operational conditions. By considering the machining system as a closed-loop system consisting of a machine tool structure and a machining process, the join system characteristics can be analyzed. The capability of a machining system is mainly determined by its static and dynamic stiffness. The goal of this thesis is to introduce some concepts and methods regarding the identification of machining system stability. Two methods are discussed, one for the static behaviour analysis of a machine tool, and one for dynamic stability of a machining system. Preliminary results are indicating unambiguous identification of capabilities of machining systems static and dynamic characteristics. The static behaviour of a machine tool is evaluated by use of a loaded double ball bar (LDBB) device. The device reproduces the real interaction between the join system, the machine tool elastic structure and the cutting process. This load is not equivalent to real cutting forces, but it does have a similar effect on the structure. This has been investigated both trough simulation and experimental work. It is possible to capture the process – machine interaction in a machining system by use of the model-based identification approach. The identification approach takes into consideration this interaction and can therefore be used to characterize the machining system under operational conditions. The approach provides realistic prerequisites for in-process machining system testing. The model parameters can be further employed for control and optimization of the cutting process. Using different classification schemes, the model-based identification method is promising for the detection of instability. Furthermore, it is the author’s belief that a model-based stability analysis approach is needed to exploit the full potential of a model driven parts manufacturing approach.
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| 7. |
- Asif, Farazee, et al.
(författare)
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A Novel Concept for End-of-life Vehicles
- 2009
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Ingår i: Proceeding of the International 3’rd Swedish Production Symposium. - 9789163360060 ; , s. 325-331
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Konferensbidrag (refereegranskat)
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| 8. |
- Bayard, Ove, 1967-, et al.
(författare)
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DESIGNING AN EDUCATIONAL CERTIFICATION SYSTEM FOR EUROPEAN PRODUCTION ENGINEERS
- 2007
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Ingår i: Swedish Production Symposium, Gothenburg, 28th-30th August, 2007.
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Konferensbidrag (refereegranskat)abstract
- Granted by the EU Programme Leonardo da Vinci, a two-year pilot project, EPRODEC (European Production Engineering Certification) has been started. The aim of EPRODEC is to provide an appropriate “European Label” to the graduates of the accredited Production Engineering (PE) programme. The objective is to develop an accreditation system and organization that will implement the certification process for education and training within the field of Production Engineering all over Europe. Creating a unified accreditation system will make it easier to compare qualifications and skills. The paper presents some of the ideas behind EPRODEC and the first results.
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