This volume provides a concise reference to the state-of-the-art in software interoperability. Composed of over 90 papers, Enterprise Interoperability II ranges from academic research through case studies to industria...
ISBN:
(纸本)9781447171317
This volume provides a concise reference to the state-of-the-art in software interoperability. Composed of over 90 papers, Enterprise Interoperability II ranges from academic research through case studies to industrial and administrative experience of interoperability. The international nature of the authorship continues to broaden. Many of the papers have examples and illustrations calculated to deepen understanding and generate new ideas.
Current industrial development is faced by the global challenge to meet the continuously growing demand for capital and consumer goods in emerging countries while simultaneously ensuring a sustainable industrial growt...
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The presented work is an alternative to established measurement systems in surgical navigation. The system is based on camera based tracking of QR code markers. The application uses a single video camera, integrated i...
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Selective Laser Melting is an additive manufacturing process, in which the research has been increasing over the past few years to meet customer-specific requirements. Therefore, new manufacturing parameters have been...
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Selective Laser Melting is an additive manufacturing process, in which the research has been increasing over the past few years to meet customer-specific requirements. Therefore, new manufacturing parameters have been monitored raising the number of sensors in the machines. Consequently, it leads to a bigger amount of data and difficulties to perform manual data analysis. In order to improve the analysis, this paper illustrates a possibility of pattern recognition using a different historical process and sensors data from a SLM machine. The results are evaluated using an intelligent tool for algorithms configuration and data analysis developed at fraunhoferipk.
Binderless-cubic Boron Nitride (cBN) from the company SUMITOMO CORPORATION, Itami, Japan, is one of the most promising cutting materials providing the opportunity for direct cutting of steel with ultra-precision (UP) ...
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ISBN:
(纸本)9780956679086
Binderless-cubic Boron Nitride (cBN) from the company SUMITOMO CORPORATION, Itami, Japan, is one of the most promising cutting materials providing the opportunity for direct cutting of steel with ultra-precision (UP) quality without additional equipment or coating of the workpiece. This work presents the latest development in the field of precision machining of hardened stainless steel with binderless-cBN. In this paper the influence of the feed f and the cooling lubricant on the surface roughness is shown for turning the hardened stainless steel STAVAX ESR (H = 52 HRC) from the company BÖHLER-UDDEHOLM, Düsseldorf, Germany. A surface roughness Ra = 9 nm and Rz = 42 nm could be achieved using binderless-cBN and the cooling lubricant W200SL of the company OPORTET, Duisburg, Germany.
High-precision cutting of hardened steel with geometrical defined cutting edge is restricted due to excessive and random tool wear. For serial production of precision plastic parts hot embossing tools and micro inject...
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ISBN:
(纸本)9780956679086
High-precision cutting of hardened steel with geometrical defined cutting edge is restricted due to excessive and random tool wear. For serial production of precision plastic parts hot embossing tools and micro injection moulding tools with high requirements regarding geometrical accuracy and surface roughness are needed. Cutting materials based on cubic Boron Nitride (cBN) are successfully used in macro-machining of hardened steel. In this paper, detailed information about machining hardened steel with micro-milling tools with cutting edges made of cBN are given. An arithmetical mean deviation Ra = 19 nm could be achieved using a high-precision micro-milling machine tool with ball bearing guideways and spindle.
Effective micro- And macro-optical sensory constructions require an anti-reflective coating to prevent internal stray light. Otherwise the scattered light leads to measurement noise, false signals or sensor saturation...
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ISBN:
(纸本)9780956679086
Effective micro- And macro-optical sensory constructions require an anti-reflective coating to prevent internal stray light. Otherwise the scattered light leads to measurement noise, false signals or sensor saturation affecting the *** apertures in the range of d = 300 μm and less, which can be prepared as pinhole or slit by UP-machining, have high demands in the single-digit micrometre range on roundness and dimensional accuracy to avoid aberrations. The structural quality should not be influenced adversely during the coating process. One possible, and with less R = 4 % reflectivity in the visible range, competitive coating is black Al2O3 anodization. Due to its ceramic fabric and the bonding to the substrate it is particularly resistant. The layer can be produced directly on ultra-precisely manufactured aluminium (ACP 5080) structures that is suitable for *** coating process is a sequence of etching in 10 % NaOH, the anodizing step in 17 % H2SO4 and a colouration process. Dimensional losses occur in particular in the first two steps. During the etching process there is only a removal of the surface. The surface modification during the anodizing results in a removal with simultaneous layer growth. The superposition of the additive and subtractive contributions defines the total loss. In particular tiny cracks on the edge of bodies in the ceramic material may occur due to the resulting structural weakening. Regarding a compensation of those losses, predictions about the erosion behaviour have to be enabled. Depending on the anodic current, the etching and anodization time, the resulting removal rates can be influenced. However, a reduction in the material removal results in an increased reflectivity. An application-related compromise of both parameters should be aimed. The influence of parameters on these conflicting requirements was examined in order to derive design-related technological recommendations.
For precision milling manufacturing machine tools with high stiffness K and high masses m are state of the art. Usually this will be achieved due to heavy and large machine beds and frames. Hence, a new approach based...
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ISBN:
(纸本)9780956679086
For precision milling manufacturing machine tools with high stiffness K and high masses m are state of the art. Usually this will be achieved due to heavy and large machine beds and frames. Hence, a new approach based on the compensation of the dynamic dislocation was investigated. The aim of this new approach was to develop a high dynamic machine tool with a compliant machine frame. Therefore, a novel compliant three- Axes machine tool for high precision milling based on an Ethercat technology® and the open source ethercat master etherlab machine is developed by the Technische Universität Berlin and the fraunhoferinstitute for Production Systems and designtechnology. For the dynamic dislocation a Kalman-filter is integrated in the machine control which calculates the tool body with respect to the tool-center-point TCP and its velocity v. For the verification milling structures are manufactured with the compliant machine tool. Various setups were investigated, braced, compliant without compensation and compliant with compensation. Further the feed speed vf and the gain factor of the control system Kv were modified. To measure the average diameter Dav and the concentricity Cδ of the milling structures, the coordinate measurement machine O-INSPECT of the company CARL ZEISS IMT was used. As a result the compliant machine tool can be used for high precision milling processes. Finally, the compliant machine tool is compared with the WISSNER GAMMA 303 HIGH PERFORMANCE, WISSNER GMBH, GÖPPINGEN, Germany.
Point of care diagnostics gain importance with regard to novel diagnostic techniques. Future applications, for example based on cell-free DNA, are prenatal or cancer diagnostics. With regard to these methods a large i...
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ISBN:
(纸本)9780956679086
Point of care diagnostics gain importance with regard to novel diagnostic techniques. Future applications, for example based on cell-free DNA, are prenatal or cancer diagnostics. With regard to these methods a large influence of natural blood degradation during full blood storage and transport before laboratory based separation restricts possible applications. With a point of care plasma separation device, the plasma can be separated from full blood directly after blood collection. Thus, diagnostic markers remain undamaged and allow a highly specific detection. Targeting microfluidics for point-of-care blood plasma separation, this work presents the development of a microfluidic blood plasma separation device along a novel process chain. Besides system design and manufacturing technologies for prototypes, the development of technologies for replication, closure of microfluidics and affecting of surface properties are under the special scope of this investigation.
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