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Recent technological advances in the Electric Technology industry have created an acute demand for high-speed, high-performance, high-function, miniaturized electronic devices. In response to this demand, rapid advances are being made in the development of thin line and 3D lamination technologies. As a result, the need has been expressed for the introduction of the following in the processing of Si wafers that will become substrates; 1) improved shape accuracy, 2) improved surface roughness, 3) reduced damage depth, 4) reduced environmental impact. Under such conditions, in order to realize high accuracy processing and reduce the environmental impact, grinding processing based on ultra-fine diamond grains wheel using a new vitrified bond that excels in gripping strength of abrasive was studied.

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In this study high accurate polishing techniqu by GC with elastic ball type wheel is developed. In the process same CL used in cutting process is applied effectively and only cusp height generated in cutting process is removed. In order tosucceed this polishing process, polishing characterristic of elastic ball type wheel was obtained and optimal polishing condition was obtained.

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This paper proposes new stationary subdivision schemes based on Laplacian operator. The new subdivision schemes are defined by new subdivision matrices which are linear combinations of ordinary subdivision matrices and Laplacian operators. So, we call these schemes "Laplacian subdivision". Laplacian operator can control fairness of surfaces.Similarly, Laplacian subdivisions can control (local) fairness of subdivision surface. Then, we consider Laplacian Loop subdivision and Laplacian butterfly subdivision.Using the Analysis in ^KS06a), we derive a necessary and sufficient condition for Laplacian Loop subdivision to be G¹-continuous. Moreover, we get some G¹ Laplacian butterfly subdivision schemes.

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We propose a compact data structure for computing large distance fields. Our method is an extension of our 1st report which computes large distance fields by decomposing volumes into clusters. Proposed method maintains only boundary cells of clusters and other cells are represented as binary images. Once distance fields are computed, this data structure can compute complete distance fields by one distance transform for each cluster. As most of temporary files consist of binary images, the size of temporary files can be drastically reduced.

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A cyber field is a complete digital image of a real system constructed in a computer. A cyber field is required to define, operate and evaluate a large scale object model which describes real world system's configuration and its dynamic states. Shape modeling for cyber fields has eight functional requirements different from ones for usual industrial products. This report introduces the modeling requirements for cyber fields and then shows four possible modeling styles to the realization of cyber field modeling. At last five typical approaches to the 4D object modeling for cyber fields and a future implementation plan are explained.

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The period in which a 3D model is generated using digital engineering needs to be shortened. Therefore, we developed a modeling system of fluid machinery that enables generating a 3D model by inputting design parameters. Using this system, we were able to generate 3D models similar to existing ones quickly.

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In design process, it is significant support to predict the trend of customer's preference for product design. In order to predict the product shapes which will be preferred according to the analysis of the change of customer's preferences, an analysis and prediction method based on the prototype theory is proposed.

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In the design processes, CAD systems to improve designability by analyzing and evaluate the design are demanded. In this study, curvature changing rate, information entropy on curvature, and fractal dimension are used as parameters to evaluate the shape impressions.

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Class A Bezier curves are curves of monotone curvature proposed by G. Farin. In this research, we present a method for interactively controlling general class A Bezier curves by three points. Starting with a matrix of a typical class A Bezier curves, we perturb the coefficients of its matrix to generate a matrix of general class A Bezier curves. Then we use optimization process to fit the specified endpoint constraints. In this way, general class A Bezier curves are interactively generated by three points.

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We continue to develop the Reverse engineering software MOSAIC. The characteristic functions of MOSAIC generate NURBS surface quickly without interactive operation, and output suitable CAD like modeling results. Our methods is based on a segmentation method with region growing using plane proxies. We propose to extracting of feature region using plane proxies.

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This paper focuses on the optimal analysis of world-wide manufacturing activities associated with managing the logistics and production activities in global manufacturing whose activities stretch across national boundaries. An optimal analysis of globally integrated supply-chain was developed by applying simulation optimization technique as a decision-making tool. The optimal analysis contains two types of manufacturing decision problems: 1) determining production and logistic plans for each component, unit and end-product, and 2) identifying some of the appropriate conditions required to make well-performed logistics and production plans in global manufacturing.

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This paper presents a self-organization approach to manufacturing system configuration using multi-agent learning to cope with today's complexity in manufacturing systems. In this proposed approach, the roles of machines emerge, using EANNs, to achieve the objective of the whole system through interaction of the machines on the production floor. It can be expected that each machine can change its role to adapt to the new situation through re-organization processes that occur when the manufacturing environment changes. The feasibility of the proposal is discussed using computer simulation results.

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[in Japanese]

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Manipulating small optics less than 1 mm under a microscope view is increasingly required due to the increase of assembling 3 dimensional bulk type of optics. Handling such small optics has a particular difficulty both in avoiding electrostatic force, viscous force, and surface tension in handling and in making a design of ridged structure in limited workspace. For an assembling process of micro lens array (MLA) to a ferule with multi optical fibers, we devised a manipulating mechanism driven by wire, which has 5 DOF; gripping, horizontal and vertical tiling, so that each axis does not interfere with each other in the manipulating motion. This paper describes the structure of the manipulator and the results of measurement of each motion and demonstrates the capability of gripping MLA.

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We have been researching for development of Measuring Device for Motion Accuracy of NC Machine Tools by Rotary Encoders and Link Mechanisms. Measuring accuracy improvement has been achieved by error parameters estimation and compensation using these error parameters. However, the measuring accuracy is not enough for using the RELM to the machine tool calibration. In this report, the results of measurement experiments relating to repeatability have been shown and the factors that give influences to the repeatability has been discussed.

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We have been trying to develop a small three dimensional form measuring apparatus which has non-contact probe detecting proximity to measuring object through tunneling effect. However, drawbacks which still remain include the fact that the small measuring range and long measurement time. In this report, we have tried to introduce the non-contact probe device for small measuring range with high precision and image processing method for high speed wide range measurements.

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[in Japanese]

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Micro Turning System (MTS) series are super small precision CNC (computer numerical control) machine tools for exclusively machining micro-parts. This report describes examples of cutting of small-diameter-pin that has high aspect ratio in the micro-parts. A machine tool used for the cutting is "MTS4R", and this machine tool has a spindle which maximum speed is 20,000 min-1. The spindle is consisted of a 260W built-in AC servo motor and two angular ball bearings that are high precision type. As a result, graphite was turned into a 10 micro meter diameter for 200 micro meters (aspect ratio was 20), C3604 (brass) was turned into a 100 micro meter diameter for 15,000 micro meters (aspect ratio was 150) and SK4 was turned into a 300 micro meter diameter for 20,000 micro meters (aspect ratio was 67).

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Various kinds of research and development on micro-machine tools are now being carried out. However, scientific bases of micro-machine tool designing methods have not yet been established, and furthermore, technical verification for utilization is not sufficient. We have studied an application of light alloy to micro-machine tools, and developed the micro lathe made of aluminum alloy. We have previously presented the surface roughness and the cutting resistance force under micro-cutting conditions. In this paper we discuss the application of aluminum alloy to the structural body of micro-machine tools from the viewpoint of Structural Stiffness.

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In micro-EDM, the vibration assistance improves the machining stability and results in an extreme reduction of the machining time without increasing tool electrode wear and surface roughness. In this study, we have applied the vibration assisted EDM to the fabrication of thin rectangular shafts which are used for micro-stamp out machining. The validity of vibration machining has been shown, because ordinary micro-EDM processes which uses rotating mandrel cannot be used for rectangular shaft machining.

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In a manufacturing system, the digital tools such as CAD and CAM are used and communication among them frequently occurs. However, interoperability among heterogeneous software systems and tools is generally not available. To solve this problem, a digital machining information (DMI) model to support a real-virtual machining system is proposed in this study. In this report, the data structure of the fixture model which is included in DMI model is proposed. The fixture model is able to specify setup operation, and clamping positions and locations of fixtures on a workpiece. As an application using the detailed DMI model, a fixture layout display system is developed to support a setup operation.

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