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2006 JSPE Spring Meeting
Displaying 451-500 of 647 articles from this issue
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  • An Ultra Precision Production System Organized by Multiple Micro Robots
    Hisayuki Aoyama
    Session ID: L07
    Published: March 05, 2006
    Released on J-STAGE: January 31, 2007
    DOIhttps://doi.org/10.11522/pscjspe.2006S.0.901.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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    The unique production system where many small robots with micro tools and sensorscan work, has developed in 1990 in order to realize suchprecise machining and measuring over the wider range. The small robot consists of piezo elements and electromagntes for providing the inch–worm locomotion. And many kinds of micro tools and sensors have been developed and implemented on these small robots. In this report, the review of these results and the future works will be presented.
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  • An Ultra Precision Production System Organized by Multiple Micro Robots
    Tetsuharu Tanaka, Ohmi Fuchiwaki, Daigo Misaki, Takashi Usuda, Hisayuk ...
    Session ID: L08
    Published: March 05, 2006
    Released on J-STAGE: January 31, 2007
    DOIhttps://doi.org/10.11522/pscjspe.2006S.0.903.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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    We have aimed for the realization of the production machine system by the precise movement mechanism (XY–theta locomotion mechanism) equipped with variety of work tools. Aiming at the practical use, the development of the learning function to correct the movement error efficiently is hoped. In this report, it is discussed that we have succeeded in the development of an efficient correction method using least square method. Moreover, this method can be applied to change the length of a stride with the direction error and posture error kept minimums.
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  • An Ultra Precision Production System Organized by Multiple Micro Robots
    Akira Ito, Ohmi Fuchiwaki, Daigo Misaki, Takashi Usuda, Hisayuki Aoyam ...
    Session ID: L09
    Published: March 05, 2006
    Released on J-STAGE: January 31, 2007
    DOIhttps://doi.org/10.11522/pscjspe.2006S.0.905.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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    We developed a 3–DOF spherical actuator using a method of versatile microrobot. This actuator can rotate a steel sphere with high torque, so it is suitable for moving a microtool and rotating a sample. We constructed a flexible micromanipulation system with the combination of 3–DOF spherical actuator, versatile microrobot, and microtools. And we proved this system is able to do complex micromanipulation that is impossible for past micromanipulator.
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  • An Ultra Precision Production System Organized by Multiple Micro Robots
    takashi Kawai, Yoshiaki Suzuki, Ohmi Fuchiwaki, Hisayuki Aoyama, Daigo ...
    Session ID: L10
    Published: March 05, 2006
    Released on J-STAGE: January 31, 2007
    DOIhttps://doi.org/10.11522/pscjspe.2006S.0.907.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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    In our laboratory, the portable precise processing systems organized by versatile microrobots has been developed. We have also developed the work system of the micro robot that used feedback control and feedforward control. In this report, we describes the work system. In several experiments, we have confirmed the work system is very effective for desktop micro robot factory.
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  • An Ultra Precision Production System Organized by Multiple Micro Robots
    Naoto Chiba, Ohmi Fuchiwaki, Binghu Piao, Daigo Misaki, Takashi Usuda, ...
    Session ID: L11
    Published: March 05, 2006
    Released on J-STAGE: January 31, 2007
    DOIhttps://doi.org/10.11522/pscjspe.2006S.0.909.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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    In these years, we have been developing the biomedical operation system organized by versatile microrobots. In previous report, we described that noncontact rotation and the positioning of the egg cell are possible by using pipette vibration. In experiments, we succeed to rotate the fertilized egg cell in three axis with 1 degrees resolution by using the pipette vibration. As a result, we were able to confirm the normally–division of the egg cell . In nuclear transfer experiments, we confirm that the egg cells, which are positioned by pipette vibration, are divided with same probability of the egg cells, which are not positioned by pipette vibration.We have concluded that the pipette vibration would not damage the egg cell at all.In this report ,we proposes an efficient cell manipulation by using versatile microrobots and the pipette vibration.
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  • Behavior of Progressive Wave Type Microfeeder with Water Sealing Membrane
    Kunio Koizumi, Masatoshi Kobayashi
    Session ID: L16
    Published: March 05, 2006
    Released on J-STAGE: January 31, 2007
    DOIhttps://doi.org/10.11522/pscjspe.2006S.0.911.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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    Feeding track is the water sealing membrane with square metal rod lines. Bimorph type cantilevers are placed in the double end and its free end is sent out the progressive wave. If phase lag of actuation of the other end equals to arrival time of the wave, reflectied wave is held. In this report, feeding experiment was tried thin films and gels on the case of water retentioned and dry tracks.
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  • Micro–parts Feeding by a Saw–tooth Surface
    Atsushi Mitani, Naoto Sugano, Shin–ichi Hirai
    Session ID: L17
    Published: March 05, 2006
    Released on J-STAGE: January 31, 2007
    DOIhttps://doi.org/10.11522/pscjspe.2006S.0.913.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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    This paper describes an analysis of dynamical behavier of the micro–parts feeding using a saw–tooth surface. Saw–tooth surfaces bring difference of contact condition at positive and negative direction, which realize unidirectional feeding of micro–parts with simple planar and symmetric vibration. In order to design an appropriate saw–tooth surface for various micro–parts, we need to understand influence of contact condition of saw–tooth surface with a micro–part. Spherical models are defined as an approximation of roughness of a micro–part surface. We derive statics of contact of these spherical models with a saw–tooth, and we derive dynamics of a micro–part. Then we conduct numerical simulation for feeding and assess the influence of pitch of saw–tooth surface on micro–parts feeding.
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  • Development of the robot hand system to grip minute object with tweezers
    Shingo Hara, Yoshikazu Kobayashi, Kenji Shirai
    Session ID: L18
    Published: March 05, 2006
    Released on J-STAGE: January 31, 2007
    DOIhttps://doi.org/10.11522/pscjspe.2006S.0.915.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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    One purpose of this study is to develop a robot hand for manipulation of the microscopic objects. Another purpose is to develop a control system for operation the robot hand. Super precision tweezers to work under the microscope were attached in the robot hand. Therefore, a microscopic object can be held by the hand. It became easy to position of the robot hand and to hold a minute object because it added the camera image and the grip miscellaneous function to the operation interface. When this system is used, it can do the work of handling a microscopic object easily.
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  • Traveling Capsule for Inside of Soft Tube
    Takahiro Ito, Yusuke Iwamoto, Teru Hayashi
    Session ID: L19
    Published: March 05, 2006
    Released on J-STAGE: January 31, 2007
    DOIhttps://doi.org/10.11522/pscjspe.2006S.0.917.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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    We have developed a traveling micro capsule, which is driven by the inertia force and friction force. It is small enough, only 7 mm in diameter and 12 mm long, it can be put in the human gullet or intestines. The capsule contains a small magnet and a coil, and electric pulse drives the magnet to move the capsule. We did the experimental investigation that the capsule can travel on a plastic material, which has similar elasticity characteristics to living body. We have made the capsule smaller in length than the one presented last time and we have measured the temperature of the capsule during the move showing no harm to human body. Using calculated results, we have arranged new input signal pattern for the capsule and succeeded to move the capsule about twice as fast as the former one. Our capsule is supposed to be useful for medical treatment as inspection, drug delivery or operation.
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  • Data gathering of the disaster site which uses the small–sized mobile robot.
    Henri Hanzawa, Takahiro Ito
    Session ID: L20
    Published: March 05, 2006
    Released on J-STAGE: January 31, 2007
    DOIhttps://doi.org/10.11522/pscjspe.2006S.0.919.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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    We have developed a small size robot, which uses it′s size advantage for searching narrow space such as disaster site after earthquake. The robot carries a camera and sensor that send images and data to a personal computer that is used for unerring rescue operation. For example, we use data to support an operator, and to locate the position of victims or robots.
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  • Fabrication and evaluation result of a micro elliptical collimator lens for a beam shape form of Laser Diode
    Kazushi Okada, Fumikazu Oohira, Maho Hosogi, Gen Hashiguchi, Yutaka Mi ...
    Session ID: L32
    Published: March 05, 2006
    Released on J-STAGE: January 31, 2007
    DOIhttps://doi.org/10.11522/pscjspe.2006S.0.931.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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    This paper describes a new fabrication process of a micro elliptical collimator lens to form a beam shape for LD(Laser Diode). Beam shape of LD is an ellipse because divergent light angle is different between horizontal and vertical direction, which increases a coupling loss with an optical fiber. In this presentation, we propose the lens to form the divergent light of an elliptical beam shape to the collimated light of a circular beam shape. For this purpose, we designed one lens, which has different curvature radiuses between the incident and the output surfaces. In the incident surface, the divergent light is formed to the convergent light, and the convergent light is formed to the collimated light in the output surface. We simulated the optical characteristic of this lens, and designed for various parameters. In order to fabricate this lens, we propose a new process using a chemically absorbed monomolecular layer, which has an excellent hydrophobic property. This layer is patterned and deposited by a photolithographic technique. Next, we drop a UV(Ultra Violet) cure material on the hydrophilic area, as the result, we can fabricate a micro elliptical lens shape. The curvature radius of this lens can be controlled by the amount of a dropped UV cure material and an elliptical pattern size in horizontal and vertical direction. The formed lens shapes are transferred by the electro–plating and then the micro dies are fabricated. And they are used for molding the plastic lens.
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  • Self–alignment of Microparts Using Liquid Surface Tension
    Keunuk Lee, Masahiko Nishimura, Kazutoshi Okutsu, Kaiji Sato
    Session ID: L33
    Published: March 05, 2006
    Released on J-STAGE: January 31, 2007
    DOIhttps://doi.org/10.11522/pscjspe.2006S.0.933.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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    The purpose of this research is to establish a self–alignment technique for microparts assembly using liquid surface tension. The self–alignment is carried out in air using a liquid droplet and microparts with two different wettability areas on the surface. This paper describes a method which fixes the micropart during the alignment by using an adhesive as the liquid. The alignment performance and its characteristics are evaluated. Experimental results show that the 1×1×0.15mm3. microparts are aligned by adhesive′s surface tension and simultaneously fixed on the position. The average alignment error in the xy–plane was 2.5µm, while the average angular alignment error was 0.18º. The average strength of adhesive bonding was 0.61N/mm2.
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  • Development of Belt Type High–Speed Crystal Blank Polish System
    HISASHI HAMANO, TAKESHI HATSUZAWA, YASUKO YANAGIDA
    Session ID: L34
    Published: March 05, 2006
    Released on J-STAGE: January 31, 2007
    DOIhttps://doi.org/10.11522/pscjspe.2006S.0.935.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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    Quartz crystals are packaged in various electron device as frequency criterion, oscillating circuit and so on. Generally AT–cut quartz crystal oscillates in thickness shear mode but it also has other oscillation modes. Therefore surface polishing is needed. Bi–convex quartz crystal process is used barrel finishing as a technique to reduce vibration of a compact quartz crystal and progress a frequency property. However, it takes about 200 to 300 hours, it is needed to shorten processing time. We proposed belt–polishing equipment that fixes quartz crystal by a vacuum chuck. And it showed the possibility of cylindrical quartz crystal processing time for 1 minute.
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  • Development of Field Emission Device with Tungsten Nanowires
    Yusuke Kojima, Keigo Kasuya, Takeshi Ooi, Masayuki Nakao
    Session ID: L35
    Published: March 05, 2006
    Released on J-STAGE: January 31, 2007
    DOIhttps://doi.org/10.11522/pscjspe.2006S.0.937.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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    Tungten oxide nanowires are promising material for a field emitter because of their high aspect ratios and easy fabrications. In this paper, we studied the condition to get good tungsten oxide nanowires with best emission ability for field emitters.We decided that the best condition to get tungsten nanowires for field emitters is at a temperature of 800°C in an argon–hydrogen atmosphere about 45 Pa.
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  • Evaluation method of torque transmission feature (2nd Report)
    Daisuke Fujitake, Koichi Kikkawa, Yoshio Mizugaki, Shinya Matsubara, T ...
    Session ID: L77
    Published: March 05, 2006
    Released on J-STAGE: January 31, 2007
    DOIhttps://doi.org/10.11522/pscjspe.2006S.0.967.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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    Last presentation, empirical formula on maximum transmission torque that is based on geometrical parameter of intersection volume and its angle was proposed. This parameter is changed by clearance easily. Desirable torque transmission feature must not change geometrical parameter easily. So, we evaluated 3 type of feature Hexagon, Oval and Square by concentration of intersection and change of parameter on clearance. Finally, we decided oval feature is best feature of three.
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  • Development of an Optical Measuring Device for Rotation Accuracy of Micro–Spindle
    Kengo Fujimaki, Hiroshi Sase, Kimiyuki Mitsui
    Session ID: L78
    Published: March 05, 2006
    Released on J-STAGE: January 31, 2007
    DOIhttps://doi.org/10.11522/pscjspe.2006S.0.969.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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    We have developed the measuring device which measures the run–out of a spindle axis by sensing the movement of the reflected laser beam from the target sphere attached to the spindle end and proposed the method for removing the effect of the unevenness of the light reflectance on the surface of a target sphere which can degrade the measurement accuracy. In this paper, we introduce the application to the condition close to the one of micro spindles, in which a small sphere is attached to the high–speed spindle. And also the response speed and the electric noise performance of the measuring circuit have been improved.
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  • Machining examples using super small precision CNC machine tools ″MTS″
    Akira Hayashi, Katsuyuki Muranaka, Kazuhiro Shimada, Susumu Yasukawa, ...
    Session ID: L79
    Published: March 05, 2006
    Released on J-STAGE: January 31, 2007
    DOIhttps://doi.org/10.11522/pscjspe.2006S.0.971.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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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 paper describes achievements of test cutting by the MTS series. Steels, titanium alloy, aluminum alloy, copper alloy, synthetic resins, and bones are chosen as works to machine. The hardness of the hardest work in all the trials was fifty–five in HRC (Rockwell Hardness C Scale) and the MTS could machine it. On the other hand, various machining shapes were tested to process. For example, micro–pins that had steps of order of a few microns, an internal boring indicated to machine by a surface roughness of 0.4 in Ry, and a micro dimple surface with many juts of around 20 microns high, were machined and good performance was confirmed.
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  • Relation between Mechanical Characteristic and Cutting Performance of Micro Lathe
    Masashi Yamanaka, Akira Hayashi, Sumio Itou, Masanori Iijima, Katsumi ...
    Session ID: L80
    Published: March 05, 2006
    Released on J-STAGE: January 31, 2007
    DOIhttps://doi.org/10.11522/pscjspe.2006S.0.973.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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    The micro lathe having a machine base size of 150x100 mm (postcard size) was developed by the authors. The use of downsized machines for small parts is effective to decrease energy consumption and a space occupation. The cutting ability of this lathe is limited by the torque capacity of work spindle motor. Some cutting tests of brass aiming high efficiency were carried out with 3 conditions of which the product of cutting depth and feed was set constant. In case of the cutting depth is ø0.36 mm, the feed is 80 mm/min and the rotary speed of workpiece is 12000 min–1, the circularity and the roughness become 0.53 micron and 0.12 micronRa, respectively. The different tendency of measured curve of circularity is obtained depending on the diameter of workpiece.
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