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Yoshiaki Kubota, Toshiyuki Kohno, Yasuhiro Fujita, Minoru Koga
Session ID: A01
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
CONFERENCE PROCEEDINGS
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Makoto Fukuda
Session ID: A07
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
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The requirement for improving runout error in rotating motion becomes higher and higher according with the recording density improvement. Especially, not only the sensitivity for rotating direction but also the high order of frequency is required in the runout measurement. This study shows that 3 point runout measurement, which is widely used in rotating runout error measurement, has the possibility of omitting some of high order frequency, and proposes a coupled three point method for runout error measurement. An experimental measurement for an air spindle demonstrates the effect of this method.
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Link parameter calibration for bias error compensation
Shigeo Fukada, Kohsuke Shimizu, Kohta Kubomura
Session ID: A08
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
CONFERENCE PROCEEDINGS
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Takaaki Oiwa, Hiroshi Tanaka, Junichi Asama
Session ID: A09
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
CONFERENCE PROCEEDINGS
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Satoshi Honda
Session ID: A13
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
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Takahiro Miyata, Toshiki Hirogaki, Eiiti Aoyama, Longbo Kang
Session ID: A14
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
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Yukio Toyosawa, Naoto Sonoda, Hiroshi Harada, Hiroshi Kashiwagi
Session ID: A15
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
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The linear actuator driven by a ball screw mechanism is widely used in the machine tools, since it can raise the machine speed higher. For the purpose of the stability in continuous path control of this type mechanism, it is important to identify the machine parameters, such as inertia, spring stiffness and dominant nonlinear friction. In this paper, we present a practical method to identify the nonlinear parameters of the table driven by a ball screw mechanism. The mechanical parameters are identified by using the steepest descent method with a dead band. This paper confirms effect of the proposed method from the results of the experimentation.
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Suguru Sawada, Hirokazu Shimoda
Session ID: A16
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
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Yuji Kudo, Hirokazu Shimoda
Session ID: A18
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
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Kenichi Taneishi, Jirou Ootsuka, Yasusi Toake, Sigeomi Kosimizu, Takek ...
Session ID: A19
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
CONFERENCE PROCEEDINGS
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Akira Sakurada, Shigeki Mori, Masato Eto, Akihiro Naganawa, Yotsugi Sh ...
Session ID: A20
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
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Ryuichi Natsume, Junichi Asama, Takaaki Oiwa, Akira Chiba
Session ID: A02
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
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Kaiji Sato, Mariam Md Ghazaly
Session ID: A21
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
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The authors have studied the multilayer electrostatic actuators supported by only lubricating liquids for ultra-precision fine stages and examined the driving characteristics of the horizontal fine stage with the actuators. The results show that the suitable driving signals can greatly change the friction characteristics and realize the switching function between the low friction characteristics for a wide and fast motion and the high friction characteristics for ultra-precision fine motion with a large locking force. This paper reports the ultra-precision positioning performance using a vertical fine stage with a multilayer electrostatic actuator supported by a lubricating liquid.
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Michitaka Maegawa, Ryuta Sato, Keiichi Shirase
Session ID: A23
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
CONFERENCE PROCEEDINGS
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Burak Sencer, Eiji Shamoto
Session ID: A24
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
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In this paper, a robust adaptive control scheme is proposed to reduce the effect of harmonic disturbances in feed drive systems. Harmonic forces are one of the most common disturbances in machine tools. They are generated, for instance, due the external cutting forces in milling or internally by the servo structure itself such as torque ripples of the motor and gear mechanism. If these sinusoidal disturbances could not be rejected by the feedback control, tracking performance of the drive system would be degraded. Hence, an adaptive torque ripple compensation technique is developed in this research, which can track the amplitude and phase of the sinusoidal disturbance forces synchronized with the servo position. A suppression signal is then generated to reject the specific frequency of the disturbances. In conjunction with the ripple compensator, a robust feedback controller is designed employing the variable structure control framework. Both, controller stability and the adaptation convergence are proven using the Lyapunov theory. The proposed controller is applied to various servo systems and its performance is verified.
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Nobuhiko Henmi, Mitsuhito Ogiwara, Takuya Yamagata
Session ID: A25
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
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Motohiro Takahashi, Hironori Ogawa, Masaki Odai, Masaki Mizuochi
Session ID: A26
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
CONFERENCE PROCEEDINGS
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Miyuki Yamada, Takeshi Yanagihara, Yoshitaka Saito, Yasuhiro Tani, Jun ...
Session ID: A31
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
CONFERENCE PROCEEDINGS
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SeungBok Lee, Okiharu Kirino, Yasuhiro Tani
Session ID: A32
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
CONFERENCE PROCEEDINGS
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Yishen Lu, Kensuke Tsuchiya
Session ID: A33
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
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It has been reported that slurry dispersibility and some roughness parameters of polishing pad surface affect the polishing rates of glass-based materials. On the other hand, generation of polishing pad surface roughnesses is affected by not only the surface processing parameters, but also other factors such as the polishing pads' matrix materials, properties and structures, e.g. pores. Therefore, several kinds of polishing pads have been employed to investigate the effects of polishing slurry dispersibility and the surface roughnesses of various kinds of pads on polishing rates to find out major influential factors.
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Naoaki Ichinoho, Junnji Murata, U Zhang, Yasuhiro Tani, Takeshi Yanagi ...
Session ID: A34
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
CONFERENCE PROCEEDINGS
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Takahito Sugiura, Yasuhiro Tani, Junji Murata, Nobuyuki Nomura, Ryouic ...
Session ID: A36
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
CONFERENCE PROCEEDINGS
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2nd Report, Multi-pole Magnetization of Thin Film Neodymium Magnet and Reduction of Guideway Friction
Ryogen Fujiwara, Tadahiko Shinshi, Minoru Uehara, Michitaka Hori, Etsu ...
Session ID: A03
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
CONFERENCE PROCEEDINGS
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Nobuyuki Nomura, Ryoichi Hirokawa, Yasuhiro Tani, Junji Murata, Yu Zha ...
Session ID: A37
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
CONFERENCE PROCEEDINGS
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Masaaki Mochida, Kenichiro Yoshitomi, Atsunobu Une
Session ID: A38
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
CONFERENCE PROCEEDINGS
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Keisuke Kamijo, Yoshihiro Tanigawa
Session ID: A39
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
CONFERENCE PROCEEDINGS
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Yuichi Nishimori, Kingo Azuma, Nozomu Araki, Etsuo Fujiwara
Session ID: A43
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
CONFERENCE PROCEEDINGS
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An abrasive water jet machining has little controllability of impact power. For adding controllability to the water jet, we put piezoelectric actuator in flow path. The water jet is modulated by vibrations of this actuator which excited voltage pulses whose frequency is 88KHz. In this study, the modulated jet is impacted to aluminium plate to make holes and the depth of holes are observed by a Laser microscope. As this experiment's result, the depth of holes became shallower as voltage was increased.
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Naoki Ito, Shizuichi Higuchi, Hideo Kato, Kazuya Okawa
Session ID: A44
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
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Urara Satake, Toshiyuki Enomoto, Kenji Hirose
Session ID: A45
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
CONFERENCE PROCEEDINGS
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Hideaki Takahashi, Yoshiharu Namba
Session ID: A46
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
CONFERENCE PROCEEDINGS
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Takayuki Honma, Koichi Kawahara, Seiichi Suda
Session ID: A61
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
CONFERENCE PROCEEDINGS
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Shinichi Iwamoto, Syuhei Kurokawa, Toshiro Doi, Michio Uneda, Osamu Oh ...
Session ID: A62
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
CONFERENCE PROCEEDINGS
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-The clarification of the peeling mechanism caused by polishing heat and the application method under the control of oscillating speed -
Katsunori Takehana, Atsunobu Une, Kenichiro Yoshitomi, Masaaki Mochida
Session ID: A63
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
CONFERENCE PROCEEDINGS
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Dongjue He, Yoshihiro Morimoto, Tadahiko Shinshi, Takahiro Nakai, Shui ...
Session ID: A04
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
CONFERENCE PROCEEDINGS
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In laser beam machining, the machining speed and quality are very sensitive to the flow of the assist gas and the position of the laser beam focal point. In order to increase the cutting speed and quality, and reduce the assist gas consumption, the real-time control of the relative radial displacement between the lens axis and the assist gas jet nozzle axis (off-axis control) is one of possible solutions. Furthermore, in order to increase the machining speed and the aspect ratio of machined hole in laser piercing, the high speed adjustment of the laser beam focal point is an effective solution. To satisfy the above requirements, a six-degree-of-freedom (6-DOF) controlled magnetic-levitated (maglev) lens drive actuator was developed. A lens holder was actuated by four novel electro-magnetic driving units. Each driving unit can generate both repulsive and attractive forces in radial and axial directions by utilizing a modified Halbach array on the lens holder and air core coils on the base. Radial displacement of the lens up to ±1mm with a tracking error of 1 micron and a bandwidth of more than 150Hz was achieved; and a ±5mm stroke of the lens with a tracking error of less than 3 microns and a bandwidth of more than 100Hz was also obtained in the axial direction.
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Shintaro Isono, Keiichi Kimura, Keisuke Suzuki, Panart Khajornrungruan ...
Session ID: A64
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
CONFERENCE PROCEEDINGS
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Influence of polishing parameters on slurry flow
Yosuke Hirai, Kenichiro Yoshitomi, Masaaki Mochida, Katsunori Takehana
Session ID: A66
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
CONFERENCE PROCEEDINGS
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Kazutaka Egami, Syuhei Kurokawa, Toshiro Doi, Osamu Ohnishi
Session ID: A67
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
CONFERENCE PROCEEDINGS
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Michio Uneda, Tatsunori Omote, Kazutaka Shibuya, Yoshio Nakamura, Daiz ...
Session ID: A68
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
CONFERENCE PROCEEDINGS
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Takashi Kushida, Keiichi Kimura, Panart Khajornrungruang, Keisuke Suzu ...
Session ID: A69
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
CONFERENCE PROCEEDINGS
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Takateru Egashira, Toshiro Doi, Syuhei Kurokawa, Osamu Ohnishi, Michio ...
Session ID: A83
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
CONFERENCE PROCEEDINGS
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Makoto Sato, Wataru Ohmori, Maiko Takahashi
Session ID: A84
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
CONFERENCE PROCEEDINGS
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Tao Yin, Syuhei Kurokawa, Toshiro Doi, Tsutomu Yamazaki, Zhida Wang, Z ...
Session ID: A85
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
CONFERENCE PROCEEDINGS
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Quantitative Evaluation on Adsorption Phenomenon of Fine Particle
Yuichi Takano, Keisuke Suzuki, Panart Khajornrungruang, Keiichi Kimura
Session ID: A86
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
CONFERENCE PROCEEDINGS
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Consideration of preload control and hybrid drive
Ryota Okeya, Manabu Aoyagi, Takehiro Takano, Hideki Tamura
Session ID: B01
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
CONFERENCE PROCEEDINGS
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Masato Hayashi, Makoto Fukuda
Session ID: A06
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
CONFERENCE PROCEEDINGS
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Torsional leaf spring mechanism is a torsional displacement mechanism that can keep the bending flexure of the rotation axis small, and it can keep the rotating displacement of torsion large. We use this mechanism to the fulcrum of a displacement reduction mechanism. Therefore, the torsional stiffness is important to displacement reduction system analysis. To measure the torsional stiffness around the rotation axis, there are static methods and dynamic methods. In the static method the torsional stiffness is determined from the loading force and displacement of the lever attached to the mechanism. Also in the dynamic method, the torsional stiffness is determined from the change of resonant frequency caused by a variety loading mass on the mechanism. In this study, it was determined by measuring the dynamic torsional stiffness for torsion leaf spring mechanism that consists of four sheets of leaf spring, we describe the methods and the results.
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Eiichi Aizawa, Kazuyoshi Tsuchiya, Yasutomo Uetsuji
Session ID: B02
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
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Kouta Yamamoto, Kazuyoshi Tsuchiya, Yasutomo Uetsuji
Session ID: B03
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
CONFERENCE PROCEEDINGS
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Yasuaki Shibano, Takeshi Morita
Session ID: B04
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
CONFERENCE PROCEEDINGS
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Yusuke Kiyama, Takefumi Kanda, Koichi Suzumori, Tsutomu Ono, Kumiko Ya ...
Session ID: B06
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
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In this paper, an ultrasonic vibration microchannel device and a T-type microchannel have been studied to obtain nano-emulsions for anti-cancer drugs. This research aims at increasing the oil phase flow rate than the previous device. Emulsions that the peak of the generated droplets' diameter was 200nm were obtained when the flow rate of the water and oil phase was 100 and 10μl/min, respectively.
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Hisashi Imai, Kazuyoshi Tsuchiya, Katsutoshi Ooe
Session ID: B07
Published: September 01, 2012
Released on J-STAGE: March 01, 2013
CONFERENCE PROCEEDINGS
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