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Yoshiyuki Sanada, Masafumi Yoshimaru, Hiroshi Suzuki
Session ID: D38
Published: 2008
Released on J-STAGE: September 03, 2008
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Jianguo Liang, Hiroyuki Koresawa, Hiroyuki Narahara, Hiroshi Suzuki
Session ID: D39
Published: 2008
Released on J-STAGE: September 03, 2008
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Takayuki Nakano, Mutsumi Toge, Junji Watanabe
Session ID: D43
Published: 2008
Released on J-STAGE: September 03, 2008
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Mikinori Ueoka, Masahiro Higuchi, Tomomi Yamaguchi, Takashi Sugimoto, ...
Session ID: D44
Published: 2008
Released on J-STAGE: September 03, 2008
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One of the effective methods for obtaining an ultra-precision surface is utilization of the mechanochemical reaction that occurs at the interface between a stone and a workpiece. In our study, it was confirmed from the thermodynamic analysis that BaSO
4 in contact with steel oxidizes the steel surface. On the basis of this finding, vitrified diamond stones containing BaSO
4 were made experimentally, and their performance was evaluated. As a result, it was found that the diamond stone containing BaSO
4 abrasive is superior in surface finish to conventional diamond stone because of the synergistic effect of the mechanical action of the diamond abrasive and chemical action of the BaSO
4 abrasive.
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Takaaki Hirata, Masahiro Higuchi, Tomomi Yamaguchi, Takaaki Yamano, Sh ...
Session ID: D45
Published: 2008
Released on J-STAGE: September 03, 2008
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The mechanochemical superabrasive stone,i.e., the CBN stone containing CeO
2 abrasive generates efficiently a smooth surface with negative skewness that is suitable for rolling bearing.It is also expected that the addition of CeO
2 abrasive to the CBN stone has an effect of decreasing the damaged layer.Therefore, the experimental stress analysis by X-ray and the dynamic hardness test were carried out.The result showed that the depth of damaged layers and the compressive residual stress in damaged layers and compressive residual stress in damaged layers decreased due to the chemical action of CeO
2 abrasive.
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Takeshi Yoshida, Akira Hosokawa, Tatuaki Hurumoto, Ryutarou Tanaka, Ta ...
Session ID: D46
Published: 2008
Released on J-STAGE: September 03, 2008
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Manabu Iwai, Dong Qiang, Shinichi Ninomiya, Sadao Sano, Tetsutaro Uema ...
Session ID: D47
Published: 2008
Released on J-STAGE: September 03, 2008
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Fumihiro Itoigawa
Session ID: D61
Published: 2008
Released on J-STAGE: September 03, 2008
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Evaluation by Measuring Plane Grinding forces
Tomio Matsubara, Yukihiro Ikai, Naoki Oda
Session ID: D63
Published: 2008
Released on J-STAGE: September 03, 2008
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An easy ecological grinding method by emulsion mist of minimal quantity vegetable oil is proposed. The grinding performance is evaluated by measuring grinding forces. As the result, lower grinding forces of proposed method are obtained by comparing the forces with dry or noraml emulsion grindings.
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Toshiaki Wakabayashi, Satoshi Suda
Session ID: D64
Published: 2008
Released on J-STAGE: September 03, 2008
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Fumihiro Itoigawa, Kei-ichi Kawata, Takashi Nakamura, Satoshi Suda, Ha ...
Session ID: D66
Published: 2008
Released on J-STAGE: September 03, 2008
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Yuki Arakawa, Hideki Aoyama
Session ID: D67
Published: 2008
Released on J-STAGE: September 03, 2008
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The objective of this study is to develop a system to determine optimal machining conditions for minimizing energy consumed in a machine tool. To realize this objective, a module to estimate cutting energy and energy consumed in each unit of a machine tool is developed. Cutting energy in square end milling and ball end milling is estimated by the cutting force which can be derived from the cutting area and the specific cutting force. And, energy consumed in each unit of a machine tool is calculated by the electric energy model defined with basic experiments.
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Yuki Asano, Yasuhiro Kamata, Toshiyuki Obikawa
Session ID: D68
Published: 2008
Released on J-STAGE: September 03, 2008
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Shinichi Ninomiya, Qiang Fan, Minoru Ishida, Toshiharu Shimizu, Manabu ...
Session ID: D69
Published: 2008
Released on J-STAGE: September 03, 2008
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Keizo Tanaka, Hiroyuki Sasahara, Toshihito Kamioka, Tetsushi Matsumaru ...
Session ID: D72
Published: 2008
Released on J-STAGE: September 03, 2008
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Recently, the technology of rapidly making trial models and molding which is called rapid prototyping has come to be used by many fields. The object of this report is to develop the technology which creates the metallic shaped form at high speed by laminating the molten metals by the arc discharge. It is a technique of making the metal molten state, and piling it along the outline of the shaped form. In addition, the heat influence on the surface of the formed bead and the height change of the bead were observed.
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Yuta Okamura, Hiroyuki Narahara
Session ID: D73
Published: 2008
Released on J-STAGE: September 03, 2008
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Hiroyasu Yoshii, Michio Kojima, Hiroyuki Narahara, Hiroyuki Koresawa, ...
Session ID: D74
Published: 2008
Released on J-STAGE: September 03, 2008
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Metal Laser Sintering with High Speed Milling is the processing method that combines layered fabrication with High Speed Milling. This method can control air permeability structure by sintering. We confirmed that the air permeability structure has good effect on failures of injection molding. However, the air permeability structure has limits to improve the strength keeping constant air permeability. Therefore, we propose new fabrication method of air permeability structure. As Metal Laser Sintering with High Speed Milling method is one of the laminated molding methods, we forecast that the structure has anisotropy and the anisotropy influences air permeability. We investigate that the influence of the anisotropy in the structure fabricated by our method.
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Report 6 Study on relation between strength and air permeability of Metal Sintering Mold by build method of air permeability structure
Toshihisa Tsuda, Hiroyasu Yoshii, Michio Kojima, Hiroyuki Narahara, Hi ...
Session ID: D75
Published: 2008
Released on J-STAGE: September 03, 2008
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Experimental Examination on the Effect of Thermal Characteristics of Filler
Shunsuke Oizumi, Toshiki Niino
Session ID: D77
Published: 2008
Released on J-STAGE: September 03, 2008
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Daisuke Aizawa, Yoshikazu Kobayashi, Kenji Shirai
Session ID: D78
Published: 2008
Released on J-STAGE: September 03, 2008
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This paper proposes a micro-parts molding system using a die which can be transformed to any shape. This system combines imprinting technology with precision dies, realizing inexpensive mass production of micro plastic parts. The fundamental principle of the system is as follows. First, photostrictive element PLZT ceramics whose shapes can be changed using ultraviolet ray are used for die. The irradiation range of the ultraviolet ray is adjusted using a mask so that the die can be changed to any desired shape. Next, the die is filled with photopolymerizing polymer and closed in the glass plate. Ultraviolet ray is then irradiated on the die to mold the part. In this development, first a measuring device was developed in order to verify the characteristics of the PLZT ceramics. The transition of the transformation and the transformation response time of the PLZT ceramics while ultraviolet ray was irradiated were also measured.
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Shoichiro Tanaka, Yoshikazu Kobayashi, Kenji Shirai
Session ID: D79
Published: 2008
Released on J-STAGE: September 03, 2008
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A three-dimensional micro part molding system was developed for the purpose of improving parts accuracy. This machine applies the progressive die fabrication method it fills photopolymerizing polymer into cavities arranged in row and irradiates ultraviolet rays to create three dimensional small parts. This system enables multi-layer laminated shapes of several hundred um to be created for improving and evaluating shape accuracy.
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Daisuke Kou, Yoshio Ichida, Ryunosuke Sato
Session ID: D81
Published: 2008
Released on J-STAGE: September 03, 2008
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Keiichiro Nonaka, Kojiro Tamaru, Masao Nagase, Hiroshi Yamaguchi, Shin ...
Session ID: D82
Published: 2008
Released on J-STAGE: September 03, 2008
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Juanjuan Tian, Yoshitsugu Kamiya, Hiroaki Seki, Masatoshi Hikizu
Session ID: D83
Published: 2008
Released on J-STAGE: September 03, 2008
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This paper proposes a new algorithm for V-F transformation and it is applied to a numerical controller. Unlike the existing models which operate with a fixed frequency, the frequency of pulse series produced by the numerical controller can be freely changed according to real-time velocity requirements by adopting the proposed method. Moreover, acceleration of the controller can also be controlled within the range of the motor system. Therefore, wind-up of the system caused by exceeding acceleration can be avoided. Structure and parameters of the numerical controller are thoroughly described in this paper, and method of adjusting the parameters of the controller to adapt to the servo system's torque - frequency characteristic is also introduced. At last, effectiveness of velocity and acceleration control using the proposed V-F transformation method is demonstrated by simulation results.
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Takahito Baba, Kenichi Hiratsuka
Session ID: D84
Published: 2008
Released on J-STAGE: September 03, 2008
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Kazuhiko Umeda, Hiromitsu Gotoh, Atsutoshi Hirao, Naotake Mohri
Session ID: E02
Published: 2008
Released on J-STAGE: September 03, 2008
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Atsushi Kameyama, Masanori Kunieda, Sadao Sano
Session ID: E03
Published: 2008
Released on J-STAGE: September 03, 2008
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Ju-Kyoung Lee, Hiromitsu Gotoh, Takayuki Tani, Hideki Takezawa, Naotak ...
Session ID: E04
Published: 2008
Released on J-STAGE: September 03, 2008
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Takayuki Tani, Hiromitsu Gotoh, Naotake Mohri
Session ID: E05
Published: 2008
Released on J-STAGE: September 03, 2008
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Masahiro Sakuta, Atsutoshi Hirao, Takayuki Tani, Hideki Takezawa, Naot ...
Session ID: E07
Published: 2008
Released on J-STAGE: September 03, 2008
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Hideki Takezawa, Tadashi Asano, Naotake Mohri
Session ID: E08
Published: 2008
Released on J-STAGE: September 03, 2008
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Observation of heat-affected zone
Atsutoshi Hirao, Takayuki Tani, Naotake Mohri, Yasushi Fukuzawa
Session ID: E09
Published: 2008
Released on J-STAGE: September 03, 2008
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Haruo Sai, Takayuki Tani, Yoshihide Kuwabara, Naotake Mohri, Nagao Sai ...
Session ID: E10
Published: 2008
Released on J-STAGE: September 03, 2008
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Kenji Morimoto, Masanori Kunieda
Session ID: E14
Published: 2008
Released on J-STAGE: September 03, 2008
CONFERENCE PROCEEDINGS
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Akira Kojima, Masanori Kunieda
Session ID: E15
Published: 2008
Released on J-STAGE: September 03, 2008
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Masahide Yamashita, Hirohito Kai, Yoshiaki Akematu, Yasushi Fukuzawa, ...
Session ID: E16
Published: 2008
Released on J-STAGE: September 03, 2008
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Relationship between bubble shape and removal volume of discharge crater
Hideki Takezawa, Daisuke Kobayashi, Tadashi Asano, Naotake Mohri
Session ID: E17
Published: 2008
Released on J-STAGE: September 03, 2008
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Teruya Doke, Shinya Hayakawa, Fumihiro Itoigawa, Takashi Nakamura
Session ID: E18
Published: 2008
Released on J-STAGE: September 03, 2008
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Yoichi Shiraishi, Shinichiro Otaka, Manabu Iwai, Shinichi Ninomiya, Hi ...
Session ID: E20
Published: 2008
Released on J-STAGE: September 03, 2008
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Masato Isogai, Haruki Obara, Takeshi Gouda
Session ID: E21
Published: 2008
Released on J-STAGE: September 03, 2008
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Katsushi Furutani, Yasuo Murase, Shuichi Arakawa
Session ID: E22
Published: 2008
Released on J-STAGE: September 03, 2008
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This report deals with the machining performance of electro-chemical discharge machining (ECDM) with multiple electrodes. ECDM is used to machine grooves and holes on insulated materials such as glass. However, many cracks are observed around a machined hole because of the accumulation of discharge heat. The discharge current was forced dispersed by switching the electrode to decrease the cracks. Its machining performance was compared with those with multiple electrodes connected electrically in parallel and a single electrode.
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Satoshi Ohshiro, Masanori Kunieda, Naohisa Iwamoto
Session ID: E23
Published: 2008
Released on J-STAGE: September 03, 2008
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This paper describes an application of electrolyte jet machining to manufacturing of a saw wire with dimples on its surface. Wear of the slit nozzle due to electrolysis caused by the local cell phenomenon was prevented by using a nozzle made of a single material of stainless steel. Choking of the nozzle due to the electro-plating phenomenon was solved by removing heavy metal ions from the electrolyte. Thus continuous machining was carried out without a change in the shape of the dimples. Moreover, two dimples were machined simultaneously using a pair of slit nozzles of 50µm in width. When the distance between two flat jets was 200µm, the electrolyte flows were interfered on the wire surface, generating a redundant etch pit.
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Effects of Original Powder Characteristics
Keiji Yukihiro, Yasushi Fukuzawa, Naotake Mohri, Nagao Saito, Takayuki ...
Session ID: E31
Published: 2008
Released on J-STAGE: September 03, 2008
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Yuji Shimada, Yasushi Fukuzawa, Takayuki Tani, Naotake Mohri
Session ID: E32
Published: 2008
Released on J-STAGE: September 03, 2008
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Effect of wire electrode material on electric discharge machining properties
Kensei Kaneko, Yasushi Fukuzawa, Ryuichi Yamada, Yuji Kaneko, Takenori ...
Session ID: E33
Published: 2008
Released on J-STAGE: September 03, 2008
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Machining mechanism of insulating Si3N4 Ceremics
Hiromitsu Gotoh, Takayuki Tani, Naotake Mohri
Session ID: E34
Published: 2008
Released on J-STAGE: September 03, 2008
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Junpei Fukuoka, Masahide Yamashita, Ken Yamashita, Masayoshi Ogata, To ...
Session ID: E36
Published: 2008
Released on J-STAGE: September 03, 2008
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Shinya Onoda, Akira Okada, Yoshiyuki Uno, Koji Tabuchi
Session ID: E37
Published: 2008
Released on J-STAGE: September 03, 2008
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The purpose of this study is to investigate the most efficient debris exclusion in wire EDM. The debris particle motion and flow field during wire EDM are analyzed by CFD (Computational Fluid Dynamics). This report deal with the influence of wire's running speed and the thickness of workpiece on debris particle furthermore, the observation result by high speed video camera was compared with CFD result for confirming the reliability.
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Shunsuke Hirai, Masanori Kunieda
Session ID: E38
Published: 2008
Released on J-STAGE: September 03, 2008
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Masahiro Nakata, Shinya Hayakawa, Fumihiro Itoigawa, Takashi Nakamura, ...
Session ID: E39
Published: 2008
Released on J-STAGE: September 03, 2008
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