巻号一覧
59 巻, 11 号
選択された号の論文の24件中1～24を表示しています
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知識型知能化から創発型知能化へ上田 完次1993 年 59 巻 11 号 p. 1755-1760
発行日: 1993/11/05
公開日: 2009/07/23
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冨山 哲男1993 年 59 巻 11 号 p. 1761-1766
発行日: 1993/11/05
公開日: 2009/07/23
ジャーナル フリー本稿では設計を取り巻く諸条件の変化のもとで,単に設計ができればよいという設計方法論,設計支援ができればよいというCADから,いわば設計の付加価値を高めるためには,多種多様の設計知識を集積して柔軟に統合的に利用していくKnowledge Intensive Engineeringの概念が今後の設計の知能化のキーとなることを議論した.Knowledge Intensive CADはその一例である.
Knowledge Intensive CADの実現には,設計知識の整理の仕方,つまり知識の明示化,体系化,そしてシステム化のプロセスが必要である.これは今後の Knowledge Intensive Engineeringの展開に極めて重要な課題であり,精力的な研究が今後期待される.このような視点から例えばIMSプロジェクトを考え直すのも意義深いことであろう.抄録全体を表示PDF形式でダウンロード (1220K) -
井上 英夫1993 年 59 巻 11 号 p. 1767-1772
発行日: 1993/11/05
公開日: 2009/07/23
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笹島 和幸1993 年 59 巻 11 号 p. 1773-1777
発行日: 1993/11/05
公開日: 2009/07/23
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神田 雄一1993 年 59 巻 11 号 p. 1778-1783
発行日: 1993/11/05
公開日: 2009/07/23
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福田 好朗1993 年 59 巻 11 号 p. 1784-1790
発行日: 1993/11/05
公開日: 2010/05/07
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こば欠け現象の把握と加工条件, 工具形状が及ぼす影響神谷 昌秀, 谷川 義博, 坂本 正史1993 年 59 巻 11 号 p. 1791-1796
発行日: 1993/11/05
公開日: 2009/07/23
ジャーナル フリーThe purpose of this study is to improve a productivity of a manufacturing of graphite. Generally, in case of the high speed process, several chippings arise on the surface and the edge of graphite. Phenomenon of the chipping hasn't been known well. Therefore, the manufacturing is processed with a low speed. This study is to grasp a phenomenon of the chipping and an influence of the cutting condition. A style of a destruction mechanism is a crack type. There are normal cutting surface and many craters. The authors confirmed that these craters were deeper than the cutting surface. The width of edge chipping increases in proportion to the feed rate. However, it is not related to the radial depth of cut and the cutting speed. It is related to the 3-dimensional cutting force and the rigidity of the work edge. Most distinctive point is that the width of chipping is related to the cutting force on tooth face. The authors thought that it can be controlled by an angle of helical endmill, so the authors developed the left twisted endmill, which has high helical angle. It can decrease about 70% of the width of edge chipping.抄録全体を表示PDF形式でダウンロード (1064K) -
深穴生成過程の解析桑田 隆, 森田 昇, 渡部 武弘, 吉田 嘉太郎1993 年 59 巻 11 号 p. 1797-1802
発行日: 1993/11/05
公開日: 2009/07/23
ジャーナル フリーThis paper describes a mechanism of deep hole drilling of covalent bond-ceramics using a pulsed YAG laser. The deep hole drilling process was simulated by the newly developed analysis method. It was combined the ray tracing method for a laser power intensity distribution analysis and difference method for a thermal analysis. It assumed that laser beam energy was delivered by reflection from the internal wall surface of a hole in the ray tracing model. Sublimation process of silicon nitride was considered during the thermal analysis. The deep drilling hole was processed mainly by energy reflected from the internal wall surface of the hole. In this process laser power intensity became higher in the center of the hole since the laser beam was focused by the wall-reflecting effect.抄録全体を表示PDF形式でダウンロード (1000K) -
楢原 弘之, 斎藤 勝政1993 年 59 巻 11 号 p. 1803-1808
発行日: 1993/11/05
公開日: 2009/07/23
ジャーナル フリーAccuracy improvement of the models created by three dimensional photofabrication depends on the conditions whether or not a machine uses the proper photopolymer and selects laser power and scanning speed to minimize the depth variation which is caused by the laser power's and the scanning speed's stabilities. The experimental equation between exposure condition and solidified shape enables the quantitative comparison of photopolymers. Several experiments show that the solidified depth is expressed by four parameter coefficients, laser power and scanning speed. This paper discusses the comparison method of solidified depth stability using this relation.抄録全体を表示PDF形式でダウンロード (1125K) -
中村 隆, 舩橋 〓一, 藤本 英雄, 山崎 文人, 長谷川 功1993 年 59 巻 11 号 p. 1809-1814
発行日: 1993/11/05
公開日: 2010/01/20
ジャーナル フリーThis paper proposes a method to generate an offset surface between a tool and an object which is covered with free form surfaces. Crosscorrelation function is used to calculate the offset surface. For calculating the discrete crosscorrelation function, the tool shape and the free surface object are represented by Voxel representation method, which usually includes quantization errors. Intermediate values are given to the cells at the surfaces of the tool and the object to reduce the quantization errors. This offset calculation method is used for machining a free form surface object that is a die for Boubure anomaly distribution map model.抄録全体を表示PDF形式でダウンロード (5243K) -
境界摩耗の抑制山根 八洲男, 天野 直宏, 林 桂, 鳴瀧 則彦1993 年 59 巻 11 号 p. 1815-1820
発行日: 1993/11/05
公開日: 2009/07/23
ジャーナル フリーHigh speed machining of Inconel 718 with SiC whisker reinforced alumina, silicon nitride and TiC added alumina ceramic tools was carried out. All the ceramic tools tested showed the maximal value of the notch wear around the cutting speed of 100 m/min. SiC whisker and silicon nitride ceramic tools showed good performance compared to TiC added alumina ceramic tool in respect of the notch wear under the low cutting speed or low feed rate. However, over the cutting speed of 400 m/min, not only the notch wear but also the flank wear of these tool became large, while TiC added ceramic tools showed the smallest wear compared to other tools. Notch wear of these tools can be suppressed by pouring the cutting fluid at the depth of cut line.抄録全体を表示PDF形式でダウンロード (2528K) -
有気孔ビトリファイドボンドダイヤモンドホイールの研削作用 (その1)田中 武司, 羽室 由光1993 年 59 巻 11 号 p. 1821-1826
発行日: 1993/11/05
公開日: 2009/07/23
ジャーナル フリーIn order to investigate the grinding actions of the pored type diamond wheel with vitrified bond, the tangential grinding force was theoretically analysed in connecting with the constant-load grinding of Zr02-Y203. The influences of structure of wheel to the force were numerically presented by the three loading rates which directly relate to the constituent ratios of diamond abrasive grain, filler grain and bond. The force is deeply referred to the ploughing action of tiny tips on the ground surface. Filler grains in wheel decrease the cutting action of diamond abrasive grains and increase the frictional action between abrasive grains and workpiece. The calculated values of force are large on the grinding of Zr02-Y203 sintercd at higher temperature. The smallest values of force are on the grinding of Zr02-Y203 doped 3 mol% Y203, but the calculated values abruptly increase for the grinding of Zr02 doped 4 and 6 mol% Y203 due to their small plastic yield pressures.抄録全体を表示PDF形式でダウンロード (1217K) -
有限要素法定式化と一二の結果前川 克廣, 前田 正史1993 年 59 巻 11 号 p. 1827-1832
発行日: 1993/11/05
公開日: 2009/07/23
ジャーナル フリーThe present study proposes a computer simulation method which can be employed to predict cutting forces, chip formation, cutting temperature and tool wear in a real three-dimensional turning process with a continuous chip. The finite element formulation using a linear tetrahedral element has been implemented. The overconstraint problem emerged from using the element has been solved by extending the Nagtegaal-Rice functional either to a hexahedron which consists of six tetrahedra or to a pentahedron which includes three tetrahedra. The effects of elasticity, plasticity, temperature, strain rate, large strain, friction and tool wear are all included in the formulation. The three-dimensional simulation has predicted the effects of cutting action by the front and side cutting edges upon the cutting mechanism, such as the development of plastic deformation in the finished surface followed by the increase in temperature and severe wear near the edges.抄録全体を表示PDF形式でダウンロード (1026K) -
研磨量分布に与える磁場分布の影響鈴木 浩文, 小寺 直, 松永 博之, 黒部 利次1993 年 59 巻 11 号 p. 1833-1838
発行日: 1993/11/05
公開日: 2009/07/23
ジャーナル フリーThis paper describes the effect of the magnetic field distribution on the removal distribution of the workpiece surface in the magnetic field-assisted polishing method. In case of applying this method to the curved (aspheric) surface polishing, the next process is suitable. The designed shapes are first generated precisely by turning or grinding, and then the surfaces are finished only to improve the smoothness, with the previous form accuracy being maintained. Therefore, in order to carry out the uniform removal polishing using the magnetic field-assisted polishing, it is important to clarify the processing mechanism of this polishing method. In this report the relation between the distribution of magnetic field and the polishing pressure distribution was analyzed theoretically and experimentally using several shapes of magnetic poles in the polishing set-up. And, by polishing examination of the flat glass, the relations between the magnetic field distribution, polishing pressure distribution and polishing removal distribution were analyzed experimentally. As a result, the relations between the magnetic field distribution, polishing pressure distribution and polishing removal distribution were clarified.抄録全体を表示PDF形式でダウンロード (944K) -
雷管のエネルギー効率笠松 勇, 古川 浩1993 年 59 巻 11 号 p. 1839-1843
発行日: 1993/11/05
公開日: 2009/07/23
ジャーナル フリー6号瞬発電気雷管1本を, 満水の密閉円筒内で爆発させて, キャビティ半径Rc=36mm肩の丸みρr=3mmのダイスで, 直径100mm, 厚さ0.8mmの黄銅板を自由成形させたとき, 次の結果が得られた.
(1) 加工限界が見い出された.その限界値は接触角が90°, フランジからドーム頂点までのたわみZpが, ダイス寸法と変形前後の被成形材厚さt0, tだけで幾何学的に決まり, Zp=Rc+ρr+ (t0+t) /2=39.2mmになる.また, このときのドーム部分は半径がRcに等しい半球になる.
(2) 雷管の爆発エネルギーを3.0kJとすると, 加工限界で被成形材への透過エネルギーは1.2kJ, エネルギー効率は40%になる.
(3) 雷管と被成形材との距離が至近のときの透過エネルギーは, 0.79kJ、エネルギー効率は26%であり, 1200mm離したときの透過エネルギーは0.16kJ, エネルギー効率は5.5%に減少する.また, 透過エネルギーUkJ並びにエネルギー効率ηは, 距離hmに関して次式で結ばれることが分かった.
U=0.789exp (-1.31h), η=0.263exp (-1.31h).
(4) 至近距離であってもエネルギー効率は26%であり, 加工限界のときのエネルギー効率40%には及ばない.そのため, 至近距離でも加工限界に達することはない.
(5) 雷管から被成形材までの距離と, 被成形材への透過エネルギーとの関係は, Kirkwood-Betheの1/3乗恥があてはまらない.その理由は, 本実験で扱う雷管の薬量が微小であること, 及び距離が近いことに起因するものと考えられる.
(6) この計算方法は, ブラストメータの解析にも有用であると思われる.抄録全体を表示PDF形式でダウンロード (732K) -
村上 淳, 戸倉 和, 吉川 昌範, 北島 博愛, 宮内 真人, 小嶋 幹男, 久恒 正希, 水野 英明1993 年 59 巻 11 号 p. 1844-1846,1881
発行日: 1993/11/05
公開日: 2009/07/23
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盧 炳沃, 韓 應教, 直海 茂男1993 年 59 巻 11 号 p. 1847-1852
発行日: 1993/11/05
公開日: 2009/07/23
ジャーナル フリーThis paper describes a process to machine tip radius of diamond stylus as surface roughness measurement using ion sputter. The ion sputter machining produces a similar shape as the original stylus. It also controls the parameter using the current density, machining time, incidence angle of the ion beam. As the result, a stylus of any tip radius can be machined as requested. In this paper, the ion beam process is used to produce a diamond stylus with a radius of 2 μm and angle of 90°. The optimal machining condition is resulted with a radius of less than 0.5 μm. With this result, efficiency of machining reaches to 93%.抄録全体を表示PDF形式でダウンロード (981K) -
日野 元人, 佐々木 実, 藤田 一彦, 別所 芳則, 羽根 一博, 大熊 繁1993 年 59 巻 11 号 p. 1853-1858
発行日: 1993/11/05
公開日: 2009/07/23
ジャーナル フリーIn this paper, the scanning force microscope (SFM) using optical heterodyne interferometry is reported. The birefringent double-focus lens was used as a beam splitter-recombiner, and thus, the two interfering beams passed through a common optical path and the reference plane of the interferometer was located on the sample surface. Therefore, the deflection of the cantilever was detected without being affected by the irregular movement of the stage and the environmental conditions, such as thermal and vibrational disturbances. Since the SFM system was combined with a laser interferometric microscope and a conventional optical microscope, the sample was positioned easily by the visual inspection, and it was measured by the laser interferometry.抄録全体を表示PDF形式でダウンロード (1402K) -
非線形ばね試験ユニットによる影響評価寺田 英嗣, 林 輝1993 年 59 巻 11 号 p. 1859-1864
発行日: 1993/11/05
公開日: 2009/07/23
ジャーナル フリーIt is important to eliminate the non linear spring characteristics for positioning accuracy as like as the mechanical hysteresis characteristics. So that, the characteristics has to be analyzed to improve the dynamic performaces. At first, the “Non Linear Spring Test Unit” is developed, which consists of two linear spring characteristics parts and mass. The magnitude of Non linearity is defined which evaluates the influences on these dynamics. Then these in fluences are tested using this unit, it is proved that the non linear spring characteristics make worse on positioning accuracy at the mechanical resonance frequency, and the allowable non-linear spring magnitude can be quantified as like as the mechanical hysteresis characteristics.抄録全体を表示PDF形式でダウンロード (924K) -
明 愛国, 伊藤 忠司, 牧野 洋1993 年 59 巻 11 号 p. 1865-1870
発行日: 1993/11/05
公開日: 2009/07/23
ジャーナル フリーA small SCARA robot for planar continuous path control has been developed. To realize high-speed and high-precision continuous path control, the robot was carefully designed by considering path planning, motion design, mechanism design, control system design, and teaching method design. The absolute accuracy performed by the robot is ± 0.4mm in the standard working area (about A4 paper size), and the maximum speed of 500mm/s is obtained under reasonable accuracy. The accuracy is regarded as small as one tenth (1/10) of that performed by the conventional CP robots. The design policy is described and the experimental results are reported in this paper.抄録全体を表示PDF形式でダウンロード (1012K) -
趙 南圭, 塚田 忠夫, 高橋 正明1993 年 59 巻 11 号 p. 1871-1876
発行日: 1993/11/05
公開日: 2009/07/23
ジャーナル フリーThis paper presents the new technique to measure the surface roughness profiles correcting an orientation of specimen surface in one operation. The contact stylus profilometer is equipped with the table whose inclination is controlled by the computer. The positioning of the stylus tip in the vertical direction is corrected at the same time. For assuring to measure profiles in length of 5.6mm, the surface profile data for control is demanded to be obtained in the length of 1mm. This measuring length varies depending on form errors such as the waviness. Then this paper gives the new technique to correspond the above-mentioned problem.抄録全体を表示PDF形式でダウンロード (953K) -
加藤 秀雄, 計 金郷, 花岡 忠昭, 山口 政男1993 年 59 巻 11 号 p. 1877-1880
発行日: 1993/11/05
公開日: 2009/07/23
ジャーナル フリーIn order to suppress vibration due to unbalance of rotating spindles, many kinds of automatic balancing apparatus have been developed so far. However, they cannot work sufficiently at a high rotational speed because of incorrect actions of such mechanisms in a rotating unit of the apparatus as a compensating mass movement mechanism, power supply mechanism, etc. Most of the incorrect actions are caused by complexity of the mechanisms. In this research, a balancing apparatus composed of highly simplified mechanisms has been newly developed by utilizing ultrasonic motors which can rotate at a very low speed without any reducer and stall withoutany brake. In the rotating unit of the developed apparatus, two ultrasonic motors on a rotor of which a compensating mass is stuck, printed circuit boards and rechargeable batteries as a power source are equipped. The unit is installed on the objective rotating spindle so that the motor axes may be aligned with the spindle axis and the motors are driven through infrared PCM signal from the stationary unit. Software suitable to control the hardware has been also developed by adopting the steepest gradient method.抄録全体を表示PDF形式でダウンロード (599K) -
画素座標から寸法座標への整合的変換処理北嶋 克寛, 吉田 誠, 諏訪 光信1993 年 59 巻 11 号 p. 1884-1890
発行日: 1993/11/05
公開日: 2009/07/23
ジャーナル フリーThis paper presents consistent transformation processing from pixel coordinates to dimensional coordinates, which plays an important role in the final stage of the whole recognition method for mechanical drawings. The output data of the both bottom-up and top-down processing are represented in pixel coordinates, which have inevitable quantization errors. So, they should be transformed into coordinates in terms of dimensions that give consistent geometric constraints to all drawing elements. The authors have realized to solve this problem by developing a unique method called 'dimension-matching, ' making use of the structural model and automatically generating simultaneous linear equations with respect to internal dimensions for outlines. The way of implementing this processing is described and some examples are finally shown.抄録全体を表示PDF形式でダウンロード (1222K) -
縮閉線の決定と有理Bézier曲線による表現東正 毅, 毛利 仁, 斉藤 剛1993 年 59 巻 11 号 p. 1891-1896
発行日: 1993/11/05
公開日: 2009/07/23
ジャーナル フリーデザイナの好ましいとする曲線の評価基準を設定し, これを満足する曲率変化の滑らかな曲線を生成する方法を提案した.
本方法は,
(1) デザイナの形状に対する意図を幾何的な境界条件として与え, これを満足するように縮閉線を円すい曲線として定める.
(2) この縮閉線に対する伸開線を, 有理3次Bézier曲線として近似する.ものである.
本方法では, 縮閉線により直接曲率変化を規定しているため, 生成された曲線は, 曲率変化のレベルまで滑らかとなり, デザイナの意図を満足することが確認された.また, 従来, 表現力はあるがその自由度の制御が難しいとされていたNURBSについて, これを曲率変化を滑らかとする曲線生成に適用し, その自由度と表現力を有効に活用することができた.抄録全体を表示PDF形式でダウンロード (891K)
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