巻号一覧
56 巻, 9 号
選択された号の論文の31件中1～31を表示しています
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矢田 恒二1990 年 56 巻 9 号 p. 1575-1580
発行日: 1990/09/05
公開日: 2009/06/30
ジャーナル フリーPDF形式でダウンロード (978K) -
加藤 正名, 加藤 康志郎1990 年 56 巻 9 号 p. 1581-1584
発行日: 1990/09/05
公開日: 2009/06/30
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村木 正芳1990 年 56 巻 9 号 p. 1585-1588
発行日: 1990/09/05
公開日: 2009/06/30
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畑 一志1990 年 56 巻 9 号 p. 1589-1592
発行日: 1990/09/05
公開日: 2010/02/16
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相原 了1990 年 56 巻 9 号 p. 1593-1596
発行日: 1990/09/05
公開日: 2009/06/30
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町田 尚1990 年 56 巻 9 号 p. 1597-1601
発行日: 1990/09/05
公開日: 2010/02/16
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加藤 康司1990 年 56 巻 9 号 p. 1602-1606
発行日: 1990/09/05
公開日: 2009/06/30
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中川 邦彦, 森 一夫1990 年 56 巻 9 号 p. 1607-1610
発行日: 1990/09/05
公開日: 2009/06/30
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高橋 道郎, 大塚 二郎1990 年 56 巻 9 号 p. 1611-1614
発行日: 1990/09/05
公開日: 2009/06/30
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河村 英男1990 年 56 巻 9 号 p. 1617-1621
発行日: 1990/09/05
公開日: 2009/06/30
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川久保 洋一, 河村 喜雄, 森田 健二1990 年 56 巻 9 号 p. 1622-1625
発行日: 1990/09/05
公開日: 2009/06/30
ジャーナル フリー塗布型磁気ディスクは安価であり, かつ「トライボロジーにかかわる信頼性技術では, 他の媒体に比べ圧倒的な実績を持つ」ので信頼性が最重要課題である大容量装置に用いられている.記録密度についても磁性膜の薄膜高含率化, Baフェライト磁性粉, メタル磁性粉等による高密度化が研究されている.表面加工においてもさらに高精度の面を得るための技術開発が必要となっている.
以上, 磁気ディスク記憶装置開発以来長期間記録媒体として用いられてきた塗布型磁気ディスクの加工について簡単にまとめた.有機複合材料の高精度加工の例として他の分野の方々の参考になれば幸いである.抄録全体を表示PDF形式でダウンロード (714K) -
利根川 進1990 年 56 巻 9 号 p. 1626-1631
発行日: 1990/09/05
公開日: 2009/06/30
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分子生物学と精密工学高辻 正基, 利根川 進, 中村 桂子, 中村 雄二郎, 三輪 敬之, 吉川 弘之, 河合 正治1990 年 56 巻 9 号 p. 1632-1639
発行日: 1990/09/05
公開日: 2009/06/30
ジャーナル フリーPDF形式でダウンロード (1732K) -
コホモロジー群の局所拡大による非多様体モデリング村端 晋一, 東 正毅1990 年 56 巻 9 号 p. 1641-1646
発行日: 1990/09/05
公開日: 2009/06/30
ジャーナル フリー形状モデリングにおける立体の表現, 干渉を扱うため, 以下のように非多様体としての統一的な位相管理法を確立した.
(1) 非多様体の定義を明確にし, これに基づいてオイラー・ポアンカレの式を拡張した.
(2) ハーフエッジ構造の拡張により, 非多様体を扱うデータ構造としてサイクル構造を提案した.
(3) 新しいオイラー・ボアンカレ式に対応して, 非多様体のオイラーオペレーションを定義した.
(4) 以上を用いて, 立体の集合演算過程の管理と, 閉じた曲面の立体化などの曲面演算が, 非多様体として統一的に行われる方法を開発した.
これらは, 局所ホモロジー群/コホモロジー群の一貫した論理体系を持ち, 従来の多様体の枠組に納まらない, 大域と局所が微妙に絡む局面で強力な論理基盤を与える.今後は, 幾何演算と組み合わせ, 形状モデリングシステムとして完成してゆく.抄録全体を表示PDF形式でダウンロード (888K) -
吉村 允孝1990 年 56 巻 9 号 p. 1647-1652
発行日: 1990/09/05
公開日: 2009/06/30
ジャーナル フリーThis paper proposes a design optimization method for machine structures consisting of the multiphase structural modeling of ideal, intermediate, and detailed models. First, the ideal characteristics are obtained for a specific ideal model. Then, the detailed designs are determined so that the characteristics in the detailed model are as close to the ideal characteristics as possible. An intermediate model is introduced between the ideal model and the detailed model for easily and surely obtaining the final detailed designs. This method not only effectively generates optimum detailed designs of machine structures but also brings about an easy realization of the optimum characteristics in practical manufactured machine products. As an example for demonstrating the effectiveness of this method, it is applied to a machine-tool structural model.抄録全体を表示PDF形式でダウンロード (1410K) -
ロストモーションの生成機構垣野 義昭, 黎 子椰, 八木 史也, 東本 暁美1990 年 56 巻 9 号 p. 1653-1658
発行日: 1990/09/05
公開日: 2009/06/30
ジャーナル フリーCharacteristic of static deformation for ball-screw driving system of NC machine tools, and generating mechanism of the lost motion have been studied in this paper. The behavior of ballscrew driving system with viscoelasticity can be approached by spring-dashpot model. The lost motion is due to elastic deformation caused from resistance of guide, related with viscosity coefficient and load history in ball-screw driving system.抄録全体を表示PDF形式でダウンロード (1043K) -
その開発理念と基本的構造李 沢群, 神谷 好承, 岡部 佐規一, 横山 恭男, 戸上 常司1990 年 56 巻 9 号 p. 1659-1664
発行日: 1990/09/05
公開日: 2009/06/30
ジャーナル フリーIn a flexible automated assembly system, many kinds of parts must be assembled at one assembly workstation in a limited space. In order to meet such a requirement, following problems have to be solved. (1) Logistics of parts flow, (2) Space that parts feeding equipments take up, (3) The techniques of programmable parts supplying and feeding from three dimensionally stacked partsfeeding equipments, (4) Development of hands which can handle multiple types of parts. As one approach to solve those problems, a parts supplying robot “Lazy Monkey” has been developed. In this report, necessity of parts supplying robot is discussed and its design concept are showed. Fundamental structure is given and several characteristics are discussed.抄録全体を表示PDF形式でダウンロード (904K) -
清水 茂夫1990 年 56 巻 9 号 p. 1665-1670
発行日: 1990/09/05
公開日: 2009/06/30
ジャーナル フリー直動玉軸受システムに関する負荷分布, 剛性, 負荷能力, 寿命解析などを総合して信頼性解析ということにしてそのアルゴリズムを明確にし, 一例として開放型直動玉軸受で構成されたXテーブルに対する負荷分布式や寿命式を導いて信頼性解析を行い, 種々の計算結果に検討を加えた.その結果,
(1) 外部荷重条件に対応してシステム内最大分布負荷を最小にする最適予圧がある.したがって, 最適予圧を超えた過剰予圧を付与することはシステムの信頼性をかなり低下させることになる.
(2) システムに予圧を付与すると最大分布負荷を低減し, 負荷分布状態や剛性を著しく改善する.
(3) 軸受システムの基本静定格荷重CQならびに基本動定格荷重Cは荷重偏心率Ex, Ezが増大するほど著しく低減し, Ex=Ez=1のとき, C0は1軸受のC0に近付き, Cは1軸受のCよりさらに小さい値をとるようになることがわかった.抄録全体を表示PDF形式でダウンロード (2560K) -
村奈嘉 与一, 稲葉 誠, 浅野 武夫, 古川 英一1990 年 56 巻 9 号 p. 1671-1676
発行日: 1990/09/05
公開日: 2009/06/30
ジャーナル フリーThis paper discusses the pitch (angular tilt) of a moving platform, which is the main factor to determine the accuracy of motion in parallel spring movements. As major causes of the pitch the following factors are considered : (1) inaccuracies of construction such as the inequality in free lengths of the two springs and the inequality in separation of the two springs, and (2) the height at which to drive the platform. The theoretical analyses of the effects of these factors on the pitch, and the experiments conducted to verify the validity of the analyses, are presented. It is shown that the pitch due to the driving condition can be eliminated by proper selection of the driving point. It is also shown that the pitch due to the inequality in separation of the two springs can be eliminated by adjusting the length of a moving platform. Description of a variable-length moving platform, which was devised for this purpose, is included.抄録全体を表示PDF形式でダウンロード (964K) -
林 巌, 岩附 信行1990 年 56 巻 9 号 p. 1677-1682
発行日: 1990/09/05
公開日: 2009/06/30
ジャーナル フリーThe FFT has a restriction that the number of data to be analyzed must be a power of two. If the FFT hasn't the restriction, it will be very useful. The correct formula of the universal FFT, which analyzes the arbitrary number data, is then derived by using the discrete convolution concept. The calculational procedure is also presented in this paper. The universal FFT uses 4 times as large memory as the FFT does, and analyzes the data about one-tenth times as fast as the FFT does. The FFT supplemented with zeros, which is used when the data number is smaller than the power of two, induces various calculational errors while the universal FFT gives the exact amplitudes and phases of the original data, and is much faster than the discrete Fourier transformation (DFT).抄録全体を表示PDF形式でダウンロード (926K) -
上田 隆司, 山田 啓司, 杉田 忠彰1990 年 56 巻 9 号 p. 1683-1685
発行日: 1990/09/05
公開日: 2009/06/30
ジャーナル フリーPDF形式でダウンロード (549K) -
Ni-Cr系自溶合金を切削した場合のCBN工具の摩耗について乾 保之, 速水 尚, 生田 稔郎1990 年 56 巻 9 号 p. 1686-1691
発行日: 1990/09/05
公開日: 2009/06/30
ジャーナル フリーA spray coated self-fluxing alloy shows a hardened unhomogeneous structure which mostly consists of small Cr grains and other compounds fused within a Ni matrix. It is very difficult to cut. This study investigates tool wear when cutting self-fluxing alloy with CBN tools of different CBN contents, bonding agent and honed edge angles of different shapes. When cutting this alloy, tools may wear and chipping due to the action of smallhard grains in thestructures. Average flank wear decreases as the CBN increase. The most suitable tools are with a CBN of 60 wt% contents, with an oxide system bonding agent. The honed edge angle is about 25 degrees.抄録全体を表示PDF形式でダウンロード (8347K) -
松原 十三生, 山本 久隆, 水本 洋, 坂田 晃1990 年 56 巻 9 号 p. 1692-1697
発行日: 1990/09/05
公開日: 2009/06/30
ジャーナル フリーThis paper deals with the analysis of work regenerative chatter in traverse grinding. Two factors which affect the chatter stability are considered in the theoretical analysis. One is dynamic grinding force due to the vibration velocity, and the other is contact behaviour between the grinding wheel surface and the workpiece surface. By this analysis, it is shown that high damping coefficient, high natural frequency and low specific contact stiffness suppress the chatter effectively, but the effect of specific grinding energy is small. Furthermore, it is confirmed in the experiment that the grade of a grinding wheel scarcely affects the chatter stability.抄録全体を表示PDF形式でダウンロード (1225K) -
弾性応力とビッカース硬さの相関香川 勝一, 西本 廉1990 年 56 巻 9 号 p. 1698-1704
発行日: 1990/09/05
公開日: 2009/06/30
ジャーナル フリーThe relations between elastic stresses and Vickers microhardness were investigated to establish the method for evaluating the residual stress from hardness variations. The results obtained are as follows : (1) The hardness decreases linearly with the tensile stresses and increases linearly with the compressive stresses. The decrease rate of hardness by tensile stresses is larger than the increase rate of hardness by compressive stresses. (2) When the elastic stresses are applied to the specimens that the residual stresses were induced, the above-mentioned relations is realized between the applied stresses and hardness. (3) The evaluated values of residual stress by the above-mentioned method correspond to the residual stresses in layer closely adjacent to machined surface.抄録全体を表示PDF形式でダウンロード (1513K) -
酸化けい素蒸着膜工具の経時変化西口 隆, 桝田 正美1990 年 56 巻 9 号 p. 1705-1710
発行日: 1990/09/05
公開日: 2009/06/30
ジャーナル フリーIn the polishing method of a diamond stylus for video disk player (CED type) using siliconoxide deposited polishing disk, stock removal rate of the diamond stylus reduces with elapsed time after the deposition. To clarify this phenomenon, change of the deposited siliconoxide is discussed experimentally in this paper. IR absorption analysis is carried out to investigate H2O absorption, Si-OH generation and oxidation of Si in the siliconoxide deposited. In the optimum siliconoxide that is deposited with SiO2 in O2 plasma, H2O absorption is started just after the deposition, although, the oxidation of Si is not generated until 300 hours elapsing after the deposition. Mechanical strength of the siliconoxide deposited increases with the elapsed time after the deposition, however, dynamic friction coefficient reduces to 0.01 from 0.1 with 5 days elapsing after the deposition owing to increment of H2O and Si-OH. This is a reason for the reduction of the stock removal rate with the passage time from the deposition. It is important to deposit the siliconoxide just before the polishing of diamond stylus in this polishing method.抄録全体を表示PDF形式でダウンロード (1058K) -
ニモニック80Aの被削性 (第2報)升田 雅博, 中条 義輝1990 年 56 巻 9 号 p. 1711-1716
発行日: 1990/09/05
公開日: 2009/06/30
ジャーナル フリーIn dry cutting of nimonic 80 A, which is one of nickel-base alloys, the remarkable chipping or/and fracture occur in the boundary region of the side cutting edge. The life of various tool materials is mainly determined by this boundary failure. This tool failure is caused by large cutting forces due to the work hardening in the thin layer near the surface of the workpiece. In this paper, the influence of cutting fluids on the failure of various tool materials is experimentally investigated. With oil-base fluids the work hardening is suppressed and boundary fracture decreases in comparison with dry cutting and water-base fluids. This effect is remarkable, especially for TiC- or Al2O3-coated tools. The boundary wear also decreases for tungsten carbide K 10 if the amount of the extreme-pressure agents in oil-base fluids is increased. The effect of cutting fluids, however, can hardly be expected for the flank wear, of the other parts except the boundary.抄録全体を表示PDF形式でダウンロード (5085K) -
1行程研削の場合鴻巣 健治1990 年 56 巻 9 号 p. 1717-1722
発行日: 1990/09/05
公開日: 2009/06/30
ジャーナル フリーIn external cylindrical traverse grinding of a slender workpiece, the intermittent grinding phenomenon that the workpiece is separated from the wheel during grinding can be frequently observed. In such a case, the workrest is usually used. This paper deals with the supporting characteristics of the noncontact pneumatics workrest and the investigation of workpiece's behavior in grinding and the cylindrical accuracy under this kind of workrest. The obtained results are as follows : The supporting force is not hardly influenced clearance between workpiece and workrest, so the pre-shape of workpiece does not affect the rotational characteristics of this workrest. With the pneumatic workrest, the intermittent phenomenon in grinding does not generate and the improvement of cylindrical accuracy is recognized.抄録全体を表示PDF形式でダウンロード (870K) -
久曽神 煌, 渡部 浩司1990 年 56 巻 9 号 p. 1723-1728
発行日: 1990/09/05
公開日: 2009/06/30
ジャーナル フリーLapping has been used as a finishing method to improve roundness accuracy of cylindrical shafts and holes. However, little has been published on the theoretical analysis of the finishing mechanism for high precision polygonal cross sections. This paper offers two methods for finishing polygonal holes, whose shapes are ellipsoidal. triangular, four-protrusion and so on. By one method, the amplitude of the interest Fourier component of out-of-roundness keeps constant. while the other components are decreased. using “regular polygonal lap”. By the other method, the amplitude can be increased for any Fourier component using special types of lapping tools produced by applying the “Tripod” roundness measuring method, using one of the tripod lapping tools. the magnitude for the four-protrusion component was increased from 7.64 μm to 8.27μm. while the other components were decreased. Out-of-roundness improved from about 40 μm to about 30 μm. This study shows that any component of the out-of-roundness can be increased, based on a theoretical analysis, as a result many improvements on the new lapping methods. called “tripod lap”.抄録全体を表示PDF形式でダウンロード (2297K) -
真鍋 圭司, 杉村 延広, 岩田 一明1990 年 56 巻 9 号 p. 1729-1734
発行日: 1990/09/05
公開日: 2009/06/30
ジャーナル フリーThis paper deals with a rigid-plastic finite element method (FEM) of chip formation process in an orthogonal cutting of single crystal metals. Yield function of single crystal based on the Schmid's law is introduced in the rigid-plastic FEM by applying maximum plastic work principle. A new FEM model is proposed to analyze the chip formation process from the initial state to steady state on the basis of both crystal characteristics and cutting conditions. In the model, the elements of the workpiece are remeshed when the tool moves against the workpieces in order to simulate the chip separation during the cutting process. The FEM model proposed here is applied to the analysis of the micro cutting process of single crystal copper, and the results are compared with the experimental results. The results of FEM analysis, such as shapes of chips, shear angles and specific cutting forces, are in good agreement with the experimental results.抄録全体を表示PDF形式でダウンロード (2636K) -
渡邉 政嘉, 吉川 昌範1990 年 56 巻 9 号 p. 1735-1740
発行日: 1990/09/05
公開日: 2009/06/30
ジャーナル フリーマイクロ波プラズマCVD法によってダイヤモンドコーティング切削工具を試作し, 焼結アルミナセラミックスを切削加工した結果, 次のことがわかった.
マイクロ波プラズマCVD法でつくられたダイヤモンドコーティング切削工具は, アルミナセラミックスを切削しても膜の剥離が起こらず, 切削工具として十分使用可能である.
そして, 基体である焼結ダイヤモンドとしてはダイヤモンド結晶粒の大きなものがよく, また結晶性の優れたダイヤモンド膜の得られる合成条件でダイヤモンドコーティングした方が耐摩耗性に優れた切削工具になる.抄録全体を表示PDF形式でダウンロード (13411K) -
超精密旋削用油静圧式主軸に関する実験的解析横山 和宏, 速水 清, 一宮 亮一1990 年 56 巻 9 号 p. 1741-1746
発行日: 1990/09/05
公開日: 2009/06/30
ジャーナル フリーThis paper presents the flatness change of attracting surface of vacuum chuck based upon elastic and thermal deformations of the chuck and spindle. Increase in the centrifugal force causes a concave flatness change of the surface, for example approx. -0.2 μm. Probe traversing method is proposed to obtain the surface profile. Heat generated by the spindle rotation causes nearly uniform temperature increase of the chuck surface. However, thermal deformation causes a convex flatness change of the surface, for example approx. 2 μm, because the chuck is fastened at the outer portion with steel bolts of which thermal expansion coefficient is less than that of aluminum chuck.抄録全体を表示PDF形式でダウンロード (913K)
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