巻号一覧
58 巻, 12 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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鳴瀧 則彦1992 年 58 巻 12 号 p. 1949-1952
発行日: 1992/12/05
公開日: 2009/10/08
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中井 哲男1992 年 58 巻 12 号 p. 1953-1956
発行日: 1992/12/05
公開日: 2009/10/08
ジャーナル フリーPDF形式でダウンロード (1894K) -
久保 治明1992 年 58 巻 12 号 p. 1957-1960
発行日: 1992/12/05
公開日: 2009/10/08
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木曽 弘隆1992 年 58 巻 12 号 p. 1961-1964
発行日: 1992/12/05
公開日: 2009/10/08
ジャーナル フリーPDF形式でダウンロード (6547K) -
道津 毅, 渡辺 忠彦, 阪上 楠彦1992 年 58 巻 12 号 p. 1965-1968
発行日: 1992/12/05
公開日: 2009/10/08
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千徳 英一1992 年 58 巻 12 号 p. 1969-1972
発行日: 1992/12/05
公開日: 2009/10/08
ジャーナル フリー(1) マシナブルセラミックスの旋削用工具材質は, 高い熱伝導率のものが長寿命を示す.
(2) 切削3分力は, 切削速度を上げると, 鋼とは逆に切削抵抗が上昇する傾向を示す.また, 切削の進行に伴い他の分力に比べて背分力が著しく上昇し安定した切削が可能になる.
(3) 刃先のチャンファ角-15°のCBN工具は, 市販の-35°の工具に比べて初期摩耗が極めて小さく長い工具寿命となる.
(4) 横切れ刃の大きい円形工具は, 高切込みの切削を可能にする.抄録全体を表示PDF形式でダウンロード (4185K) -
中島 利勝1992 年 58 巻 12 号 p. 1973-1976
発行日: 1992/12/05
公開日: 2009/10/08
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石川 忠幸1992 年 58 巻 12 号 p. 1977-1980
発行日: 1992/12/05
公開日: 2010/01/27
ジャーナル フリー以上述べたとおり, 難削性の高い被削材であるほど超砥粒の持つ優れた特徴が基本的には生かされるはずである.しかし, 超砥粒にも多くの種類があり, これを適正に選択して使用する必要があると同時に, 砥粒を含むホイール全体の仕様も適正化して, 超砥粒を十分に活用することが重要である.本稿が読者の皆様のお役に.幾分かでも立てば幸三いである.抄録全体を表示PDF形式でダウンロード (3781K) -
横山 健三1992 年 58 巻 12 号 p. 1981-1984
発行日: 1992/12/05
公開日: 2010/01/27
ジャーナル フリーPDF形式でダウンロード (2018K) -
Ti-6Al-4V, インコネル718について熊谷 信男1992 年 58 巻 12 号 p. 1985-1988
発行日: 1992/12/05
公開日: 2009/10/08
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小島 昇, 藤井 石根1992 年 58 巻 12 号 p. 1989-1994
発行日: 1992/12/05
公開日: 2009/10/08
ジャーナル フリーThis paper describes a measurement system to measure fundamental characteristics under endothermic and exothermic reactions using calcium chloride (CaCl2) on chemical heat storage. In order to enable reversible chemical reaction, a measurement apparatus and method have been developed in this study. The apparatus consists of a reaction chamber and a steam chest. Measurands which become the target of the measurement are confined to temperature, vacuum pressure and mass. All measurands can be detected electrically by using a thermocouple, a differential pressure gage and a strain meter, and the automatic measurement by using a microcomputer is possible at real time. The pressure gage is independent of humidity in a measuring atmosphere. Furthermore, in mass measurement under vacuum conditions, the effect of fluctuations in temperature or pressure is removed by using the principle of parallel springs. Consequently, the measurement system is confirmed to be useful for measuring fundamental characteristics of chemical heat storage using CaCl2.抄録全体を表示PDF形式でダウンロード (907K) -
関 智男, 十合 晋一, 海野 邦彦, 小野寺 淳1992 年 58 巻 12 号 p. 1995-2000
発行日: 1992/12/05
公開日: 2009/10/08
ジャーナル フリー静圧気体軸受の剛性を向上する最も単純な手段は, 給気圧力を高くすることである.高圧給気による静圧スラスト気体軸受の高剛性化に引き続き, 本研究は, 実用上, より一層の高剛性化が求められている静圧ラジアル気体軸受について, 高圧給気による高剛性化とそれにかかわる疑問を解明した.さらに, 本研究の結果をもとに, 実用的な高精度高剛性スピンドルの設計を行った.本研究で得られた結果を列挙すると以下のとおりである.
(1) ラジアル軸受においても軸受剛性は, 理論値が示すとおり給気圧力に対し直線的に高くなる.
(2) 給気圧力を高くすると, ニューマティックハンマの発生領域は広くなるが, 高剛性軸受が対象とするようなすきまの狭い領域では全く安定である.
(3) 軸受流量は給気圧力が高くなると理論値が示すとおり増加するが, 軸受すきまが狭いので, 絶対量としてはそれほど多くならない.
(4) 高圧給気を用いて, 従来のスピンドルの軸受性能を大幅に上回る超精密加工用スピンドル製作の可能性を明らかにした.抄録全体を表示PDF形式でダウンロード (958K) -
三浦 憲二郎1992 年 58 巻 12 号 p. 2001-2006
発行日: 1992/12/05
公開日: 2009/10/08
ジャーナル フリーThis paper introduces a new type of free-form patches named rational boundary C2 Gregory patch. It can be said an extension of C2 Gregory patch developed by Miura and Wang, which gives users the capability of designing curvature-continuous surfaces (G2 continous surfaces) with reasonable flexibilities, and also that of rational boundary Gregory patch proposed by Chiyokura et al., which is surrounded by rational Bézier curves and can be interpolated with the continuity of tangent planes (G1 continuity). As the name of the patch implies, its boundary consists of rational Bézier curves. Its derivation is explained and methods for G2 continuity are proposed to connect it with a rational Bézier patch and with another RBC2G patch. Finally, a G2 continuous interpolation method based upon such patches is discussed.抄録全体を表示PDF形式でダウンロード (914K) -
牧野 英司, 野村 慶一, 柴田 隆行, 池田 正幸1992 年 58 巻 12 号 p. 2007-2012
発行日: 1992/12/05
公開日: 2009/10/08
ジャーナル フリーTransparent conducting films of SnO2 were formed on Si and glass substrates from SnCl4 and O2 at low temperatures ranging from 100 to 400°C by chemical vapor deposition (CVD). Effects of ultra-violet (UV) irradiation during CVD on the microstructure and the chemical composition of formed films and on deposition rates under various process parameters, such as deposition temperature and substrate material, were studied. The SnO2 films formed at low temperatures below 300°C and at higher temperatures had amorphous and tetragonal microstructures respectively, independent of UV irradiation. At high temperatures of 200°C or above, the film formation was mainly conducted by thermal decomposition of SnCl4, and almost no contribution of direct photodecomposition was observed. On the irradiated Si substrates, films could deposit even at low temperatures below 200°C, at which the thermal CVD rates were markedly low. This was interpreted in terms of the enhancement of an oxidation reaction by active oxygen atoms which were formed by a photocatalytic reaction of Si substrates.抄録全体を表示PDF形式でダウンロード (3751K) -
戸倉 和, 中山 卓, 吉川 昌範1992 年 58 巻 12 号 p. 2013-2018
発行日: 1992/12/05
公開日: 2009/10/08
ジャーナル フリーThis paper describes some cutting performances of diamond plated wire tools. 2 types of wire tools of 0.22mm in outer diameter with different diamond grain size have been used. They are 10μm grain and 35μm grain. Ceramic materials and silicone rubber are selected as difficult-to-machine materials. These wire tools are moved with reciprocating motion and their cutting performances are estimated by their accumulative cut area with the number of cycles. Also the changes of the tool and the grain are studied by SEM. Results obtained are as follows : it is hard to cut a silicon nitride ceramics comparing with alumina ceramics on account of the hard wear of the diamond grain; the cutting rate sensitively depends on the cutting load. Wire tool can cut silicone rubber as well as alumina ceramics.抄録全体を表示PDF形式でダウンロード (9058K) -
中村 晋哉, 垣野 義昭1992 年 58 巻 12 号 p. 2019-2024
発行日: 1992/12/05
公開日: 2009/10/08
ジャーナル フリーIn this report, the effect of temperature rise of spindle bearing on the function of spindle is studied in order to solve the problem of heat generation and thermal displacement when using motor integrated spindles. In the case of constant pressure preload, axial displacement, due to rotation is analyzed. In the case of fixed position preload, preload increment was analyzed. Both cases are analyzed experimentally and theoritically.抄録全体を表示PDF形式でダウンロード (869K) -
当舎 勝次, 飯田 喜介1992 年 58 巻 12 号 p. 2025-2030
発行日: 1992/12/05
公開日: 2009/10/08
ジャーナル フリーSeveral experiments were run to clarify the stock removal mechanism of grit blasting. Factors of the mechanism are treated on surface roughness, work-hardening, residual stress and weight of removed chip. Grit blasting was performed on commercially pure titanium (Ti : 99.4%) and carbon steel (C : 0.45%) by centrifugal blasting machine. Stock removal decreases with the increase of work-hardening and increases with the increase of the surface roughness. The mechanism of stock removal was mainly consisted of the work-hardened brittle layer. Stock removal is closely related with the machinability of the work material.抄録全体を表示PDF形式でダウンロード (933K) -
津川 大輔, 横内 弘宇1992 年 58 巻 12 号 p. 2031-2036
発行日: 1992/12/05
公開日: 2009/10/08
ジャーナル フリーThe paper describes flow behavior simulation of polymer melt in cavities of injection molds to clarify the relationship between flow behavior and mold shapes under several injection conditions. It uses FEM ; the governing equations are Stokes equation, equation of continuity and of heat conduction. Temperature in the flowing polymer melt in a mold varies spatially and temporally during injection molding process. The former is considered in finite partitioning of the unisothermal region by means of Tridiagonalized Partition Method (Zienkiewicz, 1967), the latter in the respective FEM analysis for flow and for heat repeated alternatively by the same time increment. In comparing the results of analysis with the experiment (Short-Shot Method), the analysis shows that the simulation is useful as a prediction of melt-front shape in the process and a generating position of weld-line, but quantitatively agrees not well with the experiment in the arrival time and temperature of melt-front, because of including no generating heat inside of flowing melt.抄録全体を表示PDF形式でダウンロード (1057K) -
金型自動磨き装置の試作・開発佐々木 哲夫, 三好 隆志, 斎藤 勝政, 岡田 信一郎1992 年 58 巻 12 号 p. 2037-2043
発行日: 1992/12/05
公開日: 2009/10/08
ジャーナル フリーThe purpose of this study is to develop and construct an automatic mold polishing apparatus, and verify the polishing performance for horizontal surface and multiple inclined surfaces. Up date, there are several kinds of automatic polishing apparatuses in the mold making world. However, since the behavior of these apparatuses are dependent upon their own mechanism, these polishing performances are inferior to that of expert of mold machinist. To acquire good performance of automatic polishing apparatus, this developed apparatus is designed according to the knowledge of expert of mold machinist. The two kinds of specimens, one is horizontal surface and the other is inclined, are polished experimentally by this developed apparatus, and it is verified that the performance of this developed apparatus are equal to expert's performance of mold machinist.抄録全体を表示PDF形式でダウンロード (2854K) -
適応予測の概念と工具欠損問題への適用松村 隆, 帯川 利之, 白樫 高洋, 臼井 英治1992 年 58 巻 12 号 p. 2044-2050
発行日: 1992/12/05
公開日: 2009/10/08
ジャーナル フリーAdaptive prediction approach is proposed for autonomous operation planning system, which can be installed on each machine tool. This approach enables us to predict machining troubles more accurately by adaptation of characteristics for analysis. This approach is applied to evaluation of tool failure in interrupted cutting. In adaptive process of tool failure, fracture probability distribution is modified by Johnson's ranking approach, which takes data of unbroken tools into account. Then fracture characteristics of tool are obtained by minimizing prediction error using conjugate direction method. In prediction process, tool failure is evaluated using updated characteristics obtained in adaptive process. Fracture characteristics finally obtained agree sufficiently with experimental result. In order to plan machining operation after adaptive prediction, neural network is constructed for rapid prediction of tool failure.抄録全体を表示PDF形式でダウンロード (1147K) -
帯川 利之, 笹原 弘之, 臼井 英治1992 年 58 巻 12 号 p. 2051-2056
発行日: 1992/12/05
公開日: 2009/10/08
ジャーナル フリーAlthough chip breaker controls chip flow effectively, how chip breaker changes cutting process and reduces chip curl radius is unpredictable quantitatively. Thus the steady state cutting by tools with chip breaker is calculated by finite element method. Namely chip formation, cutting force, temperature and stress distributions on the tool rake face, and chip curl radius, and their changes with the shape of chip breaker are obtained. When chip breaker is effective, large shear angle, small cutting force, low cutting temperature and small chip curl radius are realized in calculation as will be expected. The predicted change of chip curl radius with the shape of chip breaker sufficiently agrees with experimental results. Then the above finite element approach to chip breaker is applied to the crater wear of P20 carbide tools with chip breaker. Since wear equation of P20 tool has been obtained as a function of temperature and normal stress on the tool rake face, rate of crater wear is readily calculated. Reduction of wear rate by chip breaker in calculation is in good agreement with that in experiment.抄録全体を表示PDF形式でダウンロード (1120K) -
研削加工プロセスの知能的自動化に関する研究 (第2報)中島 利勝, 塚本 真也, 村上 大介, 倉田 勝弘, 安田 浩隆1992 年 58 巻 12 号 p. 2057-2062
発行日: 1992/12/05
公開日: 2009/10/08
ジャーナル フリーThe FIAC-II System (Fuzzy Intelligent & Automatic Control II System) is developed in this report to achieve the optimum fuzzy control of grinding processes. In FIAC-II system, the infeed rates are suitably controlled to keep the normal grinding force constant in roughing process and to make accuracy, efficiency and surface roughness better in finishing process by fuzzy inprocess control. Main conclusions obtained are as follows : (1) The ideal variation of infeed rates in one grinding cycle are established in such a way as the infeed rates should be kept high in early stage without over-shoot phenomena of grinding forces and be gradually decreased to the beginning point of spark-out. (2) The higher efficiency and higher accuracy are achieved by the optimum fuzzy control of several grinding cycles in which the variation of surface rough-ness and the wheel surface condition are controlled.抄録全体を表示PDF形式でダウンロード (1346K) -
毛利 尚武, 森田 浩充, 齋藤 長男1992 年 58 巻 12 号 p. 2063-2068
発行日: 1992/12/05
公開日: 2009/10/08
ジャーナル フリー積層型PZTを組み合わせることにより, 電極を直接駆動することの可能な新しいメカニズムの細穴用放電加工装置を試作した.本試作機により, 以下の性能を確認した.
(1) 加工装置主軸の慣性質量軽減により, 電極の応答が市販の細穴用放電加工機に比べて数十倍向上した.
(2) 貫通穴加工では, 通常穴抜け際で加工が不安定になり加工速度が減少するが, 本試作機によるステップ周波数5kHzの加工ではその現象がほとんど見られない.
(3) 電極駆動方式をステップ, アナログ複合によるハイブリッド方式とした場合は, ステップ定方式と比較して加工速度が速く穴抜け際の加工時間が短縮される.
(4) 本装置は, φ0.1～0.5mmの電極に対し, 実用上十分な加工速度が得られる.抄録全体を表示PDF形式でダウンロード (2818K) -
応答速度の検討唐 東雷, 章 恩耀, 野嶋 一宏, 安田 勝彦, 佐藤 海二, 下河辺 明, 赤羽 正大, 小田切 延之1992 年 58 巻 12 号 p. 2069-2074
発行日: 1992/12/05
公開日: 2009/10/08
ジャーナル フリーThe purpose of the study is to develop an optical non-contact displacement sensor which has the following characteristics; (1) direct measurement of rough surfaces, (2) high accuracy, (3) large measurement range, and (4) high follow-up speed. In the previous paper, a laser diode herterodyne interferometry sensor was introduced and its accuracy and measurement range were reported. This paper discusses the follow-up speed of the sensor. It is theoretically analyzed and experimentally proved that the following speed can be heightened by the increase of the modulation frequency and by the detection of a higher order harmonic component of the beat signal.抄録全体を表示PDF形式でダウンロード (921K) -
DD方式インデックステーブルのカム曲線制御古屋 信幸, 松原 正知1992 年 58 巻 12 号 p. 2075-2080
発行日: 1992/12/05
公開日: 2009/10/08
ジャーナル フリーIn servo motor control, it is important to select suitable acceleration and deceleration curve to improve dynamic characteristics. So many kinds of motion curves have been proposed. But it is not so easy to control the motor motion by such motion curves. In this report, a new algorithm in the software servo system to generate any motion curve is proposed. In conven-tional pulse train motor control system, it is relatively easy to control the motor by any motion curve, using DDA (Digital Differential Analyzer) method, but it can not be applyed to the software servo system directly, because the system is essentially different. The proposed new algorithm can produce any motion curve, based on the cam curve motion, and less deviation which is caused by numerical integral calculation. The algorithm is the same in the function as the DDA method in conventional pulse train motor control system. The algorithm is able to be applied to multi axes robot control, but in the first report, it is applied to the motion control of 1-axis DD (Direct Drive) Indexing table and some experimental results are reported.抄録全体を表示PDF形式でダウンロード (828K) -
静的特性吉本 成香, 阿武 芳朗, 温品 貴幸1992 年 58 巻 12 号 p. 2081-2086
発行日: 1992/12/05
公開日: 2009/10/08
ジャーナル フリーThis paper proposes a new type of aerostatic thrust bearing in order to achieve the maximum stiffness, about ten times as large as that of a conventional bearing. The proposed aerostatic bearing can operate in a bearing clearance of less than 1μm. In this bearing, the porous restrictor with 1-3 mm diameter is employed instead of a conventional feeding hole to restrict the air flow through the restrictor to a very small amount. Here, the static characteristics of the proposed bearing are investigated theoretically and experimentally. It is consequently shown that the proposed bearing is very useful for achieving a very high stiffness and miniaturizing the bearing.抄録全体を表示PDF形式でダウンロード (3112K) -
光リング式センサの特性三好 隆志, 青木 洋, 斎藤 勝政1992 年 58 巻 12 号 p. 2087-2092
発行日: 1992/12/05
公開日: 2009/10/08
ジャーナル フリーIn the previous report, the principle of the optical ring image sensor was analyzed by computer simulation by means of ray-tracing method. In this paper, the properties of the optical ring image sensor are experimentally measured and discussed not only for different surfaces, namely diffuse reflection surface, specular reflection surface and edge profile, but also for speckle noise which occurs in laser coherent. The results obtained are summerized as follows : (1) The radius of optical ring image is linearly proportional to the displacement of the target surface in optical axis. This result coincides with the theoretical analysis. (2) The speckle noise reduces by passing laser beam through a rotating diffuse glass plate. As a result, the measuring error reduces in steep inclined metal surface. (3) This sensor makes it possible to measure the displacement within an accuracy of ±50μm for inclined diffuse reflection surface up to ±80 degrees and also inclined specular reflection surface up to ±70 degrees by image processing of optical ring. (4) It is possible to measure the displacement in edges because the size of optical ring image is unaffected by edge profiles.抄録全体を表示PDF形式でダウンロード (4505K) -
森本 喜隆, 安井 武司, 中條 雅司1992 年 58 巻 12 号 p. 2093-2098
発行日: 1992/12/05
公開日: 2009/10/08
ジャーナル フリーThe dynamic characteristics of an NC Turret Punching Press has been evaluated by using the transfer function between the input command and the resultant carriage motion measured directly. The transfer function is decomposed into two units : one is control system, the other is mechanical one. Next, a new control method for the carriage motion has been developed by using the experimental transfer function. This method is based on the idea that an input-output relation between a control command and the resultant carriage motion can be described in a linearized form constructed by the transfer function measured at a representative position of a carriage. The control input which realizes a carriage motion to move with the desired trajectory and the rapid motion has been easily calculated by our method. The experimental results showed considerable surpression of the over shoot and the vibratory motion.抄録全体を表示PDF形式でダウンロード (955K) -
小島 宏行, 瀬崎 正博, 内藤 茂明, 神宮 宏和, 中里 岳夫1992 年 58 巻 12 号 p. 2099-2104
発行日: 1992/12/05
公開日: 2009/10/08
ジャーナル フリーThis paper describes the neuro-adaptive control system of the beam structure driven by a linear DC motor. Neuro-adaptive control system consists of a weight coefficient block and a two-layer neural network. The synapse of the neuron is renewed with the feedback error of the proportional control loop of the flexural displacement of the beam structure, so that the adaptive control action is executed. From the experimental results of the neuro-adaptive control, it is confirmed that the control error between the reference signal and the flexural displacement decreases rapidly, and the inverse system of the electromechanical system consisting of the beam structure and the linear DC motor is constructed in the neural network. Furthermore, the numerical simulation by use of the finite element modeling of the beam structure has been carried out, and the numerical simulation results agree well with the experimental results.抄録全体を表示PDF形式でダウンロード (918K) -
アルゴリズムの検討とシミュレーション塚田 忠夫, 于 大海, 橋本 裕之1992 年 58 巻 12 号 p. 2105-2110
発行日: 1992/12/05
公開日: 2009/10/08
ジャーナル フリーIt is demanded to measure the circulatities at many sections of a cylindrical part which is largely eccentric like a cam shaft. When a rotating table instrument is used for the measurement of circularity, the eccentric error of specimen should be removed as small as possible to ensure accuracy. In this paper, an algorithm is developed to get circularity from the data of eccentric cylinder by means of the iterative least-square method. In this study, the rotating type instrument is utilized by attaching the wide range digital probe. It is made clear that the main factor reducing the data accuracy is difference between the rotating table center and the sensing direction of digital probe.抄録全体を表示PDF形式でダウンロード (753K) -
下田 博一, 岡本 文明, 大亦 絢一郎1992 年 58 巻 12 号 p. 2111-2117
発行日: 1992/12/05
公開日: 2009/10/08
ジャーナル フリーThe authors propose a new type of semiactive damper to control a seismic response of a piping system. The damper is composed of a ball screw and a disk brake with piezoelectric actuators. The brake force is controlled corresponding to the seismic response of the piping or an input acceleration. The damper does not restrict the thermal expansion of the piping because its brake force does not work during a gradual movement. The seismic responses of an L-shaped piping supported with the semiactive damper are calculated using a continuous system simulation language. The restraint effects of the damper are also confirmed experimentally. The results may be summarized as follows : (1) The relative displacement response of the piping can be reduced successfully by the semiactive damper. (2) The semiactive damper has the effect of vibration suppression even by simple control methods such as on-off control and proportional control. (3) The resistance force of the semiactive damper is small compared to that of a mechanical snubber.抄録全体を表示PDF形式でダウンロード (1024K)
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