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49 巻, 5 号
選択された号の論文の12件中1～12を表示しています
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加藤 一郎, 吉川 弘之, 山口 勝弘, 端山 貢明, 尾崎 省太郎, 牧野 洋, 佐藤 武彦, 長谷川 幸男, 白井 克彦, 白井 良明1983 年 49 巻 5 号 p. 557-597
発行日: 1983/05/05
公開日: 2009/07/23
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佐竹 元一郎1983 年 49 巻 5 号 p. 598-603
発行日: 1983/05/05
公開日: 2009/07/23
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津田 和良1983 年 49 巻 5 号 p. 604-609
発行日: 1983/05/05
公開日: 2009/07/23
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高浜 逸郎, 藤田 昌大1983 年 49 巻 5 号 p. 610-616
発行日: 1983/05/05
公開日: 2009/07/23
ジャーナル フリーIt is analytically discussed in this paper whether the same mechanical system (composed of the same motors, springs and dampers), as was trially designed for normal level walking in the previous paper, can be applied to walking a slopeway and a stairway or not. Though the applicability has been confirmed by the analytical result, the result has shown that the motor at each joint in leg should be controlled in response to walking pattern, for example, time and duration of the driving which is repeated 3-5 times during a cycle of walking should be different between various walking patterns. When the mechanical system is applied to an artificial leg, though motors are necessary at every joint in leg for the normal walking motion, it is considered to be practical that motors had better be omitted from the mechanical systems at knee and ankle because motors are too heavy and it has been demonstrated in the analytical result that the walking motions at knee and ankle created with only springs and dampers can approach to the normal ones within the allowable range if not ascent walking.抄録全体を表示PDF形式でダウンロード (1206K) -
日高 照晃, 石田 武, 稲男 健1983 年 49 巻 5 号 p. 617-623
発行日: 1983/05/05
公開日: 2009/07/23
ジャーナル フリーAn internal gear with thin rim which meshes with three planet gears in a planetary gears is chosen as the subject to the study. The stresses in the internal gear with various rim thicknesses and numbers of teeth are analyzed by the finite element method, and the bending strength is considered. As the result of the study, the following are obtained. In the case of the thin rim, it is necessary to consider the stresses on the fillet of neighboring tooth in the direction of load to the loaded tooth and on the fillet at an angle of almost 30° in opposite direction of load from the loaded tooth as well as the stresses on the loaded tooth fillets. The thiner the rim, the lower the bending strength becomes as the fillet stresses become large and reversed stresses. Furthermore the larger the number of teeth, the lower the bending strength becomes in the case of the thick rim, but the smaller the number of teeth, the lower the bending strength becomes in the case of the thick rim.抄録全体を表示PDF形式でダウンロード (1294K) -
加藤 秀雄, 中野 嘉邦, 鴻巣 健治1983 年 49 巻 5 号 p. 624-629
発行日: 1983/05/05
公開日: 2009/07/23
ジャーナル フリーA clue to improvement of roundness of a cylindrical workpiece can be found by a quantitative analysis of its profile. The present paper describes a practical method in which a roundness profile curve recorded on a chart can be input to a microcomputer through a tablet digitizer and analyzed easily by applying Fourier analysis, correlation function and so on. Time for a profile input and input errors are investigated experimentally and the application scope of this method is discussed.抄録全体を表示PDF形式でダウンロード (1046K) -
静電容量形変位センサの特性塚田 忠夫, 金田 徹1983 年 49 巻 5 号 p. 630-635
発行日: 1983/05/05
公開日: 2009/07/23
ジャーナル フリーThe microirregularities on surface can be eliminated in axial direction of cylinder by using a noncontact electro-static-capacitance sensor for cylindrical form measurements. This research examined such the characteristics of this sensor as the surface roughness to be eliminated, the relation between the original surface profile and the measured one, the limits of specimen diameter to be measured correctly and the effect of the sensor attitude. Finally an available condition and the usefulness of this sensor were proposed.抄録全体を表示PDF形式でダウンロード (992K) -
実験竹内 生公, 金田 彰夫1983 年 49 巻 5 号 p. 636-641
発行日: 1983/05/05
公開日: 2009/07/23
ジャーナル フリーIn this paper, both structural and internal damping values are estimated, and relation between them and the generation of self-excited vibration are described. In these experiments, a rotating shaft system with one rotor at the middle of axis was used. Every test rotor is horizontally supported between two ball bearings. Small damped vibration was generated by impressing an impact on the test rotor for the conditions of non-rotating, rotating at various speed, and especially at critical speed. From the impulsive response wave form obtained, the structural damping 'Fi' and internal damping 'Ci' could be estimated. The main results obtained are as follows : (1) The larger the structural damping of the rotating shaft system is, the estimated value of internal damping become larger, so that self-excited vibration is apt to be generated. (2) Self-excited vibration can be prevented, if the ratio of structural damping is less than about 10. (3) If the ratio of internal damping and external damping is made less than 0.41, the selfexcited vibration can be prevented.抄録全体を表示PDF形式でダウンロード (1131K) -
刃先形状の動的成分に及ぼす影響頼 光哲, 斉藤 義夫, 伊東 誼1983 年 49 巻 5 号 p. 642-648
発行日: 1983/05/05
公開日: 2009/07/23
ジャーナル フリーIn steady cutting condition, the cutting force consists of static and dynamic components. The dynamic component is considered to be available for identifying the cutting process, because it is in close relation to the process of chip formation. In order to investigate this relation in detail, in this report, the cutting force in turning of workpiece made of steel was investigated, when varying the tool geometry, which may have considerable effects on the chip formation. The frequency analysis of the dynamic component was also carried out. Through the experiments, the effects of tool geometry on the dynamic component, the proportion of each frequency component, the relationships between the dynamic component and the finished surface roughness and so on were investigated. As a result, the following conclusions can be drawn. (1) The amplitude and frequency of the dynamic component of cutting force are affected greatly by the tool geometry. (2) The dynamic component of cutting force consists of those derived from the chip formation process and natural frequency component of the tool system. (3) The dynamic component of cutting force has considerable effects on the finished surface roughness and also on the limiting depth of cut.抄録全体を表示PDF形式でダウンロード (1754K) -
超硬合金の衝撃劣化過程と劣化状態の等価的換算について白樫 高洋, 金沢 憲一, 井原 透, 臼井 英治1983 年 49 巻 5 号 p. 649-654
発行日: 1983/05/05
公開日: 2009/07/23
ジャーナル フリーUsing the impact loading machine reported before, the deterioration process of sintered carbide material is discussed quantitatively under cyclic impact loads at room temperature. The main results obtained are as follows : (1) When the uniaxial cyclic compressive load is applied on the sintered carbide material, the compressive fracture stress does decrease not only in the loading direction but also in the transverse one, and the tensile fracture stress also decreases. (2) Many small cracks or voids with random sizes and directions around WC particles in the sintered carbide material are generated after cyclic uniaxial impact compressive or tensile loading. (3) Both the features of structure and fracture stress indicate that the deterioration of material is isotropical and there is no difference in the process except the deterioration rate between impact tensile and compressive loadings. (4) The hypothesis for quantitative estimation of the equivalent tensile stress to generate the same deterioration state under multiaxial stressing is proposed and verified through impact uniaxial compressive and tensile deterioration experiments.抄録全体を表示PDF形式でダウンロード (1517K) -
渡辺 純二, 鈴木 淳平, 大平 文和1983 年 49 巻 5 号 p. 655-660
発行日: 1983/05/05
公開日: 2010/01/20
ジャーナル フリーIn order to obtain a high precision and damage free semiconductor Si wafer used for large scale integrated circuits, a new polishing machine was developed. Using this machine, the wafers never come into contact with the polishing pad but are supported by the liquid. The polishing pad has several taper-flat radial divisions like a hydrodynamic thrust bearing. Rotating this pad in the liquid, the wafers with flat surfaces float to the pad through hydrodynamic effect. Powder particles in the liquid polish the wafer surface little by little. Special merits in this polishing method are as follow. The work surface is not affected by large particles in polishing reagent, and polisher wear or deformation does not happen, so a high precision and damage free surface can be obtained reproducibly. The polished Si wafer using this machine has 1 μm/3'' in flatness, 10 Å surface roughness and one order less defect than that of a conventionally polished wafer. The Schottky-barrier diode formed on this polished wafer has no leakage in reverse current.抄録全体を表示PDF形式でダウンロード (1264K) -
固体指数ホーンのスクリュー振動の解析財満 鎮雄, 宇野 正美, 加茂 進1983 年 49 巻 5 号 p. 661-666
発行日: 1983/05/05
公開日: 2009/07/23
ジャーナル フリーThe analysis of the exponential solid horn vibrating in the ultrasonic screw mode which can be utilized in machining, is described. The screw vibration can be produced by synthesizing longitudinal and torsional vibration. For an exponential horn to vibrate in screw mode, the horn must be shaped in specified dimensions, which is given by our calculation. The dimensions are determined by the taper constant of the horn, which is a function of the ratio of the resonance order of the torsional vibration to that of the longitudinal vibration. The results of the measurement with the horn designed according to the theory well supported the theory. The principal characteristics of the above horn are as follows : (1) The velocity of screw vibration distributes from large end to small end of the horn so that the direction of the velocity changes from half right, vertical, half left, horizontal and again half right in order, and the amplitude of the velocity gradually increases. (2) The nodal point do not exist in the distribution of the screw vibration. This seems to introduce troublesome problem in fixing the horn. The problem can practically be proved by binding the position of the smallest velocity amplitude near the large end of the horn with sponges, affecting little the vibration of the horn.抄録全体を表示PDF形式でダウンロード (1008K)
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