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41 巻, 491 号
選択された号の論文の9件中1～9を表示しています
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佐藤 有司, 垂水 賢吉1975 年 41 巻 491 号 p. 1112-1116
発行日: 1975/12/05
公開日: 2009/06/30
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藤本 定正1975 年 41 巻 491 号 p. 1117-1121
発行日: 1975/12/05
公開日: 2009/06/30
ジャーナル フリーThe iridescent unevenness of a precisely turned surface is investigated by a ray-tracing procedure with reference to the pitch unevenness of turned grooves. The surface is illuminated at an oblique angle with a linear light source which is crossed at right angles to the cylindrical axis of the surface, and the image of the light source focussed by the surface is observed in the direction of diffraction. The image is smooth parabolic when no pitch unevenness is present on the surface. The image calculated on the assumption of sinusoidal pitch unevenness arises disturbance of the image corresponding to the change of pitch. When the surface is illuminated with a white light source, this disturbance turns into iridescent unevenness. A surface having sinusoidal unevenness of pitch is worked by a lathe provided with a periodically variable feed device connected to the tool slide, and the theoretical result is confirmed. The pitch unevenness tolerable in the existence of iridescent unevenness differs depending to the intensity of iridescence on the surface.抄録全体を表示PDF形式でダウンロード (1093K) -
花岡 忠昭, 坂宮 一彦, 郷 茂博1975 年 41 巻 491 号 p. 1122-1127
発行日: 1975/12/05
公開日: 2009/06/30
ジャーナル フリーIn belt grinding rubber contact wheels are usually used, by which many kinds of works are come to be possible in better grinding. But on the other hand, the use of the rubber contact wheel makes one of causes of decline of form accuracy on ground works. Therefor, in this paper, analysis of the corner slope of the work is tried on the base of the elastic deformation of the contact wheel. And a formula that expresses the relation between the depth of corner slope at the edge and the setting depth of cut is obtained through the analysis, and the depth of corner slope at the edge may be calculated by substituting into the formula the values of grinding condition before the grinding. Then, with the results of the analysis of the depth of cut at the edge of entrance side, the optimum distribution of the depth of cut on each of head of the surface belt grinder with multi-heads was decided. Its results are shown following:
(1) The depth of cut should be increased at the first step of the two grinding heads with decreasing the table speed and increasing the hardness of the contact wheel if the grinding conditions are same on each grinding head without the grinding allowance.
(2) When more heads than two are used, the ratio of the depth of cut on two heads next to each other should be set the same value as when two heads.抄録全体を表示PDF形式でダウンロード (942K) -
スルファミン酸ニッケル液の流動電解液中におけるニッケル電鋳加工山本 正興, 佐藤 敏一1975 年 41 巻 491 号 p. 1128-1133
発行日: 1975/12/05
公開日: 2009/06/30
ジャーナル フリーThe purpose of this paper is to investigate the possibility of high speed electroforming of nickel at high current density with the flowing electrolyte method of nickel sulfamate solution. Internal stress, hardness and structure of electroformed nickel are determined, and the effects of temperature and flow speed of electrolyte are discussed. The results obtained are as follows:
(1) High speed electroforming of nickel is possible with the flowing electrolyte method of nickel sulfamate solution, and the electroforming rate is almost the same as the rate of Watt's solution.
(2) Internal stress of electroformed nickel from nickel sulfamate solution is in the low state in comparison with that from Watt's solution. Compressive stresses are often observed under some conditions of electroforming. As electrolyte temperature increases, internal stress decreases. Internal stress is affected a little by flow speed of electrolyte.
(3) Low internal stress, in the range of ±5 kg/mm2 (+ means tensile state, - means compressive state), is observed under the condition that electrolyte temperature is 60°C, flow speed of electrolyte is from 0.8 m/s to 5.4 m/s, current density is from 60 A/dm2 to 120 A/dm2.抄録全体を表示PDF形式でダウンロード (1287K) -
東本 暁美, 吉村 允孝, 阪上 雅昭, 浦川 和夫, 松島 律1975 年 41 巻 491 号 p. 1134-1140
発行日: 1975/12/05
公開日: 2009/06/30
ジャーナル フリーA new method is presented to measure damping capacity and also stiffness of a machine-tool guide way associated with the vibration in the direction of the guide. The method utilizes a spring element in the driving system as a force detecting member so that the dynamic characteristics of the other driving elements and the prime-mover do not affect the measure-ment. The usefulness of the method is examined theoretically and experimentally. A series of dynamic characteristics measurement were taken for each of the combination of mild steel, fluoric resin-cast iron slide ways and also the hydrostatic guide way. The result shows that the stiffness added to the system by the existence of the guide ways are nearly constant for the range of feedrate from 0 to 4000 mm/min. The damping capacity of hydrostatic guide way indicates constant and relatively low value for the above mentioned range of feedrate. In the case of sliding guide ways, on the other hand, the damping capacity is found to be relatively high and also dependent on the oscillating velocity of the table and the feedrate of the drive. The variation of the damping coefficient of these guide ways are hardly estimated from the variation of the steady state frictional force versus sliding velocity.抄録全体を表示PDF形式でダウンロード (1294K) -
臼井 英治, 白樫 高洋, 北川 武揚1975 年 41 巻 491 号 p. 1141-1146
発行日: 1975/12/05
公開日: 2009/06/30
ジャーナル フリーThe paper proposes an analytical method which enables to predict the temperature distribution in three dimensional metal cutting with single point tool, based only upon orthogonal cutting data. By using the three dimensional cutting model and the energy method presented in the previous paper, it is possible to obtain cutting force and chip formation such as chip flow direction, shear angle and chip shape for the tool of arbitrary shape. An assumption made on the frictional stress distribution on rake face together with the results through the energy method determines the strength of heat sources in the cutting model. The temperature distribution in workpiece, chip and tool is thus obtained through a numerical analysis of the equation involving heat conduction, transfer and generation. The predicted distribution of the temperature on rake face is found to be in good agreement with the distribution measured with a fine, insulated platinum wire embedded in the tool, of which end is exposed on the rake face and makes a thermo-couple with the chip produced.抄録全体を表示PDF形式でダウンロード (1116K) -
前田 純一郎, 百瀬 勝久, 佐田 登志夫1975 年 41 巻 491 号 p. 1147-1149
発行日: 1975/12/05
公開日: 2009/06/30
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各種既設研削盤の鉄鋼重研削能力に関する調査・研究1975 年 41 巻 491 号 p. 1150-1156
発行日: 1975/12/05
公開日: 2009/06/30
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飯塚 幸三1975 年 41 巻 491 号 p. 1164-1165
発行日: 1975/12/05
公開日: 2009/06/30
ジャーナル フリーPDF形式でダウンロード (407K)
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