巻号一覧
後続誌
40 巻, 478 号
選択された号の論文の17件中1～17を表示しています
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瀬野 健治, 川野 玲次郎1974 年 40 巻 478 号 p. 919-925
発行日: 1974/11/05
公開日: 2009/06/30
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江見 千秋, 冨永 隆1974 年 40 巻 478 号 p. 926-930
発行日: 1974/11/05
公開日: 2009/06/30
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関口 健司, 飛田 浩美1974 年 40 巻 478 号 p. 931-937
発行日: 1974/11/05
公開日: 2009/06/30
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山川 博司, 羽生田 健二1974 年 40 巻 478 号 p. 938-944
発行日: 1974/11/05
公開日: 2009/06/30
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平岡 佑二1974 年 40 巻 478 号 p. 945-948
発行日: 1974/11/05
公開日: 2009/06/30
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湯本 良, 藤井 貞雄, 石神 秀利1974 年 40 巻 478 号 p. 949-955
発行日: 1974/11/05
公開日: 2009/06/30
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単純な機構の理論解析高野 政晴1974 年 40 巻 478 号 p. 956-962
発行日: 1974/11/05
公開日: 2009/06/30
ジャーナル フリーA method of analysis is shown of dynamical characteristics of the vibration system containing the mechanism with nonlinear transformation, of which the frequency characteristics are obtained and the linearized model expressing approximately this system is presented.
When the relation between the input and the output of mechanism is expressed as x2=Bx1+a sin Ax1, the vibration with frequency ω, which is the rotational velocity, is produced in both input and output axes. The resonance exists at the frequency which is the simple function of masses and spring. In this case, the harmonic resonances having sharp peaks also exist. When the relation is expressed as x2=a sin Ax1, the vibration with frequency 2ω exists in input axis, and the resonant frequency is the same as that of linear system of the output axis. These frequency characteristics are ascertained by the simulation using digital and hybrid computers.
The vibration system containing the mechanism with nonlinear transformation can be approximately expressed by the simple linearized model, of which the frequency characteristics, show good coincidence with that of nonlinear system. It facilitates the treatment of greater system, utilizing this linearized model.抄録全体を表示PDF形式でダウンロード (1137K) -
中川 三男, 大島 猛, 坂野 進1974 年 40 巻 478 号 p. 963-968
発行日: 1974/11/05
公開日: 2009/06/30
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渡辺 昭則1974 年 40 巻 478 号 p. 969-975
発行日: 1974/11/05
公開日: 2009/06/30
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磯部 光朗, 小沢 隆保1974 年 40 巻 478 号 p. 976-981
発行日: 1974/11/05
公開日: 2010/02/16
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福田 理一, 清水 伸二, 田中 常雄1974 年 40 巻 478 号 p. 982-987
発行日: 1974/11/05
公開日: 2009/06/30
ジャーナル フリーコラム中立軸が結合面に垂直な場合についてボルト結合部の静的挙動およびそれが荷重点変位に及ぼす影響について実験的考察と解析を試み,さらにこの裏付けのため,フランジ部を弾性床上のはりに近似して解析した結果次のことが明らかとなった.
(1) 結合部変形は,結合部彎曲変形と結合部横方向変形とからなり,前者はボルトの伸び,フランジ部の変形,フランジ部のベースへの沈み込みにより構成される.
(2) 荷重点変位の特性は結合部彎曲変形に大きく影響され,また結合部彎曲変形による変位x1は,結合面分離開始前でも,荷重点変位の約10%を占め,分離が進むにつれ30%にも達する.
(3) 結合部彎曲変形に対する最適締付間隔は,ボルトの剛性とフランジ部の剛性の相互関係により決定される.
(4) 結合部横方向変形に対する最適締付間隔は,結合面の圧力分布状態とフランジ部のベースへの沈み込みの相互関係によって決定される.
(5) フランジ部を断面形状がステップ状に変化する弾性床上のはりに近似することにより,結合面の分離が生じない範囲で結合部彎曲変形をほぼ解析できる.抄録全体を表示PDF形式でダウンロード (1042K) -
切りくずのテンパカラーの刃先温度の推定(第2報)藤村 善雄1974 年 40 巻 478 号 p. 988-994
発行日: 1974/11/05
公開日: 2009/06/30
ジャーナル フリーDecision is often made at the shops whether the cutting conditions were suitable or not by observing the temper color on the steel chips. For the purpose of theorizing this convenient method, this paper analyzes the cooling behavior and the thickness of the oxide film on the chips and presents a calculating nomograph showing the cutting temperature by the temper color on the continuous chips. Here, the temper color is represented numerically by the thickness Fe3O4 film using the result of the previous paper. First, using the theoretical solution of cooling of a square rod with infinite length and the result of model experiments, the cooling velocity of chip is given by the equation consisting of its cross section size, its flowing velocity, its curling form and others. Next, the thickness of the oxide film on the cooling chip is obtained by expanding the calculating method of the oxide film produced by the diffusion at a constant temperature to the nonsteady state. Beside, the relation between the mean chip temperature and the tool face temperature is derived theoretically and experimentally. Consequently, the cutting temperature is obtained from the temper color, the cutting condition, the chip form and its size. But, this paper deals with the situations of dry cutting of carbon steel (S15C) at relatively high speed (i.e. from 50 to 200 m/min for 0.5 mm deformed chip thickness).抄録全体を表示PDF形式でダウンロード (1150K) -
単粒引っかき加工に関する結晶学的研究(第2報)川辺 秀昭, 山田 朝治, 川上 隆司, 大塚 昭1974 年 40 巻 478 号 p. 995-999
発行日: 1974/11/05
公開日: 2009/06/30
ジャーナル フリーTo investigate the microstructure of work-deformed surface layer, high purity (001) single crystal surfaces of Al and Cu were scratched with diamond cones and dislocation structures under the scratch groove were observed through electron microscopes.
The results obtained are as follows:
(1) The dislocation structure inside of the groove is found to be composed of cell structures and the dislocation structure outside of the groove is similar to that found in the tensile deformation. These structures are slightly different for Al and Cu due probably to the difference in the stucking fault energy.
(2) It can be mentioned that the central part of the groove has suffered from the heavy deformation similar to that induced by cold-rolling or drawing, and thus cell structures are formed.
(3) As the cone angle of diamond stylus becomes smaller, the misorientation among neighboring cells becomes large and the deformed structure becomes polycrystalline.抄録全体を表示PDF形式でダウンロード (1653K) -
円弧基準方式砥石成形機構津田 展宏, 石川 二郎, 福田 康正1974 年 40 巻 478 号 p. 1000-1006
発行日: 1974/11/05
公開日: 2009/06/30
ジャーナル フリーThis paper proposes a dressing attachment forming a grind wheel along an involute curve by means of N.C. controllers, and the first method forming a grind wheel in the orthogonal coordinate system by means of two pulse motors, and the second one compensating the deviation from the circular arc and the tooth profile by the fine movement of the dressing attachment in the direction of the axis of the work gear, what you call "the dressing attachment based on the movement of the circular arc, " are compared and discussed. Using the former method, the mechanical errors of the dressing attachment almost become tooth profile's error. In the latter one, placing the dressing attachment so that the circular arc is approximated fairly well to the involute curve, the compensating mechanism doesn't need high accuracy. Further, using the diamond dresser, whose radius of roundness is less than 0.5 mm, the quantity interfering the grind wheel on account of the dresser's roundness is less than 1 μm, when the work gear is the standard spur gear, whose pressure angle is 20 degrees, and the number of teeth is more than 30. The dressing attachment based on the movement on the circular arc having some advantages is proposed and how to design this one is mentioned.抄録全体を表示PDF形式でダウンロード (1139K) -
松井 正己1974 年 40 巻 478 号 p. 1007-1011
発行日: 1974/11/05
公開日: 2009/06/30
ジャーナル フリーAn analytical consideration on the face grinding mechanism is made by statistical method. As the result, the theoretical equations for the rate of effective cutting edges and the distribution of grain depth of cut, grain cutting area and roughness of ground surface in the perpendicular section to grinding direction are obtained.
Furthermore, in order to estimate the influence of elastic displacement of grain cutting edges on them, Monte-Carlo simulation is performed. As the result, it is found that the existence of elastic displacement of grain cutting edges increases the number of effective cutting edges but has a little effect on the roughness of ground surface.抄録全体を表示PDF形式でダウンロード (937K) -
宮崎 俊行1974 年 40 巻 478 号 p. 1012-1017
発行日: 1974/11/05
公開日: 2009/06/30
ジャーナル フリーIt has been said that the high power density electron beam drilling is performed by the heating inside the target which is caused by the phenomenon that the high potential electrons penetrate into target. However, from the view-points of heat conduction theory and dynamic theory it has not been made clear. In this paper, the mechanism of high power density electron beam drilling of metals is discussed on the bases of heat conduction and force balance between vapour pressure and shrinking pressure due to surface tension. Namely, the critical temperature of generation of molten metal removal and the drilling speed are estimated. The estimated speed coincides with the experimental value. Moreover, the phenomenon of saturation of drilled depth is explained rationally.抄録全体を表示PDF形式でダウンロード (1085K) -
砥粒形状・結合材料とふん囲気の影響山本 明, 松森 昇1974 年 40 巻 478 号 p. 1018-1024
発行日: 1974/11/05
公開日: 2009/06/30
ジャーナル フリーWith the object of contribution to the security from bursting of the grinding wheels, bending strengths are investigated on the WA 60 vitrified sticks of some characteristic specifications in the ordinary and the static fatigue test under various basic grinding fluids. The sticks made of sharp shaped grains have smaller dispersion in the observed strength and fatigue life than the sticks made of round ones. This chiefly depends on the pore shape. The strengths and fatigue lives in various fluids decrease in the descending order of spindle oil or its compound oil with oleic acid, air, water, water solution of sodium nitrite and that of surfactants. These lowerings of strength and time to fracture might with great propriety be considered to result from attack of water molecules in the atmosphere to the tip of flaw under tensile stress as approved on the same phenomenon observed in alkaline silicate glasses. The strength of sticks used PbO type bonding material is more affected by water in a short time than that of Li2O type one, and differs about 20% at the both ends of the above fluid order. Generally, the fracture path runs without regard to bond or grain.抄録全体を表示PDF形式でダウンロード (1450K)
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