巻号一覧
後続誌
33 巻, 385 号
選択された号の論文の11件中1～11を表示しています
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塑性変形のモードとすべり線場,ホドグラフの変化について臼井 英治, 菊地 千之, 北川 武揚1967 年 33 巻 385 号 p. 77-85
発行日: 1967/02/05
公開日: 2009/06/30
ジャーナル フリーThe visioplasticity technique which was presented in a concrete form in the previous paper is applied to the analysis of discontinuous and continuous chip formations.
The plastic deformation at the initial stage of discontinuous chip formation is essentially E.H. Lee's type pseudo-steady plastic flow although the flow does not last so long as to show any practical importance.
Variation of plastic deformation, slip line field and its hodograph with cutting time during a cycle of producing discontinuous chip segment are obtained with the aid of grid lines engraved on a side of the workpiece. The plastic flow, slip line field and its hodograph for continuous chip formation are also obtained using the same technique and compared with the results for discontinuous chip formation. The comparison shows a great resemblance in slip line field and hodograph as well for the both types of chip formation although the grid line deformations are entirely different. This means that instantaneous properties of the each plastic field are es sentially the same, and transition between the two types of chip formation appears to be quite smooth.
Under a very high friction condition on tool-face, built-up edge is sometimes formed from half-way of discontinuous chip formation. The possibility of the formation is discussed with the properties of slip line, and hodograph.抄録全体を表示PDF形式でダウンロード (9906K) -
砥粒切削軌跡の交差角と砥粒切込み深さについて田中 行雄, 熊谷 信男1967 年 33 巻 385 号 p. 86-94
発行日: 1967/02/05
公開日: 2010/02/16
ジャーナル フリーカップ形砥石により円筒研削を行なう場合の概要を述べ,切削軌跡の交差角,砥粒切込み深さ,切りくず長さなどを幾何学的にみちびき,これに関する2,3の実験を行なった。それらをまとめるとつぎの通りである。
(1) 仕上面の砥粒切削軌跡の交差角は,中心変位角αによる影響が大で,中心変位量が砥石内半径を越えない範囲内では αが増加すると交差角が減少する。さらに交差角は砥石周速度が増加すると 180° -2α°に近づき,被加工物周速度が増加して送り速度が減少すると大となる。 また,直径が小で幅の広い砥石を使用し,中心変位角を増加するほど,交差角の範囲は広くなり多方向切削が行なわれる。
(2) 本加工法によれば,平形砥石による場合よりも切りくず長さが長く,砥粒切込み深さは小さくなる。また,切りくず長さは中心変位角を増加すると長くなる。
(3) 本加工法は砥石の2箇所で互いに向きの異なる研削を同時に行ない,研削条件を変えると1個の砥石によって種々な角度の交差切削や多方向切削および砥石接触幅の異なる研削を容易に行なうことができる。抄録全体を表示PDF形式でダウンロード (10852K) -
試作した長周期ねじり振動計について西村 源六郎, 神保 泰雄, 高野 政晴1967 年 33 巻 385 号 p. 95-102
発行日: 1967/02/05
公開日: 2010/02/16
ジャーナル フリーIn the last report, the authors found the fact that, solid friction existing in machine parts is diminished by applying the high frequency vibration to them and becomes equivalent to fluid friction.
In this report, the authors produced the long period torsional vibrometer of small size applied by this effect and buoyancy of liquid and observed the following facts;
When the displacement amplitude of high frequency vibration is small, the frictional surface cannot completely slip, and are elastically deformed, and moreover this elastic deformation acts as a spring to shorten the natural period of a pendulum system. This amplitude of high frequency vibration to make the frictional surface completely slip must become large according as the vertical load becomes large. Therefore, from the practical point of view of stability of the vibration system, it is desirable that the vertical load is made as small as possible by adopting a buoyancy method, and the friction due to the residual load is diminished by high frequency vibration.
Applying these effects, the authors obtained a torsional vibrometer with 100g weight pendulum and 13sec. natural period and with the sensibility of 10-4rad/mm.抄録全体を表示PDF形式でダウンロード (2947K) -
研削砥石の目つまりの研究(IV)重松 日出見1967 年 33 巻 385 号 p. 103-110
発行日: 1967/02/05
公開日: 2009/06/30
ジャーナル フリーExperimental studies are carried out on the relation between the grinding wheels and the quantities of loading, and on the relation between the work materials and the conditions of loading.
It is concluded that the quantities and conditions of loading on the worked wheel surface change considerably by the kind of abrasive material, grain size, grade and structure of grinding wheel, and work material.抄録全体を表示PDF形式でダウンロード (6804K) -
偽唸について柳沢 猛, 中村 喜十郎1967 年 33 巻 385 号 p. 111-116
発行日: 1967/02/05
公開日: 2009/06/30
ジャーナル フリーUp to the present, it is believed that beats of one string of piano are false beats (defined by W.B.White) caused by inharmonicity. This paper discusses particularly the relationship between false beats and inharmonicity for a certain piano.
It is shown from the experimental results that the beats of one string of a piano consist of false and true beats. The ratio of false to true beats is small, and it is 2/11 in this experiments. The false beats of a string do not exist in the soprano part, and the beats in the soprano part are the true beats. Deformation of a support of string decreases the false beat-rate.抄録全体を表示PDF形式でダウンロード (7509K) -
加工速度に及ぼす加工液の影響筒井 忠夫1967 年 33 巻 385 号 p. 117-123
発行日: 1967/02/05
公開日: 2009/06/30
ジャーナル フリーThe dielectric fluid is necessary for generating pulse discharges and the machining efficiency depends on the appropriate selection of this fluid. So the stock removal rate of tungsten carbide (work piece) is studied experimentally with various fluids, and the results are as follows.
(1) The stock removal rate increases as the density of the fluid becomes larger, and decreases when the temperature of the fluid increaes.
(2) The removal rate is improved by mixing about 10 per cent of carbon tetrachloride (C Cl4) in transformer oil, but adding ethyl alcohol or toluene is not effective.
(3) Intermittent firing of the fluid in a spark gap does not practically impair the efficiency of machining under various electrical conditions.
(4) Chips produced from both tungsten carbide and cast iron wheel electrode are found in the shape of small spheres in the fluid.抄録全体を表示PDF形式でダウンロード (4041K) -
奈良 治郎1967 年 33 巻 385 号 p. 124-130
発行日: 1967/02/05
公開日: 2010/02/16
ジャーナル フリーPDF形式でダウンロード (1411K) -
石橋 彰1967 年 33 巻 385 号 p. 131-132
発行日: 1967/02/05
公開日: 2009/06/30
ジャーナル フリーPDF形式でダウンロード (566K) -
石田 健二郎1967 年 33 巻 385 号 p. 133
発行日: 1967/02/05
公開日: 2009/06/30
ジャーナル フリーPDF形式でダウンロード (214K) -
遠峰 律1967 年 33 巻 385 号 p. 134-138
発行日: 1967/02/05
公開日: 2009/06/30
ジャーナル フリーPDF形式でダウンロード (6176K) -
黒田 秀郎, 柿沢 重喜, 佐藤 範夫, 山田 斉士, 川原 杲1967 年 33 巻 385 号 p. 139-147
発行日: 1967/02/05
公開日: 2009/06/30
ジャーナル フリーPDF形式でダウンロード (6518K)
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