巻号一覧
後続誌
23 巻, 269 号
選択された号の論文の8件中1～8を表示しています
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太田 信之1957 年 23 巻 269 号 p. 299-304
発行日: 1957/07/05
公開日: 2009/06/30
ジャーナル フリーダイカストは約40年前に我国に紹介されたが, その技術のむずかしいためと, 我国で機械部品の大量生産を必要とする場合の少かつたために, その割に発展しなかつた。然し我国の工業の拡大に伴い, 機械部品の大量生産の必要に迫られ, 最近ダイカストは非常な発展を遂げつつある。即ち昭和27年にダイカストの生産高は2,511トンであつたが, 昭和31年には10,458トンをなつて, 僅か5年閥に生産高は4倍に急増した。我国のダイカスト工業は最近非常な進歩を遂げ, 安定した大工業に発展しつつある。我国にダイカスト工場は約200あつて, 従来ダイカスト業1舌は大体中小企業者に限られていたが, 最近大誌業で自家の機械部品を製作するために, ダイカスト工場を持つ傾向を見るようになつたことは注目すべきである。抄録全体を表示PDF形式でダウンロード (1347K) -
田中 行雄1957 年 23 巻 269 号 p. 305-308
発行日: 1957/07/05
公開日: 2009/06/30
ジャーナル フリーThe grease-base buffing compound or composition in bar form for producing a color finish is composed of the finest abrasive grains in a binder composed of stearic acid, tallow and resin etc.
The last paper was a report on the study of commercial experiment by using the composite compound, and it was difficult to analyse the buffing mechanism in detail.
The present paper deals with the study of the influences of elements of a buffing compound.
All the observations that have been made can be explained as such that the buffing efficiency was influenced exceedingly by the charactor of stearic acid or grease.抄録全体を表示PDF形式でダウンロード (554K) -
仕上面粗さ (II)越智 隆冬1957 年 23 巻 269 号 p. 308-311
発行日: 1957/07/05
公開日: 2009/06/30
ジャーナル フリーIn the first report theoretical and experimental analyses for roughness of ground surface are shown.
In this report the relations of theoretical roughness H to measured value Hmax are discribed and it is tried to decide the numerical values of factors relating to the grinding conditions, work materials or characteristics of wheel.
As there are many conditions influencing on the grinding action, measured data on Hmax are distributed in extensive bounds. But they can be arranged simply by adopting a dimensionless factor hmax (=Hmax/T, provisionally named Relative Roughness), and thus they lie in the region of 0 to 1 theoretically : actually there are measured values of more than 1. It is proved that these analyses on the roughness of ground surface are practically reliable and that the values of e must be investigated still more as the function of NB/S and T.抄録全体を表示PDF形式でダウンロード (791K) -
大越 諄, 飯田 喜介1957 年 23 巻 269 号 p. 312-315
発行日: 1957/07/05
公開日: 2009/06/30
ジャーナル フリーIn order to obtain the relations between the indentations and the conditions of impact as the basis for shot peening, flat piece of steel was clamped to a large solid block and shot by hard steel ball.
The result obtained is expressed by equations (1) (5) in the paper with the following nomenclature : d, h, V=chordal diameter, depth and volume of indentation, D, v=diameter and velocity of steel ball, kd, kh, kv =material constant.
Force of impact is connected to the equivalent static pressure (P) from the chordal diameter of indentations penetrated by the method above mentioned and static loading by the Vickers hardness testisting machine.抄録全体を表示PDF形式でダウンロード (529K) -
大島 康次郎1957 年 23 巻 269 号 p. 315-323
発行日: 1957/07/05
公開日: 2010/02/16
ジャーナル フリーIn the preceding report, the author tried the theoretical analysis concerning the influence of the strain at the outer fixed point of the hairspring and found the coincidence with the experimental results. However, the variation of the oscillation period derived from the same theoretical basis differed from the experimental results to some extent.
In order to make the source of this difference clear, he measured the displacements of the outer terminal of the hairspring model supported as the free end spring and compared with the theoretical Values.
He also measured the reaction forces at the fixed outer terminal of the hairspring model. The results of measurement and considerations of them are described in this report.抄録全体を表示PDF形式でダウンロード (1270K) -
篠原 茂之1957 年 23 巻 269 号 p. 324-326
発行日: 1957/07/05
公開日: 2009/06/30
ジャーナル フリーIn electric-discharge cutting of carbon, author has obtained a few results as follows;
(1) For the electric-discharge cutting of carbon, water is better than water-glass as the working fluid.
(2) In electric-discharge cutting in water, the feed of the work should be done not by contact pressure method but by automatic feed method, which enables to maintain the discharge gap constant.
(3) There is no difference of the electric-discharge cutting speed between graphite and amolphous carbon.
(4) By a suitable method of automatic feed, the cutting speed of carbon by electric-discharge cutting will be pretty larger than that previously considered. Its practical use is of great promise.抄録全体を表示PDF形式でダウンロード (585K) -
味岡 成康1957 年 23 巻 269 号 p. 327-331
発行日: 1957/07/05
公開日: 2009/06/30
ジャーナル フリーPDF形式でダウンロード (943K) -
1957 年 23 巻 269 号 p. 337-338
発行日: 1957/07/05
公開日: 2009/06/30
ジャーナル フリーPDF形式でダウンロード (408K)
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