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30 巻, 211 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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小野 浩二1964 年 30 巻 211 号 p. 361-368
発行日: 1964/03/25
公開日: 2008/03/28
ジャーナル フリーThe mechanism of generation of ground surface roughness is discussed analytically, when the grit profile curve and the grit distribution of the grinding wheel are generally given by arbitrary contineous functions. And the theoretical formulas of some characteristics of ground surface-maximum valley height of surface roughness, height distribution of scratches, mean width of scratch and ultimate roughness, which is obtained, when, for example, the work speed is zero-are introduced. Then, if the functions of grit profile and distribution are both represented by a power function, these formulas are able to be calculated easily. From the result, the influences of grit profile and grit distribution on the ground surface are clarified.抄録全体を表示PDF形式でダウンロード (919K) -
塩崎 進, 中野 嘉邦, 福田 理一1964 年 30 巻 211 号 p. 368-379
発行日: 1964/03/25
公開日: 2008/03/28
ジャーナル フリーIn precision grinding, the profile errors with various forms and magnitudes are brought about by complicated causes. The elastic deformation caused by the grinding forces shifts the relative position between the grinding wheel and the workpiece, and consequently the depth of cut cannot coincide with the advance of the wheelhead. Then, the workpiece will have erroneous profile, otherwise the productivity will be lowered by long spark-out time. In this paper, the generating mechanism of profile errors due to the elastic deformation was analytically investigated in order to obtain the basic data for the improvement of grinding accuracy. And it was theoretically proved that the elastic character of machine, the ability of grinding wheel, the grinding conditions and the accuracy of preceding roughing operations had important effects upon the profile errors. It is shown that the results of the experiments agree approximately with the analysis.抄録全体を表示PDF形式でダウンロード (1796K) -
荻野 修作1964 年 30 巻 211 号 p. 379-384
発行日: 1964/03/25
公開日: 2008/03/28
ジャーナル フリーProf.Tanimura already published a theory on the meshing of skew gears in 1939, and his work may be regarded as a classic in the theory on gears. He gave a formula of the relative curvature of the toothed surface at the meshing pcint and using the formula, he discussed the problem on the interference point of the toothed surface. But his formula is not applicable to the point where the specific sliding is equal to zero, so his discussion becomes comp1ex in some degree. In this paper a formula of the relative curvature of the toothed surface is given in a most general form which is applicable to the meshing point where the specific sliding is equal to zero, and the problem on the interference point of the toothed surface is solved briefly.抄録全体を表示PDF形式でダウンロード (710K) -
荻野 修作1964 年 30 巻 211 号 p. 384-395
発行日: 1964/03/25
公開日: 2008/03/28
ジャーナル フリーIn this paper we study the skew gear whose specific sliding is equal to zero. At first the loci of the contact lines are determined in a most general form. Next, aiming at the practical use, such a special case where the contact line is an ordinary helix whose axis is the instantaneous axis is discussed. It is shown that such a gear is a three dimensional extension of the rolling contact gear by Prof. Ishida. The formula of the relative curvature at the meshing point is also given.抄録全体を表示PDF形式でダウンロード (2215K) -
金子 孝治郎, 大内田 久1964 年 30 巻 211 号 p. 388-395
発行日: 1964/03/25
公開日: 2008/03/28
ジャーナル フリーOn the pitting of power transmitting gears, though many studies were made and much of its cause were revealed, and yet many questions seem to be left still unanswered. In this paper, the authors examined the pitting of helical gears, made of Cr-Mo steel with comparatively large module, by employing a gear endurande testing machine of power circulating type. Thus various characteristics of gears, such as pitting, crack, work hardening and plastic flow have been clarified.抄録全体を表示PDF形式でダウンロード (1903K) -
小川 潔1964 年 30 巻 211 号 p. 396-404
発行日: 1964/03/25
公開日: 2008/03/28
ジャーナル フリーThe present author previously published his researches on the synthesis of six-bar linkage in which new precise methods of the numerical calculation and vector diagramatic solution were introduced. In this paper, however, new methcds of the numerical calculation and vector diagramatic solution of Type C combination of linkage have been described with the aid of a digital computer.抄録全体を表示PDF形式でダウンロード (796K) -
山内 高調, 小川 潔1964 年 30 巻 211 号 p. 404-412
発行日: 1964/03/25
公開日: 2008/03/28
ジャーナル フリーThe authors proposed previously the method for determining the accelerations and second accelerations in a plane linkage mechanism with one degree of freedom. Because each of the oscillating slide block mechanism and the revolving slide block mechanism has sliding motion on the surface of a body that revolves, the sliding velocity and sliding acceleration are involved in the equation of the second accelerations in these mechanisms. This holds good also in the special case where part of the contour of a plane cam is straight. The authors have derived the fundamental formula for determining the second accelerations in the case where a slider slides on a body that revolves at an angular acceleration by means of vector analysis, and apply it to the above-mentioned mechanisms. The second accelerations in these mechanisms are obtained simply as well as accurately by the graphical method.抄録全体を表示PDF形式でダウンロード (820K) -
小笠原 武夫1964 年 30 巻 211 号 p. 413-420
発行日: 1964/03/25
公開日: 2008/03/28
ジャーナル フリーTo establish a theory regarding the speed change characteristics of automatic vee-belt speed change devicis in the previous paper, the present author derived an equation representing the characteristics, and showed that the equation was in good agreement with the actuality. In this paper, however, the author has given certain complementary considerations to the equation, seeking for conditions under which the characteristics were not affected by load-torques, discussed the effect of the friction caused by the sliding of movable sheaves on the characteristics, and investigated the traveling configurations of a vee-belt. The main results obtained are as follows : (1) It is theoretically necessary that the mechanisms for the generation of sheave-thrusts also create the sheave-thrusts proportional to shaft-torques in order that the characteristics are not affected by the load-torques. (2) The vee-belt has a tendency to entering into the vee-shaped grooves formed between sheaves. (3) As for the traveling curves of the vee-belt, the theory coincides with the experiments.抄録全体を表示PDF形式でダウンロード (994K) -
森 美郎, 矢部 寛, 小野 孝之, 山田 宏1964 年 30 巻 211 号 p. 421-426
発行日: 1964/03/25
公開日: 2008/03/28
ジャーナル フリーThe authors had analyzed the externally pressurized porous thrust gas-bearing in the preveous paper(2). In such type of bearings, their characteristics are much affected by the roughness of porous surface of bearings. In this paper, to avoid such effect and to improve the bearing performance, the authors investigated the porous thrust gas-bearing with flat and solid ring surface, so-called 'frange', around the porous part. They applied the preveous theory to this case and obtained the theoretical pressure distribution and load capacity. The experimental results coincided well with theoretical one qualitatively and fairly well quantitatively.抄録全体を表示PDF形式でダウンロード (641K) -
平野 冨士夫1964 年 30 巻 211 号 p. 427-436
発行日: 1964/03/25
公開日: 2008/03/28
ジャーナル フリーThe behaviour of a ball in a ball bearing was observed through flux change caused by a magnetized ball. An angular-contact ball bearing of the type 7307 B was used in the experiment. Under pure thrust load, the ball makes a complicated three-dimensional motion. The relation between the angular velodties of the ball ωb, the case ωc and the inner ring ω was investigated. The ratio ωb/ωc and ωc/ω are closely related to the parameter ZFc/Pa, where Z, Fc and Pa denote the number of balls, the centrifugal force per ball and the thrust load, respectively. In the range ZFc/Pa>1, not only the centrifugal force has a significant influence upon the behaviour of the ball, but also the effect of the gyroscopic moment of the ball becomes remarkab1e. These results were compared with the theoretical values.抄録全体を表示PDF形式でダウンロード (2662K) -
上野 拓, 豊口 満, 高井 義郎1964 年 30 巻 211 号 p. 437-448
発行日: 1964/03/25
公開日: 2008/03/28
ジャーナル フリーThe effects of various types lubricating oil additives (fatty oils, sulfurized fatty oil, metal soap, EP additives) were investigated with a power circulating worm gear testing machine using a hardened steel worm and a phosphorous bronz wheel. Following results were obtained from this study. (1) All additives used in this experiment showed antiseizure property on worm gear lubrication using steel and phosphorous bronz. (2) The additives affected occurrence of pittings on the tooth surface of the worm gear, especially of some phosphorous compounds promoted progressive severe pitting. (3) The fatty oils and sulfurized fatty oils showed high gearing efficiency and the highest effidency was over 93%. (4) The additives affected wear and roushness of gear tooth surface. Good results were obtained from fatty oils and some type of EP additives.抄録全体を表示PDF形式でダウンロード (1821K)
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