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- TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C
- TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B
- TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A
- Transactions of the Japan Society of Mechanical Engineers Series C
- Transactions of the Japan Society of Mechanical Engineers Series B
- Transactions of the Japan Society of Mechanical Engineers Series A
Volume 9 (1943 - 1944･･･
- Issue 37-4 Pages 113-
- Issue 37-3 Pages 53-
- Issue 37-2 Pages 103-
- Issue 37-1 Pages 161-
- Issue 36-4 Pages 89-
- Issue 36-2 Pages 69-
- Issue 36-1 Pages 121-
- Issue 35-4 Pages 27-
- Issue 35-3 Pages 23-
- Issue 35-2 Pages 43-
- Issue 35-1 Pages 33-
- Issue 34-4 Pages 1-
- Issue 34-3 Pages 1-
- Issue 34-2 Pages 1-
- Issue 34-1 Pages 1-
Volume 8 (1942)
- Issue 33-4 Pages 215-
- Issue 33-3 Pages 33-
- Issue 33-2 Pages 63-
- Issue 33-1 Pages 185-
- Issue 32-4 Pages 185-
- Issue 32-3 Pages 21-
- Issue 32-2 Pages 53-
- Issue 32-1 Pages 117-
- Issue 31-4 Pages 101-
- Issue 31-3 Pages 1-
- Issue 31-2 Pages 25-
- Issue 31-1 Pages 43-
- Issue 30-4 Pages 1-
- Issue 30-2 Pages 1-
- Issue 30-1 Pages 1-
Volume 25, Issue 154
Displaying 1-11 of 11 articles from this issue
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Yoshio TOMONAGA1959 Volume 25 Issue 154 Pages 445-446
Published: June 25, 1959
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSDownload PDF (435K) -
Masaya IMAI1959 Volume 25 Issue 154 Pages 447-451
Published: June 25, 1959
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSRelative movement between rolling bearing races and shafts or housings is frequently experienced in practice to cause a damage of fitting surfaces, and is known as the creep of rolling bearing races. It was generally agreed that the creep occurs due to the rolling motion of races on shaft or housing surfaces, but there has not been any experiment, which confirms the mechanism. The author has confirmed the mechanism experimentally. Also, the author reports the experimental results of slip motion as well as its quantitative interpretation, and classified the creep of slip due to oil film formation apart from the heretofore known creep due to rolling.View full abstractDownload PDF (683K) -
Tokuzo MATSUYAMA, Takao KAYABA1959 Volume 25 Issue 154 Pages 452-457
Published: June 25, 1959
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSDownload PDF (857K) -
Keikichi EBIHARA, Kunikazu HAYASHI1959 Volume 25 Issue 154 Pages 458-464
Published: June 25, 1959
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSA theory on galling wear has been proposed by R. Holm, that is, the amount of wear is proportional to the normal pressure and sliding distance, while it is inversely proportional to the hardness of the softer of the two rubbing materials. The theory has been improved and demonstrated experimentally by several investigators. However, actual wear characteristics are apparently more complicated. The authors have attempted to find a simple theory, which reduces the complication of actual test results by the aid of dimensional considerations, and have seen that the rate of wear par unit normal pressure and sliding distance is a function of dimensionless numbers, containing PV and V, where P and V denotes normal pressure and sliding velocity respectively, and have shown that above result is formally identical with Holm's theory.View full abstractDownload PDF (790K) -
Toshio SATA1959 Volume 25 Issue 154 Pages 464-471
Published: June 25, 1959
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSHigh-speed cutting and hot-machining of Cr-Mo steels are carried out. It is found that the shear stress on the tool face is always lower by some amount than that on the shear plane. In high-speed cutting the shear stresses on the shear plane and tool face are also found to remain about constants respectively with increasing cutting speed, although these stresses decrease with increasing heating temperature in not-machining. The flow stresses in cutting, as well as in material tests at room and high temperature, are discussed, taking into consideration the effects of temperature and strain rate. Then it is shown that these flow stresses are expressed by a unique function of the velocity-modified temperature θm, which is defined as follows : [numerical formula] where[table] Above mentioned features of flow stress in cutting may be satisfactorily explained in terms of this velocity-modified temperature.View full abstractDownload PDF (1042K) -
Junichiro KUMABE, Tadao TAKAHASHI1959 Volume 25 Issue 154 Pages 472-478
Published: June 25, 1959
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSThe effects of ultrasonic sawing (frequency 19.7kc, amplitude max 7.5μ) of the aluminum, brass, duralumin, mild steel etc, by using the hack sawing machine, were investigated. The results were as follows : 1) A built-up edge and residual chip were not obsereved in the ultrasonic hack saw even for soft material. 2) The cutting time is decreased to about 1/2∼1/4 of the conventional sawing. 3) This ultrasonic hack saw was able to cut-off the brittle material smoothly, for example tellurium, which is easily cracked by the conventional sawing cutting resistance. 4) It was proved that this ultrasonic hack sawing was a very effective cut-off process.View full abstractDownload PDF (1992K) -
Junichiro KUMABE1959 Volume 25 Issue 154 Pages 479-486
Published: June 25, 1959
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSIn this report, the effects of ultrasonic gear cutting by using the MICRON hobbing machine were investigated. The experiments were performed by a gear blank of ultrasonic vibration, which is chucked to the main spindle and conventional motion hob. The frequency is 29 400 c/s constant, amplitude variable and three kinds of gear blank of M=0.75 Z=22 are used, i.e., those of aluminum, brass and mild steel. The results were as follows ; 1) At first, it was found that the revolving gear blank can be vibrated by using the carbon brush and brass slip ring without any spark trouble etc. 2) The type of chip was shear or flow type, but the conventional chip was all tear type. 3) The machined surface was very smooth. 4) After all, it was found is this ultrasonic gear cutting that the heigh frequency impact farce, which caused the work or tool to vibrate, was very important facter in the cutting process.View full abstractDownload PDF (3476K) -
Takakichi UZAWA1959 Volume 25 Issue 154 Pages 487-494
Published: June 25, 1959
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSRegarding the inner profile of wire drawing die, besides conical die those which have circular, hyperbolic or elliptic surface of revolution were studied. But die which has exponential surface of revolution has not been discussed. In multistage plastic working the ratios of cross sectional areas of work are changed in general in according to geometrical progression. Therefore, in continious plastic working it may be reasonable that they are changed exponentially. Exponential die is an application of this idea. In this report, from the theoritical formula of the drawing stress in this die, a practical stress formula for calculation is related and stress calculation is made. Then it has been revealed that, when compared with the stress in the conical die, both have little difference for some die angles.View full abstractDownload PDF (731K) -
Shigehiko YAZAWA1959 Volume 25 Issue 154 Pages 495-502
Published: June 25, 1959
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSThe difference between diameters of die-hole and of sunk tube is due to a plastic deformation of the tube which occurs after it has left completely the wall of dies. This plastic deformation is analysed theoretically under several assumptions. As a result, the difference between the diameters can be computed by using the values determined by sinking conditions and the mechanical properties of the sunk tube materials. The fillet radius of dies has a conspicuous influence on the plastic deformation of tubes and the ratio of the radius to the thickness of tubes should be larger than 10 to keep the difference between the diameters least. Experiments are carried out on steel tubes. The results agree well with the analysis.View full abstractDownload PDF (822K) -
Ken'iti MINAMIODI, Makoto KIKUKAWA, Yoshihisa SATO, Yoshitoshi YOKOYAM ...1959 Volume 25 Issue 154 Pages 503-510
Published: June 25, 1959
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSThe handling capacity of a vertical bucket grain elevator of centrifugal discharge type, which was deficient owing to the lower discharge efficiency, was considerably improved by changing the shape of the bucket. Further researches on the behavior of grain until the discharge which had caused the improvement were carried out on a model equipment and the following results were obtained. In regard to the discharge efficiency the bottom and top angles of the bucket are essential and those exceeding 25° and 70° respectively seem to be more favourable. If the bottom angle is smaller than 25°, some part falls out before reaching the chute ; if the top angle is smaller than 70°, some quantity is overflowed before the bucket arrives at the top position. Discharge takes place mostly passing closely over the bucket edge in an approximately parabolic motion with a initial velocity nearly equal to the circumferential velocity of the edge.View full abstractDownload PDF (1790K) -
Kiyoshi OGAWA1959 Volume 25 Issue 154 Pages 510-523
Published: June 25, 1959
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSPreviously the synthesis of the 4-bar linkage has been carried out by using Mittelpunkt Kurve and Kreispunkt Kurve or their particular solutions, but these methods are very difficult and need many hours, to apply in addition to their being inaccurate. In this paper, the locus of a point on the connecting rod has been described systematically in a wide range of the linkage dimension. It is found that these curves can be classified into several types according to their curvature and undulation, and that the rotating centre of the driving crank falls on a solid intersection nomogram which gives the length r of the driving crank and the coordinate of a point on the connecting rod. As a result, we can obtain a more rapid synthesis of the 4-bar linkage with higher accuracy than was given by the conventional methods, and the new method will also make it easier to obtain that of the 6-bar linkage.View full abstractDownload PDF (1013K)
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