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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 18, Issue 74
Displaying 1-17 of 17 articles from this issue
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Shizuo DOI, Shinobu KATO, Nakahara SHIBATA1952 Volume 18 Issue 74 Pages 1-5
Published: 1952
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSDuring the cutting operation, the rate of gearing and the chatter vibration of work were measured simultaneously on a rotating film. On the cause of chatter, experimental researches were carried out employing the gears which have different accuracies. The occurrence of chatter is little affected by the torsional vibration of work due to gearing, but it is caused by the deflection of main spindle due to the fluctuation of force which acts in radial direction of gears corresponding to the rate of gearing. The properties of this chatter were ascertained comparing with the self-excited vibration, so called "chatter", concerning with the deflection of main spindle.View full abstractDownload PDF (795K) -
Sakae YONETSU1952 Volume 18 Issue 74 Pages 5-9
Published: 1952
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSIn centreless grinding of a cylindrical work in through feed method, it is desirable to permit of a control wheel being trued to give contact with the work across the full width of the face. So I have shown the formula of the control wheel surface as the envelope of the work cylinders revolving about the axis of the control wheel, and then the equations to calculate the angle of inclination of the truing guide and the distance of the truing diamond from the centre of the holder, corresponding to the relative location between the control wheel and the work. Morever, I have considered about the errors in the truing and been able to show some of fundamental guides for the design of the truing device, and the centreless grinding.View full abstractDownload PDF (597K) -
Susumu SIOZAKI1952 Volume 18 Issue 74 Pages 10-14
Published: 1952
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSIt was expected that there would be cutting residue when grinding, and after the experiment on this point found that the amount of it was unexpectedly great. So this cutting residue is very important for solving the grinding action problems and is mainly the factor of the distribution of the grains on the surface of the grinding wheel. On this study succeeded to introduce a formula for determining a cutting residue for almost all cases when the wear and the vibration of the wheel are negligible. Subsquently it was certicified that the roughness of the ground surface was just shown by the amount of cutting residue.View full abstractDownload PDF (758K) -
Koji ONO1952 Volume 18 Issue 74 Pages 15-20
Published: 1952
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSThe tangential grinding force, under the various conditions, was measured by a special grinding attachment, which was designed by the auther for the purpose to research the grinding mechanism without loading and glazing. From the results of experiments, the grinding force increases according to increase of depth of cut, decrease of surface velocity of wheel and increase of surface velocity of work. And the higher the grain size number and grade of wheel, the larger the force becomes. On other hand, the theoretical formula of grinding force was introduced under the hypothesis that it equals the product of the force acting on a grain and the number of cutting grains at the same time, and this formula well agreed with the experimental results.View full abstractDownload PDF (889K) -
Koji ONO1952 Volume 18 Issue 74 Pages 21-26
Published: 1952
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSThe theoretical formula on the roughness of grinding finished surface was introduced, basing upon the fact that the roughness is proportional to the root of mean cutting area (mean chip area) of a grain of wheel. The results of experiments well agreed with this formula : the surface roughness increases with depth of cut and work surface velocity, and with the decrease of wheel surface velocity, and it also increases with the decrease of the grain size number and grade of wheel.View full abstractDownload PDF (935K) -
Norio TAKENAKA, Shigeyasu SASAYA1952 Volume 18 Issue 74 Pages 27-32
Published: 1952
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSEffects of conditions of dressing on grinding resistance of test pieces were studied when various grinding wheels were dressed by a diamond dresser under various depth of cut and feed of the dresser. It was found that there exists a critical dressing speed for feed of the dresser, and grinding resistances of test pieces were approximately constant and independent of dressing speed when wheels were dressed with dressing speed over the critical one, but when wheels were dressed with dressing speed under the critical one, the grinding resistances increased with decrease of dressing speed and the surfaces of wheels were loaded. The critical speed increased with increase of hardness and grain size of wheel.View full abstractDownload PDF (838K) -
Tokio SASAKI, Kenjiro TOKUNAGA1952 Volume 18 Issue 74 Pages 32-36
Published: 1952
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSThe best conditions to get perfect mirror-finished surface by electrolytic polishing were determined with experimental research in which polishing conditions such as specific gravity of electrolytes, distance between anode and cathode, area ratio of anode to cathode and roughness of pre-finished were varied. Moreover, the variation of dimension and shape occured after the process of electrolytic polishing and the influence of the shape of cathode were investigated.View full abstractDownload PDF (598K) -
Tokio SASAKI, Shigeru ONO, Yukio HONJO1952 Volume 18 Issue 74 Pages 36-40
Published: 1952
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSIn this research we investigated not only the maximum load under which oil-or grease-film is able to avoid the seizure of sliding parts, but also frictional characteristics with a kind of extreme-pressure teasting apparatus in which three balls and one race of ordinary thrust ball bearing used as like as the four-ball system. The three balls of 1/4´´in dia. seated on the conical holes of holder form three E. P. contact surfaces on the bearing race of 42.5 mm P. C. D. which rotates at 450 rpm, and then loads are stepwise increased.View full abstractDownload PDF (603K) -
Tokio SASAKI, Shigeru ONO1952 Volume 18 Issue 74 Pages 41-45
Published: 1952
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSIn this paper the characteristics of starting friction under loading of ball bearing in relation to the load, the recess time and the bearing temperature are reported. As compared with those of taper roller bearing already reported, the loading conditions are severer, and their effects on frictional characteristics have been found.View full abstractDownload PDF (589K) -
Tokio SASAKI, Shigeru ONO1952 Volume 18 Issue 74 Pages 45-47
Published: 1952
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSThe starting frictions of cylindrical and taper roller bearings under comparatively severe loading conditions were measured. From these data and already mentioned data of ball bearing, the characteristics of starting friction of rolling bearings in general were discussed.View full abstractDownload PDF (419K) -
Tokio SASAKI, Shigeru ONO1952 Volume 18 Issue 74 Pages 48-51
Published: 1952
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSWe researched the frictional characteristics and the temperature rises of NTN brand "Lubepact" ball bearing, grease-packed sealed-bearing. Then it is found that this bearing is superior than ordinary one except under special severe conditions, but some attentions must be paid for heat condition of this bearing.View full abstractDownload PDF (526K) -
Tokio SASAKI, Haruo MORI, /, [in Japanese]1952 Volume 18 Issue 74 Pages 51-56
Published: 1952
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSIn 1st and 2nd reports of the researches on the air-bearing, we discussed the measurement of the coefficient of air-bearing friction by damping method with rotating disc and pendulum method, but the former was not suitable for high speed rotation, and the latter contained some error due to the moment of air supplying rubber tube. In this report, therefore, by making a newly designed tester of balance beam using a zero-setting method, we measured accurately the coefficient of air-bearing friction for the state of high speed rotation as high as 12 500 rpm, and investigated the influences of bearing length and inclined angle of air jetting hole comparing with half air-bearing. The coefficient of air-bearing friction can be made easily to as same as 10-3 order by adjusting air supplying pressure for the high speed rotation of 12 500 rpm. but then the air pressure is required to be higher. The half bearing issuperior to the full-circle bearing for the stability when changing the bearing load, but it is inferior for the frictional resistance, air supplying pressure and quantity of flow.View full abstractDownload PDF (686K) -
Tokio SASAKI, Haruo MORI, Shoji KAWANAKA, Takayuki KATO1952 Volume 18 Issue 74 Pages 56-61
Published: 1952
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSIn the paper, "Research on the Air-Bearing (2nd report)", we discussed that the air-flow through air supplying jetting-hole into bearing clearance is in the state of critical pressure and sound velocity. Then, it is imagined easily that the jetting-hole has large effects upon the air-flow in the bearing clearance and consequently influences on the frictional characteristics. In this paper, we proceeded the consideration about the air-flow just after the jetting-hole by measuring air pressure distribution under the low pressure of air supply, and varying the form and dimension of jetting-hole we inspected their influences on the frictional charcteristics and the quantity of flow. Thus, it was clarified that making the air supplying slot longer along the axis of shaft has better effects in order to reduce the frictional resistance than making the diameter of the air supplying hole larger, and the flowing qnantity is proportional to the product of periphery length of air hole, bearing clearance at the inlet and absolute pressure of supplying air. Depending upon the above considerations. we revised the formula of the air-flow for air-bearing described in the 2nd report.View full abstractDownload PDF (769K) -
Yukiti OHTA1952 Volume 18 Issue 74 Pages 61-66
Published: 1952
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSThis report relates to some applications of the fundamental theory which has been expressed before by the author. One of them is that to gear forms. He has obtained a general solution of gear forms in space as that of skew gears and described several properties of those surfaces obtained, as those of slipping lines, normal surfaces and so on Further he has obtained a solution to require two surfaces A and B under the condition that the locus of contact lines is given. Another application is to the generation of a surface cut by an edge and further by a surface in case such as thread milling or hobbing.View full abstractDownload PDF (604K) -
Tosimaro MIYAZAKI1952 Volume 18 Issue 74 Pages 66-72
Published: 1952
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSThis treatise is the report of the researches of methods how to make the globoidal worm and worm wheel at a low price in the hobbing machine. In the first chapter, to begin with, the profiles of globoidal worm teeth are investigated. Then, as the results of the investigation, it is stated that the worm wheel cut by the hob which is the same with globoidal worm, is the same one cut by the several cutting edges. The profile of the worm wheel tooth cut by Lorenz's device is also investigated. In the second chapter, the practical cutting methods are stated. And, in order to get the good contact of globoidal worm and worm wheel, the cutting method to modify the profiles of their teeth is stated.View full abstractDownload PDF (739K) -
Naoteru ODA, Masami KUSAKABE1952 Volume 18 Issue 74 Pages 72-75
Published: 1952
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSIn this study, we compared two vibration characteristics of a car below the resonant speed, in a case, used as a motor car, and in the other case, used as a trailer. In the case of a motor car, about a half of motor weight is assumed to be unsprung weight over the trailer one. Results of the studies are as follows : -1°The natural periods of the car are not significantly different in the two cases, in both the vertical and transversal vibrations. 2°As to the vertical vibration. (1) Under 70 km/h, the heavier the unsprung weight becomes, the larger the vibration increases. (2) From 70 to 82 km/h, there are no difference. As to the transversal vibration. (3) Under 65 km/h, the vibration is larger in the heavier unsprung weight. (4) From 65 to 75 km/h, there are no difference. (5) Over 75 km/h, the vibration is rather small in the heavier unsprung weight.View full abstractDownload PDF (465K) -
Naoteru ODA1952 Volume 18 Issue 74 Pages 76-78
Published: 1952
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSCorrelation between vertical and transversal accelerations of a running railway car is discussed for vibration charts. Considering that vertical and transversal accelerations recorded are the samples from variables X and Y, respectively, the writer calculates the correlation coefficients γ, and correlation ratios ηYX and ηXY : γ=0.249, ηYX=0.254, ηXY=0.269. The results are tested statistically.View full abstractDownload PDF (434K)
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