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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 27, Issue 184
Displaying 1-8 of 8 articles from this issue
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Katsundo Hitomi, Inyong Ham, George L. Thuering1961 Volume 27 Issue 184 Pages 1909-1921
Published: December 25, 1961
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSThree grades of nodular cast iron (60, 80, and 100) were tested to determine the cutting force and net horsepower required to machine the materials, to determine the performance of several grades of carbide and ceramic cutting tools, and to investigate the flank adhesion phenomenon. Cutting force required to machine 80 and 100 grades decreased smoothly with an increase in cutting speed. It was found that the effect of feed rate on cutting force was larger than that of depth of cut. When grade 60 was machined with carbide tools, flank adhesion was encountered with accompanying sharp increases in cutting force values at speeds above a critical cutting speed. This critical cutting speed and the increase in cutting force decreased as the titanium content of the cutting tool increased. No flank build-up occurred with ceramic tools. This phenomenon was explained by the oxide film theory.View full abstractDownload PDF (3076K) -
Isamu YOSHIMOTO1961 Volume 27 Issue 184 Pages 1921-1930
Published: December 25, 1961
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSIn order to clarify the effect of rolling conditions on the fatigue strength of the rolled screw threads, the V grooves were rolled on the cylindrical specimens and the rotating bending fatigue tests were carried out on these specimens. For this purpose the simple rolling attachment was designed and manufactured. The rolling pressure in the case where the V grooves were rolled by this attachment, was measured. This rolling process was analysed, and compared with the process of thread rolling. In the experiment the rolling conditions of the V groove were changed by varying the number of revolutions of the specimen during rolling process. The specimen materials were medium carbon steel cold worked and Cr-Mo steel quenched and tempered. As a result it was found that the endurance limits of the specimens with the rolled V groove were 2.5∼2.8 times higher than those of the specimens with the cut V groove. Statistical analysis has shown that there exists a definite relationship between the rolling condition and the endurance limit.View full abstractDownload PDF (1245K) -
Hideo SUZUKI, Eisuke TAKANO1961 Volume 27 Issue 184 Pages 1931-1937
Published: December 25, 1961
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSThe spring back in the plastic bending of a double clad sheet metal was treated theoretically and experimentally. In consequence of the differences among the mechanical properties of the inside and outside materials in the clad sheet metals, six kinds of the stress state in loading are considered in the analysis of the spring back. The theoretical equations obtained are composed of the mechanical properties and the work cond tions (the thickness of the materials and the radius of curvature in the extreme point of the punch). The materials tested are Brass, Phosphor-Bronze and Nickel-Silver clad in Silver. The results of the spring back calculations agree well with the experimental data. Then, we can evaluate the radius to which the double clad sheet metal must be bent in order to obtain a desired radius of curvature.View full abstractDownload PDF (726K) -
Kiyoshi OGAWA, Atuo YOSHIMATU, Shigeo WAKAHARA1961 Volume 27 Issue 184 Pages 1938-1946
Published: December 25, 1961
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSPreviously, K. Ogawa represented an exhaustive survey on the synthesis of a four-bar linkage in which the locus of a point on the connecting rod was described systematically in a wide range of link dimensions. In this paper, the displacement characteristic of a six-bar linkage in the range of operation was analysed, where the driving crank made a complete revolution while follower crank oscillated. As a result, the relation-ship between the form and its displacement became clear, when various forms of the six-bar linkage were given. Therefore, it is expected to provide a direct aid for designers in selecting a mechanism to produce a desired motion.View full abstractDownload PDF (794K) -
Kiyoshi OGAWA1961 Volume 27 Issue 184 Pages 1947-1954
Published: December 25, 1961
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSOn a plane linkage mechanism having lower turning pairs only, the object of the synthesis of mechanism is to provide a computing or irregular moving mechanism. Six-bar linkage according to the present investigation is possible to remove the drawbacks inherent to the existing four-bar linkage system. In this paper, new rapid methods of the geometrical synthesis and precise methods of the numerical calculation on a few types have been led, then it is expected that the design of linkages will be improved and their accuracy will be bettered.View full abstractDownload PDF (716K) -
Kiyoshi OGAWA1961 Volume 27 Issue 184 Pages 1954-1960
Published: December 25, 1961
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSIn the last report, the synthesis of six-bar linkage mechanisms was studied on the uncleared problem. In this paper, as the result of the investigation on the synthesis of C-type, the auther found a new type of the thread take-up lever used for the sewing machine, employing six-bar linkage having turning pairs only, having its free end adapted to perform an ideal thread take-up motion, and attaining the most silent operation.View full abstractDownload PDF (859K) -
Tokio SASAKI, Kenjiro OKAMURA, Tadataka KONISHI, Yoshinobu NISHIZAWA1961 Volume 27 Issue 184 Pages 1961-1970
Published: December 25, 1961
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSFor the purpose of improving lubricating performance on the gear-tooth surface, the authors investigated the relationships of lubrication properties to the driving conditions and the lubricating methods with the gear lubricating tester used a power circulating system with which the frictional moment and the oil-film thickness between gear-teeth were measured. The lubricating characteristics have been classified by the values of the dimentionless parameter ηvr/P^-n as follows : boundary lubrication ≤5×10-6≤ semi-fluid lubrication ≤5×10-4≤ fluid lubrication. Owing to the effects of the discontinuous contact, the dynamic load, the variation of frictional direction and the surface roughness on the gear-tooth surface, the frictional coefficient is larger and the oil-film thickness is smaller than those obtained respectively on the roller surface which was considered in the equivalent condition to the gear-tooth surface. The agitating resistance in the oil-bath lubrication is much influenced by the oil viscosity, the rotating speed and the oil amount.View full abstractDownload PDF (1154K) -
Tokio SASAKI, Toshio TESHIMA1961 Volume 27 Issue 184 Pages 1971-1979
Published: December 25, 1961
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSAs the reference data for the contact deformation in a ball bearing, the contact deformation and its elastic recovery on the surface where comparatively small imprint occurs were investigated. For the above experiment the air-micrometer was applied to measure the amount of deformation. The experimental results obtained are as follows : The magnitude of contact deformation is approximated by Hertz's equation within comparatively low mean contact pressure and its elastic recovery is also given in the same form as Hertz's equation, tut the load exponent is rather small. Liquid lubricant gives little effect to contact deformation and in the case of solid lubricant the contact deformation increases rapidly within the range of mean contact pressure 130 kg/mm2 and after that it reaches the state similar to that or liquid lubricated surface. The maximum value of deformation and the depth of imprint are not so much effected by repetitive loading at the same position. An equation of rolling frictional resistance is reduced by deformation work obtained from the deformation and elastic-recovery curves.View full abstractDownload PDF (962K)
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