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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 28, Issue 193
Displaying 1-20 of 20 articles from this issue
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Matataro TSUBONE, Akira YAMAMOTO, Takashi NAKADA1962 Volume 28 Issue 193 Pages 1023-1033
Published: September 25, 1962
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSIn conventional precision screw cutting, the pitch accuracy of cut screw mainly depends on the lead screw of the screw cutting lathe. The lead screw serves as the accurate feeder of a cutting tool, on the other hand it is worn out by the heavy load of the carriage. Accordingly, the pitch accuracy of the lead screw will be degraded rapidly. While, by additional installing a precision master screw and a feedback controller besides the ordinary lead screw, the error caused by the driving screw will be eliminated and the high accuracy will be held for a long time. This paper is the report of the control effect in our screw cutting lathe, which is equipped with the control system based on the above mentioned principle. The screw cutting accuracy of our lathe being degraded to 80μ/300mm, was improved to 17μ/300mm by using the feedback controller, and further it attained to 4μ/300mm by using the compensation cam at the same time.View full abstractDownload PDF (1371K) -
Keiji OKUSHIMA, Kazuaki IWATA1962 Volume 28 Issue 193 Pages 1034-1043
Published: September 25, 1962
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSCutting mechanism of materials accompanying strain-hardening was analysed on the basis of the flow region concept. The effect of microstructure of materials on machinability of carbon steels (S15C, S40C, and SK4) was investigated from the viewpoint of chip formation. The effect of microstructure of materials on the cutting force, the location and the size of the flow region, the mean friction angle on the tool face, the conventional shear angle were discussed. The effects of feed and side rake angle on cutting process were also discussed. It was found out that inclination of the starting boundary line of the flow region was almost constant, and inclination of the end boundary line and the size of the flow region showed a maximum value at the lamellar portion of pearlite of 20 to 30%. Shear stress in the flow region and the conventional shear stress showed a tendency to decrease with an increase in the lamellar portion of pearlite.View full abstractDownload PDF (1477K) -
Keiji OKUSHIMA, Tetsutaro HOSHI1962 Volume 28 Issue 193 Pages 1044-1054
Published: September 25, 1962
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSThe effect of the cutter diameter was studied in respect with the failures of carbide facemilling cutters, including the failures at a high cutting speed and the failures at a low cutting speed. The results obtained from the experiments are studied in the first half of this paper, mainly on a theoretical basis that the failures concern the situation of the temperature cycles to which the vicinity of the cutting edge is subjected. An analytical expression of the temperature cycles is introduced in the latter half, and it could also explain the experimental results.View full abstractDownload PDF (1613K) -
Keiji OKUSHIMA, Tetsutaro HOSHI1962 Volume 28 Issue 193 Pages 1055-1066
Published: September 25, 1962
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSSeveral sorts of cracks which appear in the carbide face-milling cutter, including the thermal crack, are investigated in respect with their significances as the causes of tool failures which occur over a wide range of the cutting speed. Tool failures at a high cutting speed are classified into several types from their appearances and each type concerns with a singular crack. The so-called thermal crack is one of these cracks which cause the tool failures at a high cutting speed. The cutting speed, the feed and the cutting fluid influence the sort of the crack which causes the tool failure so that the type of the failure changes. Including the thermal crack, some cracks are explainable that they are due to the fatigue of the carbide at an elevated temperature. But there are a few of such cracks that do not conform to the above mentioned explanation.View full abstractDownload PDF (2292K) -
Noboru SHINOZAKI1962 Volume 28 Issue 193 Pages 1067-1075
Published: September 25, 1962
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSSurface finish and tool wear were observed and discussed when alloy steel (soft, medium and hard) was cut with carbide face milling cutter under electric resistance heating. When the soft and medium alloy steels were cut, surface finish became better with the increase of cutting temperature (the increase of current), but it became worse with further increasing of current beyond a certain value. Damage of tool was least when cutting conditions including electric current were so good that builtup edge was just disappeared, and with the increase of current, damage became more which was caused by repeated thermal stress, and further increase of current expedited the flank wear. When hard alloy steel (HRC 56) was cut, rake surface of tool was broken as a shell and the time of broken down was quick as the current was large. This damage is considered to occur by cracks which are subjected to the magnitude and number of times of repetition of thermal stree.View full abstractDownload PDF (2334K) -
Masasuke TUEDA, Yosio HASEGAWA, Yutaka NISINA, Tosiaki HIRAI1962 Volume 28 Issue 193 Pages 1076-1084
Published: September 25, 1962
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSThe temperature distributions along the two cutting edges of a drill, as well as their unequality between both edges, are treated theoretically under some practical conditions, and measured actually by the use of the drill-constantan thermocouples. The phenomenon of heat accumulation near the bottom of the work, and the peculiar aspects on the temperature rise during break-through are studied also in this research.View full abstractDownload PDF (1128K) -
Seiya HASHIMOTO1962 Volume 28 Issue 193 Pages 1085-1093
Published: September 25, 1962
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSIt was reported by the 3rd report that the viscosity of lubricants and the peripheral speed of the gears remarkably affect the endurance limit of the pitting. These facts indicate the importance of the lubrication to the pitting. In this report, the experimental studies of the lubricating film is presented. The film thickness was obtained by measuring the electric capcity between the two rolling rollers. Comparing the measured film thickness with the customary theoretical values of two kinds, the one obtained by assuming the constant viscosity of lubricant and the other by taking into account the changes of the viscosity under the pressure, the measured film thickness did not coincide with the theoretical values precisely. So, for the further theoretical analysis of lubricating film, the film temperature and the elastic deformation of rollers should be taken into consideration.View full abstractDownload PDF (1129K) -
Kunikazu HAYASHI1962 Volume 28 Issue 193 Pages 1093-1101
Published: September 25, 1962
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSThe load distribution on the contact line of helical gear teeth is treated. The deflection characteristics of gear teeth result in the second kind integral equation of Fredholm, and the measurement of strain at the root of a gear tooth leads to the first kind of the same type equation. The load distribution can be obtained as the solution of any of the above equations. Since each of them can hardly be solved analytically, numerical solution by a system of linear equations is introduced. The choice of numerical integration formula, the number of ordinates, the accuracy of the solution and the basic characteristics of the load distribution on the contact line of helical gear teeth are investigated thoroughly in the present paper, using thin canti-lever plates with large width. It is concluded that Gauss's formula of numerical integration is most suitable and can be used conveniently for this problem.View full abstractDownload PDF (1114K) -
Load Distribution on the Contact Line of Helical Gear Teeth : 2nd Report, Gears of Large Tooth WidthKunikazu HAYASHI, Takehide SAYAMA1962 Volume 28 Issue 193 Pages 1102-1112
Published: September 25, 1962
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSThe load distribution on the contact line of helical gear teeth with large width is discussed, applying the basic theory in the preceding paper. The kernel of the integral equation is obtained experimentally with actual gear teeth or racks, which is quite laborious. However, the authors are encouraged with very interesting results as follows. The deflection feature of a gear tooth can be approximated by that of a thin canti-lever plate with sufficient accuracy, which serves to save the time and labor in the experiments. The most suitable tip relief can be found theoretically and proper tip relief diminishes the increase of load at the tooth end without any end relief or chamfer. This is especially important in marine turbine reduction gears.View full abstractDownload PDF (1296K) -
Ryuichi MORIKAWA1962 Volume 28 Issue 193 Pages 1113-1126
Published: September 25, 1962
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSThe present paper has made the cutting characteristics of rubber clear theoretically and experimentally, using a single point cutting tool as follow : (1) There was a close connection between the shape of chips and the worked surface at high speed cutting, then the region of grinding phenomena became clear. (2) The cutting force created by a single point was found to be indicated by the sum of three components, hysteresis loss, surface friction between the tool and rubber, and digging out. The characteristics of the above components were clearly known. (3) The characteristics of scratching force and indenting force created by a spherical point and a pyramidic point were theoretically investigated and experimentally confirmed. (4) The cutting force at high speed was obtained by experiments under various cutting conditions, and thier effects on and causes for the force were found out.View full abstractDownload PDF (1760K) -
Ryuichi MORIKAWA1962 Volume 28 Issue 193 Pages 1127-1138
Published: September 25, 1962
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSThe author studied some factors affecting the tangential force at the cylindrical grinding of rubber rolls, using abrasive wheel, and introduced the characteristics equation of the grinding forece, under considerations of the static mechanical relation between wheel and rubber roll, and experimental rusults of the 1st report on the high speed cutting with single point tool. This equation was corrected and confirmed by means of the experiment under various conditions. The formulae of the equation ; [numerical formula] where T : Total tangential grinding force. T1 : tangential grinding force at the unit width of wheel.View full abstractDownload PDF (1308K) -
Hideo SUZUKI, Eisuke TAKANO1962 Volume 28 Issue 193 Pages 1139-1148
Published: September 25, 1962
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSIn this paper, the spring back in the plastic bending of a single clad sheet metal was treated theoretically and experimentally in the same way as in that of a double clad sheet metal previously reported. In consideration of the variations of the stress states in loading due to the work conditions and the differences among the mechanical properties of the clad and base metal of the clad sheet metals, eighteen equations for the spring back were obtained theoretically. The results of the spring back calculations agree well with the experimental results. Then, the effect of the clad ratios etc. on the spring back is made clear. Brass, Phosphor-Bronze and Nickel-Silver clad in Silver were used as the tested materials.View full abstractDownload PDF (921K) -
Haruo MORI, Hiroshi YABE1962 Volume 28 Issue 193 Pages 1149-1159
Published: September 25, 1962
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSThe theoretical study was made on the following points concerning the design and analysis of the hydrostatic bearing. (1) The optimum dimensions of the recess and the external restriction, corresponding to the conditions of the minimum power consumption and the maximum stiffness of the bearing. (2) The corrections of the load capacity and the flow quantity affected by eccentricity in applying the results of the parallel surface bearing to the cylindrical bearing. (3) The squeeze film effect in the hydrostatic bearing with the recess and the external restriction.View full abstractDownload PDF (1111K) -
Kazuo KAKUTA1962 Volume 28 Issue 193 Pages 1160-1167
Published: September 25, 1962
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSIn the previous paper, in a low speed range the friction moment of radial ball bearings under thrust load was analysed theoretically and the theory was confirmed by experiments. Moreover, it was pointed out that the moment increased with the rotational speed of the bearing because of the visous friction of lubricant. In this report, in a high speed range the theoretical analysis of the friction moment of the bearing under thrust load is compared with experiments. Supposing the hydrodynamic lubrication in the ball bearing, the formula of the moment is induced approximately from the hydrodynamic lubrication theory of rolling cylinders. The moment is measured under various conditions of the speed, the load and the viscosity of lubricant. The agreement of the observed values with the calculated ones is fairly well.View full abstractDownload PDF (837K) -
Teruo IGARASHI1962 Volume 28 Issue 193 Pages 1168-1175
Published: September 25, 1962
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSIt is considered by experiences that a noise of fitted ball bearing is affected by many factors, especially the radial clearance and the race fitting. The author measured the noise of fitted ball bearing with known radial clearance and at several race fitting conditions under the radial load, analyzed the peak values of the frequency spectrums, and obtained the results as follows : -(1) the frequencies and the total sound pressure level of the noise decrease with the radial clearance. (2) The total sound pressure level of the noise is determined by the summation of some radial contact forces between the races and the balls and the size of the loaded zone. (3) The frequencies of the noise increase with the interference of the outer ring. But, the total sound pressure level increases with the interference of the outer ring in the case of small radial clearance, while it decreases in the case of large radial clearance.View full abstractDownload PDF (1387K) -
Tokuzo MATSUYAMA, Takao KAYABA1962 Volume 28 Issue 193 Pages 1175-1184
Published: September 25, 1962
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSThe wear condition of sleeve bearing is affected seriously by using oil with solid particle as dirt or metal dust, and in general the wear of bearing alloy increases. As a result of this increase sleeve bearing sometimes seizes. Then, in this report, the wear tests were carried out when using oils containing some foreigh particles in order to give some information on the effects of particle size and concentration in oil on the wear of bearing alloys and so forth. The results of this investigation, revealed the fact that an extent of load where the wear hardly increased with the increase of load under a cetain condition, and the effect of size of particle were related to the oil-film thickness, and the wear of bearing alloy was small when the hardness of shaft was high, etc.View full abstractDownload PDF (1449K) -
Kiyoshi IDEHARA, Takeshi OHASHI1962 Volume 28 Issue 193 Pages 1184-1194
Published: September 25, 1962
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSOn the basis of hydrodynamic theory of lubrication, the components of the resultant film force acting on the journal in the infinitely wide bearing can be expressed as functions of x, y, x^. and y^., where x and y are the rectangular co-ordinates of the displacement of the journal center. By expanding these functions into the power series in x, y, x^. and Y^., the film elasticity and film damping for small displacements from the position of static equilibrium are derived. In the process of the derivation, the influence of the variation of the film extent due to the motion of the journal center is taken into account in an approximate manner. It is shown that the cross coupling terms of both film elasticity and film damping are not small in comparison with the other terms, and that they reach their minimum values at some values of the Sommerfeld variable.View full abstractDownload PDF (1149K) -
Tokio SASAKI, Kenjiro OKAMURA, Tadataka KONISHI1962 Volume 28 Issue 193 Pages 1195-1202
Published: September 25, 1962
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSDiscontinuity of load is one of the characteristic properties in the gear lubrication. In order to investigate the influence of discontinuous load upon the lubricating performance on the gear-tooth surface, the wedge- and squeeze-effects of the lubricating oil-film are theoretically analyzed and the fundamental relations among the parameters indicating the influence of load discontinuity are induced. By means of these relations the estimations under the unsteady state are derived for the pressure distribution, the minimum thickness and the load-carring capacity of the lubricating oil-film. The continual length of the unsteady state caused by discontinuous load is also given. These results may be able to give some good suggestions to the consideration of the lubricating characteristics on the gear-tooth surface.View full abstractDownload PDF (903K) -
Tokio SASAKI, Kenjiro OKAMURA, Tadataka KONISHI1962 Volume 28 Issue 193 Pages 1203-1212
Published: September 25, 1962
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSThe experimental study of gear lubrication was carried out with the tests, using rollers or gears, but the relation between the both tests has not been clarified yet. It is the purpose of this study to find out the lubricating characteristics at the any point on gear-tooth surface and to investigate the correlation between the both tests. The fundamental equations are induced for the frictional characteristcs under a discontinuous load. By the application of these results to load variation on the gear-tooth surface, the influence of load variation is derived for the any meshing point. Considering the influence by the difference of the both tests upon the test results accurately, the roller test gives coincidence with gear test on the average lubricating characteristcs.View full abstractDownload PDF (1112K) -
Shoichi FURUHAMA, Yositane OYA, Tomikazu NAKAMURA1962 Volume 28 Issue 193 Pages 1212-1223
Published: September 25, 1962
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSOn an assumption that the oil comes up by the action of "a non-return motion of the oil, " the amount of oil which come up through the clearances about the oil control ring and the top land of the piston was calculated on the bases of the hydrodynamical theory. And then the Nissan's automotive engine (1200 cc, 4 cylinders, water cooling) was run on the bench, and the oil loss when these clearances were changed was measured by a special precision divice. As a result, the following fact was obtained, i.e. the clearance between the cylinder wall and the top land of the piston, and the perfectness of the contact of the oil control ring with the upper side of the groove, and also with cylinder wall affect extremely the oil loss.View full abstractDownload PDF (1242K)
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