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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 23, Issue 130
Displaying 1-15 of 15 articles from this issue
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Akira YAMAMOTO1957 Volume 23 Issue 130 Pages 345-346
Published: June 25, 1957
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSDownload PDF (419K) -
Keiji OKUSHIMA, Shukichi NAGATOMI, Kitao OKUSA1957 Volume 23 Issue 130 Pages 347-353
Published: June 25, 1957
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSThe ordinary testing methods of carbide tool are apt to be only hardness test of carbide, in spite of consuming many time and material. In this article, however, we report that the two fundamental causes of carbide tool failure, "chipping" and "cratering", are accelerated independently of each other by a moderate intermittent cutting and a high feed cutting respectively. Applying this principle, we can test the true value of carbide tool simply and select easily a suited grade for any given job.View full abstractDownload PDF (2699K) -
Keiji OKUSHIMA, Shukishi NAGATOMI, Kitao OKUSA1957 Volume 23 Issue 130 Pages 354-359
Published: June 25, 1957
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSBoston and others have introduced the mean value of flank wear 0.03" as a reasonable designation for tool life. But our experiments show that the critical value of flank wear is not always constant and therefor it should be controlled by the kind of carbide tool, material cut, cutting condition and tool design. Arranging our experimental data, we proposed a summary table of the critical value of flank wear.View full abstractDownload PDF (2129K) -
Akira IWAKI, Masaki MORI1957 Volume 23 Issue 130 Pages 360-365
Published: June 25, 1957
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSWe have considered one of their factors to find out the mechanism of generating surface roughness, that is, replica on the finished surface by roughness of the cutting edge. In order to estimate the degree of replica we use multiple correlation coefficient, ri·18 and ri·12…i-1 ; in Fig. 4 R1 is the roughess of the edge before cutting, R8 is that of after cutting and R2, ……, R7 are those of the surfaces at six sorts of cutting depth in axial direction. In the results the deeper the surface is cut, the rougher its profile becomes and the degree standardized by roughness of edge is in proportion to their Brinell hardness. While replica is better in oil cutting than in dry and the order for these materials is the folloming ; -brass, copper, mild steel, hard steel, and cast iron. Also cutting depth at maximum value of ri·12…i-1 is most suitable one for the material because ri·12…i-1 means stability of generating roughness.View full abstractDownload PDF (790K) -
Akira IWAKI, Masaki MORI1957 Volume 23 Issue 130 Pages 365-370
Published: June 25, 1957
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSWe have subsequently considered after-effect of initial roughness on the finished surface. Primarily the projections of the small screws of the five sorts of material as a model of roughness are cut by a straight lapped edge and then the forms at the cut points are observed. Secondarily the rough eurface of the same material is cut in the same way and the profiles after finishing are compared with those before finishing with singular correlation coefficient, γ. All these coefficients are lower than the coefficient, ρ in the case of geometrical cutting and this is concerned with result in model experiment. It is caused by pressing effect in shallow range and by built up edse in deep range, So a coefficient |ρ-γ|/(1-ρ) is convenient to estimate the after-effect. It varies accordins to material, cutting condition and gradually begins to vanish with the depth oner height of roughness.View full abstractDownload PDF (828K) -
Akira IWAKI, Masaki MORI1957 Volume 23 Issue 130 Pages 370-376
Published: June 25, 1957
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSWe have also considered the internal factor of generating roughness. One is abnormal roughness accompanying the built-up edge. In estimating it the partial correlation coefficient ri i+1-18 is used in order to get rid of the effect of roughness of edge from two adjoining profiles. Similarity of forms of generating built-up edge is more remarkable in oil cutting and shallow cutting. The order is the following ; -copper, brass, mild steel, hard steel, and cast iron. The other is auto-generating roughness which has certain characteristic waves in its profile according to the material. Correlogram and spectrum density are used to estimate them. Copper has only a non-periodic component, brass and hard steel have each one kind of wave, mild steel and cast iron have respectively two kinds of wave. It is caused by lack of uniformity in strength and size of the crystal grains.View full abstractDownload PDF (979K) -
Junichiro KUMABE1957 Volume 23 Issue 130 Pages 376-381
Published: June 25, 1957
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSThe cutting force of the small diameter drill is not reported, although it is a very important factor in the study on its cutting performance. So, the auother devised a dynamometer for this very small torque and thrust to the constant feed of the spindle. By using this dynamometer, the small cutting force, the torque 0.008 cm-kg, the thrust 0.2 kg of 0.2 mmφ drill can be measured at the same time. At first, the mechanism of this dynamometer is described and by using this dynamometer, it has been found that the work-hardning of the surface which is caused by the machining depends on the cutting force, especially the thrust, and this work-hardning is a factor of the cutting performance, and the recipro-machining with a sand paper is preferable to the finish machining.View full abstractDownload PDF (1145K) -
Junichiro KUMABE1957 Volume 23 Issue 130 Pages 381-386
Published: June 25, 1957
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSThe torque and thrust of the 0.3∼2.0 mmφ drill of the brass, mild steel, duralumin, or copper were measured and certain empirical formulas have been obtained. And it was revealed that the rese of a cutting fluid of C Cl4 reduced, the cutting force of the mild steel by about 20∼40% of the dry cutting.View full abstractDownload PDF (669K) -
Akira YAGI1957 Volume 23 Issue 130 Pages 386-390
Published: June 25, 1957
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSThe carbon content of the tyre tested is about 0.69% and that of the rail, which engages with the tyre is three kinds-0.53%, 0.71% and 0.08%. The test was conducted for two different cases, i. e. Case 1. Both rail and tyre are not hardened. Case 2. One of them is hardened. And in each case the test was conducted under two different conditions-with and without lubrication, using an Amsler-type abrasion testing machine. The following are the findings resulted from the present test : 1) When neither of rail nor tyre is treated, the test under dry condition has revealed that if the carbon content of rain exceeds that of tyre, the degree or mutual defacement is samall. 2) When either rail or tyre whose carbon content is higher than the other is hardened, the test under dry condition has revealed that the hardening effect somewhat increases over the original state. 3) Under lubrication, if either rail or tyre is hardened, the effect is so remarkable in all combination.View full abstractDownload PDF (732K) -
Matsuo MIYAGAWA1957 Volume 23 Issue 130 Pages 390-398
Published: June 25, 1957
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSA theoretical investigation of wrinkles arising in flange part during deep drawing of circular sheet metals is reported. In this case, we assumed the formula of wrinkles by a set of experiments on various drawing conditions and as a buckling problem of circular plate, the energy method wae used. The following items were found : For elastic and plastic wrinkling, the effect of blank holding force, rigidity of blank holding system, constraint at the part of draw-in (several die contour), drawing ratio, lubricant, material constants and thickness of sheet blank. And the critical condition of wrinkles was also discussed.View full abstractDownload PDF (1050K) -
Matsuo MIYAGAWA1957 Volume 23 Issue 130 Pages 399-407
Published: June 25, 1957
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSFor checking the validity of the proporsed theory, an experimental investigation of wrinkles arising in flange part during deep drawing of aluminium blanks is reported. The buckling deformation, number of wrinkles, critical and limited conditions of wrinkling were studied in case with and without blank holder by the use of spring respectively. In each case, the comparison of the experimental results with the theoretical predictions was found sastisfactory.View full abstractDownload PDF (1060K) -
Matsuo MIYAGAWA1957 Volume 23 Issue 130 Pages 407-411
Published: June 25, 1957
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSA theoretical investigation of wrinkles arising in conical flange part during deep drawing of circular sheet blanks by means of conical formed die without blankholder is reported. In this case, we assumed the formula of wrinkles arising in deformed conical shell and as a buckling problem of conical shell the energy method was used. The critical wrinkling condition in terms of the ratio (thickness of blank)/(drawing diameter) was determined, by purely theoretical means, if the cone angle of the die, material constants of sheet metal blank, drawing ratio and lublicant were given. And further more, it was found possible to predict the similarity for wrinkling limit.View full abstractDownload PDF (627K) -
Matsuo MIYAGAWA1957 Volume 23 Issue 130 Pages 412-415
Published: June 25, 1957
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSAn experiment of wrinkling arising during deep drawing by the use of conical formed die without blank holder is presented. A remarkable agreement of the theoretical predictions with the experimental results was obtained. The similarity law for critical value (h/dd)cr was also made clear upon comparing this experimenta1 results with the report by Messrs. KAGEURA and KUDO.View full abstractDownload PDF (909K) -
Matsuo MIYAGAWA1957 Volume 23 Issue 130 Pages 415-421
Published: June 25, 1957
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSFrom the theory on wrinkling of deep drawing using flat die already stated, the author found it possible to describe a general consideration on blank holding by the use of a rigid pressure plate. And the mechanism of formation of wrinkles was considered as following three cases ; i) The special proposed can of blank holding by the use of spring, ii) The blank holding fixed with a clearance larger than the thickness of blank between die and pressure plate, iii) The case of blank holding by the variable pressure during deep drawing process.View full abstractDownload PDF (892K) -
Mahito KUNOGI1957 Volume 23 Issue 130 Pages 421-426
Published: June 25, 1957
Released on J-STAGE: March 28, 2008
JOURNAL FREE ACCESSThe cold backward extrusion process was applied to the pressing of low carbon steels or JIS S 10 C and S 20 C, used for mechanical construction, and was compared with the forming process of aluminium, copper and their alloys. As to measurement, the new types of the load dynamometer and displacement measuring device utilizing electric resistance wire were laid out and, load and stroke of the punch were measured simultaneously without the aid of the electric amplifier. Then relation between maximum load and area reduction, effect of working velocity, and hardness distribution of extruded shells were obtained in this process.View full abstractDownload PDF (991K)
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