Journal of the Japan Society of Precision Engineering
Print ISSN : 0374-3543
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Volume 24, Issue 275
Displaying 1-8 of 8 articles from this issue
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  • [title in Japanese]
    [in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
    1958 Volume 24 Issue 275 Pages 2-38
    Published: January 05, 1958
    Released on J-STAGE: June 30, 2009
    DOIhttps://doi.org/10.2493/jjspe1933.24.2
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese]
    1958 Volume 24 Issue 275 Pages 39-49
    Published: January 05, 1958
    Released on J-STAGE: June 30, 2009
    DOIhttps://doi.org/10.2493/jjspe1933.24.39
    JOURNAL FREE ACCESS
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  • Dynamical Rigidity of Taper Roller Bearings
    T. SASAKI, T. INOUE
    1958 Volume 24 Issue 275 Pages 50-53
    Published: January 05, 1958
    Released on J-STAGE: June 30, 2009
    DOIhttps://doi.org/10.2493/jjspe1933.24.50
    JOURNAL FREE ACCESS
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    Continuing the previously published research on sliding bearings, the authors have studied the dynamical rigidity in the case of the combination of fwo taper roller bearings.
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  • Simple Method for Calculating Torque Curve ofSpiral Spring and Matters Connected with it
    Shoichi KAWANAGO
    1958 Volume 24 Issue 275 Pages 53-56
    Published: January 05, 1958
    Released on J-STAGE: February 16, 2010
    DOIhttps://doi.org/10.2493/jjspe1933.24.53
    JOURNAL FREE ACCESS
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    Various expressions with reference to torque of spiral spring had been studied. But its effective number of turn was unknown or the graphical method to compute it was subtle for industrial spring design.
    Author developed the method to draw torque curve by numerical calculations only, basing on Nishihara's plastic formula, and refered these results to experimental ones (Fig.2). From the calculation, also, the relations of torquel, or effective number of turn to spring length and thickness or arbor diameter are cleared up. (Fig. 3.4.5.6).
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  • Study on the Ultrasonic Turning (1st Report)
    Masami MASUKO, Junichiro KUMABE
    1958 Volume 24 Issue 275 Pages 56-60
    Published: January 05, 1958
    Released on J-STAGE: June 30, 2009
    DOIhttps://doi.org/10.2493/jjspe1933.24.56
    JOURNAL FREE ACCESS
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    An outline on the ultrasonic turning is described. In this report, Aluminum is machined by the ultrasonically vibrating bite (frequency 18.4kc, amplitude 5μ) brazed to the horn of the ultrasonic machine.
    The results are as follows;
    (1) It has been found that when the vibration is given in the perpendicular direction to the lathe bed, ultrasonic turning yields good results without the damage of the bite and other troubles.
    (2) At the higher cutting speed, we have also obtained a very smooth surface, owing to the small cutting force without having no built-up edge.
    (3) This method will be suitable for cutting long, slender and ductile metals easily deformable for the cutting resistance.
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  • Study on High Speed Machining (No. 16)
    Roughness of Machined Surface
    Hidehiko TAKEYAMA
    1958 Volume 24 Issue 275 Pages 61-66
    Published: January 05, 1958
    Released on J-STAGE: February 16, 2010
    DOIhttps://doi.org/10.2493/jjspe1933.24.61
    JOURNAL FREE ACCESS
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    Chip formation (chip-thickness ratio, shear angle, etc.), cutting force, effect of cutting speed, machinability of materials and tool life were analysed in the previous papers, based upon the machining theory of tool-chip contact area introduced by the author.
    Here in this report, surface finish which is one of the most important factors in machinability is discussed based upon the foregoing theory. The surface roughness focused on in this report is that in the direction of the feed marks, because it is more emphasized by the chip formation or the tool-chip contact area and more interesting theoretically than that perpendicular to the feed marks. The fundamental study to abstract the effect of tool-chip contact area upon the surface finish is conducted with tools of which tool-chip contact areas are restricted artificially as well as with normal tools
    On the basis of the theory, the effects of cutting speed, feed, tool face roughness and grinding direction of the tool face on the surface finish are experimentally examined. The set of experiments leads to the conclusion that tool-chip contact area per unit area of cut and feed (depth of cut in two-dimensional machining) controle the surface finish in the direction of the feed marks to a large extent ;the former affects the surface finish through the chip formation, and the latter does through the scale of rupture ahead the tool.
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  • [title in Japanese]
    [in Japanese]
    1958 Volume 24 Issue 275 Pages 67
    Published: January 05, 1958
    Released on J-STAGE: June 30, 2009
    DOIhttps://doi.org/10.2493/jjspe1933.24.67
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    1958 Volume 24 Issue 275 Pages 71-72
    Published: January 05, 1958
    Released on J-STAGE: June 30, 2009
    DOIhttps://doi.org/10.2493/jjspe1933.24.71
    JOURNAL FREE ACCESS
    Download PDF (433K)
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