Journal of the Japan Society of Precision Engineering
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Volume 25, Issue 291
Displaying 1-8 of 8 articles from this issue
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  • [title in Japanese]
    [in Japanese], [in Japanese]
    1959 Volume 25 Issue 291 Pages 171-180
    Published: April 05, 1959
    Released on J-STAGE: February 16, 2010
    DOIhttps://doi.org/10.2493/jjspe1933.25.171
    JOURNAL FREE ACCESS
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  • Studies on Plunge-Cut Grinding (Part 3)
    The Effects of Mist Cooling
    Kenji SATO
    1959 Volume 25 Issue 291 Pages 181-188
    Published: April 05, 1959
    Released on J-STAGE: June 30, 2009
    DOIhttps://doi.org/10.2493/jjspe1933.25.181
    JOURNAL FREE ACCESS
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    The oil mist cooling was applied to plunge-cut grinding tests. The result obtained were as follows :
    1) Hardened high speed steel pieces were finished to mirror-like surfaces by spraying only 10 cc/min of soybean oil. Emulsion, kerosene were less effective. And water was not effective, though the workpiece remained cool.
    2) Grinding burn could be measured quantitatively by a reflexion method-the decreasing gradient of the rate of reflexion due to etching time.
    3) The grit-work contact temperature in grinding was calculated from the moving heat source theory of Jaeger, under the assumption that about 84% of the total grinding heat went into the workpiece. Though burnt surfaces by dry grinding showed. the temperatures. beyond 1000°C, the temperatures from the data of mirror-like surfaces by the oil mist grinding were almost 500°C.
    4) A mathematical formula relating between the wheel-work contact temperature and the grit-work contact temperature was presented. The latter can be calculated from the former which is easily measurable.
    5) According to the wear test, mirror-like surfaces were much more resistible than burnt surfaces.
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  • Automatic Control-following Machine using Vacunm Type Pneumatic-Hydraulic Control Element
    Norio TAKENAKA, Yuhei NARUSAWA
    1959 Volume 25 Issue 291 Pages 189-192
    Published: April 05, 1959
    Released on J-STAGE: February 16, 2010
    DOIhttps://doi.org/10.2493/jjspe1933.25.189
    JOURNAL FREE ACCESS
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    This paper describes the characteristics of automatic contour-following machine using vacuum type pneumatic-hydraulic control element.
    From the analysis of frequency-response method and accuracy test of this following machine, it is shown that a vacuum type system resembles to a pressure type in characteristics. This points out, therefore, vacuum type pneumatic-hydraulic control element can be used in actual following cutting operation the same as generally used pressure type element.
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  • Der Versuch der Herstellung des Mikrometers, das im Vakuumluftmikrometer begründet ist
    M. SUDA
    1959 Volume 25 Issue 291 Pages 193-197
    Published: April 05, 1959
    Released on J-STAGE: June 30, 2009
    DOIhttps://doi.org/10.2493/jjspe1933.25.193
    JOURNAL FREE ACCESS
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    Der Vakuumluftmikrometer im Vergleich mit dem Drückluftmikrometer ist besser mit den Eigenschaften der Hochsensibilität und des zwischen der Drückverändrung des Rückraumes und der Veränderung des Einatmungsmundstückflächenraumes weit greifenden Geradlinienverhältnisses.
    Mit der Benutzung von diesen Vakuumluftmikrometers-eigenschaften um die Messungen der Großen und der Rundheit der genaufertigen Maschinenteile sorgenlos zu messen hat das. hochsensibele Mikrometer hergestellt, und dazu hat es das gute Ergebniss bekommen.
    Der Bau des hergestellten Mikrometers besteht aus dem von der Luftidrückveränderung des Rückdrückraumes bewegenden Kolben, und der diese Kolbenbewegung nochmalig vergroßert sehenden Zeigerblattlehre.
    Beim diesen Mikrometer kann man die Veränderung des Einatmungsmundstückenraumabstände von den Zeigerblattlehrenskalalen im Bereich 016 Mikrons zwanzigtausendfach vergroßert lessen, und seitdem die Genauigkeit des Mikrometers wird von dem Vergleich mit dem von johansonfabrik hergestellten 1 Mikron stufigen Endmaß auf 0.083 Mikron sich vergewißt.
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  • Dynamical Characteristics of Lathes (7th Report)
    T. INOUE
    1959 Volume 25 Issue 291 Pages 198-201
    Published: April 05, 1959
    Released on J-STAGE: June 30, 2009
    DOIhttps://doi.org/10.2493/jjspe1933.25.198
    JOURNAL FREE ACCESS
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    From the motion of the work, the dynamical characteristics of lathes were studied, using 4-jaw chucks. The effect of the side rakes and the form of tips of cutting were also considered.
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  • [title in Japanese]
    [in Japanese], [in Japanese]
    1959 Volume 25 Issue 291 Pages 202-208
    Published: April 05, 1959
    Released on J-STAGE: June 30, 2009
    DOIhttps://doi.org/10.2493/jjspe1933.25.202
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    1959 Volume 25 Issue 291 Pages 209-228
    Published: April 05, 1959
    Released on J-STAGE: June 30, 2009
    DOIhttps://doi.org/10.2493/jjspe1933.25.209
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    1959 Volume 25 Issue 291 Pages 232-234
    Published: April 05, 1959
    Released on J-STAGE: June 30, 2009
    DOIhttps://doi.org/10.2493/jjspe1933.25.232
    JOURNAL FREE ACCESS
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