Journal of the Japan Society of Precision Engineering
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Volume 21, Issue 250
Displaying 1-8 of 8 articles from this issue
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  • [title in Japanese]
    [in Japanese]
    1955 Volume 21 Issue 250 Pages 495-502
    Published: December 05, 1955
    Released on J-STAGE: February 16, 2010
    DOIhttps://doi.org/10.2493/jjspe1933.21.250_495
    JOURNAL FREE ACCESS
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  • On the Dial Guage acting on the Principle of Air Micrometer
    Shinichiro TAKEDA
    1955 Volume 21 Issue 250 Pages 503-509
    Published: December 05, 1955
    Released on J-STAGE: June 30, 2009
    DOIhttps://doi.org/10.2493/jjspe1933.21.250_503
    JOURNAL FREE ACCESS
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    The present paper describes the general construction and the experiments on the newly invented "Air-micro Dial Guage" acting on the principle of so-called air micrometer. The accuracy of the new guage is sufficiently high for the measurements of the deflection characteristics of diaphragm capsules and the thickness of soft materials. The errors are less than. 0.02 mm for the range of 15 mm and the measuring pressure is very weak (12 grwt).
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  • Temperature-rise of Workpiece during Metal Cutting (Part 1)
    Kazuo NAKAYAMA
    1955 Volume 21 Issue 250 Pages 509-513
    Published: December 05, 1955
    Released on J-STAGE: February 16, 2010
    DOIhttps://doi.org/10.2493/jjspe1933.21.250_509
    JOURNAL FREE ACCESS
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    In the first report on the tmperature rise of workpiece by heat generated in metal cutting, the most simple case of orthogonal cutting of tube by lathe was treated. By applying J. C. Jaeger's solution on the moving heat source, the general equation of the temperature rise was obtained. From this equation, an approximate equation on the surface temperature rise under the usual cutting condition was derived.
    In order to illustrate this equation, the surface temperature of the workpiece was measured by the method of "wokpiece-constantan wire thermocouple". The results indicated fairly good coincidence with the equation.
    The heat per unit area which flows into workpiece can be calculated by comparing the equation with the surface temperature rise measured. The effect of cutting speed on the heat was investigated by this method.
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  • On the Non-linearity of Watch Hairsprings (Part III)
    Yasujiro OSHIMA
    1955 Volume 21 Issue 250 Pages 513-519
    Published: December 05, 1955
    Released on J-STAGE: February 16, 2010
    DOIhttps://doi.org/10.2493/jjspe1933.21.250_513
    JOURNAL FREE ACCESS
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    In order to explain the experimental fact gained about the influence of the strain at the outer fixed point of the hairspring, reported in the part II, the author tried the theoretical analysis under the condition that the outer terminal of the spiral hairspring is fixed only by the stud.
    The results of the analysis are as follows:
    1) In the case of the direction of the eccentricity perpendicular or nearly perpendicular to the direction from the centr to the stud, the strain does scarcely influence upon the variation of the balance oscillation period in accordance with the amplitude.
    2) In the case of the direction of the eccentricity same with or contrary to the stud direction, that influece is the largest and in these two directions the influence is reversed.
    Also he added the experiments under the same condition with the analysis, and confirmed the above results.
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  • Erratum
    1955 Volume 21 Issue 250 Pages 519
    Published: 1955
    Released on J-STAGE: June 30, 2009
    DOIhttps://doi.org/10.2493/jjspe1933.21.250_519
    JOURNAL FREE ACCESS
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  • On the Effects of Temperature Change on Comparators, IV
    [in Japanese]
    1955 Volume 21 Issue 250 Pages 520-524
    Published: December 05, 1955
    Released on J-STAGE: June 30, 2009
    DOIhttps://doi.org/10.2493/jjspe1933.21.250_520
    JOURNAL FREE ACCESS
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    The writer investigated the inherent error response of a microlux corresponding to the periodic ambient temperature change. An experiment was performed in the controlled temperature box provided with a thermostat, and the different periods of temperature change were used.
    Accoding to the results, we can conclude that the time lag of the inherent error response is almost due to the shape or quality of the comparator stand and not to the period of ambient temperature changes.
    Furthermore, by means of a superposition of the solution above mentioned, we can conclude the time lag when the ambient temperature and the corresponding inherent reading error of the microlux become steady.
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  • [title in Japanese]
    [in Japanese]
    1955 Volume 21 Issue 250 Pages 525-529
    Published: December 05, 1955
    Released on J-STAGE: February 16, 2010
    DOIhttps://doi.org/10.2493/jjspe1933.21.250_525
    JOURNAL FREE ACCESS
    Download PDF (1565K)
  • [title in Japanese]
    1955 Volume 21 Issue 250 Pages 533-535
    Published: December 05, 1955
    Released on J-STAGE: June 30, 2009
    DOIhttps://doi.org/10.2493/jjspe1933.21.250_533
    JOURNAL FREE ACCESS
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