Journal of the Japan Society of Precision Engineering
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Volume 22, Issue 259
Displaying 1-8 of 8 articles from this issue
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  • [title in Japanese]
    [in Japanese]
    1956 Volume 22 Issue 259 Pages 369-376
    Published: September 05, 1956
    Released on J-STAGE: June 30, 2009
    DOIhttps://doi.org/10.2493/jjspe1933.22.369
    JOURNAL FREE ACCESS
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  • Corrosion Resistance of Electropolished Brass
    Tadao TUTUI
    1956 Volume 22 Issue 259 Pages 377-379
    Published: September 05, 1956
    Released on J-STAGE: June 30, 2009
    DOIhttps://doi.org/10.2493/jjspe1933.22.377
    JOURNAL FREE ACCESS
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    It is said that concerning corrosion resistance the electrolytically polished surface is generally superior to the mechanically polished surface. So we used the pieces of 60:40 brass as specimens, some of which were electrolytically polished in an orthophosphoric acid bath (H3PO4: 200cc, CrO3: 6g) and others mechanically polished with emery papers. We immersed these specimens in corrosive solution, measured the weight loss (mg/cm2) in every constant period, and compared the two kinds of polished surfaces in their corrosion resistance.
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  • Lapping of Overtone Quartz Oscillator-Plates Part II
    Plane parallel lapping
    Ichiro IDA, Yuzo ARAI
    1956 Volume 22 Issue 259 Pages 380-386
    Published: September 05, 1956
    Released on J-STAGE: June 30, 2009
    DOIhttps://doi.org/10.2493/jjspe1933.22.380
    JOURNAL FREE ACCESS
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    It was reported that the lapping for overtone quartz oscillator-plates should be done by "Plane parallel lapping". The present paper describes the general construction and the experiments on the newly designed (1) "Multiple Crystal Finisher" and (2) "Diaphragm Lap".
    The characteristics of these two laps are as follows:
    (1) (a) Revolution is separated from rotation in the lapping motion of the carrier (workholder),
    (b) The size of the carrier is less than one quarter of that of the conventional one,
    (c) The minimum thickness lapped with high parallelism is 0.08mm,
    (2) (a) The carrier is constantly given tension over the whole surface.
    (b) The "Lap Set" including the carrier above-mentioned is easily combined with an ordinary "Drill Press Lap".
    (c) The minimum thickness lapped with high parallelism is 0.06mm.
    Thus, 4060Mc overtone quartz oscillator-plates have been developed, and have come to be used in the microwave repeater stations between Tokyo and Sendai.
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  • Studies on Flat Superfinishing (Part 2)
    On the Stock Removal of Flat Superfinishing-experimental
    Seiki MATSUI
    1956 Volume 22 Issue 259 Pages 387-390
    Published: September 05, 1956
    Released on J-STAGE: June 30, 2009
    DOIhttps://doi.org/10.2493/jjspe1933.22.387
    JOURNAL FREE ACCESS
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    In the previous paper, the author presented an analytical formula for the stock removal of flat superfinishing.
    In this paper, to confirm this formula, the effect of flat superfinishing wheels (the abrasives, the grain size and the wheel grade), operating conditions (the pressure, the maximum inclination angle and the mean superfinishing velocity) and work materials on the stock removal of flat superfinishing are investigated experimentally.
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  • Geometrical Analysis of the Twist Drill Points (2)
    The points ground to the inverted conical surfaces as well as cylindrical surfaces
    Masasuke TSUEDA, Yoshio HASEGAWA
    1956 Volume 22 Issue 259 Pages 391-396
    Published: September 05, 1956
    Released on J-STAGE: February 16, 2010
    DOIhttps://doi.org/10.2493/jjspe1933.22.391
    JOURNAL FREE ACCESS
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    Following the first report, which showed an analysis of the points ground to the normal conical surfaces, the present report describes the analysis of the points having inverted conical surfaces as well as cylindrical surfaces. Comparisons between these three types of points are made on various examples.
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  • Dynamical Rigidity of Sliding Bearings. (Report 3)
    The Angle of Deflection of Rotating Shaft Due to Fluctuating Loads
    T. SASAKI, T. INOUE
    1956 Volume 22 Issue 259 Pages 396-398
    Published: September 05, 1956
    Released on J-STAGE: June 30, 2009
    DOIhttps://doi.org/10.2493/jjspe1933.22.396
    JOURNAL FREE ACCESS
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    The dynamical rigidity of sliding bearings was studied by using the improved special camera for analysing rotating bodies, and the effects of the amount of clearance, the viscosity of lubricants, the magnitude of loads, the number of revolutions and the length of bearings upon the angle of deflection of rotating shaft due to fluctuating loads were considered.
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  • [title in Japanese]
    [in Japanese]
    1956 Volume 22 Issue 259 Pages 399-402
    Published: September 05, 1956
    Released on J-STAGE: June 30, 2009
    DOIhttps://doi.org/10.2493/jjspe1933.22.399
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    1956 Volume 22 Issue 259 Pages 406-408
    Published: September 05, 1956
    Released on J-STAGE: June 30, 2009
    DOIhttps://doi.org/10.2493/jjspe1933.22.406
    JOURNAL FREE ACCESS
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