Journal of the Japan Society of Precision Engineering
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Volume 24, Issue 280
Displaying 1-7 of 7 articles from this issue
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  • [title in Japanese]
    [in Japanese]
    1958 Volume 24 Issue 280 Pages 271-274
    Published: June 05, 1958
    Released on J-STAGE: June 30, 2009
    DOIhttps://doi.org/10.2493/jjspe1933.24.271
    JOURNAL FREE ACCESS
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  • Measurement of Surface Roughness by the "Revolution Analysing Camera"
    T.INOUE
    1958 Volume 24 Issue 280 Pages 275-278
    Published: June 05, 1958
    Released on J-STAGE: June 30, 2009
    DOIhttps://doi.org/10.2493/jjspe1933.24.275
    JOURNAL FREE ACCESS
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    We have already described our "revolution analysing camera" for studying the motion of revolving bodies. Now it was ascertained that it might be used as a roughness-gauge of metal surfaces as well. The theory and the method of measurement were explained.
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  • On Centerless Grinding (II)
    Analysis of Damping Ratio
    [in Japanese], [in Japanese]
    1958 Volume 24 Issue 280 Pages 279-283
    Published: June 05, 1958
    Released on J-STAGE: May 07, 2010
    DOIhttps://doi.org/10.2493/jjspe1933.24.279
    JOURNAL FREE ACCESS
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    In this paper, condition satisfying Φ=0 is analysed theoretially by using constant difference equation. And the relation between the damping ratio of the out-of-roundness and the working condition is discussed.
    The results obtained are as follows :
    (1) The results about the number of corners of the out-of-roundness is the same with those obtained in the preceding paper. That is, when the center-height of the work is comparatively low, a polygon of odd number of corners is apt to be formed, and as the work is supported higher, a polygon of even number of corners comes to appear frequently.
    (2) To obtain the maximum damping ratio 1-(ε'+ε), the even number of corners ne must satisfy the following relation,
    ne=2[(2K2+1)K+K2+1]
    here, ∠GOB=p1ρ, ∠GOC=p2ρ and p1=2K1+1, p2=2K2+1, K=1, 2, …in Fig 1.
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  • Application of the Microinterferometry
    On the Measuring Method of Rockwell Diamond Indentors (2 nd report)
    Kentaro YAMAMOTO
    1958 Volume 24 Issue 280 Pages 283-287
    Published: June 05, 1958
    Released on J-STAGE: June 30, 2009
    DOIhttps://doi.org/10.2493/jjspe1933.24.283
    JOURNAL FREE ACCESS
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    A micro-interferometer of Linnik type with spherical reference mirror of the radius of 0.2 mm was designed in our laboratory for inspecting the form of the spherical tip of diamond indentors used in Rockwell hardness testing (Fig. 2). The optical system of the micro-interferometer is illustrated in Fig. 4. For the spherical mirror an accurately finished steel ball was adopted, and fine setting of the center of the steel ball on the optical axis of the objective was done by applying the method of microscopic collimation reported by the author in the previous report.
    Fig. 8 shows some examples of the interferograms taken by the micro-interferometer the frings of which not only cover the whole spherical part of the diamond tip but also indicate the form error in detail while the interferogram taken by the ordinary microinterferometer with plane reference mirror covers only one third of the range necessary for the prescribed form of the indentors.
    The convex and concave parts on the surface of the indentors compared with the spherical mirror with radius of 0.2 mm can be detected by observing the change of the fringes as the cone is displaced slightly along the optical axis of the objective. An example of the deviation of the cross-section of the diamond tip from the accurate sphere of 0.2 mm in radius is illustrated in Fig. 9.
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  • [title in Japanese]
    [in Japanese]
    1958 Volume 24 Issue 280 Pages 288-291
    Published: June 05, 1958
    Released on J-STAGE: June 30, 2009
    DOIhttps://doi.org/10.2493/jjspe1933.24.288
    JOURNAL FREE ACCESS
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    [in Japanese]
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  • [title in Japanese]
    [in Japanese]
    1958 Volume 24 Issue 280 Pages 292-298
    Published: June 05, 1958
    Released on J-STAGE: June 30, 2009
    DOIhttps://doi.org/10.2493/jjspe1933.24.292
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    1958 Volume 24 Issue 280 Pages 300-302
    Published: June 05, 1958
    Released on J-STAGE: June 30, 2009
    DOIhttps://doi.org/10.2493/jjspe1933.24.300
    JOURNAL FREE ACCESS
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