Journal of the Japan Society of Precision Engineering
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Volume 35, Issue 413
Displaying 1-12 of 12 articles from this issue
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  • [title in Japanese]
    [in Japanese]
    1969 Volume 35 Issue 413 Pages 345-351
    Published: June 05, 1969
    Released on J-STAGE: June 30, 2009
    DOIhttps://doi.org/10.2493/jjspe1933.35.345
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese]
    1969 Volume 35 Issue 413 Pages 352-359
    Published: June 05, 1969
    Released on J-STAGE: June 30, 2009
    DOIhttps://doi.org/10.2493/jjspe1933.35.352
    JOURNAL FREE ACCESS
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    [in Japanese]
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  • A Trial-made Disc Type Chemical Polishing Machine
    Chemical Polishing of GaAs (I)
    Shigeyuki IIYAMA, Ichiro IDA, Shun'ichi FURUMOTO
    1969 Volume 35 Issue 413 Pages 360-366
    Published: June 05, 1969
    Released on J-STAGE: June 30, 2009
    DOIhttps://doi.org/10.2493/jjspe1933.35.360
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    In order to find out the mirror-finish conditions for GaAs with non-damage, which is used for semiconducting devices in ultra high frequencies with very high speeds, a disc type chemical polishing machine being made trially, improvement in flatness is pursued from viewpoints of the machine motion and of the properties of polishers and the surfaces produced by Br2--methanol solution are estimated. The results obtained are as follows : (1) Macrogeometric asperities are not removed by chemical polish in dipping, regardless of the disappearance in microgeometric roughness. (2) Flatness is no more than several microns with a cloth polsher, though roughness of about 0.01 μ is obtained. (3) Flatness is improved up to about 1 μ with mirror finish, when used a cloth phenolic laminated sheet made polisher having V-grooved checkers patterns on its surface. (4) Scratchings axe exposed, and etch pits are produced on {111} face, unless the concentration of the solution is reduced to 0.0025%.
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  • Rolling Error of Gyrocompass caused by Movement of Vertical Ring
    Shin-ichi KAWADA
    1969 Volume 35 Issue 413 Pages 367-372
    Published: June 05, 1969
    Released on J-STAGE: February 16, 2010
    DOIhttps://doi.org/10.2493/jjspe1933.35.367
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    Theoretical and experimental discussion is made for rolling error of gyrocompass caused by the movement of the vertical ring. This paper intends to clarify a condition necessary to eliminate the error, and to obtain a formula suitable for practical use to calculate the error. In this paper, by solving equation of motion of the vertical ring, assuming it as a solid body with a fixed point, it is clarified that, the moment of inertia of the gyro case around the spin axis (IR) is concerned with the error along with the moment of inertia of the vertical ring around the north-south axis (Ix) and that around the east-west axis (Iy), and the condition of eliminating the rolling error is Ix+IR=Iy The result of an experiment to confirm the principle is also attached. And the formula to calculate the rolling error is obtained from the equation of motion of the vertical ring.
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  • On Cutting Stiffness
    Analysis of Dynamic Characteristic in Metal Cutting (Ist Report)
    Hidehiko TAKEYAMA, Okitsugu SAKATA
    1969 Volume 35 Issue 413 Pages 373-377
    Published: June 05, 1969
    Released on J-STAGE: June 30, 2009
    DOIhttps://doi.org/10.2493/jjspe1933.35.373
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    In order to understand the mechanism of chatter vibration in metal cutting and control it properly, realization of the dynamic characteristic of cutting area is also essential. The findings through this study are that if the stiffness of a tool is comparable with the cutting stiffness the latter makes an appreciable difference in frequency, and the frequency increases as the feed rate decreases because of non-linear characteristic of the relation between the cutting force and the feed rate in the region of smaller feeds. With an increase of depth of cut, the frequency increases as predicted by the equation derived from a simplified model. This apparently indicates that the dynamic characteristic of chip producing zone plays a very important role in chatter vibration.
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  • Study of Oxide-Layer Adhered on Tool Surface When Machining Ca-Deoxidized Steel (Report 2)
    Keiji OKUSHIMA, Norihiko NARUTAKI
    1969 Volume 35 Issue 413 Pages 378-381
    Published: June 05, 1969
    Released on J-STAGE: February 16, 2010
    DOIhttps://doi.org/10.2493/jjspe1933.35.378
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    The effective range of cutting speed in which a special protective layer is formed on the tool face and prevents tool wear was studied when machining Ca-Si deoxidized steels. The correlation of the composition and location of the adhered layer with the tool wear was also investigated. From the result of the experiment, the following facts were clarified.
    At the flank surface of the tool, a layer mainly consisting of CaO, Al2O3, and SiO2 is formed at the cutting speeds of 150 m/min and above. On the contrary, the layer formed at lower cutting speeds mainly consists of MnS and SiO2. Both layers prevent the tool wear effectively. However, if the tool-life criterion is determined too small, the tool life sometimes becomes short when machined at the speed range between 150 and 210 m/min.
    The behaviour of the layer at the rake face is similar to that at the tool flank, and in a higher speed range the layer seems to have such composition and structure as 2CaO·Al2O3- SiO2, which locates at the trailing half of the chip-tool contact zone. At an extremely high cutting speed, the crater wear advances quickly before the protective layer is formed. Therefore, the cutting speed at which the layer acts effectively has an upper limit from the view point of tool life.
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  • Study on Electrolytic Superfinishing
    1st Report : Electrolytic Superfinshing with Trially Made Resinoid Bonded Wheels
    Koichi SERYO, Kiyoshi NISHIMOTO
    1969 Volume 35 Issue 413 Pages 382-388
    Published: June 05, 1969
    Released on J-STAGE: June 30, 2009
    DOIhttps://doi.org/10.2493/jjspe1933.35.382
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    In this paper, the applicability of electrically conductive MP2 wheel and trially made resinoid bonded wheels to electrolytic superfinishing is studied, the latter wheel consists of perforated nonconductive grinding portion and conductive portion. Heat-treated bearing steel and a 5 per cent potassium chloride aqueous solution were respectively used as the test piece material and electrolyte.
    The results obtained are as follows.
    1) In the electrolytic superfinishing with MP2 wheel, the Faraday current efficiency of the electrolytic part of the process was found to be only 20 per cent.
    2) With trially made resinoid bonded wheels, the Faraday current efficiency was found to be almost 100 per cent for various abresive pressures and wheel thicknesses. The roughness of finished surface was not varied so much by the electrolytic current intensity.
    3) With trially made wheels, the grinding action and electrolytic action can be controlled independently.
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  • Dynamic Analysis of Grinding Force Dynamometer
    Dynamics and Design of Dynamometer (The 1st Report)
    Susumu SHIOZAKI, Masakazu MIYASHITA
    1969 Volume 35 Issue 413 Pages 389-395
    Published: June 05, 1969
    Released on J-STAGE: June 30, 2009
    DOIhttps://doi.org/10.2493/jjspe1933.35.389
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    In the case of measuring a grinding force it is required to make clear not only the dynamic behaviour of the dynamometer itself, but also its influence upon the grinding system and then the fidelity of measurement as a whole system. It is preferable for getting the high fidelity of measurement that the instantaneous time history of the grinding depth of cut is not affected by the insertion of the dynamometer.
    Then in this paper, for the purpose of designing a dynamometer with such a dynamic rigidity as to make the influence on the grinding depth of cut sufficiently small it is analyzed how the grinding depth of cut changes in accordance with the varying force in the working system in cluding the dynamometer.
    And from these analyses, some fundamental formulae have been introduced and enabled the design of the dynamometer with the specified allowable error and frequency range for the measurement.
    This study treats only the grinding force dynamometer inserted into the work support system, but these results obtained here can be applied to the cutting force dynamometer, too.
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  • Erratum to : Estimation of Wear Process of Grinding Wheels
    1969 Volume 35 Issue 413 Pages 395
    Published: 1969
    Released on J-STAGE: November 19, 2010
    DOIhttps://doi.org/10.2493/jjspe1933.35.413_395
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  • Motion of Deformation of the Thin Plate under Uniform Lateral Impact
    Shiro IZUMI, Masato SAKATA
    1969 Volume 35 Issue 413 Pages 396-404
    Published: June 05, 1969
    Released on J-STAGE: June 30, 2009
    DOIhttps://doi.org/10.2493/jjspe1933.35.396
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    This is a paper on the High-Energyrate-Forming of metal pleta, on the ground of the Tensile-Resistance-Theory. According to the result of the new studies, putting 2δ0/UT=μ, where δ0 : the plate thickness, U : the accquired velocity after the impact, and T : the duration time of the impact force, the problem belongs to the domain of the tensile-resistance-theory if μ<1, the common domain of the tensile-and-bending-resistance-theory if μ>1 but not >>1, and to the domain of the shearing-resistance-theory if δ0 is very great and μ>>1. Thus the bendingresistance-theory is restricted in the very narrow domain where δ0 is not too great and μ>>1. The fact that the Tensile-Resistance-Theory regulates the phenomenon in question when μ<1, means that the plate becomes flexible laterally under the same condition. If the Explosion-Forming treats easily the materials brittle and difficult to form, it may be mostly due to this flexibility-making-effect.
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  • [title in Japanese]
    [in Japanese]
    1969 Volume 35 Issue 413 Pages 405-410
    Published: June 05, 1969
    Released on J-STAGE: June 30, 2009
    DOIhttps://doi.org/10.2493/jjspe1933.35.405
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese]
    1969 Volume 35 Issue 413 Pages 411-417
    Published: June 05, 1969
    Released on J-STAGE: June 30, 2009
    DOIhttps://doi.org/10.2493/jjspe1933.35.411
    JOURNAL FREE ACCESS
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