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Volume 20, Issue 234
Displaying 1-8 of 8 articles from this issue
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[in Japanese]1954 Volume 20 Issue 234 Pages 325-330
Published: September 05, 1954
Released on J-STAGE: February 16, 2010
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Tsuneo NAKAMURA1954 Volume 20 Issue 234 Pages 331-335
Published: September 05, 1954
Released on J-STAGE: June 30, 2009
JOURNAL FREE ACCESSThe plane polarized light was made incident on test pieces and polarization of regularly reflected beams was measured. The position of principal axis of elliptically polarized light was observed by a λ/4 plate and an analyser, and the ellipticity was measured by means of the half-shade methods. From the results of these observations the orientation angles were calculated. Test pieces of rough surfaces were steel, copper, and glass plates ground by various kind of alandum powder, and the surfaces of glass plates were evaporated with Al and Cu.
From the experiment it was found that the ellipticity (the orientation angle) of the reflected light was changed in proportion to surface roughness. As for the evaporated glass surfaces, assuming that diffuse reflections of lights were attributed to the lights reflected regularly from inclined surface elements, we calculated the orientation angle as a function of incident angle of light, basing on the electromagnetic theory. Curves thus obtained coincided with those obtained experimentally. Therefore it is concluded that the above assumption is correct.View full abstractDownload PDF (671K) -
[in Japanese]1954 Volume 20 Issue 234 Pages 336-339
Published: September 05, 1954
Released on J-STAGE: February 16, 2010
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[in Japanese]1954 Volume 20 Issue 234 Pages 340-344
Published: September 05, 1954
Released on J-STAGE: June 30, 2009
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-Cutting Force-Fusao HAYAMA1954 Volume 20 Issue 234 Pages 345-349
Published: September 05, 1954
Released on J-STAGE: June 30, 2009
JOURNAL FREE ACCESSBy measuring cutting Forces in case of cutting rolled Pb-brass, A (cutting force at the unit depth of cut) and n in the experimental equation R= atn (R= cutting force, t= depth of cut) were calculated. The results are ;
1) The difference between cutting forces, Whether it is parallel or rectangular to the direction of rolling, was scarcely notable.
2) The effect of Pb on cuting force is very large, but the effect on rolling reduction is not so remarkable.
3) Mono-phase alloys of α or β are hard to be cut and the standard structure of 4:6 brass. (α+β) is easy to be cut.
4) The value of n is small in the cases of Pb-brass and high reduced plate, and α-brass and β-brass confer high values.View full abstractDownload PDF (804K) -
Researches on the Abrasive-Cutting-off of Plastics, Part 4Akira KOBASHI1954 Volume 20 Issue 234 Pages 349-356
Published: September 05, 1954
Released on J-STAGE: February 16, 2010
JOURNAL FREE ACCESSIt is the purpose of the present research to find how the grain acts as an element of a wheel in th case of abrasive cutting-off of phenolic laminated resins, by measuring the velocity, grinding force and the scratch force of single grain under various loads and also by performing the turning test using single grain under various conditions.
From these experiments, it may be assumed that the grain performs the cuting by a ball when the depth of cut is small, while in deeper cutting it does the cutting by a cone with conical angle of 120°-140°. Therefore it is considered that a wheel which is a collection of grains has two different cutting actions corresponding to depth of cut as above-mentioned.View full abstractDownload PDF (1267K) -
[in Japanese]1954 Volume 20 Issue 234 Pages 357-362
Published: September 05, 1954
Released on J-STAGE: June 30, 2009
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1954 Volume 20 Issue 234 Pages 367-369
Published: September 05, 1954
Released on J-STAGE: June 30, 2009
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