金属切削過程で生ずる異方性とその効果

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タイトル別名
  • Anisotoropy Produced in Metal Cutting Process
  • キンゾク セッサク カテイ デ ショウズル イホウセイ ト ソノ コウカ

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抄録

By making huge chips of a-brass using a material testing machine, anisotropy in metal cutting process is investigated.<BR>The results of experiments are summalized as follow : <BR>1. The theory of anisotropy due to R. Hill is verified to be in good conformity with the experimental results.<BR>2. Relative direction of the anisotropy axis, which is in the plane of flow, to the direction of maximum shear strain rate varies from -45° to 45° during chip forming process, while the directions of maximum shear strain rate and maximum shear stress are almost in coincidence during the process. The angle η' between the both directions varies ±1 degree at most.<BR>3. In spite of produced anisotropy, research works presented hitherto based upon the so-called shear plane model appear to be still appropriate because of η'=0 unless the shear stress on the shear plane is discussed. However, any stress analysis with isotropic theory will be not fruitful due to the large anisotropy.<BR>4. The cutting model proposed by M.C. Shaw may be explained by the effect of anisotropy. However, it will be not much useful due to the small value of η'.

収録刊行物

  • 精密機械

    精密機械 38 (446), 268-274, 1972

    公益社団法人 精密工学会

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