A Study on Chip Breaker

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  • チップブレーカの研究
  • チップブレーカ ノ ケンキュウ

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Abstract

Limiting conditions of chip breaking with a parallel type chip breaker are found to be determined by only the following three items : the radius of chip flow circle, the material to be cut and the thickness of chip. The larger the radius of chip flow circle, the steeper the slant of chip breaker and the thinner the chip, the smaller is the force acting on a chip breaker due to chip curling. The yield stress of chip becomes about twice that of the same material before cut. From these results, a very simple method for finding the optimum shape of chip breaker is established. In this method, a proper radius of chip flow circle is found directly by measuring the thickness of chip which is obtained under the given cutting conditions and by the use of a diagram presented in this paper.

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