被削材端部の形状による影響 : 断続切削時の初期欠損(第1報)

概要

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Chipping of a cutting tool is one of the most serious problems in milling operation. The mechanism of initial chipping is not sufficiently clarified. This report analyzes the origin of initial chipping by separating the cutting edge into entry and exit zone. Initial chipping is observed only on the exit zone and the cumulative probability shows a Weibull distribution. The chipping generated on the exit zone is affected by the end form of the chip. That is, generating boot-stype chip, chipping is generated, but with a spindle-type chip, chipping is not generated. The chip form is affected by the end shape of the workpiece and the shape affects the magnitude of the negative shear zone. Finally chipping is affected by the negative shear forces caused by the negative shear. Simultaneous cutting of soft and hard metal decreases chipping probability, because this setting decreases the negative shear forces.
公益社団法人精密工学会の論文
1984-09-05