MODELING THE SHAPE OF TOOL WEAR DURING CUTTING OF THE COMPOSITE MATERIALS

Основний зміст сторінки статті

Gennadii Khavin

Анотація

The process of the shape changing for the tool cutting edge in relation to the initial state due to wear during cutting of polymer composite materials is
considered. Modern experimental achievements in the study of the nature of changes in microgeometry in the process of wear are analyzed. Based on
the analysis of experimental data, an assumption was made about a slight change in the initial rake angle and the rounding radius of the tool tip during
wear. On this basis, a conclusion was made about the one-parameter nature of the change in the geometry of the tool cutting edge in the process of
interaction with the composite. A model for removing the volume of material is proposed, which makes it possible to determine the total loss of weight
of the tool during the cutting process. The relationship between flank wear, dimensional wear and change in tool weight is shown. A geometric model
is used to determine weight loss. The proposed assumptions in the mathematical model are discussed. As a first approximation in the calculations, a
simplified definition of the worn area near the tool tip is proposed. A generalized algorithm for step-by-step calculation of the tool tip geometry and
the inverse problem of weight loss during operation are considered. As a law of wear, it is proposed to use a hereditary aging model that links
volumetric wear with the physical characteristics of interacting bodies and technological processing parameters.

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Посилання

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