МОДЕЛЮВАННЯ МІКРОГЕОМЕТРІЇ ІНСТРУМЕНТУ В ПРОЦЕСІ ЙОГО ЗНОШУВАННЯ ПРИ РІЗАННІ КОМПОЗИЦІЙНИХ МАТЕРІАЛІВ (original) (raw)

МОДЕЛЮВАННЯ МІКРОГЕОМЕТРІЇ ІНСТРУМЕНТУ В ПРОЦЕСІ ЙОГО ЗНОШУВАННЯ ПРИ РІЗАННІ КОМПОЗИЦІЙНИХ МАТЕРІАЛІВ

2020

Abstract

The most difficult problem during the machining of polymer composite materials is the intensive wear of the tool, which leads not only to a decrease in its working capacity, but also sharply worsens the quality of the operations performed. In this paper, we consider the process of wear of the cutting edge of a tool as a change in its microgeometry with respect to the initial state. The physical nature of abrasive wear as a process of contact interaction of the flank surface of a tool with a destroyed filler and intense heat due to friction is considered. Based on the laws obtained experimentally, we can conclude that the initial geometry of the cutting edge of the tool already sharply changes during the running-in period and by the beginning of stationary wear takes on some form, which later changes only quantitatively without distortion of the stable worked-in shape. In fact, we can say that the initial geometry of the cutting edge, selected for some rational reasons or as a result...

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