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Characteristics and mechanism of top burr formation in slotting microchannels using arrayed thin slotting cutters

机译：开槽微切槽机在开槽微通道顶毛刺形成的特征及机理

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This paper investigates the characteristics and mechanism of top burr formation, and the influence of cutting conditions on top burr formation in slotting microchannels on stainless steel (SS304L) using arrayed thin slotting cutters. Saw-like top burr that is a combination of Poisson part and tear part was observed in the experiments. A 3D finite element model was developed for analysis of the top burr formation processes. The mechanism of top burr formation was proposed based on a series of stress contours and the progressive deformation of microchannel edge obtained from simulation. The process of top burr formation can be divided into four stages: Poisson part initiation, Poisson part development, tear part formation and tear part toppling. The top burr height was found to be largely determined by feed and cutting speed, while the top burr width was found to be strongly influenced by cutting depth, feed and cutting speed.
机译：本文研究了不锈钢（SS304L）开槽微细槽铣刀中顶部毛刺形成的特性，机理以及切削条件对开槽微通道中顶部毛刺形成的影响。在实验中观察到了由泊松部分和撕裂部分组成的锯齿状顶部毛刺。开发了用于分析顶部毛刺形成过程的3D有限元模型。根据一系列的应力轮廓和仿真得到的微通道边缘的渐进变形，提出了顶部毛刺的形成机理。顶部毛刺的形成过程可分为四个阶段：泊松部分萌生，泊松部分发展，撕裂部分形成和撕裂部分倾覆。发现顶部毛刺高度主要由进给和切削速度决定，而顶部毛刺宽度则受切削深度，进给和切削速度强烈影响。

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