Micromachining, which is used for various industrial purposes, requires the depth of cut and feed to be expressed in micrometers. Appropriate stock allowance and cutting conditions need to be selected to ensure that excess material is removed in the form of chips. To calculate the allowance, it is essential to take into account the tool nose radius, as this cutting parameter affects the minimum chip thickness. Theoretical and numerical studies on the topic predominate over experimental ones. This article describes a method and a test setup for determining the minimum chip thickness during turning. The workpiece was ground before turning to prevent radial runout and easily identify the transition zone. Contact and non-contact profilometers were used to measure surface profiles. The main aim of this study was to determine the tool–workpiece interaction stages and the cutting conditions under which material was removed as chips. Additionally, it was necessary to analyze how the feed, cutting speed, and edge radius influenced the minimum chip thickness. This parameter was found to be dependent on the depth of cut and feed. Elastic and plastic deformation and ploughing were observed when the feed rate was lower than the cutting edge radius.

中文翻译：

---

确定纵向车削最小切屑厚度的方法

用于各种工业目的的微加工要求切削深度和进给量以微米表示。需要选择适当的备料余量和切削条件，以确保去除切屑形式的多余材料。为了计算余量，必须考虑刀尖半径，因为该切削参数会影响最小切屑厚度。有关该主题的理论和数值研究优于实验研究。本文介绍了一种用于确定车削期间最小切屑厚度的方法和测试设置。车削工件之前先对其进行磨削，以防止径向跳动并轻松识别过渡区。接触轮廓仪和非接触轮廓仪用于测量表面轮廓。这项研究的主要目的是确定刀具与工件的相互作用阶段以及切削条件，在该条件下将材料作为切屑去除。另外，有必要分析进给，切削速度和边缘半径如何影响最小切屑厚度。发现该参数取决于切割和进给的深度。当进给速度低于切削刃半径时，会观察到弹性和塑性变形以及耕作。