Characterization of machining of AISI 1045 steel over a wide range of cutting speeds. Part 1: Investigation of contact phenomena
Characterization of machining of AISI 1045 steel over a wide range of cutting speeds. Part 1: Investigation of contact phenomena
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DOI：
10.1243/09544054jem796
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发表时间：
2007-05
期刊：
影响因子：
--
通讯作者：
S. Iqbal;P. Mativenga;M. Sheikh
中科院分区：
文献类型：
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作者：
S. Iqbal;P. Mativenga;M. Sheikh
刀具-切屑界面的摩擦条件是加工过程建模和仿真的重要输入之一。然而，在建立有限元模型时，往往假定刀屑接触的性质，从而严重影响了有限元模型的可靠性。本文介绍了无涂层钨基硬质合金刀具干式高速车削AISI1045钢时刀屑接触界面的研究结果。试验在切割速度198~879m/min、进给速度0.1 mm/rev、恒定切割深度2.5 mm的条件下进行。研究和讨论了切削速度对刀具前刀面接触长度、接触面积、摩擦力、元素映射和表面粗糙度的影响。结果表明，本文提出的描述刀具-切屑接触区的定量方法，为在较宽的切削速度范围内准确、可靠地模拟金属加工过程提供了有价值的数据。
Abstract Friction conditions at the tool-chip interface are one of the most important inputs for modelling and simulation of the machining process. However, the nature of the tool-chip contact is often assumed in developing finite element models, thereby seriously affecting their reliability. In this paper, results of an investigation into the tool-chip contact interface using uncoated tungsten-based cemented carbide tools in dry high-speed turning of AISI 1045 steel are presented. The tests were conducted at cutting speeds ranging between 198 and 879m/min with a feed rate of 0.1mm/rev and a constant depth of cut of 2.5 mm. The effects of cutting speed on tool rake face contact length, contact area, friction, element mapping, and surface roughness are studied and discussed. It is shown that the quantitative methods, used here to characterize the tool-chip contact region, can provide valuable data for accurate and reliable modelling of the metal machining process over a wide range of cutting speeds.