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首页> 外文期刊>Tribology International >Identification of a friction model - Application to the context of dry cutting of an AISI 1045 annealed steel with a TiN-coated carbide tool
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Identification of a friction model - Application to the context of dry cutting of an AISI 1045 annealed steel with a TiN-coated carbide tool

机译：摩擦模型的识别-应用带TiN涂层的硬质合金刀具对AISI 1045退火钢进行干切削的应用

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摘要

The characterization of friction coefficients at the tool-chip-workpiece interface remains an issue. This paper aims to identify a friction model able to describe the friction coefficient at this interface during the dry cutting of an AISI1045 with TiN coated carbide tools. A new tribometer has been designed in order to reach relevant values of pressures and sliding velocities. This set-up is based on a modified pin-on-ring system. Additionally a numerical model simulating the frictional test has been associated in order to quantify average friction coefficients around the spherical pin, from the standard macroscopic data provided by the experimental system. A range of cutting speeds has been investigated. It has been shown that the friction coefficient is very much dependant on the sliding velocity. A new friction model has been identified based on the average local sliding velocity.
机译：在工具-芯片-工件界面处的摩擦系数的表征仍然是一个问题。本文旨在确定一种能够描述AISI1045用TiN涂层硬质合金刀具干切削时在该界面处的摩擦系数的摩擦模型。为了达到压力和滑动速度的相关值，已经设计了一种新的摩擦计。此设置基于修改后的针对环系统。此外，还关联了一个模拟摩擦测试的数值模型，以便根据实验系统提供的标准宏观数据对球形销周围的平均摩擦系数进行量化。已经研究了一系列的切割速度。已经表明，摩擦系数在很大程度上取决于滑动速度。基于平均局部滑动速度已经确定了新的摩擦模型。

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