Temperature determination at the chip-tool interface using an inverse thermal model considering the tool and tool holder
Temperature determination at the chip-tool interface using an inverse thermal model considering the tool and tool holder
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DOI：
10.1016/j.jmatprotec.2006.03.086
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发表时间：
2006-10-20
影响因子：
6.3
通讯作者：
Guimaraes, G.
中科院分区：
文献类型：
--
作者：
Carvalho, S. R.;Silva, S. M. M. Lima e;Guimaraes, G.
切削过程中产生的温度场是广泛研究的主题。研究切削过程中的热场对开发提高刀具寿命和降低生产成本的新工艺具有重要意义。由于刀具-切屑界面温度的直接测量非常复杂，本文提出了利用逆热传导问题技术估算刀具-切屑界面温度和热流密度的方法。对考虑刀具和刀柄组合的瞬态三维热扩散方程进行数值求解，得到了热模型。求解方程采用有限体积法。热性能随温度和对流热损失的变化也被考虑。为了验证模型，验证切削参数对温度场的影响，采用硬质合金刀具进行了多次切削试验。(c) 2006 Elsevier b.v.版权所有
The temperature fields generated in the cutting processes are subject of extensive research. The studies of these thermal fields in machining are very important for the development of new technologies aiming to increase the tool lives and to reduce production costs. Since the direct temperature measurements at the chip-tool interface are very complex this work proposes the estimation of the temperature and the heat flux at the chip-tool interface using the inverse heat conduction problem technique. The thermal model is obtained by a numerical solution of the transient three-dimensional heat diffusion equation that considers both the tool and the tool holder assembly. To determine the solution equation the finite volume method is used. Changing in the thermal properties with the temperature and heat losses by convection are also considered. Several cutting tests using cemented carbide tools were performed in order to check the model and to verify the influence of the cutting parameters on the temperature field. (c) 2006 Elsevier B.V All rights reserved.