An Investigation of Heat Dissipation in High Speed Machining
An Investigation of Heat Dissipation in High Speed Machining
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DOI：
10.4028/www.scientific.net/amr.69-70.480
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发表时间：
2009-05
期刊：
影响因子：
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通讯作者：
Y. Quan;J. A. Arsecularatne;Liangqi Zhang
中科院分区：
文献类型：
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作者：
Y. Quan;J. A. Arsecularatne;Liangqi Zhang
高速切削由于其经济上的优势（如更快的材料去除率）和技术上的优点（如改善的表面光洁度）而得到更广泛的应用。然而，高速切削的应用也带来了一些不理想的结果。例如，工具寿命和加工部件的表面完整性受到产生的大量热量的很大影响，但在高速加工期间的散热还没有得到很好的理解。本文旨在实现一个定量的了解，在高速加工的热耗散使用的酒吧车削配置。基于量热法，以水为传热介质，通过测量水中的温升来确定切削过程中排到切屑、刀具和工件中的热量。结果表明，切屑占据了所产生热量的最大部分，并且该部分随进料量的增加而增加。
High speed machining (HSM) is finding wider applications due to its economic advantages, such as faster material removal rates, and its technological merits, such as improved surface finish. Nevertheless, the application of HSM also brings about some undesirable results. For example, the tool life and surface integrity of a machined component are greatly affected by the large amount of heat generated, but heat dissipation during an HSM has not been well understood. This paper aims to achieve a quantitative understanding of the heat dissipation in HSM using a bar turning configuration. Based on the calorimetric method and utilizing water as the heat transfer medium, the temperature rise in water was measured to determine the fractions of heat dissipated into the chips, the tool and the workpiece during machining. The obtained results show that the chips take the largest portion of the heat generated and this fraction increases with the increase in feed.