大型零件切削温度测量技术探讨

Analysis of Cutting Temperature Measurement Technology for Large Parts

随着国家经济的快速发展,对大型零件的需求日益剧增,重载切削占据着越来越重要的地位.大型零件加工时产生的切削温度不仅直接影响刀具的磨损及使用寿命,而且影响工件的加工表面质量和精确度,因此探讨大型零件切削温度测量技术,尤其铣削温度的测量是研究重载切削过程的重要方面.为了探讨大型零件铣削过程温度测量技术,首先对大型零件材料温度特性及影响进行分析;进而对常用的切削温度测量方法及应用进行阐述;最后通过对各种测温方法的对比分析并结合大型零件材料特性提出了适合于大型零件铣削温度的测量技术—夹丝半人工热电偶法,并通过铣削试验对切削温度进行采集,获得了可靠的热电势信号,为重载切削及刀具技术研究提供技术基础.

With the rapid development of the national economy, the demand of large parts will continue to in- crease, and heavy cutting plays more and more important role in our society. The cutting temperature which gener- ates from large parts not only directly has an effect on tool wear and life but also affects machining accuracy and sur- face quality of workpieee. Therefore, the analysis of measurement technology for large parts machining is important to research heavy cutting, especially milling temperature. In order to analyze the milling temperature measurement technology for large parts during heavy cutting, this paper firstly analyzed the material characteristics of large parts. Then, the common method and application of cutting temperature measurement was expounded. Finally, through the comparison and analysis among commonly used cutting temperature measurement methods and combining with the material characteristics of large parts, it is found that using an embedded semi-artificial thermocouple to meas- ure large parts cutting temperature could achieve the reliable thermoelectric potential signal, apd it also provides a technical basis for the study of heavy cutting and tool technology.