微细铣削航空铝合金温度场试验研究

Experiment Study on Cutting Temperature Field in Micro-milling Aluminum Alloy Process

采用红外热像仪测量微细铣削加工航空铝合金材料中的切削温度。分析微刀具、工件及切屑的温度场分布规律;研究进给速度、主轴转速、背吃刀量对切削温度的影响。研究结果表明微细铣削加工中切削温度较低,最高切削温度出现在微刀具与工件的接触区域。进给速度对切削温度影响较大。该试验结果可用于微细铣削加工参数优化,也可为提高工件表面加工质量、合理设计与使用刀具提供理论依据。

Infrared（ IR） temperature measurement systems are used to measure transient cutting temperature field in micro-milling process. The temperature field is analysised during micro-milling aluminum alloy process. The influence factors of feed rate,spindle speed and depth of cut on cutting temperature field are investigated in detail. The experiment results show that the maximum cutting temperature region occurs on the contact area of micro-cutter and workpiece. Comparing with spindle speed and depth of cut,the feed rate has been found to be the major factor affecting micro-milling temperature distribution. The experiment results can be used for processing parameter optimization,improving machining accuracy and surface quality and optimizing selection of micro-cutter.