摘要
为研究航空铝合金7050-T7451高速铣削过程中的温度场分布规律,在对螺旋刃立铣加工过程传热学模型分析和简化的基础上,对航空铝合金7050-T7451高速铣削过程中工件—刀具接触面温度分布进行三维有限元模拟,并重点研究热源强度计算、热载荷施加等关键技术。在相同的切削条件下,进行铣削温度试验,且模拟结果与试验结果比较吻合。研究表明所建立的三维铣削温度有限元模型能正确地模拟高速铣削过程中的工件温度场分布。
To investigate the distribution of cutting temperature in high speed milling for aerospace aluminum alloy 7050-T745 1. The contact temperature of work piece with tool in high speed milling process of aerospace aluminum alloy 7050-T7451 is simulated based on the analysis and simplification of the heat transfer model for the milling process with helical tool. The key techniques are studied, which include the calculation of heat source strength and application of heat load. The milling experiment is carried out in the same cutting conditions. The simulation results agree well with the experiment results. It shows that the established cutting temperature model can be used to simulate the distribution of work piece temperature field accurately in high speed milling.
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2010年第7期160-165,共6页
Journal of Mechanical Engineering
基金
国家自然科学基金(50435020)
国家高技术研究发展计划(863计划
2006AA04Z)资助项目
关键词
铝合金
有限元模拟
切削温度
Aluminum alloy Finite element simulation Cutting temperature
