摘要
基于有限元方法建立车削钛合金Ti6Al4V的切削仿真模型。通过将Kistler9257B三向车削测力仪测得的主切削力与通过仿真模型获得的主切削力进行对比,验证仿真模型的正确性。通过设计中心复合试验,建立主切削力的数学模型。分析表明:通过试验得到的主切削力与仿真模型获得的主切削力相差小于10%;在所选试验参数范围内,随着背吃刀量增加,主切削力增大;随着刀具前角、切削速度增大,主切削力减小;背吃刀量对主切削力的影响最为显著。
Cutting simulation model in cutting Ti6Al4 Vtitanium alloys was established based on finite element methods.The main cutting force of simulation model was verified through the cutting force measured by the Kistler9257B3-axis dynamometer.The mathematic model of the main cutting force was built by central composite experiment.The results show that：the deviation of the main cutting force between simulation results and experiment results is less than 10%;with certain limits,an increase in the back cutting depth increases the main cutting force;an increase in the rake angle and cutting speed decrease the main cutting force;the influence of back cutting depth on the main cutting force is the most significant.
出处
《中国农机化学报》
2016年第9期280-284,共5页
Journal of Chinese Agricultural Mechanization
基金
天津市自然科学重点基金(13JCYBJC17800)
天津市自然科学基金(15JCZDJC32800)
关键词
钛合金
主切削力
中心复合试验
数学模型
titanium alloys
main cutting force
central composite experiment
mathematic model
