铝合金薄壁件超声振动铣削形变量研究  

Study on the Deformation of Aluminum Alloy Thin-Walled Parts in Ultrasonic Vibration Milling

作　　者：付哲[1] 陈戈扬 杨树峰[1] FU Zhe;CHEN Ge-yang;YANG Shu-feng(Zhongyuan University of Technology,He'nan Zhengzhou 450007,China)

机构地区：[1]中原工学院,河南郑州450007

出　　处：《机械设计与制造》2024年第11期132-137,共6页Machinery Design & Manufacture

基　　金：国家自然科学基金面上项目(52075561)。

摘　　要：针对铝合金薄壁件加工中形变量较大的问题,这里提出了超声振动辅助铣削的方法对铝合金薄壁结构进行加工,以提高薄壁件的加工质量。首先采用ABAQUS软件建立了T形薄壁结构的热力耦合仿真模型,从温度场和应力场两方面对薄壁的变形因素进行了分析。然后设计了铝合金薄壁件铣削实验,研究了薄壁区域温度和受力的变化规律。最后通过测量试验后薄壁件的最大形变量,对仿真模型的准确性进行了验证。研究结果表明:薄壁结构的形变量随主轴转速的升高逐渐降低,随进给速度的增加逐渐增加。超声振动可以有效的降低薄壁结构的温度和受力,从而降低薄壁结构的形变量。超声振动铣削时形变量平均减小了22.8%。实验和仿真之间两者之间形变量的平均误差为4.3%,薄壁铣削形变量模拟具有较高的准确性。Aiming at the problem of large deformation in the processing of aluminum alloy thin-walled parts,this paper proposed a method of ultrasonic vibration assisted milling to process aluminum alloy thin-walled structures in order to improve the processing quality of thin-walled parts.Firstly,the thermal mechanical coupling simulation model of T-shaped thin-walled structure was established by using ABAQUS software,and the deformation factors of thin-walled structure were analyzed from the temperature field and stress field.Then,the milling experiment of aluminum alloy thin-walled parts was designed,and the variation of temperature and stress in the thin-walled area was studied.Finally,the accuracy of the simulation model was verified by measuring the maximum deformation of the thin-walled part after the test.The results show that the deformation of thin-walled structure decreases with the increase of spindle speed and increases with the increase of feed speed.Ultrasonic vibration can effectively reduce the temperature and stress of thin-walled structures,thus reducing the deformation of thin-walled structures.The deformation of ultrasonic vibration milling is reduced by 22.8% on average.The average error of the deformation between the experiment and the simulation is 4.3%,which can effectively simulate the deformation of thin-walled milling.

关 键 词：铝合金 薄壁件 超声铣削 有限元仿真 形变量 

分 类 号：TH16[机械工程—机械制造及自动化]