摘要
超声辅助磨料流加工是将超声加工与磨料流加工结合在一起的新型光整加工技术。为了进一步提高超声辅助磨料流的加工精度和加工效率,从材料去除机理的角度出发,建立了单磨粒的力学模型。通过Box-Behnken响应面实验对影响表面质量和加工效率的重要参数进行了研究。结果表明:与传统的磨料流加工相比,超声辅助磨料流获得了更好的表面质量和更快的加工速度;材料去除量和表面粗糙度变化率受超声频率扰动的影响最大;在一定范围内,随着超声频率的增大,表面精度先提高后降低,加工效率则不断提高。
Ultrasonic assisted abrasive flow machining（UAAFM） is a new technique which is a combination of ultrasonic machining and abrasive flow machining. In order to further improve the machining accuracy and efficiency of UAAFM. From the angle of material removal mechanism, an force model for a single abrasive particle was set up. Experiments using Box-Behnken response surface methodology were conducted to research the key process parameters affecting on the surface quality and processing efficiency. It is shown that, compared with traditional abrasive flow machining, UAAFM achieves better surface quality and higher speed of processing. The perturbation of ultrasonic frequency has a significant impact on material removal and change ratio of surface roughness. Within a certain range, with the increase of ultrasonic frequency, the surface accuracy increases firstly and then decreases, and the machining efficiency improves continuously.
出处
《热加工工艺》
CSCD
北大核心
2017年第6期163-167,共5页
Hot Working Technology
基金
国家自然科学基金资助项目(51275490)
关键词
超声辅助
磨料流加工
材料去除机理
数学模型
响应面法
ultrasonic assistance
abrasive flow machining
material removal mechanism
mathematical models
response surface methodology
