论文部分内容阅读
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 is a new type of finishing technology that combines ultrasonic machining with abrasive flow machining. In order to further improve the processing accuracy and processing efficiency of ultrasonic assisted abrasive flow, a mechanical model of single abrasive grain is established from the viewpoint of material removal mechanism. The important parameters influencing the surface quality and processing efficiency were studied by Box-Behnken response surface experiments. The results show that ultrasonic-assisted abrasive flow achieves better surface quality and faster processing speed than conventional abrasive flow processing. The rate of material removal and surface roughness is most affected by the ultrasonic frequency perturbation. In a certain range As the ultrasonic frequency increases, the surface precision first increases and then decreases, and the processing efficiency is continuously improved.