杯形砂轮旋转超声磨削SiCp/Al复合材料表面微观形貌预测与试验  

Prediction and Experimental Investigation of Surface Microtopography of SiCp/Al Composites in Rotary Ultrasonic Grinding with Cup Wheel

作　　者：邱俊宇 秦慧斌[1] 冯毅 贺牧 QIU Junyu;QIN Huibin;FENG Yi;HE Mu(School of Mechanical Engineering,North University of China,Taiyuan 030051,China;School of Vehicle and Transportation Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China)

机构地区：[1]中北大学机械工程学院,太原030051 [2]太原科技大学车辆与交通工程学院,太原030024

出　　处：《机械科学与技术》2025年第1期67-74,共8页Mechanical Science and Technology for Aerospace Engineering

基　　金：山西省研究生教育创新项目(2023SJ196);山西省专利推广实施项目(20210519);中北大学2024年研究生教育教学改革培育课题项目(202409)。

摘　　要：SiCp/Al复合材料具有优异的综合性能,在高科技制造领域得到了广泛应用,但其硬度高、加工困难。杯形砂轮旋转超声磨削常被用来端磨硬脆材料表面,但大尺寸杯形砂轮的谐振模态多样、加工机理复杂,凭经验难以预判磨削后工件的表面微观形貌和粗糙度。为此,该文基于数值模拟方法,以杯形砂轮磨粒随机分布为原则,在MATLAB中建立了数值仿真模型,推导了旋转超声磨削磨粒的运动方程,预测了磨削试件的表面微观形貌与粗糙度。最后,以SiCp/Al复合材料为磨削对象,对比仿真与试验结果,验证了仿真模型的有效性。该方法可为杯形砂轮旋转超声磨削最优化参数的选择提供参考,并实现高质量、高效率和低成本的磨削。SiCp/Al composites with excellent properties are widely used in high-tech fields.However,these materials are challenging to grind due to their hardness and brittleness.Rotary ultrasonic grinding with cup wheel is an effective method to grind surfaces of hard and brittle materials.But the resonance modes of large-sized cup wheels are diverse,the processing mechanism is complex,and it is difficult to predict the surface microstructure and roughness of the workpiece after grinding by experience.An approach based on numerical modeling is proposed to solve this problem in this paper.A numerical simulation model was established in MATLAB in terms of the principle of random distribution of abrasive grains in cup wheels.In addition,the equations of motion of the abrasive grains were derived by using the ultrasonic rotary grinding,the surface micromorphology and roughness of the ground specimens were predicted.Finally,the validity of the simulation model is verified by analyzing the simulation and test results with SiCp/Al composites as grinding pieces.This method can provide a reference for selecting the optimal parameters in the rotary ultrasonic grinding of cup wheels,and achieve high quality,high efficiency,and low-cost grinding.

关 键 词：旋转超声磨削 SICP/AL复合材料 仿真 表面形貌 表面粗糙度 

分 类 号：TG584[机械工程—精密仪器及机械]