摘要
为了充分发挥磨削力在超声辅助制孔加工工艺参数匹配、优化等方面的指导作用,基于压痕断裂力学理论,建立了纵扭复合超声螺旋磨削制孔加工的磨削力预测模型。搭建了磨削力测试平台,以氧化锆工程陶瓷为研究对象,开展了磨削力实验确定了模型的修正系数,并对模型进行验证。结果表明:模型预测结果与实验结果具有相同的变化趋势,且数值相近,验证了模型的正确性。在此基础上,进一步分析了工艺参数对磨削力的影响规律,发现磨削力随着超声振幅、主轴转速的增大而减小;随着螺距、螺旋进给速度的增大而增大。
In order to give full play to the guiding role of grinding force for the ultrasonic-assisted hole making process parameters matching and optimization,the cutting force prediction model is established based on the theory of indentation fracture mechanics.A grinding force testing platform was built,and chose zirconia engineering ceramics as the research object,carried out grinding force experiment to determine the correction coefficient of the model and verified the prediction model.The experimental results show that the predicted results have the same variation trend as the experimental results,and the values are similar,which proves the effectiveness of the model.On this basis,the influence law of process parameters on grinding force is analyzed.It is found that the grinding force decreases with the increase of ultrasonic amplitude and spindle speed,and it increases with the increases in feed rate and pitch.
作者
林佳杰
魏昕
杨宇辉
汪永超
LIN Jia-jie;WEI Xin;YANG Yu-hui;WANG Yong-chao(School of Electromechanical Engineering,Guangdong University of Technology,Guangzhou 510006,China;School of Electrical Engineering,Guangdong Mechanical&Electrical Polytechnic,Guangzhou 510550,China)
出处
《组合机床与自动化加工技术》
北大核心
2021年第4期53-56,共4页
Modular Machine Tool & Automatic Manufacturing Technique
基金
国家自然科学基金项目(51175092)
广东省自然科学基金项目(10151009001000036)
广东省科技计划项目(2018B090902003)。
关键词
纵扭复合超声
磨削
孔加工
磨削力
longitudinal-torsional ultrasonic
grinding
hole making
grinding force
