中国机械工程2025，Vol.36Issue(6)：1159-1169,1177,12.DOI:10.3969/j.issn.1004-132X.2025.06.003
固结与游离磨粒协同作用硬脆材料磨抛加工机理
Grinding and Polishing Mechanism of Hard and Brittle Materials under Cooperation of Fixed and Free Abrasive Grains
摘要
Abstract
To investigate the material removal mechanism of hard and brittle materials during elastic grinding and polishing involving fixed and free abrasive grains,a diamond sandpaper grinding and polishing tool integrated with silicone rubber matrix was developed.The elastic tool was paired with varying concentrations of diamond polishing slurry.The contact stress and velocity distributions between the elastic tool and workpiece,as well as the abrasive grain-workpiece contact mechanics were analyzed to establish the material removal models for hard and brittle materials.Subsequently,silicon carbide workpieces were used as test samples,with grinding and polishing pressure,tool speed,and abrasive concentration as processing parameters in single-point experiments,which were conducted to characterize the material removal profile on the machined surfaces.The experimental re-sults reveal that the discrepancies between the established material removal models and the actual ma-terial removal depth range from 4.68％ to 8.22％.The removal depth is positively correlated with grinding and polishing pressure,tool speed,and abrasive concentration.The established models may accurately predict material removal behaviors in elastic grinding and polishing processes.关键词
硬脆材料/材料去除机理/弹性磨抛工具/固结磨粒/游离磨粒Key words
hard and brittle material/material removal mechanism/elastic grinding and polishing tool/fixed abrasive grain/free abrasive grain分类
金属材料引用本文复制引用
罗晨阳,郭磊,曹雏清,曹蕾蕾,施鹏飞..固结与游离磨粒协同作用硬脆材料磨抛加工机理[J].中国机械工程,2025,36(6):1159-1169,1177,12.基金项目
国家自然科学基金(51805044) （51805044）
陕西省自然科学基础研究计划(2022JM-254) （2022JM-254）
广西制造系统与先进制造技术重点实验室开放基金(22-35-4-S010) （22-35-4-S010）
