砂轮约束磨粒喷射精密光整加工表面微观形貌的研究  

Study on Surface Microscopic Morphology of Abrasive Jet Finishing with Grinding Wheel as Restraint

作　　者：李长河[1] 蔡光起[2] 原所先[2] 修世超[2] 

机构地区：[1]青岛理工大学,青岛266033 [2]东北大学,沈阳110004

出　　处：《中国机械工程》2006年第14期1516-1518,1523,共4页China Mechanical Engineering

基　　金：国家自然科学基金资助项目(50475052);高等学校博士学科点专项科研基金资助项目(20040145001)

摘　　要：对砂轮约束磨粒喷射精密光整加工表面微观形貌进行分析,研究了工件表面尖峰去除机理和均化及改善波纹度机理。利用平面磨床M7120对精磨后的Q235A工件材料进行喷射加工实验,采用TALSURF5轮廓仪测量加工后表面的微观几何参数值,用扫描电镜观察表面微观形貌变化,用金相显微镜观察磨削烧伤。实验结果表明,随着加工循环次数的增加,表面微观形貌由方向一致的沟槽过渡到随机的、无方向性的微细凹坑,表面粗糙度值明显降低,喷射加工能减轻或消除磨削烧伤。The surface microscopic morphology of abrasive jet finishing process with wheel as restraint was analyzed. The ground surface peak removal mechanism and homogenizing and improving ripples mechanism were investigated. Experiments were performed with a plane grinder M7120 and workpiece material of Q235A. The machined surface morphology was studied using SEM and microcosmic geometry parameters were measured with TALSURF5 instrument. The ground burnout was investigated with microscope. The experimental results show that the machined surface change from continuous and parallel micro--groove and plough to randomly discontinuous micro--pit can be observed with machining circles increasing. Furthermore, the novelty process method can diminish roughness values and ground burnout obviously.

关 键 词：砂轮约束 磨粒喷射 精密光整加工 微观形貌 表面粗糙度 磨削烧伤 

分 类 号：TG580[金属学及工艺—金属切削加工及机床]