天然金刚石的超声辅助研磨工艺仿真与实验  

Simulation and experiment of ultrasonic-assisted grinding process for natural diamond

作　　者：裴雷钢 石广丰 陈嘉增[1,2,3] 姚栋 杨永明 李俊烨 PEI Leigang;SHI Guangfeng;CHEN Jiazeng;YAO Dong;YANG Yongming;LI Junye(Chongqing Research Institute,Changchun University of Science and Technology,Chongqing 401120,China;College of Mechanical and Electrical Engineering,Changchun University of Science and Technology,Changchun 130022,China;Joint Research Center of Diamond Tool Technology,Changchun University of Science and Technology,Changchun 130022,China)

机构地区：[1]长春理工大学重庆研究院,重庆401120 [2]长春理工大学机电工程学院,长春130022 [3]长春理工大学,金刚石工具技术联合研究中心,长春130022

出　　处：《金刚石与磨料磨具工程》2023年第6期720-726,共7页Diamond & Abrasives Engineering

基　　金：重庆市自然科学基金面上项目(cstc2021jcyj-msxmX1201);吉林省教育厅科学技术研究规划项目(JJKH20230809KJ)。

摘　　要：为提高天然金刚石研磨的表面质量,引入超声振动进行复合研磨加工,建立非弹性碰撞理论模型,计算超声振动幅值。以表面粗糙度为指标,研究超声振幅、研磨转速、磨粒粒度相关工艺参数对天然金刚石(100)晶面材料去除的影响,并寻求最优工艺参数。结果表明:(110)晶面易磨方向的振幅取值范围为3.1~8.7μm,(100)晶面易磨方向的振幅取值范围为2.9~9.1μm。通过正交实验获取的(110)晶面研磨最优工艺组合参数是超声振幅为6.0μm,研磨盘转速为2800 r/min,金刚石磨粒粒度代号为M3/6。与传统机械研磨相比,超声辅助研磨后的金刚石(100)晶面表面粗糙度Ra为16.21 nm,同比下降了63.83%。超声辅助研磨天然金刚石可以获得比传统机械研磨更好的表面质量。To improve the surface quality of natural diamond grinding,the ultrasonic vibration was introduced for composite grinding,and an inelastic collision theory model was established to calculate the amplitude of ultrasonic vibration.The effects of ultrasonic amplitude,grinding speed and grinding grain size on the material removal of natural diamond(100)crystal surface were studied,and the optimal process parameters were sought.The results show that the ultrasonic amplitude ranges from 3.1 to 8.7μm in the direction of easy grinding of natural diamond(110)crystal surface and 2.9 to 9.1μm in the direction of easy grinding of natural diamond(100)crystal surface.The optimal process combination parameters of natural diamond(100)crystal surface grinding obtained by orthogonal experiment are ultrasonic amplitude of 6.0μm,grinding disk speed of 2800 r/min,diamond grinding grain size code of M3/6.The surface roughness Ra of diamond(100)crystal surface after ultrasonic assisted grinding is 16.21 nm,which is 63.83%lower than that of traditional mechanical grinding.Ultrasonic assisted grinding of natural diamonds can achieve better surface quality than traditional mechanical grinding.

关 键 词：天然金刚石 超声研磨 正交实验 表面粗糙度 

分 类 号：TQ164[化学工程—高温制品工业] TG58[金属学及工艺—金属切削加工及机床]