摘要
在氧化锆陶瓷沟道磨削中,为提高表面质量,并提高磨削效率、降低成本,采用单因素实验切入式磨削沟道,研究工艺参数对氧化锆陶瓷沟道表面质量的影响规律及材料的去除机理,并通过扫描电子显微镜,观察磨削后的表面形貌,在单因素实验基础上进行正交实验,对工艺参数进行优化。实验结果表明,表面粗糙度值Ra、R3y、Rz随磨削深度、砂轮线速度、工件进给速度增大而减小;优化组合参数为磨削深度20μm、砂轮线速度40 m/s、工件进给速度7000 mm/min。为提高磨削效率、降低成本,可以适当提高磨削深度,适当的增加磨削热量有利于降低表面粗糙度;采用切入式方法磨削沟道,磨削内圈沟道时,尽量选用半径较大的金刚石砂轮;存在适当大小的峰谷高度差,波谷可以起到储油作用,有助于轴承润滑,减少轴承磨损。
Aim to improve the surface quality,raise the grinding efficiency and bring down production costs,single factor experiments were used to cut in grinding zirconia ceramics groove.The influence of process parameters on the surface quality of the zirconia ceramics groove and the material removal mechanism were studied.The surface morphology was observed by electron microscopy,and the orthogonal experiment was carried out on the basis of single factor experiments to optimize the process parameters.The experimental results show that the surface roughness Ra,R3y and Rz decrease with the increase of grinding depth,grinding wheel linear speed and workpiece feed rate;the optimized combination parameters are grinding depth 20μm,wheel linear speed is 40 m/s and workpiece feed rate is 7000 mm/min.In order to improve grinding efficiency and bring down production costs,grinding depth can be appropriately increased,and paper increase of grinding heat can reduce the surface roughness.When grinding the outer groove of the inner ring,the diamond grinding wheel with larger radius should be selected as far as possible.There is a proper height difference between the peak and the valley.The valley can play the role of oil storage,which is conducive to bearing lubrication,reducing bearing wear.
作者
李颂华
韩光田
孙健
LI Songhua;HAN Guangtian;SUN Jian(School of Mechanical Engineering, Shenyang Jianzhu University, Shenyang 110168, China)
出处
《硅酸盐通报》
CAS
北大核心
2020年第4期1260-1265,共6页
Bulletin of the Chinese Ceramic Society
基金
国家自然科学基金(51975388)
辽宁省自然科学基金(2019-MS-266,2019-2D-0666)。
