氮化硅陶瓷球轴承的沟道波纹度超精工艺调控  

Superfinishing process control of raceway waviness in silicon nitride ceramic ball bearings

作　　者：高艺枫 李颂华[1,2] 魏超 李闯 张豪 GAO Yifeng;LI Songhua;WEI Chao;LI Chuang;ZHANG Hao(School of Mechanical Engineering,Shenyang Jianzhu University,Shenyang 110168,China;National-Local Joint Engineering Laboratory of NC Machining Equipment and Technology of High-Grade Stone,Shenyang 110168,China)

机构地区：[1]沈阳建筑大学机械工程学院,沈阳110168 [2]高档石材数控加工装备与技术国家地方联合工程实验室,沈阳110168

出　　处：《现代制造工程》2024年第12期102-107,共6页Modern Manufacturing Engineering

基　　金：国家自然科学基金(联合基金)重点项目(U23A20631);辽宁省应用基础研究计划项目(2022JH2/101300216);辽宁“百千万工程人才工程”培养经费资助项目;辽宁省航发材料摩擦学重点实验室开放基金项目(LKLAMTF202306)。

摘　　要：轴承沟道波纹度是影响轴承振动特性的最主要因素,为降低氮化硅陶瓷球轴承的振动水平,开展氮化硅套圈沟道波纹度的超精工艺调控研究。使用沟道超精机对氮化硅套圈沟道进行超精加工试验,研究超精工艺参数对沟道波纹度的影响趋势。提出考虑沟道波纹度的轴承振动特性计算模型,并通过振动测试验证计算模型的有效性,同时分析沟道波纹度对轴承振动特性的影响规律。结果表明:在超精加工中沟道波纹度随着工件切线速度的增大先减小后增大,随着摆荡频率的增大先减小后增大,轴承的振动水平随着沟道波纹度的增大逐渐加剧;当油石压力较大时,增大工件切线速度和摆荡频率进行粗超加工,沟道波纹度快速降低;超精加工中,当工件切线速度为700~800 m/min、摆荡频率为800~1000次/分和油石压力为0.2~0.4 N/m^(2)时,沟道表面波纹度≤0.05μm,轴承振动加速度均方根值≤2 m/s^(2),满足轴承振动加速度Z3级要求。The waviness of bearing raceway is the main influencing factor on the vibration characteristics of bearings.In order to reduce the vibration level of silicon nitride ceramic ball bearings,a research on the superfinishing process control of silicon nitride ring raceway waviness was carried out.Superfinishing process experiments was conducted on silicon nitride ring raceway using a raceway superfinishing machine,the influence trend of superfinishing process parameters on raceway waviness was studied.A bearing calculation model for vibration characteristics was proposed considering raceway waviness,and the effectiveness of the culation model was verified through vibration testing,the influence of raceway waviness was analyzed on bearing vibration characteristics.The results show that in superfinishing process,the raceway waviness first decreases and then increases with the increase of the tangential velocity of the workpiece,and then decreases and then increases with the increase of the oscillation frequency;the vibration level of the bearing gradually intensifies with the increase of raceway waviness.When the pressure of the oilstone is high,increasing the tangential velocity of the workpiece and oscillation frequency for rough machining results in a rapid decrease in raceway waviness.In superfinishing process,when the tangential velocity of the workpiece is 700~800 m/min,the oscillation frequency is 800~1 000 times/min,and the oilstone pressure is 0.2~0.4 N/m^(2),the surface waviness is≤0.05 μm.The root mean square value of bearing vibration acceleration is ≤2 m/s^(2),which meets the requirement of Z3 level bearing vibration acceleration.

关 键 词：氮化硅陶瓷球轴承 沟道波纹度 工艺调控 振动加速度 

分 类 号：TH161.1[机械工程—机械制造及自动化]