摘要
为了获得P4级轴承沟道粗糙度(≤0.063μm)的最优超精方案,通过改变超精时间、工件切线速度、油石压力和油石摆荡频率4个参数,对氮化硅轴承套圈沟道进行正交实验,得到最优超精方案,最后对该方案进行验证并对粗糙度进行讨论。结果表明,最优超精方案加工出的沟道表面粗糙度值最低,由分析得知,沟道表面粗糙度受到陶瓷材料质量和磨削工序的影响较大。最优方案下得到的沟道表面达到P4级轴承粗糙度要求,控制好材料质量和磨削工序可进一步提升沟道超精表面质量。
In order to control raceway roughness of Si3N4 bearings under P4 level （≤0.063μm）, or- thogonal experiments concerning superfinishing parameters of superfinishing time, workpiece tangential velocity, oilstone pressure and oscillation speed were carried out to optimize superfinishing process. A val- idation experiment was conducted subsequently to verify the optimization results. The experimental results showed that the roughness value of the raceway surface, processed by the superfinishing scheme, was the lowest, and the ceramic material quality and grinding process of raceway played a decisive role in promo- ting superfinishing raceway quality. It was concluded that the raceway surface obtained by the optimal scheme can meet the requirement of P4 grade roughness of the bearing, and the quality of the material and the grinding process shall be controlled to further improve the superfine surface quality of the raceway.
作者
李颂华
秘文博
吴玉厚
孙健
LI Songhua MI Wenbo WU Yuhou SUN Jian(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 Jianzhu University, Shenyang 110168, China)
出处
《机械与电子》
2017年第2期32-35,76,共5页
Machinery & Electronics
基金
辽宁省高等学校优秀人才支持计划(LR2015053)
辽宁省自然科学基金(2015020149)
沈阳市科技计划项目(F16-205-1-15)
高档石材数控加工装备与技术国家地方联合工程实验室开放基金(SJSC-2015-3)
关键词
氮化硅
轴承
套圈
沟道
超精
粗糙度
SiaN4
bearing
outer ring
raceway
superfinishing
roughness
