新型牙轮钻头球面浮动套轴承设计与分析  

Design and Analysis of Spherical Floating Ring Journal Bearings of New Rock Bit

作　　者：何畏[1] 孙宇[1] 邱亚玲[1] 王向涛[1] 汤海平[1] 刘杰[1] 

机构地区：[1]西南石油大学石油天然气装备教育部重点实验室,四川成都610500

出　　处：《润滑与密封》2012年第9期87-90,共4页Lubrication Engineering

基　　金：四川省科技计划项目(2009GZ0026);省部共建教育部重点实验室开放基金项目(2006STS01);专利项目(201120489444.8)

摘　　要：分析普通牙轮钻头浮动套轴承存在的缺陷,提出一种新型牙轮钻头球面浮动套轴承,并且利用ANSYS软件对其进行非线性接触有限元分析。结果表明,与普通浮动套轴承相比,新型牙轮钻头球面浮动套轴承通过修形设计和开槽等方式使接触应力分布更均匀,更容易形成动力润滑膜;在其表面沉积TiAlN复合涂层能有效提高浮动套的耐磨性。因此,该新型牙轮钻头球面浮动套轴承抗冲击能力、润滑能力和耐磨能力强,具有良好的实用价值。The defects existed in traditional floating ring journal bearings of rock bit were analyzed,a new type of spheri- cal floating ring journal bearings was developed, and finite element analysis of nonlinear contact to it was carried out by ANSYS software. The results show that as compared with ordinary floating ring bearing, the new one has more uniform con- tact stress distribution by methods of modified design and slotting on the rock bit, and easier to form a dynamic lubrication film. The anti-wear ability of floating ring can be effectively improved by the TiA1N composite coating deposited on bearing surface. Therefore ,the new spherical floating ring journal bearings have strong properties of impact resistance, lubricity and anti-wear ability with good practical value.

关 键 词：牙轮钻头 球面浮动套 滑动轴承 

分 类 号：TH133.31[机械工程—机械制造及自动化]