本文選題：混合陶瓷球軸承　切入點：赫茲接觸理論　出處：《西南科技大學》2016年碩士論文

【摘要】：高速小型復合分子泵是眾多分析測試儀器的關鍵部件,是科學儀器清潔超高真空環(huán)境的重要解決途徑。高速小型復合分子泵中使用的滾動軸承為混合陶瓷球軸承。軸承由于摩擦力矩會產生熱量,如果熱量不能及時散發(fā),易使軸承失效,使分子泵不能正常工作。因此,對軸承進行熱分析研究具有重要的意義。本文以高速小型復合分子泵中使用的混合陶瓷球軸承為研究對象,主要完成以下四個方面的工作:(1)基于彈性接觸理論,運用赫茲理論計算了軸承的接觸應力和接觸變形,并運用了有限元分析軟件ANSYS Workbench對混合陶瓷球軸承進行接觸應力和接觸變形的仿真計算,并對結果進行對比分析。(2)選取適當的軸承發(fā)熱量計算模型,對軸承發(fā)熱量進行計算,并利用有限元軟件ANSYS Workbench對軸承穩(wěn)態(tài)溫度場進行仿真分析,得到軸承的穩(wěn)態(tài)溫度場分布。(3)利用有限元分析軟件ANSYS Workbench完成了對軸承熱-結構耦合仿真分析。(4)在課題組搭建的微小型高速深溝球軸承疲勞試驗機上,完成了溫度傳感器的設計安裝,實時監(jiān)測軸承工作過程中的溫度,獲得軸承工作狀況下的溫度。將測得的軸承的溫度數據與ANSYS Workbench溫度場仿真計算結果對比,結果具有一致性。
[Abstract]:High speed and small composite molecular pump is the key component of many analytical and testing instruments. It is an important solution for scientific instruments to clean the ultra-high vacuum environment. The rolling bearing used in high speed and small compound molecular pump is a hybrid ceramic ball bearing. Because of the friction moment, the bearing will produce heat, if the heat is not released in time, It is easy to invalidate the bearing and make the molecular pump unable to work normally. Therefore, it is of great significance to study the bearing thermal analysis. In this paper, the hybrid ceramic ball bearing used in the high speed and small compound molecular pump is taken as the research object. Based on the elastic contact theory, the contact stress and contact deformation of the bearing are calculated by using Hertz theory. The contact stress and contact deformation of hybrid ceramic ball bearings are calculated by using the finite element analysis software ANSYS Workbench, and the results are compared and analyzed. The steady-state temperature field of bearing is simulated and analyzed by finite element software ANSYS Workbench. The steady-state temperature field distribution of the bearing is obtained. (3) using the finite element analysis software ANSYS Workbench, the thermal-structural coupling simulation analysis of the bearing is completed in the micro-high speed deep groove ball bearing fatigue testing machine built by the research group. The temperature sensor is designed and installed, the temperature in the working process of the bearing is monitored in real time, and the temperature under the working condition of the bearing is obtained. The calculated temperature data of the bearing are compared with the simulation results of the ANSYS Workbench temperature field, and the results are consistent.
【學位授予單位】：西南科技大學
【學位級別】：碩士
【學位授予年份】：2016
【分類號】：TH703;TH133.33
，

本文編號：1654684