摘要本文主要对多级离心风机进行了三维实体建模与运动仿真，并对旋转主轴进行了有限元分析。首先本文应用三维建模软件Pro/E对多级离心风机的零部件进行三维实体建模，主要包括叶轮、轴承、前盘、后盘、旋转主轴等部件，并在Pro/E环境下完成了多级离心风机的零部件的虚拟装配，装配时应注意旋转主轴的装配方式为销钉连接，以确保在对多级离心风机进行运动仿真时旋转主轴能够转动。通过Pro/E对虚拟装配好的多级离心风机进行全局干涉的检查，以保证装配符合相应的要求。50665

然后应用Pro/E的运动仿真功能对虚拟装配好的多级离心风机的运动过程进行仿真分析，通过运动仿真用户可以更直观的看到多级离心风机的工作原理和其内部的运动过程，从而极大地缩短了多级离心风机的设计研发周期，降低了产品的生产成本，增强了企业及其产品在市场上的竞争力。

最后本文应用有限元分析软件ANSYS对多级离心风机的旋转主轴进行静力学分析，通过分析结果可以让用户更直观的看到旋转主轴的受力情况。

毕业论文关键词：多级离心风机；Pro/E三维建模；虚拟装配；运动仿真

Abstract

Three-dimensional solid modeling  and motion simulation of  the multi-stage centrifugal blower are performed in this paper，and the static analysis of the multi-stage centrifugal blower’s rotating spindle is performed by ANSYS.

Firstly, three-dimensional solid modeling  of the main parts of the multi-stage centrifugal blower are performed by three-dimensional modeling software Pro/E，including impellers, bearings, front disc, rear disc, rotating spindle and other components, and the virtual assembly of the main parts  of the multi-stage centrifugal blower are completed under Pro/E environment. We should note that the assembly methods of the rotating shaft are connected by a pin to ensure that the rotating spindle can spin. The multi-stage centrifugal blower should be checked the global interference by Pro/E to ensure that the assembly line with the corresponding requirements. 

Then the movement of the multi-stage centrifugal blower is simulated through the motion simulation function of the Pro/E and users can be more intuitive to see the work principle of the multistage centrifugal blower and its internal movement process, thus greatly shortening the design development cycle of the multi-stage centrifugal blower, reduce production cost and enhance the competitiveness of the enterprises and their products in the market. 

Finally, the static analysis of the multi-stage centrifugal blower’s rotating spindle is performed by the finite element analysis software ANSYS, then users can see the force of the rotating spindle more directly by analyzing the results.

Keywords: Multistage centrifugal blower; three-dimensional modeling; virtual assembly; Motion Simulation

目  录

第一章 绪论 1

1.1 风机介绍 1

1.2 研究的目的及意义 2

1.3 多级离心风机的发展与研究现状 2

1.4 三维建模软件Pro/E概述 3

1.5 本文的主要工作内容 5

第二章 多级离心风机的零件建模 7

2.1 多级离心风机叶轮的创建 7

2.2 多级离心风机前盘的创建 11

2.3 多级离心风机后盘的创建 14

2.4 多级离心风机中盘的创建