摘要绞吸式挖泥船作为一种常见的疏浚系统，其前端绞刀的设计一直是提高挖泥船效率 的关键。所以绞刀的设计也一直是挖泥船设计的重要课题之一。

本文提供了一种通过经验公式，预估绞刀刀齿的受力情况来设计绞刀的方法。这种 方法有别于对绞刀切削过程进行真实性分析的繁琐设计方法。通过对绞刀的结构介绍分 析得出绞刀参数设计的重中之重是绞刀轮廓线的确立。于是分析了绞刀的刀臂轮廓线的 空间方程的建立，并在此基础上运用建模软件建立绞刀的模型。然后是设计刀齿的模型， 该部分基于一般传统绞刀刀齿的设计即可。接着通过对绞刀切削过程的受力情况进行分 析，大体计算出绞刀刀齿的受力情况。本文只模拟了右旋宽齿的绞刀刀臂的受力情况， 在得到绞刀刀齿所受到的在和之后将绞刀模型导入有限元中分析优化。着重分析静力分 析与模态分析，得到计算结果后在得出设计结论。84076

毕业论文关键词：绞刀；切削受力；参数化建模；有限元分析

Abstract The cutter suction dredger is a kind of common dredging system。The design of the front of the cutter always is the key to improve the efficiency of the dredger。So the reamer design also has been one of the important topics of dredger design。

This paper provides an empirical formula。Prediction method to design the cutter forces of the cutter tooth。This method is different from the tedious design method of authenticity analysis of cutter。Through the introduction and analysis of the structure of the cutter priority among priorities is to establish the design parameters of cutter cutter contour。Analysis of the spatial equation arm contour of the cutter。And based on the use of modeling software to establish the model。Then the design of the cutter tooth model, the part of the design can be based on the traditional cutter tooth。Then through analyzing the stress condition of cutter cutting process analysis, roughly calculate the stress condition of the cutter tooth。This paper simulates the dextral wide tooth cutter arm of force in the obtained by the cutter tooth in and after the cutter model into finite element analysis and optimization。The static analysis and modal analysis are emphatically analyzed, and the conclusion is drawn that the calculation results are obtained。

Keywords:Reamer;Cutting force;Parametric modeling;finite element analysis

目 录

第一章 绪论 1

1。1 研究背景 1

1。2 研究现状 3

1。3 研究内容 5

第二章 绞吸式挖泥船绞刀参数的确立 7

2。1 绞刀模型的结构以及绞刀的类型 7

2。2 绞刀的工作的原理分析 8

2。3 绞刀的参数设计和参数选择 9

2。4 本章小结 13

第三章 绞刀参数化建模 14

3。1 参数化技术的简述 14

3。2 基于经验公式的绞刀刀臂轮廓线建立 14

3。2。1 刀臂轮廓线在绞刀轴面上的投影 15

3。2。2 刀臂轮廓线在绞刀平面投影的确立方法 15

3。3 绞刀参数化模型建立 18

3。4 绞刀刀齿的模型的设计 19

3。5 本章小结 20