摘要随着我国机械制造业及国内电力行业的蓬勃发展，汽轮机的容量也在不断增加，发动机是汽轮机制造的核心，枞树型榫齿加工技术也是汽轮机制造的关键因素之一，为了适应现代化工业发展的要求，对汽轮机行业的设计和加工能力提出了更高的要求。52528

本文通过对燃气轮机透平端轮盘与叶片的结构特点进行分析，进而对枞树型榫齿拉刀进行设计研究，并对透平端轮盘枞树型叶根榫槽加工的拉刀进行了强度分析。

首先，需要选择适应的材料来对轮槽进行设计，以满足轮槽加工的要求，本文介绍了榫齿拉刀设计的工艺方法，拉刀的结构形式,拉削方式的选择及拉刀的分工,拉刀齿形公称尺寸和公差的确定等方面的问题。

本文介绍的榫齿拉刀的设计能提高轮盘榫齿的加工质量，并且对所涉及的榫齿拉刀进行有限元分析，可较精确地掌握刀具上各点的受力情况，了解刀具内部应力的分布规律，从而大大缩短了生产准备周期，节约设计人力资源消耗。

毕业论文关键词：榫齿拉刀；轮盘轮槽；强度分析；拉刀设计；拉削

Abstract As China's machinery manufacturing industry and the rapid development of the domestic power industry, also increasing the capacity of the turbine, the turbine engine is the core manufacturing, grooving wheel turbine manufacturing technology is also one of the key factors, in order to meet the requirements of modern industrial development, the design of the turbine industry and processing capacity of a higher demand.

Based on the turbine wheel and the structural characteristics of leaves on the line analysis, and then on the fir-tree serration broach design studies, and roulette tongue and groove fir tree blade root machining broaches strength analysis carried out.

First, you need to select the material to adapt to right wheel grooves are designed to meet the requirements of grooving wheel in serration broach manufacturing, broach article describes the specific manufacturing process method, according to the surface to be machined groove birch Technical requirements worm plate material chemical composition and mechanical properties, the material identified broach, broaches structural form, broaching mode selection and pision broach, broaches tooth nominal dimensions and tolerances to determine other issues .

This article describes the design of serration broach roulette serration can improve processing quality, and is involved in the serration broach the finite element analysis, the tool can be more accurately grasp the points on the force, to understand the internal tool stress distribution, thus greatly reducing the production preparation period, saving design human resource consumption.

Keywords: serration broaches, roulette wheel slot, strength analysis, design methods.

目  录

第一章 绪论1

   1.1 研究背景与意义1

1.2 国内外研究现状2

  1.2.1燃气轮机轮盘榫齿加工国内外现状.2

  1.2.2燃气轮机轮盘拉刀设计及制备现状.5

1.3本课题研究的内容和方法.6

1.4本章小结.7

第二章 燃气轮机轮盘榫槽拉削工艺制定与规划.8

   2.1总体工艺制定.8

     2.1.1轮盘榫槽材料及加工工艺流程8

      2.1.2拉削机床的选择.9

      2.1.3拉刀总体形式选择.9

      2.1.4拉刀的固定.10

2.2拉削方式的选择.11

  2.2.1分层拉削.11

  2.2.2分块拉削.12

  2.2.3轮槽拉削方式.13

2.3本章小结.15

第三章 拉刀总余量分配与结构设计计算.16

3.1拉刀总余量分配.16

3.2粗拉削余量分配.18