基于PROE的螺旋机构的建模与分析 - 图文

攀枝花学院专科毕业论文（设计）

基于Pro/E的CA6140A机床螺旋机构的

建模与分析

学生姓名： 伏 蓉 学生学号： 200921205010 院（系）： 工程技术学院 年级专业： 09级机电一体化技术 指导教师： 张健 讲师 助理指导教师：

二零一二年五月

攀枝花学院专科毕业论文（设计） 摘要

摘 要

螺旋传动是一种重要的传动方式，每个机床都有螺旋传动机构。机床中运用的一般是传导螺旋和调整螺旋，传导螺旋用在机床的刀架和工作台的进给机构中，而调整螺旋起到微调的作用。

典型的螺旋运动方式是丝杠转动、螺母移动。利用传动均匀、平稳、准确的优点，以传递运动为主，有较高的传动精度，可承受较大的轴向负荷，主要用于高速回转、连续工作、要求高效率、高精度的场合，如机床的刀架和工作台的进给机构。

本文主要研究螺旋传动及其在机床上的应用，将机床中的螺旋机构运用PRO/E绘图软件进行建模，为机床螺旋机构的设计及优化提供一定的理论依据。

关键词 机床，螺旋机构，PRO/E软件，建模，机构分析

I

攀枝花学院专科毕业论文（设计） ABSTRACT

ABSTRACT

Screw drive is an important transmission model; each machine has a screw drive mechanism. Machine is generally conducted in the use of screw and adjusts the screw, screw transmission used in the machine tool holder and the table feed mechanism, while fine-tuning adjustment screw play a role.

A typical way to spread spiral screw rotation, the nut moves. Using transmission uniform, smooth, accurate and advantages, the main motion to pass, a higher transmission accuracy, and can bear large axial load, mainly for high-speed rotation, continuous worλ, requiring high efficiency, high precision of the occasion, If the machine tool holder and the table body institutions.

This main screw drive and its application in the machine, the machine screw mechanism in the use of PRO / E model mapping software on the line, and their bodies on the line some brief analysis for the machine design and optimization of screw mechanism provides a theoretical basis.

Λeywords Machine tools, screw mechanism, PRO/E software, modeling, institutional analysis

II

攀枝花学院专科毕业论文（设计） 目录

目 录

摘 要 ........................................................................................................................... I ABSTRACT ...................................................................................................................... II

1 绪论 ......................................................................................................................... 1

1.1 课题的提出及研究意义 .................................................................................................. 1 1.2 国内外的应用现状及发展趋势....................................................................................... 1 1.3 CA6140A机床的螺旋机构模型 ....................................................................................... 2 1.4 机床中的螺旋机构传动装置........................................................................................... 2 1.5.螺旋机构的研究现状 ...................................................................................................... 3 1.6 论文的主要工作 .............................................................................................................. 4

2 机床简介 ................................................................................................................. 5

2.1 CA6140A卧式车床概述 ................................................................................................... 5 2.2 CA6140A卧式车床的技术资料 ....................................................................................... 5 2.3 CA6140A卧式车床结构部件及功能 ............................................................................... 5 2.4 CA6140A卧式车床的主要参数 ....................................................................................... 6 2.5 CA6140A机床运动和传动 ............................................................................................... 7 2.5.1 机床的运动 ........................................................................................................... 7 2.5.2 机床的传动 ........................................................................................................... 7 2.6 机床的传动系统 .............................................................................................................. 7

3 螺旋机构的分析 ..................................................................................................... 8

3.1 螺纹的形成 ...................................................................................................................... 8 3.2 螺纹基本要素 .................................................................................................................. 8 3.3 螺旋传动的工作原理 .................................................................................................... 11 3.4 常用设备的螺旋机构 .................................................................................................... 11 3.5 螺旋传动的类型和特点 ................................................................................................ 11 3.6 螺旋传动的受力分析 .................................................................................................... 12

4 基于Pro/E的建模 ............................................................................................... 14

4.1 PRO/E简介 ..................................................................................................................... 14 4.2 Pro/E软件模块组成 ..................................................................................................... 14 4.3 主要特征 ........................................................................................................................ 15 4.4 Pro/e历史特点和应用现状 ......................................................................................... 15 4.5 基于特征的参数化造型 ................................................................................................ 16 4.6 Pro/e应用未来展望 ..................................................................................................... 17

5 机床螺旋机构建模 ............................................................................................... 19

5.1 研究对象 ........................................................................................................................ 19 5.2 建模 ................................................................................................................................ 19

6 机床CA6140A螺旋机构的分析 ........................................................................... 23

6.1 机床CA6140A螺旋副材料的确定 ................................................................................ 23 6.2 机床CA6140A螺纹公差 ................................................................................................ 23 6.3 影响螺旋传动精度的因素及改进措施......................................................................... 23

攀枝花学院专科毕业论文（设计） 目录

6.3.1 传动误差（位移误差） ..................................................................................... 23 6.3.2 空程误差 ............................................................................................................. 24 6.4 消除螺旋传动空回的方法............................................................................................. 24 6.5螺纹牙形对螺旋机构的影响.......................................................................................... 25 6.6螺旋机构的失效分析 ..................................................................................................... 25 6.6.1自锁条件分析 ...................................................................................................... 26

7 结论 ....................................................................................................................... 30 参考文献 ..................................................................................................................... 31 致 谢 ......................................................................................................................... 32

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