摘要

焊接变位机运动系统的设计是焊接变位机方案设计的核心内容，而焊接变位机运动自由度的确定是其前提条件。焊接变位机的关键是对变位机进行最佳位置焊接所需要的运动自由度的设计，如平动或转动的设计。
伸臂式焊接变位机是将工件回转，翻转，以便使工件上的焊缝置于水平和船形位置的机械装置。伸臂式焊接变位机是应用最广泛的一种焊接变位机，载重量一般不超过1吨。伸臂式焊接变位机的主体部分是翻转机构、回转机构、底座。本设计主要论述了焊接变位机械的组成，工作原理，重点讲述了其中的旋转减速机构的设计，旋转减速机构通过电机驱动，经过带传动，二级蜗杆蜗轮减速器的传动，起到减速和工作台的旋转运动的效果。包括了电机的选择，键的选择，轴承的选择等，还有带轮传动的计算，蜗轮蜗杆传动的计算，蜗杆轴的校核，轴承的校核等一系列设计计算。
焊接变位机有利于实现最佳位置的焊接过程、提高工作效率、降低疲劳强度并达到良好的焊缝成型。
 
关键词：焊接变位机械；带传动；蜗轮蜗杆传动；减速器
 Abstract
The design of the moving system of the welding positioner is the core content of the scheme design,but the system depends on the moving freedom`s certainty.The key part of the design of the welding positioner is the design of the moving freedom, according to the best welding position.
The main parts of the welding positioner include overturning machinery, circumgyrating machinery and the base.The arm-extending welding posioner is used most widely ,the load is less than one ton.The arm-extending welding positioner is the machine which makes the workpiece circumgyrate and overturn to make the welding line on the workpiece park the level direction and cymbate position. The welding positioner`s makeup and operating principle make up of the paper ,which disserates the design of the turning gear of the machine .The belt driving and two stage worm wheel retarder make the turning gear realize the man`s anticipating speed.The use of the techogenerator which will feed back the instant speed to the generator and then the controller will adjust the speed makes sure of the high welding line quality.
Welding positioner is in favor of the welding process to achieve the best possible position,improving efficiency,reducing the fatigue strength,and forming a good weld. 
 
Key words:welding posioner,belt drive,worm drive,reducer
 目录
摘要 I
Abstract II
目录 III
前言 1
第1章  绪论 2
1.1课题研究现状及意义 2
1.2焊接变位机械概述 2
1.3 论文主要研究内容 4
第2章  带传动的设计 6
2.1.电动机的选择 6
2.2.带传动的设计计算 6
第3章  旋转减速器设计 10
3.1传动比的分配 10
3.2二级蜗杆传动设计 10
3.3蜗杆轴的设计计算及校核 18
3.4轴承的选择及校核 23
3.5键的选择及校核 28
第4章  焊接变位机的总体设计 31
4.1 伸臂梁的设计计算： 31
4.2底座和箱体的简单设计 32
结论 33
参考文献 34
致谢 35

机械毕业设计|论文