摘要：在我国，焊接变位机在制造业中已经变成一种不可缺少的设备，在焊接领域把他划为焊接辅机。近十年来，在我国的工程机械行业，焊接变位机已经有了较大的发展，并取得了广泛的应用。使用焊接变位机械可缩短焊接辅助时间，提高劳动生产率，减轻工人劳动强度，保证和改善焊接质量，并可充分发挥各种焊接方法的效能。随着计算机技术不断向智能化发展，动控制和信息技术在制造业中的广泛应用，焊接变位机也朝着智能化、多功能化、大型化、集成化、高精度、高可靠度方向发展。本设计针对5吨装载机前车架工件装配和焊接，说明了L型双回转焊接变位机的组成及结构。其中它的回转传动机构和L臂结构是本次设计的核心部分，主要涉及到各种传动方式的选择搭配和设计以及L臂的结构设计和强度计算等。36200
毕业论文关键词：焊接变位机；5吨级前车架；回转传动机构；L臂结构设计；
Design of Rotary Transmission Mechanism of the 5-ton Front Frame Parts Welding Positioner
Abstract：
In our country, the welding positioner has become a kind of indispensable manufactural equipment, designated as welding assistant machine. In the last decade, this product has developed a lot in our engineering and mechanical area of our country, and also being widely applied. The usage of welding positioner can shorten the welding auxiliary time, improve the working efficiency, reduce the working intensity, insure and improve the welding quality, and give a full play to the performance of various welding methods. With the computer technology developing to be more intelligent, and dynamic control with information technology being wildly used in the manufacture, the welding positioner is also developing to be intelligent, multi-functional, large-scale, compositive, high accuracy and dependable. This work of design aiming to the assembly and welding of the 5-ton front frame parts, it explains the composition and structure of the L-type dual-rotary welding positioner. Its rotary transmission mechanism and the L-arm structure is a core part of this design, it mainly involve the choice and design of various transmission methods and design as well as L-arm with the structural design and strength calculation.
Key words:welding positioner;5-ton front frame parts;rotary transmission mechansim;
目录
1.绪论..1
1.1焊接变位机的概述.1
  1.2焊接变位机的性能.1
1.3国内外焊接变位机的发展.2
  1.3.1国内外焊接变位机的发展2
  1.3.2国内外焊接变位机的发展2
1.4焊接变位机主要参数. .5
2.焊接变位机的型式结构及方案的选定及计算.6
2.1焊接变位机的型式结构选定..6
  2.2方案的选定与计算.8 
    2.2.1前车架焊接要求..8
    2.2.2传动设计..8
2.2.3自由度设计9
2.2.4功能设计.10
2.2.5电机的选定及功率估算.10
2.2.6 传动系统中各部件的传动比的分配12
3.焊接变位机主要结构设计.14
3.1 L臂的总体设计14
  3.2 L臂的壁厚设计与校核14
  3.3回转工作台的设计 20
  3.4配重设计.. 20
  3.5大回转中心轴直径的确定 20
4.回转传动机构的设计计算.25
4.1摆线减速机的计算选用..25
4.2蜗轮蜗杆减速机的选用..27
4.3联轴器的设计计算30
    4.3.1联轴器型号的确定..30
    4.3.2联轴器的选型计算..31
4.4回转支承的设计计算.31
    4.4.1回转支承选型计算的方法..31
    4.4.2小回转支承的选型计算.33
4.4.3大回转支承的选型计算.36
  4.4.4齿轮圆周力的校核..38
4.5回转支承参数的选择39 5吨装载机前车架焊接变位机回转机构设计+CAD图纸:http://www.751com.cn/jixie/lunwen_34691.html