文档介绍：目录
1 绪论 1
2 堆焊简介 4
3 总体方案设计 8
动力头的总体设计要求 8
动力头的设计 8
4 蜗轮蜗杆的传动设计 11
高速级传动设计 11
低速级传动设计 16
5 轴的校核与设计 21
轴的设计 21
输入轴 21
输出轴 23
中间轴的校核 25
6 滚动轴承的选择及校核计算 32
输入轴上的轴承 32
输出轴上的轴承 33
7 键连接的选择及校核计算 37
8 联轴器和箱体的设计计算 39
联轴器 39
41
9 减速器结构与润滑、密封方式的概要说明 43
10 结论 45
参考文献 46
致谢 47
大齿轮轮芯堆焊机动力头设计
摘要:大齿轮是由外齿圈、轮芯和键组合而成,齿圈为啮合部分所以采用优质钢,轮芯为铸造件用键连接齿轮轴。外齿圈和轮芯采用过盈配合,用温差法装配。轮芯与外齿圈无相对运动、无磨损。当出现更换外齿圈或维修齿轮轴上零件等情况时,需要将齿轮解体,此时外齿圈将从轮芯外表面中被强行拉出,配合面就会被破坏,齿轮轮芯也容易受到磨损。为了不影响齿轮的工作状态,轮芯外表面需堆焊及机加工,恢复轮芯外表面及其光洁度。同样轮芯内孔损伤也需用堆焊的方法修复。本文所设计堆焊机动力头就用于此工序
轮芯堆焊机主要由动力头、尾架、焊接小车、底座、导轨及控制箱六大部分组成。本文设计轮芯堆焊机动力头,工作重点在于减速器的设计。首要目的是满足基本的使用性能,其次是在此基础上尽量减少减速器的体积和重量使其结构紧凑、加工制造方便。动力头减速器的结构有很多种类,本文首要满足的性能是速比和强度,之后再从装备方便、缩小体积、降低成本等方面加以考虑。设计后的减速器应具有容易生产、结构简单、可实用性、安装方便、成本低的特点。
关键词:轮芯;堆焊;动力头;减速器
Wheel center welding machine power head design
Abstract :From outside the ring gear, wheel core and bination engagement ring is part of it using high quality steel, round core for the casting gear shaft with key the ring and the wheel core by interference fit, with the temperature difference method assembly. Wheel core and outer ring is no relative movement, no wear. When replacement or repair outside the ring gear shaft parts, etc., you need to gear collapse, this time from the outer ring round the outer surface of the core was forcibly pulled out, with the surface will be destroyed, gear wheel core is also easy by wear and tear. In order not to affect the working condition of gears, wheel outer surface of the core needs welding and machining to restore wheel core and the outer surface finish. Within the same round hole injury also used as a core method of welding repair. This power head welding machine is designed to be used for this process
This designs the gear of wheel center welding machine, the focus is the design of transmission and shaft. The primary purpose of the work is to meet basic performance, second is on this basis to reduce