汽车后桥直焊缝焊接专机设计【优秀课程毕业设计含4张CAD图纸+带开题报告+外文翻译】
汽车后桥直焊缝焊接专机设计
摘 要
中国汽车工业经过60年的发展,经过数代人的努力从无到有并逐步走向国际化。2009年我国汽车产量突破1379.10万辆,超过第二名日本和第三名美国产量之和。(日本为793万辆,美国为570万辆)。中国已经成为了全球汽车生产第一大国。作为汽车制造之中最有代表性的3大工艺(焊装、油漆、总装)之一的焊接工艺也得到了长足发展,逐步达到国际先进水平。在专业性强、而且有规则焊道的零件中使用焊接专机不仅能达到焊接工艺的要求,而且经济。为了满足国内外需求,我国汽车制造业需要大量自动化装备来提高生产效率减轻工人工作量。
本设计为汽车后桥直焊缝焊接专机设计,设备包括机械结构设计。焊接汽车后桥的方法是二氧化碳保护焊法,焊接长度为270mm,焊接速度可达到300一500mm/min。本焊接专机的机械部分设计包括有焊接小车、床身、丝杠传动机构、工件支架、气缸支架、顶尖等部分。内容涉及到气缸、电动机、减速机、滚珠螺杆等。其中焊接小车是本次设计的重点,小车带动焊抢作直线运动来完成直焊缝的焊接任务,而小车是由电机通过一系列传动驱动的。出于对工艺要求和工作效率等多方面因素的考虑,设计出了双焊枪运动机构,使之在一次操作可以同时完成两道直焊缝的焊接任务。
关键词:汽车后桥;焊接专机;焊接小车;丝杠传动
Abstract
After 60 years development, China's automobile industry has gone from scratch and gradually to the internationalization. In 2009 China has produced more than 13.791 million vehicles. Production more than the sum of Japan and the United States. China has become the world's largest auto production. As the the most representative three process in car manufacturing industry (welding, painting, assembly).The welding technology has also been rapid development, and gradually reached the international advanced level. In professional, and there are regular weld bead parts used in special welding machine not only can meet the requirements of welding process, but also economy. In order to meet the needs of domestic and international, China's auto manufacturing industry needs a lot of automation equipment to improve production efficiency and reduce the workload of workers.
The design of the automobile rear axle straight seam welding machine, including mechanical structure design. Welding vehicle rear axle method is the carbon dioxide welding method, welding speed can reach 0.3 0.5m/min. This welding machine mechanical parts of the design including welding carriage, bed, lead screw transmission mechanism, fixture and other parts. The contents relate to the cylinder, the top, motor, reducer, ball screw, etc.. The welding tractor is the focus of this design, considering the various factors of the technological requirements and the efficiency design double gun movement mechanism, make in one operation can be completed at the same time, two straight seam welding tasks. Motor output speed through the reducer to drive the screw rotation, the screw on the screw nut to drive the car to reach the welding task.
Keywords: automobile rear axle; welding machine; welding car;screw drive
目录
摘 要 I
Abstract II
第1章 绪论 1
1.1 课题研究的目的和意义 1
1.2 焊接设备的发展趋势及发展现状 1
1.2.1 国内焊接设备发展现状 2
1.2.2 国外焊接设备发展现状与趋势 3
1.3 课题研究内容及目标 4
第2章 汽车后桥直焊缝焊接专机整体设计方案 5
2.1 汽车后桥直焊缝焊接专机工作原理 5
2.2 焊接小车的工作原理及设计 6
2.2.1 工作原理 6
2.2.2 焊枪卡紧机构的设计 7
2.2.3 焊枪垂直运动系统的设计 7
2.2.4 弓形滑板的设计 8
2.2.5 小车尺寸结构的设计 9
2.2.6 送丝机构支架的设计 10
2.3 电动机与减速机的确定 11
2.4 滚珠螺杆滚珠螺母选择 13
2.5 防尘罩设计 13
2.6 工件支架的设计 14
2.7 托盘的设计 14
2.8 顶尖的选取 15
2.9 汽缸及其尾座的设计 15
2.10 床身的设计 16
第3章 关键零件校核 17
3.1 滚珠螺杆强度与刚度校核 17
3.1.1 滚珠螺杆强度校核 17
3.1.2 滚珠螺杆刚度校核 18
3.2联轴器的选择与校核 19
3.3减速器的校核 20
3.4键的选择与校核 20
3.5轴承的选择与校核 21
第4章 结论 23
参考文献 24
致谢 25
【详情如下】【需要咨询购买全套设计请加QQ1459919609】.bat
外文翻译.doc
小车.dwg
工件支架.dwg
文件清单.txt
气缸支架.dwg
汽车后桥直焊缝焊接专机设计.doc
汽车后桥直焊缝焊接专机设计开题报告.doc
直焊缝焊接专机装配图.dwg