机械5

摘要 随着电焊机的应用需求，手动电焊机因为其劳动强度大，焊接效率低，工作环境恶劣，对人体伤害大等缺点，逐渐被自动电焊机所取代。自动电焊机的主要体现在自动送丝机构，焊接工位自动转换机构，工件自动装卡机构，工件焊接自动化系统，系统集成控制等，其中自动送丝机构是实现自动化的重要环节。 因此，本设计针对自动电焊机的主要传动部件，与送丝机构而进行设计，设计中完成了自动电焊机丝杠传动零部件的设计计算与选型，以及自动电焊机自动送丝机构的设计计算，实现各传动零部件的良好运行，使其不动时实现自锁功能在焊接过程中，自动电焊机实现自动送丝功能。 关键词：自动电焊机；丝杠传动；送丝机构 ABSTRACT With the applicatio
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n. keywords: Automaticwelder; Lead screw drive; Wire feedi
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nism 目录 第1章绪论1 1.1电焊机的发展背景和特点1 1.2电焊机自动送丝机构2 1.2.1自动送丝机构的现状与特点2 1.2.2设计的目标要求与内容2 第2章总体方案设计3 2.1自动电焊机总体设计3 2.2自动电焊机自动送丝机构方案设计3 第3章关键零部件的设计5 3.1丝杠和导轨选型5 3.1.1自动电焊机z向结构设计5 3.1.2 Z向电机选择8 3.2 X向丝杠传动设计11 3.2.2丝杠设计11 3.2.3 X向电动机选择14 3.2.4联轴器的选择15 3.3电焊机自动送丝机构设计15 3.3.1自动送丝机结构从动轮设计15 3.3.2自动送丝机构主动轮设计16 3.3.3送丝电动机选择16 3.3.4主动轮轴的设计17 3.3.5键的选择与校核19 3.3.6轴承的选择19 3.3.7轴与电机连接19 3.3.8自动送丝机构图19 第4章自动电焊机整体装配图21 4.1自动电焊机主视图21 4.2自动电焊机左视图22 4.3自动电焊机俯视图23 结论24 致谢25 参考文献26