基于PLC的车身点焊控制系统应用研究
摘要
随着我国产业的发展，焊接自动化流水线逐渐取代了手工焊接流水线，既能提升作业速度，又能大幅节约制造费用，并被普遍应用于当前的汽车业。文章主要是从车间生产过程中的现实问题出发，在满足安全要求的情况下，利用 PLC控制技术，将现场现实问题高效地解决。本文介绍了以 PLC为核心的轿车车体焊接流水线的组成、车体焊接流水线技术的发展和应用情况。在深入剖析了汽车焊装流水线的各个重要部件之后，对其焊接控制的内容及行动的符合条件展开了深入的探讨，根据生产的需要及工艺生产的特征，在现实的生产调试中，工位急停造成的气压焊枪炸枪问题、弧焊机器人在焊接时撞枪问题、显示屏焊枪的修磨数量与现实不相符问题等，找到了相应的对策，并提出了相应的设计方案。本文所提出的方法在实际的工艺中得到了运用，通过在工厂中的实践证明，该方法满足了工艺的所有需要，并取得了较好的效果。
关键词：PLC；焊装机器人；炸枪；撞枪；现场总线
Application Research of PLC Based Body Spot Welding Control System
ABSTRACT
With the development of China's industry, automatic welding assembly lines have gradually replaced manual welding assembly lines, which can not only improve operation speed, but also significantly save manufacturing costs, and are widely used in the current automotive industry. This article mainly starts from the practical problems in the workshop production process, and utilizes PLC control technology to efficiently solve on-site practical problems while meeting safety requirements. This article introduces the composition of the car body welding assembly line based on PLC, as well as the development and application of the car body welding assembly line technology. After in-depth analysis of each important component of the automobile welding assembly line, in-depth discussion was conducted on the content of its welding control and the compliance conditions for its actions. According to the needs of production and the characteristics of process production, in practical production debugging, the corresponding countermeasures were found for the problems of gas pressure welding gun explosion caused by sudden stop of the work station, the problem of arc welding robot bumping the gun during welding, and the problem of inconsistency between the repair quantity of the display screen welding gun and reality, The corresponding design scheme is proposed. The method proposed in this article has been applied in practical processes. Through practice in factories, it has been proven that this method meets all the needs of the process and has achieved good results.
Key words: PLC；Welding robot; Bomber gun; Collision gun; field bus
目 录
ABSTRACT 4
1 绪论 1
1.1 研究背景和意义 1
1.2 车身焊装生产线国内外应用现状研究 1
1.2.1 车身焊装生产线国外应用研究现状 1
1.2.2 车身焊装生产线国内应用研究现状 2
2 车身点焊焊装生产线软硬件系统研究 3
2.1 点焊控制系统硬件研究 3
2.2 点焊控制系统软件研究 3
3 焊装生产线控制系统程序规划 5
3.1 点焊控制系统 PLC程序规划 5
3.2 往复杆程序 6
3.3 工作站程序 6
3.4 机器人程序 6
3.5 面向对象编程的优越性 7
4 焊装线系统的控制逻辑分析 8
4.1 整线控制逻辑 8
4.2 焊装线关键设备的控制逻辑 8
4.3 机器人单元控制 9
5 点焊控制系统实际问题优化方案设计与实现 10
5.1 工位急停导致气动焊枪炸枪问题 10
5.2 弧焊机器人焊接时撞枪问题解决 11
5.3 焊枪修磨有关实际问题解决 11
6 结论 12
参考文献 13
致谢 14
摘要
随着我国产业的发展，焊接自动化流水线逐渐取代了手工焊接流水线，既能提升作业速度，又能大幅节约制造费用，并被普遍应用于当前的汽车业。文章主要是从车间生产过程中的现实问题出发，在满足安全要求的情况下，利用 PLC控制技术，将现场现实问题高效地解决。本文介绍了以 PLC为核心的轿车车体焊接流水线的组成、车体焊接流水线技术的发展和应用情况。在深入剖析了汽车焊装流水线的各个重要部件之后，对其焊接控制的内容及行动的符合条件展开了深入的探讨，根据生产的需要及工艺生产的特征，在现实的生产调试中，工位急停造成的气压焊枪炸枪问题、弧焊机器人在焊接时撞枪问题、显示屏焊枪的修磨数量与现实不相符问题等，找到了相应的对策，并提出了相应的设计方案。本文所提出的方法在实际的工艺中得到了运用，通过在工厂中的实践证明，该方法满足了工艺的所有需要，并取得了较好的效果。
关键词：PLC；焊装机器人；炸枪；撞枪；现场总线
Application Research of PLC Based Body Spot Welding Control System
ABSTRACT
With the development of China's industry, automatic welding assembly lines have gradually replaced manual welding assembly lines, which can not only improve operation speed, but also significantly save manufacturing costs, and are widely used in the current automotive industry. This article mainly starts from the practical problems in the workshop production process, and utilizes PLC control technology to efficiently solve on-site practical problems while meeting safety requirements. This article introduces the composition of the car body welding assembly line based on PLC, as well as the development and application of the car body welding assembly line technology. After in-depth analysis of each important component of the automobile welding assembly line, in-depth discussion was conducted on the content of its welding control and the compliance conditions for its actions. According to the needs of production and the characteristics of process production, in practical production debugging, the corresponding countermeasures were found for the problems of gas pressure welding gun explosion caused by sudden stop of the work station, the problem of arc welding robot bumping the gun during welding, and the problem of inconsistency between the repair quantity of the display screen welding gun and reality, The corresponding design scheme is proposed. The method proposed in this article has been applied in practical processes. Through practice in factories, it has been proven that this method meets all the needs of the process and has achieved good results.
Key words: PLC；Welding robot; Bomber gun; Collision gun; field bus
目 录
ABSTRACT 4
1 绪论 1
1.1 研究背景和意义 1
1.2 车身焊装生产线国内外应用现状研究 1
1.2.1 车身焊装生产线国外应用研究现状 1
1.2.2 车身焊装生产线国内应用研究现状 2
2 车身点焊焊装生产线软硬件系统研究 3
2.1 点焊控制系统硬件研究 3
2.2 点焊控制系统软件研究 3
3 焊装生产线控制系统程序规划 5
3.1 点焊控制系统 PLC程序规划 5
3.2 往复杆程序 6
3.3 工作站程序 6
3.4 机器人程序 6
3.5 面向对象编程的优越性 7
4 焊装线系统的控制逻辑分析 8
4.1 整线控制逻辑 8
4.2 焊装线关键设备的控制逻辑 8
4.3 机器人单元控制 9
5 点焊控制系统实际问题优化方案设计与实现 10
5.1 工位急停导致气动焊枪炸枪问题 10
5.2 弧焊机器人焊接时撞枪问题解决 11
5.3 焊枪修磨有关实际问题解决 11
6 结论 12
参考文献 13
致谢 14
