| 复杂薄壁空间曲线焊缝的变形控制 |
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| 引用本文： | 王俊恒,高洪明,张广军,谢美蓉,吴林. 复杂薄壁空间曲线焊缝的变形控制[J]. 焊接学报, 2007, 28(3): 77-80 |
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| 作者姓名： | 王俊恒 高洪明 张广军 谢美蓉 吴林 |
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| 作者单位： | 哈尔滨工业大学,现代焊接生产技术国家重点实验室,哈尔滨,150001;首都航天机械公司,北京,100076 |
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| 摘 要： | 根据某产品空间曲线焊缝壁薄、密集、受热易变形,对管间隙及错边量要求高的特点,对其结构及其受力受热情况,及弧焊变形机理进行了深入地研究,并提出了抑制其变形的"分段线性控制"策略.依据焊缝间隙与焊接电流的对应关系,配合机器人虚拟ARC-ON/OFF信号与PLC电流分段线性控制信号,实现了连续焊接时电流的分段线性控制.结果表明,该控制策略行之有效,成功地应用于该焊件的实际生产,提高了产品的质量及生产效率.
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| 关 键 词： | 空间曲线焊缝 弧焊机器人 可编程控制器 电流分段线性控制 |
| 文章编号： | 0253-360X（2007）03-077-04 |
| 收稿时间： | 2005-12-12 |
| 修稿时间： | 2005-12-12 |
Deformation control of complex space curve welded joint |
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| WANG Junheng,GAO Hongming,ZHANG Guangjun,XIE Meirong and WU Lin. Deformation control of complex space curve welded joint[J]. Transactions of The China Welding Institution, 2007, 28(3): 77-80 |
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| Authors: | WANG Junheng GAO Hongming ZHANG Guangjun XIE Meirong WU Lin |
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| Affiliation: | National Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001, China,National Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001, China,National Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001, China,Capital Aerospace Machinery Corporation, Beijing 100076, China and National Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001, China |
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| Abstract: | A type work-piece has some features such as thin wall,dense space curve welded joint,easy to deform when heated,a high demand of gap and unfitness and so on.According to the structure characteristic and the states of heating and stress for the welding parts,the distortion mechanism of the work-piece has been further investigated and subsection linear control strategy for current to suppresses the distortion has been proposed.Based on the relationship between the gap and the welding current,the subsectioo linear control strategy for the current has been implemented by using the signals of virtual ARCON/OFF companied by the current-control signals produced by PLC.It has been approved that the control strategy can be successfully applied in the actual welding production and improves the quality and productivity of the work-piece. |
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| Keywords: | space curve welded joint arc welding robot PLC subsection linear current control |
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