面向最优匹配位置的大部件自动对接装配综合评价指标

发布时间：2018-05-27 17:14

本文选题：大型部件 + 对接装配　；参考：《机械工程学报》2017年23期

【摘要】：火箭、飞机、舰船等大型产品结构复杂,多为分段制造后进行总装对接,此类分段大部件对接质量直接影响总体装配质量。传统的对接装配工艺自动化程度低、过度依赖专用检具和人工经验。部件对接装配最佳匹配位置的确定,是提高大部件对接装配效率和质量关键之一,基于先进测量设备和自动化定位装备,建立面向大部件最优匹配位置的综合评价指标体系。首先,基于点集匹配、直线对齐、平面匹配和曲面匹配的数学模型,建立大部件对接结构中各关键特征的装配准确度评价指标;其次,从制造准确度和协调准确度两个方面构建大部件对接装配最优匹配位置的综合评价指标体系,为部件制造质量评估提供有效的评价方法,也为部件之间最优匹配位置求解提供目标;最后,基于实验室自主研发的大部件对接平台,以筒段模拟件对接为研究对象,验证了这一综合评价指标体系在指导大部件装配对接的有效性,与传统工艺相比,可直接保证最优对接位置,提高装配质量。
[Abstract]:The structure of rocket, aircraft, ship and other large products is complex, most of them are assembled and docked after subsection manufacture. The docking quality of this kind of segmented parts directly affects the overall assembly quality. Traditional docking assembly process automation degree is low, excessive reliance on special tools and manual experience. It is one of the key points to improve the efficiency and quality of the butt assembly of large parts to determine the optimal matching position of the parts. Based on the advanced measuring equipment and the automatic positioning equipment, a comprehensive evaluation index system for the optimal matching position of the large parts is established. Firstly, based on the mathematical models of point set matching, straight line alignment, plane matching and surface matching, the assembly accuracy evaluation indexes of key features in the docking structure of large parts are established. From two aspects of manufacturing accuracy and coordination accuracy, a comprehensive evaluation index system for the optimal matching position of butt joint assembly of large parts is constructed, which provides an effective evaluation method for component manufacturing quality evaluation. It also provides the goal for solving the optimal matching position between components. Finally, based on the large component docking platform independently developed in the laboratory, the paper takes the barrel analog docking as the research object. The effectiveness of the comprehensive evaluation index system in guiding the assembly and docking of large parts is verified. Compared with the traditional technology, the optimal docking position can be directly guaranteed and the assembly quality can be improved.
【作者单位】：上海交通大学机械系统与振动国家重点实验室;上海交通大学上海市复杂薄板结构数字化制造重点实验室;
【基金】：国家重点基础研究发展计划资助项目(973计划,2014CB046600)
【分类号】：TG95

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