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魏强, 刘凤财, 苏再为, 林彦龙. 基于点云测量的运载火箭异形管路数字化制造技术[J]. 深空探测学报(中英文), 2021, 8(1): 34-41. DOI: 10.15982/j.issn.2096-9287.2021.20200011
引用本文: 魏强, 刘凤财, 苏再为, 林彦龙. 基于点云测量的运载火箭异形管路数字化制造技术[J]. 深空探测学报(中英文), 2021, 8(1): 34-41. DOI: 10.15982/j.issn.2096-9287.2021.20200011
WEI Qiang, LIU Fengcai, SU Zaiwei, LIN Yanlong. Digital Manufacturing Technology of Special-shaped Pipe of Launch Vehicle Based on Point Cloud Measurement[J]. Journal of Deep Space Exploration, 2021, 8(1): 34-41. DOI: 10.15982/j.issn.2096-9287.2021.20200011
Citation: WEI Qiang, LIU Fengcai, SU Zaiwei, LIN Yanlong. Digital Manufacturing Technology of Special-shaped Pipe of Launch Vehicle Based on Point Cloud Measurement[J]. Journal of Deep Space Exploration, 2021, 8(1): 34-41. DOI: 10.15982/j.issn.2096-9287.2021.20200011

基于点云测量的运载火箭异形管路数字化制造技术

Digital Manufacturing Technology of Special-shaped Pipe of Launch Vehicle Based on Point Cloud Measurement

  • 摘要: 针对目前运载火箭取样导管与箭体总装串行制造模式严重制约箭体总装周期问题,提出了利用激光扫描方法建立不同箭体实物点云模型,依据不同箭体的装配基准,从不同箭体实物点云模型中提取数据建立基准平面、基准圆心,利用基准对齐实现不同箭体实物点云模型数字化装配,并采用粗匹配、细匹配等算法对基准建立、基准对齐进行了分析。以装配后的点云模型为基础,按“点、线、面”方式建立导管模型用于后续加工。成功实现了运载火箭取样导管数字化预先制造。

     

    Abstract: In view of the current manufacturing model of launch vehicle pipe sampling and final assembly, it severely restricts the assembly period of the launch vehicle. In this paper, the use of laser scanning method is proposed to build a physical point cloud model of different arrow body. According to the assemble benchmarks based on different rocket body, the data is extracted from the physical point cloud models of different rocket body to establish the datum plane and datum circle center, using benchmark alignment to realize digital assembly of point cloud models of different arrow body, and using coarse matching, fine matching and other algorithms to analyze the benchmark establishment and benchmark alignment. Based on the assembled point cloud model, according to the "point, line, surface" way to establish the catheter model for subsequent processing. The digital pre-manufacture of the carrier rocket sampling catheter is realized sucessfully.

     

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