基于逆向工程的变截面涡旋盘快速精度诊断

发布时间：2018-12-29 17:13

【摘要】：针对变截面涡旋盘形状复杂程度高、传统检具检验难度大、检测精度低的特点,提出一种基于逆向工程的涡旋盘加工精度快速诊断方法。首先,建立基于Pro/E的变截面涡旋盘三维实体模型并将其作为参考模型;然后,利用ROMER六轴75系列绝对关节臂测量机测得加工涡旋盘的表面点云数据,精简后作为数字化模型,并将上述两个模型进行对比分析以获取涡旋盘的加工精度信息;最后,提出了基于图形制导的数模匹配原则以提高数字化模型与参考模型的对齐精度,采用3种方法降低数据处理误差。结果表明,变截面涡旋盘的加工精度和形位公差符合要求,为复杂型面机械产品加工精度诊断提供了准确、快捷和直观的方法。
[Abstract]:In view of the high complexity of the vortex disk with variable cross section, the difficulty of the traditional inspection tool and the low precision of the inspection, a rapid diagnosis method for the machining accuracy of the vortex disk based on reverse engineering is proposed. Firstly, the three-dimensional solid model of variable cross-section vortex disk based on Pro/E is established and used as the reference model. Then, the surface point cloud data of the vortex disk are measured by the ROMER six-axis 75 series absolute joint arm measuring machine, and the data are reduced as the digital model. The two models are compared and analyzed to obtain the machining accuracy information of the scroll disk. Finally, the principle of digital and analog matching based on graphic guidance is proposed to improve the alignment accuracy of digital model and reference model, and three methods are adopted to reduce the error of data processing. The results show that the machining accuracy and shape tolerance of the variable cross section vortex disk meet the requirements and provide an accurate, fast and intuitive method for the diagnosis of machining accuracy of mechanical products with complex profile.
【作者单位】：兰州理工大学机电工程学院;
【基金】：国家自然科学基金资助项目(51265027) 甘肃省高等学校基本科研业务费资助项目(1302ZTC034)
【分类号】：TH45

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