Abstract: In the application of Reverse Engineering (RE) of part holes floating position error detection,an algorithm of Holes Position Tolerance border Template (HPTT) reasonable registration with the measured holes was presented.Based on the plane-floating characteristics of position tolerance,the measured holes and HPTT were projected to the baseline plane to build the influence regions,regional centers of measured holes and the projection points of hole centerlines in HPTT.The definitions of distance measure of template hole projection centers to the influence region centers of measured holes and the distance weighting factor were established.By a weighted Levenberg-Mar (L-M) quardt -iterative process of corresponding points in the baseline plane,the reasonable registration of HPTT and measured holes was achieved.An example was conducted to verify the feasibility and availability of the proposed algorithm.

Key words: reverse engineering, float position error, holes position tolerance border template, reasonable registration

摘要： 在应用逆向工程技术对零件孔浮动位置度误差的检测中,提出一种孔位置度公差边界模板与被测孔的配准算法。根据位置度公差的平面浮动特点,将被测孔与孔公差边界模板向基准平面投影,建立被测孔的平面影响区域、区域中心以及边界模板中各孔中心线在基准平面的投影。定义了模板孔投影中心到被测孔影响区域中心的距离测度和相应的权重系数。结合对应点的加权利弗博格—马夸特迭代计算,实现了孔位置度公差边界模板与被测孔的合理配准。通过实例验证了算法的可行性和有效性。

关键词: 逆向工程, 浮动位置度误差, 孔位置度公差边界模板, 合理配准