METHOD FOR REALIZING THE SPATIAL TRANSFORMATION FROM MACHINING POINTS TO REFERENCE POINTS OF INSTALLATION SURVEY

摘要

Disclosed is a method for realizing the spatial transformation from machining points to reference points of installation survey. Presetting reference points of installation survey on a large-sized component, generating machining points by machining a metal element embedded in the large-sized component with a machine tool, providing optical measurement stations on both sides of the large-sized component to determine respectively the geometric relationships between the reference points of installation survey and the machining points on both side of the large-sized component, and then taking the reference points of installation survey as common points, integrating the coordinate values of the measurement points on the left and the right optical measurement stations to the coordinate system of either optical measurement stations by rotating and translating the space rectangular coordinates. Then, taking the machining points as common points, integrating the coordinate values of the measurement points on the optical measurement station to the geodetic coordinates by rotating and translating the space rectangular coordinates, thus acquiring the coordinates of the reference points of installation survey in the geodetic coordinates, which as the reference for on-site installating the large-sized component, are used for on-site installation and the control of various process after completed, including detection etc. The method enables the transformation from the on-site installation to the factory produced control points, and shortens the machine tool time, thus increasing the production efficiency of the large-sized component.