Base coordinate system creation method for numerical control equipment group collaborative production line installation

Abstract

The invention discloses a base coordinate system creating method for numerical control equipment group collaborative production line installation, which comprises the following steps of: measuring coordinates of a plurality of points on the upper surface of a square box leveled by a gradienter by a spatial position measuring instrument, fitting a reference plane of a production line, measuring coordinates of center points of all foundation embedded plates on site, and establishing a base coordinate system; fitting a course line of the production line; projecting the course line to a reference plane to serve as a Y-direction vector of the base coordinate system, obtaining a normal vector of the reference plane to serve as a Z-direction vector of the base coordinate system, and performing cross product operation on the Y vector and the Z vector to obtain an X-direction vector of the base coordinate system; measuring coordinates of center points of foundation embedded plates of two pieces of reference equipment on two sides of the course line, projecting a straight line formed by the two points to a reference plane, and enabling the straight line to intersect with the projection of the course line to obtain an original point of a base coordinate system; and determining the pose T of the base coordinate system by using the direction vector and the original point. The method can effectively determine the optimal standard for installation of the production line, and is used for digital accurate installation and adjustment of numerical control equipment groups.

Description

technical field [0001] The invention relates to the technical field of numerical control equipment installation and adjustment, in particular to a method for creating a base coordinate system for the collaborative production line installation of numerical control equipment groups. Background technique [0002] At present, with the rapid development of digital factory technology, the digital equipment system has evolved from the previous mode of single CNC equipment for parts processing to the current CNC equipment group collaborative production line for large parts pose adjustment, precise assembly and finishing. Mode, the assembly and processing coordinate data of components is not based on the equipment coordinate system of a single CNC equipment, but is based on the common coordinate system of the production line, that is, the base coordinate system. The coordinated movement of the CNC equipment group under the common coordinate system controls the pose of the component a...

AI Technical Summary

Problems solved by technology

[0003] The installation of the traditional CNC equipment group collaborative production line is to use a ruler to measure the distance to determine the installation position of the CNC equipment group and adjust the parallel relationship. Not only the installation efficiency is low and the accuracy is poor, but also the single-axis CNC equipment and the Transfer equipment for precise adjustment of spatial position

With the development of digital measurement technology, spatial position measuring instruments can meet the high-efficiency and high-precision requirements for the installation of CNC equipment groups in coordination with the production line, but it is necessary to create the base coordinate system for production line installation. Prepare a reference CNC equipment, use the spatial position measuring instrument to measure the motion characteristic data of the CNC equipment, determine the coordinate system of the CNC equipment in the coordinate system of the measurement system, according to the position and orientation of the reference CNC equipment coordinate system in the digital model and the base coordinate system of the production line relationship, and then determine the base coordinate system of the production line in the coordinate system of the measurement system. The disadvantage of this method is that the size of the reference CNC equipment of the CNC equipment group is small, and the cooperative production line of the CNC equipment group generally has a long heading span, and the equipment foundation The actual installation position of the buried plate is less accurate than the theoretical position of the digital model. The base coordinate system created by this method is used as a reference to install the rest of the equipment in the production line. The case of edge interference

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