CATIA-based cross line creation method

Abstract

The invention discloses a CATIA-based cross line creation method. The method comprises the following steps of firstly, inputting a skin model with an assembly point position into a CATIA; creating a current coordinate system in the CATIA; converting the finally output coordinate and normal vector into a current coordinate system; then creating a cross line according to the reference coordinate axis; setting a current coordinate system, generating the dimension parameters required by the cross lines at the selected cross points in the skin model with the assembly point positions; sequentially selecting the reference coordinations, projecting the cross-shaped intersection point to the surface of the part to determine the punching position, and deteremining the punching direction by the feature point position information of the projected cross-shaped intersection line so as to realize the batch creation of the cross-shaped intersection line, thereby realizing the rapid creation of the cross-shaped intersection line at the plurality of hole positions on the part, facilitating the modeling operation of a designer and improving the working efficiency.

Description

technical field [0001] The invention relates to the technical field of assembly design, in particular to a CATIA-based method for creating cross-shaped intersection lines. Background technique [0002] When the skin parts are assembled and positioned, it is necessary to drill cross-shaped cross lines for assembly and positioning on the drilling template. The position of the positioning hole is determined by the intersection point and the hole axis. The shape is defined, but some of the parts do not have hole position information. At this time, it is necessary to create cross-shaped cross lines to mark the drilling positions on the parts. [0003] Cross-shaped cross-line modeling is to create a large number of hole points on the part entity according to the design, and create cross-shaped cross-lines for marking the drilling positions in batches. The angle of the cross-shaped cross-lines is based on the reference coordinate system. The default The length is 90 degrees, and t...

AI Technical Summary

Problems solved by technology

[0003] Cross-shaped cross-line modeling is to create a large number of hole points on the part entity according to the design, and create cross-shaped cross-lines for marking the drilling positions in batches. The angle of the cross-shaped cross-lines is based on the reference coordinate system. The default It is 90 degrees, and the length is given by the design, generally 10mm. However, for a long time, the cross line is drawn manually and repeatedly by the designer, which is not only low in work efficiency, but also prone to errors.

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