Motion Calibration Method Based on Catia Section

Abstract

The invention discloses a motion checking method based on a CATIA section, which includes: assembling a component to be checked, a side wall assembly and an interference checking component into a product component; creating a new carrier component in the product component, and establishing a second component on the carrier component An auxiliary surface and a second auxiliary surface; the product component is projected on the first auxiliary surface to obtain the component projection surface; in the component projection surface, the slit is cut along the direction perpendicular to the axis of the hinge, and the structure at the cut Projecting on the second auxiliary surface to obtain a split-section diagram; in the split-section diagram, the projection of the interference checking component is moved by a preset tolerance distance along the direction of the minimum distance of the split and in a direction perpendicular to the split; The center of the hinge is the origin, and the component to be checked is rotated to the maximum opening angle to form a boundary trajectory; the minimum distance between the boundary trajectory and the projection of the interference calibration component is measured to determine whether the minimum distance is within the preset range. This method has high precision for the motion check of four doors and two lids.

Description

technical field [0001] The invention relates to the technical field of component structure design, in particular to a CATIA-based motion checking method. Background technique [0002] The four doors and two covers of the car are relatively important rotating parts on the whole vehicle. The four doors and two covers are installed on the body through hinges to realize rotation. The structural design of the four doors and two covers directly determines whether the four doors and two covers will interfere with other parts during actual use, so the structural design of the four doors and two covers has a crucial impact on the performance of the vehicle. [0003] In the traditional technology, in order to test whether the structural design of the four doors and two covers is reasonable, the structural model of the four doors and two covers is imported into the three-dimensional digital model, and in the three-dimensional space, the four doors and two covers are rotated around the ...

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Problems solved by technology

[0004] However, in the above checking process, the structural dimensions of the four doors and two covers adopt the design dimensions, and the dimensions of the four doors and two covers usually have tolerances, so the actual structural dimensions of the four doors and two covers may not be equal to the design dimensions, resulting in the above The accuracy of the calibration process is low

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