Dimensional Measurement Method for Matching Relationship of Automobile Outer Covers

Abstract

The invention belongs to the technical field of precision measurement, and relates to a method for measuring the size of the matching relationship of an automobile outer cover; comprising the steps of: 1, making measurement points in CATIA software, making reflection lines, extracting R tangent lines, and performing curve method plane calculation Export the intersection point, import the point file made by CATIA into Metrolog software; 2. Use IDA offline programming, import the digital model of the product to be tested and the digital model of the bracket into IDA software, import the DMO file output by Metrolog into IDA, and create a measurement sequence to select the measurement Machine parameters, define the sequence name, select the rod length and rotation angle index, set the measuring point parameters, find the relationship, and perform simulation to check whether there is a collision; DMIS program sentence conversion, import Metrolog software, identify the angle conversion command in the DMIS program, and realize the measurement Work; the invention accurately captures the detection points of the gap surface of the automobile outer cover, avoids the possible influence of the workpiece on the measurement result due to slight deformation, and performs virtual debugging on the measurement program, which saves the online debugging time of the equipment and improves the measurement accuracy .

Description

technical field [0001] The invention belongs to the technical field of precision measurement, and relates to a size measurement method for the matching relationship of an automobile outer cover. Background technique [0002] When measuring the matching gap surfaces of automobile outer covering parts, manually grabbing points in the measurement software in the past may cause inaccurate measurement points due to rebound or deformation of the outer covering parts, and the deviation of measurement data cannot be correctly guided Production. [0003] At present, there is no professional open programming software for customers who need to measure the gap. Due to the characteristics of large rebound and easy deformation of automobile outer covering parts, the traditional grabbing method may affect the accuracy of measurement results due to the deformation of the test parts. Contents of the invention [0004] In order to meet the customer's requirements for measurement, through ...

AI Technical Summary

Problems solved by technology

[0002] When measuring the matching gap surfaces of automobile outer covering parts, manually grabbing points in the measurement software in the past may cause inaccurate measurement points due to rebound or deformation of the outer covering parts, and the deviation of measurement data cannot be correctly guided Production

[0003] At present, there is no professional open programming software for customers who need to measure the gap

Due to the characteristics of large rebound and easy deformation of automobile outer covering parts, the traditional grasping method may affect the accuracy of the measurement results due to the deformation of the test parts

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