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Dimensional Measurement Method for Matching Relationship of Automobile Outer Covers

A technology of outer cover and matching relationship, which is applied in the field of precision measurement, can solve problems that affect the accuracy of measurement results, measurement data deviation, easy deformation, etc., and achieve the effects of saving online debugging time, improving measurement accuracy, and improving use efficiency

Active Publication Date: 2021-05-11
CHINA FIRST AUTOMOBILE +1
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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

Method used

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  • Dimensional Measurement Method for Matching Relationship of Automobile Outer Covers
  • Dimensional Measurement Method for Matching Relationship of Automobile Outer Covers

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Embodiment Construction

[0063] The present invention is described in detail below in conjunction with accompanying drawing:

[0064] A method for measuring the size of the matching relationship of an automobile outer cover, comprising the following steps:

[0065] 1. Making measurement points

[0066] First, select the single-chip digital model of the product in the CATIA software, and then use it to lay out the measurement points. The measurement points need to be arranged on a single digital model. If it is a solid digital model, the surface should be truncated after extracting the surface, otherwise the required curve cannot be extracted.

[0067] The layout principle of the measurement points: distribute a column of measurement points every 50 mm around the digital model outline of the fender single-piece product (some key areas are properly encrypted, such as the eagle beak area matching the headlights, the fist area matching the A-pillar and On both sides of the ridge line) three points are ...

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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 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B21/16
CPCG01B21/16
Inventor 季阳熙张丽刘少辉宁成久赵瑞静李占永
Owner CHINA FIRST AUTOMOBILE
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