Method and device for detecting deformation of wheel hub end face

Abstract

The invention discloses a wheel hub end face deformation detection method and a device thereof, which relate to the technical field of vehicle detection, comprising: rotating the wheel hub at least one turn, and measuring the outer end face of the wheel hub to obtain M groups of three-dimensional coordinate data, where M groups are multiple, Each set of data includes N data, in which the Z-axis coordinates perpendicular to the side of the hub are measured by a laser measuring device; among the N data, P data are sequentially selected as a group to obtain N‑P+1 group data, P Less than or equal to N, the data in each of the N-P+1 groups of data are fitted with a straight line to obtain the straight line with the smallest slope; Set the value of the Z axis in the three-dimensional coordinate data; etc. The present application can obtain accurate and highly reliable deformation of the hub end surface through a large amount of data of the hub end surface measured by laser.

Description

technical field [0001] The invention relates to the technical field of vehicle detection, in particular to a method and a device for detecting deformation of a wheel hub end face. Background technique [0002] The automobile hub is an important part of the wheel, and its safety performance and mechanical characteristics have an important impact on the safe operation of the automobile. Therefore, it is of great significance to detect the deformation of the end surface of the automobile hub. At present, most of the methods used to measure automobile hubs are direct measurement with contact dial indicators. This detection method has slow test speed and low test accuracy, and it is difficult to meet the production needs of the production line. At present, laser ranging is also used to detect the deformation of the end face of the automobile wheel hub, but since the laser ranging is the distance measured from a certain point on the end face of the automobile wheel hub, there may ...

AI Technical Summary

Problems solved by technology

At present, most of the methods used to measure automobile hubs are direct measurement with contact dial indicators. This detection method has slow test speed and low test accuracy, and it is difficult to meet the production needs of the production line.

At present, laser ranging is also used to detect the deformation of the end face of the automobile wheel hub, but since the laser ranging is the distance measured from a certain point on the end face of the automobile wheel hub, there may be tiny protrusions or recessed holes at a certain point on the end face of the automobile wheel hub, etc. But it did not really cause the deformation of the end face of the car hub

Therefore, these points cannot accurately and truly reflect the deformation at a certain point on the end face of the automobile hub. It is only because of some special reasons that some points are raised or recessed relative to the surrounding end face. If the distance obtained directly includes the points in the above cases To finally calculate the deformation of the end face of the automobile hub, the reliability and accuracy of the obtained deformation may be low

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