Intelligent high-speed train white body assembly quality detection device and method

Abstract

The invention relates to an intelligent high-speed train white body assembly quality detection device and method. The intelligent high-speed train white body assembly quality detection device comprises a seven-shaft mechanical arm, wherein the seven-shaft mechanical arm is controlled by a computer, a display screen is arranged on the seven-shaft mechanical arm and is connected with the computer, atwo-dimensional laser sensor is arranged at a tail end of the seven-shaft mechanical arm and is connected with the computer, and the seven-shaft mechanical arm is arranged on a mobile trolley. The intelligent high-speed train white body assembly quality detection device has the beneficial effects that 1, the assembly quality device employing the mechanical arm and the two-dimensional laser on a high-speed white body assembly line to measure the high-speed train white body is brand-newly proposed, and high-accuracy size measurement of an interesting region is achieved by flexibility of the mechanical arm and stability of the two-dimensional laser sensor; and 2, the assembly quality detection of a white body large-size workpiece is achieved by employing a multi-shaft robot loaded with the laser sensor, assembly quality detection of different shapes and different angles, comprising width and height of a gap between profiles and height difference of the profile, can be achieved by controlling motion and gesture of the mechanical arm.

Description

technical field [0001] The invention relates to a device and a method for measuring the position and posture of a large workpiece, in particular to a device and a method for detecting the assembly quality of a high-speed rail body-in-white. Background technique [0002] High-speed rail is a golden business card made in China, which represents the manufacturing level and scientific and technological strength of the entire country, and is a comprehensive manifestation of international influence and status. The body-in-white is the most important large-scale and complex structural part of a high-speed rail vehicle. It is the "bone" of a high-speed rail train. It is an important part of the technical route of "product", and its manufacturing performance and reliability directly affect the development of high-speed rail trains. With the increasing demand for train vehicles, the implementation of intelligent manufacturing of high-speed rail body-in-white is of great significance ...

AI Technical Summary

Problems solved by technology

However, the system has the following deficiencies. 1. The system collects the global image through the stereo vision sensor, and the laser structured light vision sensor at the end of the robotic arm carries out local accurate measurement of the positioning marks to obtain accurate three-dimensional coordinates. The pose measurement of large workpieces requires high system cost, and the measurement needs to install and fix the measured object, which fails to achieve accurate size measurement of the region of interest

[0005] 2. The system moves the laser structured light vision sensing device to the area to be collected through the mechanical arm with a planned movement trajectory, and performs measurement operations in a specific area, which cannot adapt to multi-shape and multi-angle measurement

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