A 3D Profile Measurement System

Abstract

The invention relates to a measuring system for measuring the three-dimensional contour of a workpiece. The measuring system comprises a workbench, a controller and a data processing and analysis system. The system also comprises a structured light measurement system, a tip and turntable system and a three-coordinate measurement system, which are arranged on the workbench. The structured light measurement system is used for measuring the complex curved surface of the workpiece in a high-speed manner; the three-coordinate measurement system is used for measuring the complex fine portion of theworkpiece to ensure obtaining of high-precision and reliable measurement data of the portion, wherein the measurement data of the three-coordinate measurement system is used for establishing a measurement reference of the workpiece; the tip and turntable system is used for clamping the workpiece and driving the workpiece to rotate to obtain measurement data of the workpiece at different angles bycombining the structured light measurement system; and finally, full-profile three-dimensional contour of the workpiece can be obtained by carrying out coordinate system unification on the measurementdata of the three-coordinate measurement system and the structured light measurement system. The measuring system integrates the advantages of high precision and reliability of the three-coordinate measurement system and high measurement speed of the structured light measurement system and the like.

Description

technical field [0001] The invention relates to a measurement system for three-dimensional contour measurement of workpieces. Background technique [0002] With the development of modern advanced manufacturing, aerospace, large-scale energy and power equipment manufacturing and other industries, the size of processed parts, complex surface features, precision requirements, and detection speed all pose challenges to traditional dimensional detection. The three-dimensional measurement technology that emerged at the historic moment can directly obtain the three-dimensional shape information of the measured object through optical, mechanical, electronic and electrical principles, provide more accurate and comprehensive geometric information, and improve the precision evaluation and quality control methods. It is an indispensable and important technology for modern industrial inspection. At the same time, it can be widely used in industrial inspection, product quality control, r...

AI Technical Summary

Problems solved by technology

However, since it is still unable to effectively solve the effects of strong reflection and interreflection on the surface of smooth metal workpieces, this type of technology is limited to measuring objects with gentle changes in surface curvature and less influence of highlights and interreflection, and cannot reliably measure complex and fine structures. The scope of application is limited, and it is easily affected by the environment, light, etc.

[0004] In summary, there has always been a contradiction between high-speed measurement and high-precision measurement in this field, especially the high-speed and high-precision measurement of large-scale and complex curved surface workpieces, which is one of the outstanding and bottleneck problems in this field at present.

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