Device and method for mapping large hook-surface-modeling product

Abstract

The invention discloses a device and method for mapping a large hook-surface-modeling product. The device comprises a large working table, moving guide rails, a bridging transverse beam, positioning calibration holes, a z-direction laser range finder, an electronic receiving and processing device, a y-direction laser range finder, an x-direction laser range finder, an x-direction driving motor and a y-direction driving motor. When the y-direction driving motor drives the bridging transverse beam to slide on the guide rails, an x-direction coordinate of the product is measured through the x-direction laser range finder installed on the guide rails, a y-direction coordinate of a corresponding measurement point is measured through the y-direction laser range finder on a supporting frame of the working table, and meanwhile due to the fact that a z-direction coordinate can be measured through the z-direction laser range finder on the lifting bridging transverse beam, the three-dimensional coordinates of the large hook-surface-modeling product can be obtained. The large gantry-type device and method for mapping the large hook-surface-modeling product are simple in structure, convenient to measure and high in measurement accuracy, the labor intensity of operation persons is relieved, and the position can be selected at will to carry out measurement according to the shape of the measured product.

Description

technical field [0001] The invention belongs to the field of measurement technology equipment, and relates to a surveying and mapping device and a surveying and mapping method for large-scale curved-surface modeling products, in particular to a surveying and mapping device and a surveying and mapping method for large-scale and complex curved-surface modeling products based on a laser range finder. Background technique [0002] At present, the three-dimensional measurement method of an object has a three-dimensional image measurement method based on stereo vision technology. This method mainly relies on taking two or more object photos of the measured object, and using a computer to calculate the coordinates of a three-dimensional point based on the principle of triangulation measurement. The device has high requirements on photographic equipment, and the measurement is greatly affected by the environment. In addition, there is also triangulation using a telescope and a red-a...

AI Technical Summary

Problems solved by technology

[0002] At present, the three-dimensional measurement method of an object has a three-dimensional image measurement method based on stereo vision technology. This method mainly relies on taking two or more object photos of the measured object, and using a computer to calculate the coordinates of a three-dimensional point based on the principle of triangulation measurement. The device has high requirements on photographic equipment, and the measurement is greatly affected by the environment

In addition, there are also triangulation measurements using a telescope and a red and white measuring ruler. This method has great limitations when measuring heterogeneous parts, especially for large curved products with complex surface structures, which is difficult to measure.

In order to ensure the guidance of the traditional three-coordinate measuring instrument, the cross-section of the beam is mostly rectangular. The structural quality of the supporting beam is large, the movement inertia is large, and the measurement accuracy is low; and a contact measurement probe used is very wear-resistant.

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