Large three-dimensional coordinate measuring method with laser tracking and device

A technology of three-coordinate measurement and laser tracking, which is applied to measurement devices, mechanical measurement devices, and optical devices, etc., can solve problems such as errors and difficulty in controlling the direction of the light pen, and achieve the effect of safe and reliable work and high measurement accuracy.

Inactive Publication Date: 2012-06-20
TIANJIN UNIV
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  • Application Information

AI Technical Summary

Problems solved by technology

The main problem is that it is difficult to control the direction of the light pen in manual operation to ensure that the relative position of the measuring head (or measuring end) and the target remains unchanged in space
A slight tilt of the stylus can introduce significant error

Method used

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  • Large three-dimensional coordinate measuring method with laser tracking and device
  • Large three-dimensional coordinate measuring method with laser tracking and device
  • Large three-dimensional coordinate measuring method with laser tracking and device

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Embodiment Construction

[0038] The present invention aims at above-mentioned problem, invents a kind of (1) can be used in engineering or production site; (2) measurement precision is high; (3) safe and reliable; (4) measurement range is large; It is a large-scale three-coordinate measuring system with laser tracking that can meet the needs of large-scale measurement in various engineering and production for external features.

[0039] A large-scale three-coordinate measuring system with laser tracking consists of three parts: a measuring machine, a laser tracker and a computer control system, such as Figure 7 shown. The main function of the measuring machine is to detect the feature points of the measured object, including external feature points and internal feature points. There are wheels 2 at the bottom of the column 3 of the measuring machine, which can be moved to the site of the measured object and a place closer to the measured feature point. In the reached position, the rear paw 1 is low...

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Abstract

The invention relates to space coordinate measurement of large engineering and large machines and workpieces, and provides a large three-dimensional coordinate measuring system, which can be used on an engineering or production site, has high measurement accuracy, safe and reliable working and large measurement range, can detect the internal and external characteristics of a detected object and can meet the requirement for large size measurement in various engineering and production. The technical scheme adopted by the invention is as follows: the large three-dimensional coordinate measuring device with laser tracking comprises a measuring machine, a laser tracker and a calculation control system as well as a laser interferometer for measuring linear displacement, wherein the measuring machine is provided with a horizontal arm capable of doing x-direction movement and a main shaft capable of doing z-direction movement; the other end of the horizontal arm is provided with a corner prism; one end of the main shaft is provided with a measuring head rotating body which is provided with a measuring head; the other end of the main shaft is provided with a target and an angle measuring device; and a temperature measuring element which is used for carrying out temperature compensation is stuck on the main shaft. The invention is mainly applied in three-dimensional coordinate measurement.

Description

technical field [0001] The invention relates to the space coordinate measurement of large-scale engineering, large-scale machines and workpieces, and can be used in engineering, machine operation, parts processing and assembly sites. The size of the measured object can be much larger than the size of the detection equipment, and requires high measurement accuracy, which belongs to the testing technology And in the field of instruments, it involves the measurement of three-dimensional coordinates in large-scale space. Specifically, it relates to a large-scale three-coordinate measurement method and device with laser tracking. Background technique [0002] With the development of high technology, large-scale projects, large-scale machines, and large-scale parts are widely used in national economy and national defense, and their precision requirements are getting higher and higher. High-precision detection of large engineering objects, especially on-site detection is a difficu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/00
CPCG01B11/26G01B5/008G01B21/02G01B11/00G01B11/002G01B11/24
Inventor 张国雄刘书桂裘祖荣李杏华郭敬滨
Owner TIANJIN UNIV
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