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Virtual coordinate measurer based on data image treating and its measuring method

A technology of virtual coordinates and data images, applied in the field of machinery, can solve the problems of low cost, high price and high cost, and achieve the effect of reducing construction cost, low-cost measurement, and simplifying the overall structure

Inactive Publication Date: 2008-02-13
天津海达奥普光电技术股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The three-coordinate measuring machine is a general-purpose three-dimensional length measuring instrument, which can achieve high precision and has been widely used, but its disadvantages are that the cost is too high and the operation is complicated
That is to say, in the field of measuring the size of mechanical parts, it is either a high-precision, high-cost three-coordinate measuring machine, or a low-precision, low-cost testing equipment, and there is no precision between the two. Measuring equipment that can be applied to small businesses and can carry out routine and frequent inspections. Objectively speaking, factories and enterprises are in urgent need of coordinate measuring machines that can perform medium-precision measurements and low-cost three-dimensional dimensions of mechanical parts.
[0007] Due to the complex structure of the three-coordinate measuring machine, the huge system, the high price, and the limitations of the current non-contact measurement method, it is difficult for more small and medium-sized enterprises to accept, especially when measuring the outer dimension of the workpiece with medium precision, it is necessary to develop a mechanical structure Simple, easy-to-measure shape and dimension measuring machine
[0008] On this topic, I entrusted the Novelty Search Center of Shaanxi Science and Technology Information Research Institute to conduct a novelty search. The conclusion is that through comparison and analysis, the application of CCD technology in three coordinates in relevant literature at home and abroad is to apply it to the measuring machine. As for the measuring head, there is no research report on the application of CCD technology to the improvement of the body structure of the three-coordinate machine

Method used

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  • Virtual coordinate measurer based on data image treating and its measuring method
  • Virtual coordinate measurer based on data image treating and its measuring method
  • Virtual coordinate measurer based on data image treating and its measuring method

Examples

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Effect test

Embodiment 1

[0046] As shown in Figure 2, the present invention, as a virtual coordinate measuring machine based on data image processing, includes a working platform, a mechanical body, a measuring head, a computer and its peripherals, the measuring head is installed on the vertical shaft of the mechanical body, and also includes an image The acquisition device adopts a granite platform as the working platform 1, because the deformation of the granite due to the influence of temperature is small. The main body of the machine is mainly composed of an air-floating slide 6, a vertical shaft 4, a measuring head 3 and a CCD camera 8. The image acquisition device is mainly composed of a CCD camera 8, a light source and an acquisition card 9. The air-floating slide 6 is perpendicular to the granite workbench. The vertical shaft 4, the cylinder and the measuring head are installed on the vertical shaft 4, which can move up and down along the vertical shaft and can be locked at any position. A lig...

Embodiment 2

[0049] The overall composition and connection relationship are the same as in Embodiment 1. There are 6 holes on the air bearing slide 6 of the virtual coordinate measuring machine based on data and image processing. See Figure 3, and there are three holes evenly distributed along two different radial directions. , the three large holes are equipped with three air bearings, i.e. the air static pressure bearing, specifically the circular air static pressure bearing developed by Xi'an Polytechnic Institute; the three small holes are equipped with the CCD camera 8 in the image acquisition device. In order to ensure the high reliability of the measurement system, the present invention adopts an air-floating slide seat, a mechanism carrying multiple technical elements, on which a vertical shaft 4 and a measuring head 3 are installed, and a camera 8 and an air-floating block are installed under it, and the air-floating block That is, the aerostatic bearing has the characteristics of ...

Embodiment 3

[0051] The overall composition and connection relationship are the same as in Example 1. As shown in Figure 2, a laser scanning probe is installed at the position where the probe 3 is installed in the figure. The laser scanning probe is mainly used to realize non-contact of soft materials or some characteristic surfaces. Measurement. The measuring head is at a certain distance (such as 50mm) from the detection workpiece, and measures within a certain range of its focal point, and the sampling rate is above 200 points / second. Higher accuracy is obtained through the average processing function of a large amount of collected data. The application aspect of the present invention is expanded by installing the laser scanning measuring head, and the measuring ability for special materials is improved.

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Abstract

The invention relates to unreal coordinate measuring machine and method based on data image processing. It replaces traditional measuring machine mechanical type three coordinates measurement axis by unreal axis measuring machine and device. It includes working platform, mechanic main body, feeler pin, computer and its peripheral equipment, and image collecting device. The image collecting device is made up of CCD pickup camera, light source, and collection card. Gas float slide rest is set vertical shaft. The vertical shaft is set at the feeler pin. The bottom of the gas float slide rest is set light source and CCD pickup camera. The invention combines gas float technique and unreal shaft measuring, contacting measuring and non contacting measuring to create unreal coordinate measuring machine and method based on data image processing. The whole form is very simplify that the object and measuring system are set at the platform to finish low cost middle accuracy measuring cooperated with computer control and hand pushing measuring system.

Description

technical field [0001] The invention relates to precision measurement in the mechanical field, and mainly relates to a measurement device based on the concept of a virtual coordinate axis, which can realize medium-precision and low-cost three-coordinate size measurement. Specifically, it is a virtual coordinate measuring machine and its measuring method based on data image processing. Background technique [0002] The main method for detecting the size and contour of the workpiece is: by measuring the relative displacement between the probe and the workpiece, the spatial coordinate size of the workpiece is obtained, and the measurement result is given by computer processing. The essence of the coordinate measuring machine is to obtain the displacement information of the probe or the workpiece. The traditional displacement (coordinate) measurement is realized by the coordinate axis of the coordinate machine. The coordinate axes are all composed of mechanical components, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B21/04G01B11/03
Inventor 张君安方舟郝东风刘波王丽君李小丽袁莉
Owner 天津海达奥普光电技术股份有限公司