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Flexible three dimension holographic measuring system

A technology of 3D holography and measurement system, which is applied in measurement devices, instruments, and optical devices, etc., can solve problems such as strong comprehensiveness and no reasonable solution has been found, and achieves improved scanning accuracy, fast and efficient 3D surface scanning without blind spots, The effect of high versatility

Inactive Publication Date: 2007-06-27
DALIAN MARITIME UNIVERSITY
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Problems solved by technology

However, due to the strong comprehensiveness of such subjects (mechanics, control, measurement technology, data processing, computer software and hardware, optics), no reasonable solution has been found

Method used

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  • Flexible three dimension holographic measuring system
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Experimental program
Comparison scheme
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Embodiment Construction

[0039] The present invention mainly comprises following five parts:

[0040] (1) Parallel 3D measuring robot

[0041] (2) The planning of the scanning path is mainly the estimation of the coordinates and normal vectors of the points to be measured.

[0042] (3) Coordinate transformation and three-dimensional display of scanned data.

[0043] (4) Data post-processing, including points, lines, and surfaces.

[0044] (5) An evaluation of the processing quality of the scanned surface is given.

[0045] The following combines the above content to give a detailed introduction to the scanning of an engine component:

[0046] Step 1: Input the basic parameters of the workpiece to be tested

[0047] Size: 40×35×15cm 3

[0048] Material: cast iron

[0049] Surface Roughness: 3.2

[0050] Scanning step: 0.2mm

[0051] Step 2: Rough Scanning

[0052]The second method using path planning is the path planning method based on scan data. Divide the scanning process into two phases:...

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Abstract

The system is composed of non-contact type gauge head, parallel robot (PR), computer, and controller. User inputs basic measurement parameters. Carrying scan path planning automatically, system controls PR to carry out gauge head to measure surface to be measured without blind spot. The measured data are transmitted to data processing unit quickly so as to complete constructing 3D model of surface to be measured. Flexibility of parallel measuring robot in structure, and high positioning accuracy meets the requirement of online detecting precision from manufacturing industry. By using adaptive capacity to environment and anti- noise capability of PR is to meet requirement of industrial site. Suspended ceiling type installation is adopted for PR with small size and lightweight. Thus, it is convenient for PR to be installed in large-scale digital control machining center. The invention possesses practicability and popularizing potential.

Description

technical field [0001] The invention belongs to the field of advanced manufacturing technology. Background technique [0002] Through the in-depth and meticulous investigation and research on China's manufacturing and processing market, it is found that in some representative large-scale manufacturing and processing enterprises, in order to fundamentally improve the quality of manufacturing and processing and enhance the competitiveness of enterprises in the international market, they have begun to pay attention to processing Online quality inspection and evaluation work. They have an urgent demand for online processing quality inspection and monitoring equipment. Such enterprises have advanced equipment, but domestic CNC processing equipment does not have the functions of online detection and processing quality evaluation. Although imported CNC processing equipment is equipped with detection devices, it is not only expensive but also impractical, and most of this function ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/00G01B21/00
Inventor 马孜胡英黄进张旭吴德峰汪洋
Owner DALIAN MARITIME UNIVERSITY
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