Three dimensional localization device and method for workpiece
A technology of three-dimensional positioning and workpiece, applied in the direction of measuring devices, optical devices, instruments, etc., can solve the problems of cumbersome processing and high requirements for image extraction algorithms, and achieve the effect of high measurement accuracy
Active Publication Date: 2012-07-04
CHINA KEHAN LASER FUJIAN
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This technology has high requirements for the establishment of imaging models and image extraction algorithms, and the processing is cumbersome.
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[0026] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0027] Such as figure 1 As shown, the device for three-dimensional positioning of the workpiece includes a light source 1, and a collimating mirror 2 placed on the exit surface of the light source 1, and a detected object 3 is arranged under the light-transmitting light curtain of the collimating mirror 2, and the detected object 3, a telecentric lens 4 is arranged on the vertical surface of the light beam of the light curtain, and a CCD detector 5 is arranged under the telecentric lens 4. The CCD detector 5 is connected to the processor 6, and the processor 6 is connected to the computer 7.
[0028] In the present invention, the light source 1 is a semiconductor laser, a word line light source or an LED light source. The collimating mirror 2 is composed of a convex lens and a concave lens. The telecentric lens 4 is composed of convex lenses.
[0029...
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The invention discloses a three dimensional localization device and a three dimensional localization method for a workpiece. The device comprises a light source and a collimating lens arranged on the emergent surface of the light source. An object to be detected is arranged below a transparent certain of the collimating lens, a telecentric lens is arranged on a beam vertical surface of the transparent certain below the object to be detected, a CCD (Charge Coupled Device) probe is arranged below the telecentric lens and the CCD probe is connected with a processor and a computer. The method comprises the steps of: 1) setting up a light path; 2) clamping the object to be detected on a mechanical linkage table, wherein X- and Y-shafts move in step by step to place the object to be detected inthe certain; 3) projecting the object to be detected and imaging in the CCD probe and outputting the image to the computer; 4) rotating the object to be detected around Y-shaft once to obtain 360 / n projected images on the CCD probe and outputting the images the computer; and 5) comparing the calibration value of the computer with the online measured valve to compensate the error, so as to obtain accurate three dimensional localization of the object to be detected. The device disclosed by the invention has simple principle, strong practicality, high precision and good stability, and can realize three dimensional localization of the workpiece.
Description
technical field [0001] The invention relates to a workpiece positioning device in the technical field of optical detection, in particular to a device and a positioning method for three-dimensional positioning of a workpiece. Background technique [0002] In mass industrial production, the highly automated production process and the increasing product quality require more efficient, accurate and high-speed detection and identification methods. Optical detection technology can ensure the reliability in the industrial field environment, improve the degree of production automation, and greatly improve production efficiency. Therefore, in the current automated production process, optical detection is widely used in product identification, quality control, measurement inspection, automation equipment and other fields. [0003] The identification and positioning of the workpiece mainly adopts the method of manual identification in the early stage. With the progress of modern manuf...
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IPC IPC(8): G01B11/25
Inventor 武杰杰张晓
Owner CHINA KEHAN LASER FUJIAN