Cylinder on-line diameter measurement apparatus and measurement method thereof

A technology for diameter measurement and cylinders, which is applied in the field of cylinder diameter measurement devices, can solve problems such as inability to detect cylinders, and achieve the effects of improving measurement accuracy, reducing costs, and precise positioning

Inactive Publication Date: 2009-03-18
TIANJIN UNIV
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  • Claims
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Problems solved by technology

With the development of optical technology, non-contact measurement methods such as digital universal tool microscope, profile projection measuring instrument, and precision optical meter can all realize the measurement of cylinder diameter. Although these methods have high measurement accuracy, they need manual operation. , the diameter is measured by comparing with the standard gauge block, which is often used for quality inspection and random inspection; in addition, due to the limitation of the size of the platform, these methods cannot detect cylinders with too large diameters

Method used

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  • Cylinder on-line diameter measurement apparatus and measurement method thereof
  • Cylinder on-line diameter measurement apparatus and measurement method thereof
  • Cylinder on-line diameter measurement apparatus and measurement method thereof

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Embodiment Construction

[0022] The structural representation of measuring device of the present invention is as figure 1 shown. The measured cylinder 2 is placed on the V-groove 1 conveyor belt with a smooth surface, and the motor drive 7 is controlled by the computer 9 to move at a constant speed; The image on the upper edge of the cylinder 2 is collected, stored in the computer 9 through a digital device such as a capture card, and waits for the next step to be processed. The imaging system is placed on the pan-tilt 4 with multiple degrees of freedom, and the position of the imaging system can be adjusted conveniently. A backlight 6 is installed on the opposite side of the imaging system to transmit uniform high-brightness light, which can enhance the edge information of the cylinder 2, and obtain the position of the CCD image sensor where the edge of the cylinder 2 is located by simple image processing; because the V-shaped groove 1 is used, the cylinder 2 The imaging position of the edge on the...

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Abstract

The invention belongs to the technical field of computer vision inspection and image test, and relates to a device for measuring the diameter of a column on line. The device comprises a V-shaped groove conveyor belt for placing the column to be tested, an electric motor and an electric motor driver for driving the V-shaped groove conveyor belt to move uniformly in a straight line, and a video camera for acquiring images of the column to be tested. The video camera has a micro camera positioned on a tripod head, and the images acquired by the video camera are transmitted to a computer. Meanwhile, the invention provides a measuring method adopted by the device. The device and the method can carry out quick high-precision online measurement for the column. The device has a simple structure, can be regulated conveniently, and is suitable for the measurement of the columns with various diameters.

Description

technical field [0001] The invention belongs to the technical fields of computer vision detection and image testing, and in particular relates to a cylinder diameter measuring device. Background technique [0002] Cylindrical workpieces are widely used in the machinery manufacturing industry. With the development of precision machining technology, high-performance devices require higher and higher machining accuracy of cylinders. For example: Rolling bearings have become one of the most commonly used workpieces in various rotating machinery, consisting of inner rings, outer rings, rolling elements and cages. Most of the rolling elements are composed of cylinders, which are evenly arranged between the two rings in the bearing for rolling motion with the help of the main frame. Its shape and size directly affect the load capacity and durability of the bearing. As the internal clearance of rolling bearings gradually decreases, the running accuracy gradually improves, and highe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/08G01B11/10
Inventor 张效栋
Owner TIANJIN UNIV
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