Cylindrical object verticality noncontact detection device and method
A non-contact detection device technology, applied in the direction of measuring devices, optical devices, instruments, etc., can solve the problems that manual detection methods are incompetent, and achieve the effects of adjustable parameters, simple operation, simple and direct calculation
Inactive Publication Date: 2017-02-22
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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With the expansion of production scale, the improvement of production speed and the increasingly stringent high quality requirements, traditional manual inspection methods are no longer competent
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[0028] Aiming at the needs of industrial testing, a device is designed to realize real-time verticality testing of cylindrical metal parts and guide the installation. The detection requirements include: the height of cylindrical metal parts is 1000~2300mm, the diameter of cylindrical metal parts is 350~1200mm, and the detection accuracy is 0.05°~0.1°. Design parameters such as figure 2 Middle D = 800mm, camera field of view θ = 60°, and the actual engineering measurement accuracy is 0.05°, which meets the design requirements.
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The invention discloses a cylindrical object verticality noncontact detection device and method. Real-time verticality detection of a cylindrical object is realized by the device through a camera and laser rays. The laser rays act as the horizontal reference, and the camera performs imaging of the cylindrical object so that calibration of the edge position of the top part of the cylindrical object can be realized through an edge detection method with the laser rays acting as the reference, and the verticality of the cylindrical object is detected by comparing the distance from different positions of the top part of the object to the reference line. Cylindrical high-precision noncontact verticality detection can be realized by the scheme. The measurement precision of the camera is 0.05 degree, the field range of the camera is theta=60 degrees and the resolution is 5Kx5K, two laser devices are erected at the two sides of the measured object and emit a horizontal laser ray, and the length of the laser ray is greater than the diameter of the cylindrical object. Verticality measurement of the cylindrical object is realized by one small industrial control computer so that the manufacturing cost of the system is low, the measurement device is simple and easy to operate and the measurement accuracy is high.
Description
technical field [0001] The invention relates to a non-contact method and device for measuring the verticality of a columnar object, which is mainly aimed at the detection of the verticality of a large columnar object. Background technique [0002] The non-parallelism of columnar workpieces in the assembly process may exist in two directions, that is, there are non-parallelism errors in the horizontal direction and non-parallelism errors in the vertical direction. Therefore, certain methods of testing must be passed during the assembly process to determine whether the assembly quality meets the design requirements. With the expansion of production scale, the improvement of production speed and the increasingly stringent high quality requirements, traditional manual inspection methods are no longer competent. The invention adopts a non-contact detection method, utilizes a method combining laser technology and computer vision, and finally detects the verticality of a columnar ...
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IPC IPC(8): G01B11/26G01B11/02
CPCG01B11/26G01B11/02
Inventor 陆福星饶鹏韩冰陈忻胡蒲希赵云峰
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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