| 圆柱螺纹牙型非接触检测失真校正 |
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| 引用本文： | 沈萌红,沈绍锋,王贤成,陈俊华,曾成洲.圆柱螺纹牙型非接触检测失真校正[J].农业机械学报,2011,42(10):224-229. |
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| 作者姓名： | 沈萌红 沈绍锋 王贤成 陈俊华 曾成洲 |
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| 作者单位： | 浙江大学;浙江大学;浙江大学宁波理工学院;浙江大学宁波理工学院;浙江大学宁波理工学院 |
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| 基金项目： | 国家自然科学基金资助项目（50645032）、浙江省自然科学基金资助项目（Y105686）、宁波市科研攻关资助项目（200703B1003018）和宁波市自然科学基金资助项目（2008A610038） |
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| 摘 要： | 在对圆柱螺纹进行非接触检测时，螺纹牙型会产生失真现象,为此提出图像校正的方法。从螺纹牙型失真的几何原理出发，建立相应的螺纹数学模型，对采集的螺纹图像进行校正，获得真实的螺纹牙型，并通过软件仿真和试验验证了该模型的正确性。同时表明图像校正的方法提高了圆柱螺纹非接触检测的精度、效率。
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| 关 键 词： | 圆柱螺纹 非接触检测 失真 校正 |
Distortion Calibration of Parallel Screw Thread Form Based on Non-contact Measurement |
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| Institution: | Zhejiang University;Zhejiang University;Ningbo Institute of Technology of Zhejiang University;Ningbo Institute of Technology of Zhejiang University;Ningbo Institute of Technology of Zhejiang University |
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| Abstract: | Thread form showed distortion when measuring parallel screw thread parameters by using non-contact method. The traditional way had some defects, such as time consuming, skilled operator, high-precision equipment for adjustment and so on. Hence, a method through digital image calibration was presented. Based on the thread geometrical principle, the mathematical model was given out. With the above thread mathematic model, images obtained from camera were corrected and real thread form could be got. With the results of related experiments and simulation, the mathematic model was certified. This proposed method could improve accuracy and efficiency of thread measurement and detection. |
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| Keywords: | Parallel screw thread Non-contact measurement Distortion Calibration |
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