圓錐螺紋測量成像方法

常忠偉[1]
張瑞杰[2]
何富云[1]

[1]大慶石化公司水汽廠,黑龍江大慶163714
[2]大慶石油學院,黑龍江大慶163318

摘　要:對圓錐螺紋的透射成像方法進行了實驗研究和理論分析。透射成像法是將螺紋放在平行光場中以得到清晰的螺紋牙形圖像，并用CCD攝像機采集到計算機內部，可用于進一步的尺寸測量。在透射成像時，螺旋線對投影螺紋牙會造成一定的遮擋。可以通過旋轉螺紋軸線，使螺旋線的切線與光軸平行的方法消除，但是引入了螺紋牙的投影誤差。經過分析，由此產生的投影誤差可以忽略。[著者文摘]



Imaging Method of Taper Thread for MeasurementCHANG Zhong-wei, ZHANG Rui-jie, HE Fu-yun 1. Daqing Petrochemical Plant Water and Vapour Division, Daqing 163714, China; 2. Daqing Petroleum Institute, Daqing 163318, ChinaAbstract:The projecting imaging method of tapered thread was studied through experiment and corresponding theoretical analysis was carried out to obtain clear thread images suitable for observation and measurement. A thread is put in a parallel optical field to obtain a projecting image, and the image is input computer by a CCD camera for further dimension measurement. The screw line will block the projection of thread teeth to some extent, but the disadvantage may be removed by rotating thread axis, and the introduced projecting error is little enough to be neglected.[著者文摘]

Key words:taper thread; reflection image; projection image; error analysis