Φ25mm火炮身管直线度光电测量方法

Optoelectronic method for measuring the straightness of the bore with a diameter of 25 mm

基于激光准直和光电探测原理与技术,并借鉴象限探测法、精密机械、伺服控制技术和计算机技术研制了一种用于Φ25mm火炮身管直线度的光电测量系统。给出了系统的总体结构,对系统的测量原理进行了理论分析,得到了身管直线度的计算公式,建立了解决光电靶偏心的数学模型。并将测量系统应用于长1.15m的Φ25mm精加工孔标准件进行两组采样,每组采样步长为100mm。实测的结果表明:测量系统分辨率可以达到0.005mm,测量误差小于0.015mm,重复性测量精度优于±0.009mm,说明测量方法是可行的。

Based on the principle and technology of laser collimation and optoelectronic inspection, an optoelectronic measuring method is presented to measure the straightness of the bore with a diameter of 25 mm by using the quadrant detection method, technique of laser collimation, optoelectronic detection, precision machine, servocontrol and computer for reference. The overall structure of system is discussed, and the measuring principle of the system is analyzed. Then, the corresponding formula to calculate the straightness of the bore and the mathematics model to solve eccentricity of the optical drone are obtained. Then the system is used to measure a hole standard piece with the length of (1.15 m) and inner diameter of 25 mm, by sampling two groups of the data of straightness with the pedometer of 100 mm each. The results show that the system resolving power can reach 0.005 mm, the measuring error is not more than 0.015 mm, and the measuring repetition error superior to ±0.009 mm,Which indicates that the measuring method is applicable.