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本文讨论了由激光器发出的光束,通过克卜勒内调焦倒置望远镜系统,得到扩束的平行光束,此光束照射到置于被测件(如导轨)上的装有条纹干涉系统的靶上,即可在影屏上获得干涉条纹图象。将靶沿被测导轨移动,由于导轨不直度误差,将使得干涉条纹发生移动,其移动量的大小即精确地表征了不直度的误差大小。实验结果证明:采用激光准直干涉仪作准直和测量,条纹清晰,使用方便,抗干扰及防振性能好,可在车间条件下使用。本装置测量范围可达100米以下的尺寸,其误差小于20微
In this paper, we discuss the beam emitted by a laser. By using the Kepler in-focus inverted telescope system, a beam expanding parallel beam is obtained, which impinges on a target with a fringe interferometer placed on a device under test (eg, a guide rail) , You can get the interference fringe image on the screen. Moving the target along the track under test, the interference fringes will be moved due to the straightness error of the track, and the magnitude of the movement accurately characterizes the error of the straightness. The experimental results show that the laser collimation interferometer is used for collimation and measurement. The stripes are clear, easy to use, anti-interference and anti-vibration performance, and can be used under the workshop conditions. The device measuring range up to 100 meters below the size, the error is less than 20 micro