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在现代重型机器制造业所面临的测量任务中,大型壳体件上孔的同心度的测量占有特殊的地位。当孔距不超过1000毫米时,可用移动式机械装置来测量,当孔距更大时可用—11(—12)型光学仪器和Taylor—Hobson 公司的显微望远瞄准镜等来测量。但是在生产条件下使用这类仪器需要花费较多的时间来进行仪器的准备、调整和瞄准中心标靶等。随着激光技术的发展,已有可能在应用度量学中使用激光,特别是可用来测量孔的同心度偏差。于此成功地利用了光束的特点—明
In the measurement tasks faced by the modern heavy machinery industry, the measurement of the concentricity of the holes in the large housing pieces occupies a special place. When the distance between the holes is less than 1000 mm, it can be measured by the mobile mechanism. When the hole distance is larger, it can be measured by the -11 (-12) optical instrument and the Taylor-Hobson microscope telescope. However, the use of such instruments under production conditions requires more time to prepare, adjust and target a central target. With the development of laser technology, it has been possible to use lasers in applied metrology, in particular to measure the concentricity deviations of the holes. In this successful use of the characteristics of the beam - Ming