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万能工具显微镜中央镜头的主光轴(以下简称主光轴),应通过立柱回转中心,并且垂直于顶尖轴线(即立柱回转零位正确),而且立柱回转中心也应在顶尖轴线上(一般允差为±0.01毫米)。已有的检定方法对主光轴与玻璃工作台的垂直性有要求(一般允差约为±5′),顶尖轴线和玻璃工作台对纵向滑板移动平面的平行性也有要求(一般允差为±20″),如果认为顶尖轴线与玻璃工作台是平行的,主光轴对于顶尖轴线垂直性一般允差也应约为±5′。已有的检定方法中对主光轴与立柱回转中心的偏差无要求是不恰当的。对于立柱回转中心与顶尖轴线的重合性的检查是通过立柱左右回摆12.5°
Universal tool microscope The main optical axis of the central lens (hereinafter referred to as the main optical axis), should be through the column rotation center, and perpendicular to the top axis (that is, column rotation zero correct), and column rotation center should also be in the top axis The difference is ± 0.01 mm). The existing verification methods have requirements on the verticality of the main optical axis and the glass workbench (generally, the tolerance is about ± 5 ’). The top axis and the glass workbench also have requirements on the parallelism of the longitudinal sliding plane (the general tolerance is ± 20 "). If the top axis is considered to be parallel to the glass table, the normal allowance for verticality of the main optical axis to the top axis should also be about ± 5 ’.For the existing test methods, the main optical axis and the column center of gyration Of the deviation of the request is not appropriate.For the column center of rotation and the top axis of the coincidence check through the column back and forth around 12.5 °