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在光学分度头示值误差的检定中,度盘偏心是产生分度头示值误差的主要原因之一。本文提出一种快速判别与调整度盘偏心的方法。按照光学分度头检定规程,首先将四力铁或多面棱体借助于心轴固定在光学分度头上。当分度头对准零位后,调整多面棱体,使与自准直仪对准。然后转动分度头,使多面棱体工作面依次与自准直仪对准,由分度头读数
In the optical indexing head indication error in the test, the eccentric disc is generated indexing error indication one of the main reasons. This paper presents a method to quickly determine and adjust the eccentricity of the dial. Accordance with the optical sub-head test procedures, the first four-iron or multi-faceted prisms by means of a mandrel fixed to the optical indexing head. When the indexing head is aligned at zero, adjust the polygons to align with the autocollimator. Then turn the indexing head so that the multi-faceted prismatic face and self-collimator alignment, reading by the sub-head