论文部分内容阅读
为了多、快、好、省地检查度盘,并使计量人员从繁复的劳动中解放出来,我厂试制成光电度盘检查仪,在一定的条件下,准备用来代替常角法检验度盘。为了保证度盘的检验精度,就必须对度盘检查仪进行全面的精度鉴定。一、度盘检查仪的测量原理及其结构用度盘检查仪检验度盘是一种比较测量法。这种方法要求仪器的基准度盘有很高的刻划精度和检定精度(一般应比被检度盘高三倍以上),事实上是难以实现的。因此,利用圆分度闭合误差为零的原理,采用五套光电显微镜对基准度盘上等分的五条分划线产生一个综合的光电效应,作为分度基准,以提高基准度
In order to more, faster, better, provincial inspection dial, and make the measurement staff liberated from the complicated labor, I plant trial made optical disc tester, under certain conditions, ready to be used instead of the regular angle test Dial. In order to ensure the accuracy of the test plate, it is necessary to carry out a comprehensive accuracy of the dial plate tester identification. First, the dial gauge measuring principle and the structure of the disk tester inspection dial is a comparative measurement method. This method requires the instrument’s standard dial with high scoring accuracy and test accuracy (usually more than three times higher than the test tray), in fact, is difficult to achieve. Therefore, the use of circular indexing closure error of zero principle, the use of five sets of light microscope on the fiducial plate equally divided five lines produce a comprehensive photoelectric effect, as the indexing to improve the base level