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在万能测长仪上用电眼装置测量孔径时有以下关系:D_测=A+d工作式中:D_测——被测孔直径。 A——测量头在左、右孔壁接触时仪器两次谈数差。 d_(工作)——测量头工作直径。用电眼法测最孔径时,当测量头在孔壁刚接触,仪器电眼灵活闪跃时记取仪器读数,这时测头尚未与孔壁接触,有间隙ε/2。所以电眼测量实际上是一种非接触测量,此时测量力为零。由于电眼测孔时测头须在左、右孔壁两次
In the universal length measuring instrument on the device when measuring the aperture with the following relationship: D_test = A + dWorking: D_test - measured hole diameter. A - measuring head in the left and right hole wall contact when the instrument talk about the number of poor. d_ (work) - measuring head working diameter. When measuring the most aperture with electric eye method, when the measuring head just touches the wall of the hole and the instrument’s electric eye flexibly flashes, the instrument reading is taken. At this time, the touch probe has not yet contacted with the hole wall and has a clearance ε / 2. Therefore, the electric eye measurement is actually a non-contact measurement, the measured force is zero. As the electric eye hole when the probe must be left and right hole wall twice