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我们在实践工作中,往往容易碰到用万工显上的灵敏杠杆(即内测设备)无法测量的小于5毫米和大于195毫米的孔径。我厂计量室利用读数为1微米或2微米无换向装置的杠杆千分表,对2～395毫米孔径进行了测量,取得了良好的效果,现介绍如下。测量装置:本装置采用比较法,利用杠杆千分表测头,作为测量孔径时的定位装置。使用范围:φ2～φ395毫米。操作步骤:(一)测量φ2～φ5的孔径1.把一杠杆千分表固定在主显微镜的物镜上,使其测杆与工作台垂直。杠杆千分表选用直径为1毫米左右的测头。2.把一量块(与被测孔径名义尺寸相同)固定在仪器工作台上,用杠杆千分表把量块的中心长度调整到与导轨移动方向相平行。
In practice, we often encounter the aperture of less than 5 mm and greater than 195 mm that can not be measured with the flexibly leveraged (ie, inline test equipment). I use the factory measurement room readings of 1 micron or 2 microns without lever device dial indicator, the 2 ~ 395 mm aperture was measured and achieved good results, are presented below. Measuring device: The device uses a comparative method, the use of lever dial indicator probe, as a positioning device when measuring aperture. Use range: φ2 ~ φ395 mm. Operation steps: (A) measuring the aperture φ2 ~ φ5 1. Lever dial indicator fixed to the main microscope objective, so that the rod and the table vertical. Lever dial gauge selection of about 1 mm probe. 2. Fix a piece (the same nominal size as the hole under test) on the instrument table and adjust the center of the block parallel to the guide rail using the lever indicator.