论文部分内容阅读
半径小于4毫米的小圆弧,可在工具显微镜(“小工显”、“大工显”、“万工显”)上利用测角目镜中米字分划板的标准角度来进行测量。一、测量方法把被测件置于工作台上,对圆弧半径为2～4毫米零件使用1~×物镜;对圆弧半径为1.3～2毫米零件可使用2~×物镜;对圆弧半径为1～1.3毫米零件可使用3~×物镜;对圆弧半径小于1毫米零件可使用4~×物镜。移动工作台使目镜中米字分划板中小交角的两根细实线与小圆弧的两边相切(图1),从工作台横向读取读数
Small arcs with a radius of less than 4 mm can be measured using the standard angle of the reticle in a goggle eyepiece on tool microscopes (“Small,” “Large,” and “Large”). First, the measurement method The test piece placed on the workbench, the radius of 2 to 4 millimeters parts using 1 × objective lens; radius of 1.3 to 2 mm parts can be used 2 × objective lens; arc Radius of 1 ~ 1.3 mm parts can be used 3 ~ × objective lens; radius of less than 1 mm parts can be used 4 × × objective lens. Move the table so that the eyepiece reticle in the small angle of the two small solid lines tangent to both sides of the small arc (Figure 1), reading from the table horizontal reading