此圆弧划线尺适用于座标镗床及立铣(工具铣)上,其特点是此尺可直接读数,位移精度在0.05毫米以内,如垫块规,位移精度在0.015毫米以内。一、技术要求1.划针12(图1)要与机床主轴同心,圆心度在0.01毫米以内。2.主尺2上的刻线间距误差在0.01毫米以内。二、制造工艺1.主滑尺4上装划针12的孔是事先预制 This circular arc ruler is suitable for coordinate boring machine and end milling (tool milling), which is characterized by direct reading of this scale, displacement accuracy of less than 0.05 mm, such as spacer gauge, displacement accuracy of 0.015 mm or less. First, the technical requirements A needle 12 (Figure 1) to be concentric with the spindle, the center of the circle within 0.01 mm. 2. The main ruler 2 on the groove pitch error of less than 0.01 mm. Second, the manufacturing process 1. The main slide 4 on the loading needle 12 holes pre-made