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平台作业在机械制造工业的精密测量中已广泛应用。而方箱则是平台作业中必不可少的主要工具之一。但是,方箱的检定,现在尚无统一的方法和资料,现就我们开展检定的情况作一简介。一、与标准直角尺比较法先用经过检定并注明偏差值的标准直角尺将指示表对到某一数值α_尺(图1),然后移动表架紧靠被检方箱(图2),若这时指示表读数为α_(?),则被
Platform operations have been widely used in the precision measurement of the machine building industry. The square box is one of the essential tools in platform operations. However, there is no uniform method and information for the verification of square boxes. We are going to make a brief introduction on the verification conducted by us. First, compared with the standard rectangular approach France with the first test with a standard square foot and indicate the deviation value of the indicator to a certain value α_ feet (Figure 1), and then move the table close to the test box (Figure 2 ), If this time indicating that the table reading α_ (?), Was