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准直仪用于检验形状公差值,如不直度、不平度等,已为大家所熟悉和应用。而用准直仪检验位置公差值,如不同轴度、不平行度、不垂直度、端面跳动等,认识还不深。从我厂进行的几个实例来看,有些位置公差值用机械方法检验难以解决的,用准直仪检验却很方便,值得予以重视和进一步探讨。下面介绍几个实例,供参考。一、用准直仪检验不垂直度应用准直仪和一些常用的测检工具,可以检验某些用机械方法难以检验的位置公差值,如轴线对平面、平面对轴线和轴线对轴线等的不垂直度的公差值,具有操作方便、测量精度较高等优点。(一)气缸套、水套组装的水套座面与气缸套轴心线不垂直度的测量气缸套、水套组装的水套座面与气缸套轴心线不垂直度的测量,是在零级平板上进行的。测量时的情况见图1。
Collimators used to test the value of shape tolerance, such as non-straightness, roughness, etc., have been familiar to everyone and application. The use of collimator position tolerance test values, such as different axis, non-parallelism, non-perpendicularity, beating, etc., not deep understanding. Several examples from our plant point of view, some of the location tolerances difficult to solve by mechanical inspection, collimator test is very convenient, it is worth to be taken seriously and further discussed. Here are a few examples for reference. First, the use of collimator test non-perpendicularity The application of collimators and some commonly used test tools, you can test some of the mechanical methods are difficult to verify the location of tolerance values, such as the axis of the plane, the plane axis and the axis of the axis Of the non-vertical tolerance value, with easy operation, high accuracy and so on. (A) cylinder liner, water jacket assembly of the water jacket seat cylinder liner axial centerline measurement of non-perpendicularity of the cylinder liner, water jacket assembly of the water jacket seat cylinder liner axial line measurement is not vertical, is in the Zero level on the plate. Measurement of the situation shown in Figure 1.