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一般现场用的检查键槽中心对轴颈中心错位的测量工具,它的构造并不能保证检查出规定的技术条件。这种构造的工具,尺寸b(如图1)是按键槽的下限尺寸制造的,它的偏差是键槽中心对轴颈中心的许可错位量的两倍。实际尺寸d在制造公差范围内的变动,以及键尺寸b的制造公差数值,将使测量结果发生很大的误差。为了获得更精确的测量结果,消除由于制造公差所
General on-site inspection keyway mismatch center of the journal measuring tools, its structure and can not guarantee to check the specified technical conditions. The tool of this construction, dimension b (Figure 1), is manufactured with a lower keyway dimension that deviates twice as much as the allowable misalignment of the keyway center to the journal center. Changes in the actual dimension d within manufacturing tolerances, as well as manufacturing tolerance values for the key dimension b, can result in significant errors in the measurement results. In order to obtain more accurate measurement results, eliminating due to manufacturing tolerances