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如图1是孔(?)10的位移度标注,图2是它的公差带解释。根据位移度的定义可知:如果测量得到孔的实际中心的坐标为 x、y,孔的位移度误差为△=(?),当△≤δ_位时,位移度合格。δ_位是位移度的公差。可见,由孔的实际坐标尺寸 x、y 求位移度误差△是比较麻烦的。如果是一个多孔的零件,每一个孔的位移度误差都要计算,显然更为繁琐了。有的零件,坐标法与位移度同时使用,如图3所示底板,甩位移度控制孔组内各孔的位置,用坐标法控制整个孔组在形体上的位置。这种情况下,要计算
Figure 1 is the hole (?) 10 displacement degree label, Figure 2 is its tolerance band to explain. According to the definition of displacement, we can see that if the measured coordinates of the actual center of the hole are x, y, the displacement error of the hole is Δ = (?), And when Δ≤δ_, the displacement is qualified. The δ_ bit is the tolerance of the degree of displacement. Can be seen from the hole’s actual coordinate size x, y find the displacement error △ is more troublesome. If it is a porous part, each hole displacement error must be calculated, obviously more complicated. Some parts, coordinate method and the displacement of the same time, as shown in Figure 3 floor, rejection of displacement control hole position within the hole group, with the coordinate method to control the entire hole group in the body position. In this case, to be calculated