锥齿轮在切齿前的齿坯如图1所示,轮冠距H是垂直于齿坯轴线的外圆截面与基准端面间的距离。 当生产批量大时,轮冠距极限偏差的测量,可用卡板或专用量规测量。 用点接触式卡板测量的示意图如图2所示。当用下限卡板测量时,顶锥面有间隙为超差,如图2(a)所 Bevel gear tooth cutting in front of the gear as shown in Figure 1, the crown H is perpendicular to the tooth blank axis of the cylindrical cross-section and the distance between the reference end surface. When the production of large quantities, the wheel crown deviation from the limit of measurement, available card or special gauge measurement. Figure 2 shows the schematic of a point-contact card. When measured with the lower limit card board, the top cone surface gap for the ultra poor, as shown in Figure 2 (a)