这种检具如图,它是由两个端架1,两个定位棒8,摇摆轴9,螺杆10,滑移螺母11和限制其旋转的两个导柱(图中末示出)构成的检具体,测头2,摇杆3,千分表5,摆杆6和弹簧7等件组成为检具的计量元件。 使用时,首先要按所检测孔键的位置,把测头2,摇杆3等件调整好后,将检具以两个定位棒8置于孔 This jig is shown in the figure and consists of two end brackets 1, two positioning rods 8, a rocking shaft 9, a screw rod 10, a slip nut 11 and two guide pins (not shown) which limit the rotation thereof Of the test body, the probe 2, rocker 3, dial indicator 5, pendulum 6 and the spring 7 and other components of the measuring fixture components. Use, first of all, according to the location of the detected keyhole, the probe 2, rocker 3 and other pieces of adjustment, the test fixture with two positioning rods 8 placed in the hole