被测工件为转向螺母,该测量器是用来测量滚道槽中径尺寸的。一般在机械制造中,这些尺寸往往会给测量带来一定困难,且而测试工作效率也比较低。采用此检验法可靠、快速、精确度高,可收到良好效果。其结构如图所示。此量具在测量工件之前,须用一标准块,将千分表校对至零位。然后用手将件4往下推,这时件5静卡和件2活卡便收拢,再将其 The workpiece is turned to the nut, the measuring device is used to measure the size of the track groove diameter. Generally in the machinery manufacturing, these dimensions tend to bring certain difficulties to the measurement, and the test work efficiency is relatively low. Using this test method is reliable, fast, high accuracy, can receive good results. Its structure as shown. Before measuring the workpiece, the measuring instrument shall be calibrated to zero with a standard block. Then hand 4 will be pushed down, then 5 pieces of static cards and pieces 2 live card will gather, and then