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在需要单独测定公制整数毫米螺纹螺距累积误差时,一般是测出每牙螺距的实际值,计算其对理论值的偏差值,逐牙取偏差的代数和进行累积,求得每牙的累积误差,然后在被检查的长度内,把累积误差最大的一牙和累积误差最小的一牙取代数差,最后才得出被检长度内的最大累积误差.为了简化计算,消除因计算而出现的误差,提高测定效
When it is necessary to separately measure the cumulative error of a metric thread pitch of millimeters, it is generally to measure the actual value of each thread pitch, calculate its deviation from the theoretical value, accumulate algebraically and deviate from each tooth, and obtain the cumulative error per tooth , And then within the length of the check, the tooth with the highest cumulative error and the tooth with the smallest accumulated error are substituted for the difference, and finally the maximum cumulative error within the length under examination is obtained. In order to simplify the calculation, Error, improve the measurement efficiency