AO202

AO202

AO202

《联系人；欧先生》
《座机：0592-5709825》
《传真：0592-5917519》
《24小时热线：18030229053微信同步》
《QQ  ：2479261344》
《QQ邮箱：2479261344@qq.com》

测量工具有标准转台、角度多面体、圆光栅及平行光管(准直仪)等，可根据具体情况选用。测量方法是使工作台正向(或反向)转一个角度并停止、锁紧、定位，以此位置作为基准，然后向同方向快速转动工作台，每隔30锁紧定位，进行测量。正向转和反向转各测量一周，各定位位置的实际转角与理论值(指令值)之差的最大值为分度误差。如果是数控回转工作台，应以每30为一个目标位置，对于每个目标位置从正、反两个方向进行快速定位7次，实际达到位置与目标位置之差即位置偏差，再按GB10931-89《数字控制机床位置精度的评定方法》规定的方法计算出平均位置偏差和标准偏差，所有平均位置偏差与标准偏差的最大值和与所有平均位置偏差与标准偏差的最小值的和之差值，就是数控回转工作台的定位精度误差。

  考虑干式变压器到实际使用要求，一般对0、90、180、270等几个直角等分点进行重点测量，要求这些点的精度较其他角度位置提高一个等级。

  6、回转工作台的重复分度精度检测

  测量方法是在回转工作台的一周内任选三个位置重复定位3次，分别在正、反方向转动下进行检测。所有读数值中与相应位置的理论值之差的最大值分度精度。如果是数控回转工作台，要以每30取一个测量点作为目标位置，分别对各目标位置从正、反两个方向进行5次快速定位，测出实际到达的位置与目标位置之差值，即位置偏差，再按GB10931-89规定的方法计算出标准偏差，各测量点的标准偏差中最大值的6倍，就是数控回转工作台的重复分度精度。

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