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在普通车床的大修中,为了保证大丝杠中心线a、b(见图)因走刀箱丝杠接手、拖板箱开合螺母及丝杠吊瓦的中心线在一条直线上,并且保证与床身导轨10平行,这就需要采取一定的手段进行测量。常用的方法是采用百分表座在移动弯板上测量。这种方法需两人来回搬动,一人测量,劳动强度大,时间也长。采用三心测量器检测,只需一个人即可操作。将三心测量器固定在大拖板上,借助拖板箱的左右移动来检测。操作方法如下:
In the general overhaul of the lathe, in order to ensure that the center of a large screw shaft a, b (see Figure) due to take the lead screw box, drag the box opening and closing nuts and screw hanging wall in a straight line, and guarantee Parallel with the bed rail 10, which requires some measures to be taken. The common method is to use a dial indicator to measure on a moving bent plate. This method requires two people to move back and forth, one measurement, labor-intensive, time is long. With three heart measuring device detection, only one person can operate. Three heart measuring device is fixed on the big carriage, with the right and left pallet movement to detect. The operation method is as follows: