How is the ordinary milling machine
In order to improve the accuracy of the first part of the surface of the workpiece is relatively smooth hair, the edge of the device has to do beating detection, the error can not be too big, as to how much beating, this is forgotten, it may be 3u it.
In general, the main use of the rotation is to observe whether the eccentric to determine, the requirements of the workers is relatively high.
At present the main use of the sub-bar (seeker).
Points to determine the center of it
