1. The influence of the equal height of grinding head, head frame and tail seat on the dimensional accuracy of the work piece.
The equal height error of the grinding head, the head frame and the tail seat will offset the central line of the head frame and tail seat with the axis of the grinding wheel spindle in space, and the surface of the ground work piece will be a hyperboloid.
2. The influence of the center line of the head frame and the tail seat on the parallelism error of the grinding head spindle axis in the horizontal plane on the dimensional accuracy of the work piece.
When this error occurs, the shape of the work piece ground by the cylindrical grinder will be a cone, that is, the grinding wheel will be ground at an angle, and there will be spiral grinding lines on the surface.
3. The influence of the verticality error of the grinding head relative to the machine tool guideway on the machining accuracy.
The final result of this error is that the spindle axis is offset from the center line of the head frame and the tail seat, and the verticality of the shaft shoulder end face and the work piece axis will be caused when grinding the end face of the shaft shoulder.