The grinding wheel frame of the external cylindrical grinder is equipped with internal grinding accessories. The grinding wheel frame and the head frame can be adjusted to an angle around the vertical axis. In addition to the dial rotation on the head frame, the spindle can also rotate. It can expand the processing range, and can grind the inner hole and the inner and outer cones with larger taper, suitable for small and medium batches and single-piece production. The workpiece is supported between the headstock and the tailstock, and is driven by the dial of the headstock to rotate for circular feed motion. The headstock and tailstock are mounted on the worktable, which can be used for longitudinal reciprocating feed movement. The worktable is divided into upper and lower layers. The upper worktable can be adjusted to a small angle to grind the conical surface. The grinding wheel carriage equipped with a high-speed rotating grinding wheel makes a lateral feed movement. In order to reduce the length of the machine tool, the worktable is generally fixed, and the grinding wheel carriage is used for longitudinal reciprocating motion and lateral feed motion.
Both the grinding wheel frame and the head frame can be adjusted to an angle around the vertical axis. In addition to the dial rotation on the head frame, the spindle can also rotate. This kind of grinder can expand the processing range, can grind the inner hole and the inner and outer cones with larger taper, and is suitable for small and medium batches and single-piece production. The influence of the parallelism error of the axis of the grinding head spindle in the horizontal plane of the connection between the center of the headstock and the tailstock on the size of the workpiece. When this error occurs, the shape of the ground workpiece will be a cone, that is, the grinding wheel is ground at an angle, and the surface of the cylindrical grinding machine has spiral grinding patterns. The impact of the verticality error of the grinding head movement relative to the machine tool rail on the machining accuracy. The final result of this error is that the axis of the spindle is offset from the center of the headstock and tailstock. When grinding the end face of the shaft shoulder, it will cause an error in the perpendicularity between the end face of the shaft shoulder and the axis of the workpiece. When grinding the outer circle, it will affect the surface roughness and produce spiral grinding lines.