Universal grinding spindle head - has both spindles mounted either side of pivot axis for in or external grinding

摘要

The two grinding spindles are mounted parallel to the centre line of the workpiece. The external and internal wheel, face in opposite directions. Either wheel can be brought into contact with the workpiece by swinging the head about a centre line which is close the centre line of the external wheel shaft than to the shaft of the internal wheel. The head can be moved and locked on a support. The arrangement allows facing or traversing of the workface in the manner of a lathe capstan.