Pressure-medium-actuated swivel motor

摘要

The invention relates to a pressure-medium-actuated swivel motor whose housing, cylindrical in the interior, accommodates a sleeve-shaped piston, a sleeve firmly coupled to the piston and, in its interior, a pivot pin projecting with its end from the housing and also a ring which is pressed by a housing cap against a shoulder in the housing and is secured at the end face by means of a fine tooth system. In this arrangement, the ring and the sleeve on the one hand as well as the sleeve or the piston coupled to it and the pivot pin on the other hand are connected so as to be axially displaceable towards one another and rotatable towards one another via threads or via rollers engaging in helical grooves. The object of the invention is to create means of being able to make an even finer angular adjustment. The invention achieves this object owing to the fact that the tooth spacing of the fine tooth system at the end face of the rings, the cap end face and/or the shoulder is less than 1 mm, that the number of teeth and/or their direction on the end face of the ring is different than on the end face of the cap and/or the shoulder of the housing, and that the housing and the ring are made of materials of different hardness. <IMAGE>