Machine for the abrasive machining of cylindrical parts

A machine for the abrasive machining of a cylindrical part;

• comprising in combination:
• support-and-driving means for supporting and driving the cylindrical part in rotation about its axis and in axial translational motion;
• and
• machining means, comprising a plurality of machining stations for abrasive machining of the cylindrical part with grains of increasing fineness succeeding one another in the direction of axial translational motion of the cylindrical part and acting successively on the cylindrical part during axial translational motion of the cylindrical part, comprising:
• a plurality of supply reels, each for a band of abrasive cloth having grains of increasing fineness in the direction of axial translational motion of the cylindrical part,
• a plurality of take-up reels, each for rewinding a worn abrasive cloth,
• advancing means for continually unwinding each band of abrasive cloth from its supply reel during machining and for rewinding it onto a take-up reel,
• bearing means for applying each band of abrasive cloth with a predetermined pressure onto the cylindrical part during machining, and
• oscillation means for driving the bearing means in an oscillating movement in axial translational motion;
• said bearing means comprising:
• a movable stage, movable in axial translational motion,
• oscillation control means adapted to act on the movable stage,
• a plurality of jacks fastened to the movable stage, and
• a plurality of bearing rollers carried by the jacks.