Drag type wheel finishing machine

Abstract

A drag type wheel finishing machine. A spindle is connected to an output shaft of a drive motor secured to an upper platform of a frame structure. Arms are mounted adjacent to a lower end of the spindle. Upright members are joined to distal ends of the arms. Wheel mounting parts are mounted to lower ends of the upright members, and an abrasive polishing media bath is placed in the frame structure to be raised and lowered by a lift mechanism. The lift mechanism is configured such that the media bath can be guided by four columns and supported by four wires. One ends of the wires are connected to a distal end of a piston rod of a drag type hydraulic cylinder installed on the media bath such that, when the wires are simultaneously pulled via the piston rod, the media bath is raised.

1 . A drag type wheel finishing machine in which a spindle extending downward is connected to and rotated integrally with a velocity-reduced output shaft of a drive motor secured to an upper platform of a frame structure, a plurality of arms horizontally extending in respective four directions are mounted adjacent to a lower end of the spindle, upright members are joined to respective distal ends of the arms to extend downward, wheel mounting parts for mounting wheels are mounted to respective lower ends of the upright members, and an abrasive polishing media bath is placed in the frame structure to be raised and lowered by a lift mechanism, wherein the lift mechanism of the abrasive polishing media bath is configured in a manner such that the abrasive polishing media bath can be raised and lowered while being guided by four columns and supported by four wires extending downward from upper ends of the respective columns, and wherein one ends of the wires are connected to a distal end of a piston rod of a drag-type hydraulic cylinder installed on the abrasive polishing media bath in a manner such that, when the wires are simultaneously pulled via the piston rod, the abrasive polishing media bath is raised.  
     
     
         2 . The machine as set forth in  claim 1 , wherein the arms and the upright members are connected with each other by pins in a manner such that the upright members can be pivoted relative to the arms, and upright hydraulic cylinders connect the upright members to the arms in a manner such that the upright members can be adjusted in their respective angular positions.  
     
     
         3 . The machine as set forth in  claim 1 , wherein a sliding door is installed on the abrasive polishing media bath to be guided in a circumferential direction while being opened and closed, upper and lower guide walls are formed on the abrasive polishing media bath to receive upper and lower ends of the sliding door, respectively, the lower guide wall has a Y-shaped section which has a hole for allowing water that has overflowed onto the lower guide wall to be returned into the abrasive polishing media bath, and a flexible seal strip to be brought into contact with the sliding door is affixed to an inner surface of the abrasive polishing media bath to reduce an amount of water overflowing onto the lower guide wall.  
     
     
         4 . The machine as set forth in  claim 1 , wherein rotation wings are formed on the lower end of the spindle and extend downward to reach the same level as the lower ends of the upright members, in a manner such that, when the wheels mounted to the wheel mounting parts of the upright members are rotated, abrasive polishing media collected toward a center of the abrasive polishing media bath can be redistributed in all directions.  
     
     
         5 . The machine as set forth in  claim 1 , wherein the upper platform of the frame structure is provided with a wheel mounting crane for mounting and dismounting the respective wheels to and from the wheel mounting parts; and wherein the wheel mounting crane comprises a first rotation shaft installed on the upper platform to be capable of being horizontally rotated in both directions, a first horizontal lever fastened at one end thereof to the first rotation shaft to extend in a horizontal direction, a second rotation shaft installed on the other end of the first horizontal lever to be capable of being horizontally rotated in both directions, a second horizontal lever fastened at one end thereof to the second rotation shaft and provided with a cylinder, a pulley connected to a distal end of a piston rod of the cylinder adjacent to the other end of the second horizontal lever, and a wheel dragging wire having one end which is secured to the second horizontal lever and the other end which is connected to a wheel hanger, the wheel dragging wire wound on the pulley, and extending downward from the other end of the second horizontal lever.  
     
     
         6 . The machine as set forth in  claim 1 , wherein the upper platform of the frame structure is provided with a wheel mounting crane for mounting and dismounting the respective wheels to and from the wheel mounting parts; and wherein the wheel mounting crane comprises a crane body arranged on the upper platform to be capable of being horizontally rotated in both directions, a quadric wheel moving lever installed on the crane body to be pivoted in upward and downward directions, a crane cylinder secured to the crane body to pivot the wheel moving lever in the upward and downward directions, and a wheel gripper provided to a distal end of the wheel moving lever to selectively grip the wheels.