Barrel polishing apparatus

A barrel polishing apparatus having a barrel tank including a cylindrical fixed tank having a center axis and a rotary disk provided to cover a bottom portion of the fixed tank and rotatable about the center axis, comprising

• a tilting mechanism having a tilting shaft extending in a horizontal direction to tilt the barrel tank around the tilting shaft,
• wherein the tilting shaft is disposed closer to an upper edge of the fixed tank than a centroidal line extending parallel to the tilting shaft and passing through a center of gravity of the barrel tank when viewed from a direction parallel to an extending direction of the tilting shaft,
• wherein the tilting mechanism comprises:
• a coupling member connecting the tilting shaft and the barrel tank;
• a rail extending in a direction perpendicular to the extending direction of the tilting shaft;
• a cylinder having one end connected to the coupling member and another end slidable along the rail;
• and
• a slide stopper provided on the rail to restrict movement of the other end of the cylinder,
• wherein the cylinder is configured to extend in a state in which the other end is in contact with the slide stopper to tilt the barrel tank around the tilting shaft.