Shot peening device and shot peening method

A shot processing device comprising:

• a projector configured to project a projection material to a workpiece;
• a rotatable first rotary table which is disposed at a position including a projection range where the projection material is projected by the projector and a non-projection range outside the projection range;
• a first drive mechanism configured to rotationally drive the first rotary table;
• a plurality of second rotary tables which are disposed on the first rotary table and include a rotary shaft parallel to a rotary shaft of the first rotary table to be rotatable, and on which the workpiece is mounted;
• a second drive mechanism configured to rotationally drive the second rotary table;
• a pressing part which is provided above the projection range on the first rotary table, and configured to move up and down between a withdrawn position spaced above the workpiece on the second rotary table and a pressing position for pressing the workpiece on the second rotary table from above;
• an elevating/lowering mechanism configured to elevate and lower the pressing part;
• a third drive mechanism configured to rotationally drive the pressing part coaxially with the rotary shaft of the second rotary table and in the same rotating direction and at the same rotating speed as the second rotary table;
• a partition part provided on the first rotary table;
• five processing chambers defined by the partition part and arranged in a circumferential direction of the first rotary table;
• and
• a liner provided in each of five processing chambers,
• wherein
• the partition part includes a center wall and five partition walls,
• the center wall constructs a pentagonal prism shaped in a cylinder, the pentagonal prism contains the rotary axis of the first rotary table, an axis of the pentagonal prism is coaxial with the rotation axis of the first rotary table,
• each of the partition walls extends in the radial direction from a bus bar of the pentagonal prism to an edge of the first rotary table and includes a forked distal end,
• each of the five processing chambers moves along the circumferential direction of the first rotary table in accordance with the rotation of the first rotary table, and sequentially changes into a carry-in chamber, a carry-in side seal chamber, a projection chamber, a carry-out side seal chamber, and a carry-out chamber,
• the processing chamber that changed to the carry-in chamber and the processing chamber that changed to the carry-out chamber are adjoined,
• the processing chamber that changed to the carry-in side seal chamber is placed between the processing chamber that changed to the carry-in chamber and the processing chamber that changed to the projection chamber,
• the process chamber that changed to the carry-out side seal chamber is placed between the processing chamber that changed to the projection chamber and the processing chamber that changed to the carry-out chamber,
• the liner includes a first shield and a second shield,
• the first shield is provided between the side wall of the pentagonal prism and the second rotary table, and the first shield is parallel to the side wall of the pentagonal prism, and
• the second shield is provided between the partition part and the second rotary table, and the second shield is parallel to the partition part.