| 摘要 |
Provided is a casting device for curved, hollow metallic products, which is of a type that forms a curved, hollow part by back and forth movement of a circular-arc-shaped core along a circular arc line thereof. The casting device can handle a large force acting on a rotating supporter when pulling the circular-arc-shaped core out of a cavity after solidification of cast metal, can stably perform multiple repeated casting processes with high accuracy, and can be used for casting a product with an extremely small radius of curvature without any problem. The casting device is provided with a pair of dies 1 and 2 that form a cavity C1 between mating surfaces 1a and 2a, a circular-arc-shaped core 3 that forms a curved, hollow part H1, a rotating base 4, and a rotational driving means 5 for the rotating base 4. The rotating base 4 is engaged with a recess 12 at a rear surface 1b side of the die 1 in a rotatable manner about the center O of the circular arc of the circular-arc-shaped core 3 as a rotation axis. A core supporter 30 protruding from the rotating base 4 is engaged with a circular-arc-shaped guide hole 13, extending between the inner bottom of the recess 12 and the mating surface 1a, in a movable manner in the circular-arc direction. The circular-arc-shaped core 3 protrudes along the mating surface 1a from a core supporter 30. |
