CUTTING DEVICE

PROBLEM TO BE SOLVED: To simplify the structure of a cutting device for cutting an excessive part of a casting plan part, etc. projected from the cast product main body and being an excess when machining the cast product main body. SOLUTION: This cutting device is provided with: a cutting blade group 18 constituted of three sheets of cutting blades 18a, 18b and 18c to cut the casting plan part 12 projected from the cast product main body 10; a supporting means 16 for supporting the casting plan part 12 at a prescribed position; and a die 14 for moving the cast product main body 10 in the cutting blade group 18 direction so that the casting plan part 12 supported by the supporting means 16 and the cast product main body 10 may be cut by the cutting blade group 18. In the cutting blades 18a, 18b and 18c constituting the cutting blade group 18, each side surface side is closely bonded and laminated so that each cutting edge is directed in the same direction. In each cutting blade of the cutting blade group 18, the cutting edge of the cutting blade on an upper layer side is provided to be separated in a direction away from the cutting portion in relation to the cutting edge of the cutting blade 18a so that the cast product main body 10 side of a cutting surface cut by the cutting blade 18a of an lowermost layer is successively cut by the cutting blade on the upper layer side. COPYRIGHT: (C)2008,JPO&INPIT