| 摘要 |
PROBLEM TO BE SOLVED: To provide a punched blade to simply form a punching die in which a cross-form cut is formed. SOLUTION: This blade comprises a first punching blade 11 wherein chamfers 13 and 14 are formed in the two surfaces of one side of a knife blade 12 and a cutting edge 15 is formed at a cross part between the chamfers 13 and 14; and a second punching blade 21 wherein chambers 33 are formed on the two surfaces of one side of a knife blade 22 and a cutting edge 25 is formed at a cross part between the chambers 23, the first and second punching blades being arranged in a cross-form state. A stepped part 16 to decrease the thickness of the cutting edge parts is formed at the flank of the first punching blade 11 throughout an overall length. A protrusion part 26 protruding to a position above the stepped part 16 of one punching blade 11 is formed at the edge of the second punching blade 21 and an inclination edge 27 supported by the chamfer 14 of the first punching blade 11 is formed at the edge of the protrusion part 26. This constitution combines in a crossform state the second punching blade 21 throughout the overall length of the first punching blade 11 by the stepped part 16 formed at the side of the first punching blade 11 and facilitates formation of a punching die.
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