| 摘要 |
PROBLEM TO BE SOLVED: To provide a technology for improving the punched surface of an object by heating a punching blade.SOLUTION: A cutting die is provided for punching a punching object arranged between upper and lower surface plates 91, 92 by a punching die 1A provided on at least one of the upper and lower surface plates 91, 92. The punching die 1A is provided with a heater 13 for heating the punching blade 12. The heater 13 may be constituted using an electric heating wire, an infrared heater or the like. A direct current or a proper frequency alternating current of about 10-110 V, for example, is used for the electric heating wire. |
