| 摘要 |
PROBLEM TO BE SOLVED: To provide a punch for punching a sheet metal and a sheet metal punching device using the same, excellent in durability, in which a through-hole can be formed in an accurate position in addition without burr and which is free from a risk of settling of a projection even after long time use.SOLUTION: A sheet metal punching device 1 includes: an upper die holder 2 which is lifted and lowered with a hydraulic ram or the like; a pressing plate 3 which is fixed to the upper die holder 2; a pressing pad 5 which is hung down from the upper die holder 2 through an elastic member 4; a punch holder 7 which is fixed to the pressing pad 5; a lower die 9 on which a sheet metal 8 to which punching processing is applied is mounted; and a die 10 which is embedded in the lower die 9. |
