Title:
FORMATION OF PLATE MATERIAL OPENING USING PUNCH PRESS
Document Type and Number:
WIPO Patent Application WO/2011/158582
Kind Code:
A1
Abstract:
A ripping cutting punch mold (1) includes a punching blade part (4) and a cutting blade part (5) which are arranged parallel with a ripping direction, the side surfaces of the punching blade part (4) and the cutting blade part (5) being positioned on the same surface and the lower edge of each of the side surfaces being a punching edge (8) and a cutting edge (10). The punching blade part (4) protrudes with a step in a position lower than the cutting blade part (5). The cutting blade part (5) inclines further upwards the further a bottom surface (9) is away from the punching blade part (4), and a middle part in the bottom surface (9) in the arrangement direction of the punching blade part (4) and the cutting blade part (5) is a concave part (9a) having a shape in which the side surfaces are upwardly recessed. The outline of the side surface shape of the concave part (9a) has an angle of inclination which decreases with respect to the horizontal the further the outline is away from the punching blade part (4).
Inventors:
KUROSE, Takanori (LTD. Inuyama Plant 2, Aza-Nakajima, Oaza-Hashizume, Inuyama-sh, Aichi 02, 〒4848502, JP)
黒瀬隆宣 (〒02 愛知県犬山市大字橋爪字中島２番地 村田機械株式会社 犬山事業所内 Aichi, 〒4848502, JP)
SAKAMOTO, Hiroichi (LTD. Inuyama Plant 2, Aza-Nakajima, Oaza-Hashizume, Inuyama-sh, Aichi 02, 〒4848502, JP)
黒瀬隆宣 (〒02 愛知県犬山市大字橋爪字中島２番地 村田機械株式会社 犬山事業所内 Aichi, 〒4848502, JP)
SAKAMOTO, Hiroichi (LTD. Inuyama Plant 2, Aza-Nakajima, Oaza-Hashizume, Inuyama-sh, Aichi 02, 〒4848502, JP)
Application Number:
JP2011/060986
Publication Date:
December 22, 2011
Filing Date:
May 12, 2011
Export Citation:
Assignee:
MURATA MACHINERY, LTD. (3 Minami Ochiai-cho, Kisshoin Minami-ku, Kyoto-sh, Kyoto 26, 〒6018326, JP)
村田機械株式会社 (〒26 京都府京都市南区吉祥院南落合町３番地 Kyoto, 〒6018326, JP)
KUROSE, Takanori (LTD. Inuyama Plant 2, Aza-Nakajima, Oaza-Hashizume, Inuyama-sh, Aichi 02, 〒4848502, JP)
黒瀬隆宣 (〒02 愛知県犬山市大字橋爪字中島２番地 村田機械株式会社 犬山事業所内 Aichi, 〒4848502, JP)
村田機械株式会社 (〒26 京都府京都市南区吉祥院南落合町３番地 Kyoto, 〒6018326, JP)
KUROSE, Takanori (LTD. Inuyama Plant 2, Aza-Nakajima, Oaza-Hashizume, Inuyama-sh, Aichi 02, 〒4848502, JP)
黒瀬隆宣 (〒02 愛知県犬山市大字橋爪字中島２番地 村田機械株式会社 犬山事業所内 Aichi, 〒4848502, JP)
International Classes:
B21D28/34; B21D28/00; B21D28/24
Attorney, Agent or Firm:
SUGIMOTO, Shuji et al. (Higobashi Nittai Bldg, 10-2 Edobori 1-chome, Nishi-ku, Osaka-sh, Osaka 02, 〒5500002, JP)
Claims:
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