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    • 73. 发明专利
    • Working method, die, and die structure
    • 工作方法,DIE和DIE结构
    • JP2006289399A
    • 2006-10-26
    • JP2005111094
    • 2005-04-07
    • Ricoh Co Ltd株式会社リコー
    • KONDO TAKASHIITO HIDETO
    • B21D19/08
    • B21D28/34B21D28/24B21D28/26B21D31/02
    • PROBLEM TO BE SOLVED: To provide a working method for forming a cylindrical projection part in which two or more slits are formed from the top end side to the proximal end side, dispensing with the conventional slit cutting, and to provide a die structure.
      SOLUTION: In the working method for forming a cylindrical projection part 11 in which a pair of slits 10 are formed from the top end side to the proximal end side using a metal plate 5 as the stock, by the combination of a punch 3 having at least one ridgeline 4 at the top end part and a die 1 having a pair of angular projection parts 2, the cylindrical projection part 11 is formed in such a manner that the apex of each angular projection part 2 in the die 1 is arranged on the line almost same as each ridgeline 4 of the top end part in the punch 3.
      COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供一种用于形成从顶端侧到近端侧形成有两个以上的狭缝的圆筒形突出部的工作方法,分配常规的狭缝切割,并且提供模具 结构体。 解决方案:在使用金属板5作为原料从顶端侧至基端侧形成有一对狭缝10的圆筒形突出部11的加工方法中,通过冲头 3,在顶端部具有至少一个棱线4和具有一对角度突出部2的模具1,圆筒状突起部11形成为使模具1的各倾斜凸部2的顶点为 布置在与冲头3中的顶端部分的每个脊线4几乎相同的线上。版权所有(C)2007,JPO&INPIT