公开(公告)号：US06732621B2

公开(公告)日：2004-05-11

申请号：US09903494

申请日：2001-07-13

申请人： Naoto Iwata ,  Masayoshi Fujita ,  Masahiko Natume ,  Yoshiaki Mizuno ,  Mitsutoshi Miyazaki ,  Toshiji Kondou

发明人： Naoto Iwata ,  Masayoshi Fujita ,  Masahiko Natume ,  Yoshiaki Mizuno ,  Mitsutoshi Miyazaki ,  Toshiji Kondou

IPC分类号： B29D300

CPC分类号： B23H9/00 ,  B21C25/10 ,  B23P15/243 ,  B28B3/269 ,  B29C47/0028 ,  B29C47/12 ,  B29L2031/60 ,  Y10T29/49995 ,  Y10T29/49996 ,  Y10T83/0304 ,  Y10T83/0326 ,  Y10T83/0581

摘要： An improved method of machining slots and material feed holes in a molding die such as an extrusion die designed to form a honeycomb structure of ceramics employed as a catalyst carrier of a catalytic converter for automotive vehicles. In one of the preferred embodiments, shallow holes are drilled in a die material and subjected to electrochemical machining to remove material from the bottoms of the shallow holes so that they communicate with the material feed holes without any burrs. In the other embodiment, the slots are cut using a rotary cutter in a given order which will balance reaction forces exerted on the cutter from both side walls of each slot to minimize deformation of the cutter during cutting of the slots, thereby preventing the slots from being curved undesirably.

摘要翻译： 一种在成型模具中加工槽和材料进给孔的改进方法，例如挤出模头，其被设计成形成用作机动车辆的催化转化器的催化剂载体的陶瓷蜂窝结构体。 在一个优选实施例中，在模具材料中钻出浅孔，并进行电化学加工以从浅孔的底部去除材料，使得它们与材料进料孔连通而没有任何毛刺。 在另一个实施例中，使用旋转切割器以给定的顺序切割槽，这将平衡从每个槽的两个侧壁施加在切割器上的反作用力，以最小化在切割槽期间切割器的变形，从而防止槽 不希望地弯曲。