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1. 发明授权

US4583675A Method of production of a part formed with an opening 失效
标题翻译：用开口形成的零件的制造方法
公开(公告)号：US4583675A
公开(公告)日：1986-04-22
申请号：US755219
申请日：1985-07-15
申请人： Izumi Ochiai , Katuo Matui , Tadaaki Ayabe
发明人： Izumi Ochiai , Katuo Matui , Tadaaki Ayabe
IPC分类号： B21D53/16 , B21D11/08 , B21D19/08 , B21D53/18 , B23K11/10
CPC分类号： B21D53/18
摘要： A method of production of a part formed with an opening wherein a metal strip material is subjected to rolling at its outer peripheral portion to have its thickness slightly reduced and shape the metal strip material into a ring-shaped blank, and at least one of inner and outer peripheral portions of the ring-shaped blank is drawn by a press to form at least one flange. The metal strip is supported in coil form on an uncoiler and payed out therefrom and subjected to a straightening before being subjected to rolling. When the metal strip material is rolled, its inner side is wrinkled. The ring-shaped blank is cut and a projection is formed at one end portion and superposed on the other end portion to be joined by electric spot welding to provide a completed ring-shaped blank. When the blank is drawn to form the flanges, by virtue of the wrinkles and thinned outer peripheral portion, the thickness of the part becomes substantially uniform.
摘要翻译：一种制造形成有开口的部分的方法，其中金属带材在其外周部分受到轧制以使其厚度稍微减小并且将金属带材形成为环形坯料，并且内部并且环形坯料的外周部分通过压力机拉伸以形成至少一个凸缘。金属带以螺旋形式支撑在开卷机上并从中取出并在经受轧制之前进行矫直。当金属带材卷起时，其内侧起皱。环形坯料被切割，并且在一个端部处形成突起，并且通过电焊点叠加在待连接的另一端部上，以提供完整的环形坯料。当坯料被拉伸以形成凸缘时，由于褶皱和变薄的外周部分，部件的厚度变得基本均匀。

2. 发明授权

US4597171A Tube-enlarging press for use in heat exchanger fabrication 失效
标题翻译：用于热交换器制造的放大管
公开(公告)号：US4597171A
公开(公告)日：1986-07-01
申请号：US641676
申请日：1984-08-17
申请人： Yukio Kitayama , Izumi Ochiai , Yoshio Nozawa , Masahiro Miyagi , Tadaaki Ayabe , Katsuharu Uehara
发明人： Yukio Kitayama , Izumi Ochiai , Yoshio Nozawa , Masahiro Miyagi , Tadaaki Ayabe , Katsuharu Uehara
IPC分类号： B21C37/24 , B21D39/20 , B21D53/08 , B23P15/26 , B21D53/02 , B23Q3/00
CPC分类号： B21D53/085 , Y10T29/49352 , Y10T29/49375 , Y10T29/49895 , Y10T29/49998 , Y10T29/53122
摘要： Disclosed is a tube-enlarging press in which clamping units are provided for preventing the fins and tubes used in a heat exchanger, from being buckled. The clamping units are provided with a through-hole for permitting the passage therethrough of mandrels falling outside of the area of the fin when the mandrels are lowered during the tube enlarging process. Therefore, the arrangements and preparations for replacement of the mandrels can be omitted.
摘要翻译：公开了一种扩管压力机，其中设有夹紧单元以防止在热交换器中使用的翅片和管被弯曲。在管扩大过程中，当心轴下降时，夹紧单元设置有通孔，用于允许在芯片的区域外部落下的心轴的通过。因此，可以省略用于更换心轴的布置和准备。

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