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1.
公开(公告)号:US20090158686A1
公开(公告)日:2009-06-25
申请号:US11992286
申请日:2007-05-30
CPC分类号: E04B1/3205 , B21D47/02 , E04B1/19 , E04B1/1903 , E04B1/3211 , E04B2001/1927 , E04B2001/1933 , E04B2001/1984 , E04C2003/0486
摘要: There is provided a truss element in which space truss diagonal members can be easily integrally formed by being drawn in a predetermined direction. This truss element is formed in a corrugated shape with mountain portions 1a and valley portions 2 in left and right directions alternately and cut portions 4a, each which is perpendicular to a ridge line 3 of the mountain portion 1 and leaves a bottom of the valley portion uncut, and cut portions 4b, each which is perpendicular to a bottom line 5 of the valley and leaves a peak of the mountain portion uncut, are formed alternately with spaces in a front and back directions.
摘要翻译: 提供了一种桁架元件,其中空间桁架对角构件可以通过沿预定方向被拉伸而容易地一体地形成。 该桁架元件形成为具有左右方向上的山部1a和谷部2的波纹形状,以及与山部1的脊线3垂直的山形部分的底部的切口部4a, 未切割的切口部分4b和垂直于谷底线5并且留下未切割的山部分的顶点的切割部分4b以前后方向交替地形成空间。
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公开(公告)号:US4976130A
公开(公告)日:1990-12-11
申请号:US429598
申请日:1989-10-31
申请人: Yoshinari Oki , Takeshi Tanaka , Ryoji Tuno , Yoshihiro Yoshida
发明人: Yoshinari Oki , Takeshi Tanaka , Ryoji Tuno , Yoshihiro Yoshida
CPC分类号: B21C25/00
摘要: An extruding die for metallic materials comprising a male die and a female die is provided with a billet-receiving face of the male die shaped into convex form. It is possible to reduce breakage frequency of the extruding die by reducing the tensile stress applied on the male die at the time of the extrusion.
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