公开(公告)号：US20180075177A1

公开(公告)日：2018-03-15

申请号：US15689209

申请日：2017-08-29

申请人： NIPPON STEEL & SUMITOMO METAL CORPORATION

发明人： Tohru YOSHIDA ,  Shunji HIWATASHI ,  Seiichi DAIMARU ,  Yasuharu TANAKA ,  Takashi ARIGA ,  Toshiyuki NIWA ,  Yukihisa KURIYAMA ,  Satoru OKAYAMA

IPC分类号： G06F17/50

CPC分类号： G06F17/5018 ,  G06F2217/16 ,  Y02T10/82

摘要： An apparatus for identification of a cause of occurrence of springback having a press forming analyzer for numerically analyzing forming conditions of press forming to obtain forming data of a press formed part, a springback analyzer for numerically analyzing said forming data to calculate a springback value, and a processor for processing at least one of a physical property value and physical property quantity data of part of the regions of said press formed part among forming data of said press formed part and making said springback analyzer calculate the springback value based on the results of said processing.

公开(公告)号：US20170008057A1

公开(公告)日：2017-01-12

申请号：US15270585

申请日：2016-09-20

申请人： NIPPON STEEL & SUMITOMO METAL CORPORATION

发明人： Masaaki MIZUMURA ,  Yukihisa KURIYAMA

IPC分类号： B21D7/06 ,  B21D9/04

CPC分类号： B21D7/06 ,  B21D7/066 ,  B21D9/04

摘要： The present invention provides a new bending apparatus and bending method of a tube material which makes it possible to achieve all of bending by a large bending radius not requiring large scale equipment or die, bending resistant to wrinkling and buckling at an inner side of the bending, and bending with a high productivity, that is, a ram bending apparatus using a punch 12 and a set of rolls 13, 13 for three-point bending of a tube material wherein the punch 12 has a groove 12a of a width of the width of a circular tube 11 or more and wherein the set of rolls 13, 13 are supported by a frame 14. The rolls 13, 13 can freely move on the frame 14 in directions away from each other in a state contacting the punch 12. The frame 14 has a hollow space 14a enabling free movement of the descending punch 12 and the circular tube 11 bent along with this during the bending of the circular tube 11.

摘要翻译： 本发明提供了一种管材的新的弯曲装置和弯曲方法，其能够通过不需要大型设备或模具的大的弯曲半径来实现所有弯曲，并且能够抵抗弯曲内侧的起皱和弯曲 ，并且以高生产率弯曲，即使用冲头12的冲头弯曲装置和用于管材三点弯曲的一组辊13,13，其中冲头12具有宽度为宽度的凹槽12a 的圆管11或更多，并且其中一组辊13,13由框架14支撑。辊13,13可以在与冲头12接触的状态下在彼此远离的方向上在框架14上自由移动。 框架14具有中空空间14a，使得下降的冲头12和圆形管11能够在圆形管11的弯曲期间随之一起弯曲而自由运动。