-
公开(公告)号：US10946431B2
公开(公告)日：2021-03-16
申请号：US16329901
申请日：2017-09-01
摘要： The present invention provides a method for shear processing whereby a sheared surface having a small residual stress and excellent surface properties is formed and the service life of a punch is prolonged in a shear processing for shearing, by a shear line that crosses a weld zone, a workpiece with a large thickness of level difference of a weld zone and/or obtained by welding together a steel sheet having a strength of 1000 MPa or more and another steel sheet. The shearing for shear processing method according to the present invention is a method for shearing a workpiece having a weld zone using a punch and a die, the method characterized in that two protrusions are provided to a cutting edge of the punch, all or part of the weld zone of the workpiece is flanked from the two sides by the two protrusions, and the workpiece is sheared by a shear line that crosses the weld zone.
-
公开(公告)号：US10508909B2
公开(公告)日：2019-12-17
申请号：US15502030
申请日：2015-08-06
发明人： Masahiro Saito , Tohru Yoshida
IPC分类号： G01B21/20 , B21D22/26 , G01B11/24 , G06T17/30 , B21D22/00 , B21D53/88 , G01N21/95 , G01N21/88
摘要： Provided is a line displacement evaluation method of evaluating line displacement occurring in a press-formed article in press forming of forming a character line. This method includes acquiring a cross section profile of the press-formed article measured so as to traverse the character line formed in the press-formed article; calculating a 4th order differential coefficient of the acquired cross section profile; and evaluating the line displacement, on the basis of the calculated 4th order differential coefficient of the cross section profile.
-
公开(公告)号：US11020785B2
公开(公告)日：2021-06-01
申请号：US15741345
申请日：2016-06-27
摘要： A method and apparatus for manufacturing a press component without generating cracks in a flange on an inner circumferential side of a curved portion includes press working by a free bending method on a blank consisting of an ultra-high tensile strength steel sheet. A press component is manufactured by performing cold press working on a blank of an ultra-high tensile strength steel sheet. By the press working, a material inflow facilitating portion that increases the amount by which a portion of the blank to be formed into an end portion of the press component flows into a portion of the blank to be formed into a flange on an inner circumferential side of the curved portion of the press component is provided in the vicinity of the portion of the blank to be formed into the flange on an inner circumferential side of the curved portion of the press component.
-
公开(公告)号：US10858048B2
公开(公告)日：2020-12-08
申请号：US16097792
申请日：2017-05-09
发明人： Masahiro Saito
IPC分类号： B62D25/20 , B21D22/02 , B21D47/01 , B62D25/04 , B21D35/00 , B21D22/26 , B21D24/00 , B21D53/88
摘要： A structural member of an integral shaped article using steel sheet having a tensile strength of 590 MPa or more improved in formability, produced using a die or blank holder provided with a space at least at part of a position contacting a blank at the time of pressing it. The structural member comprises a top sheet part including at least one recessed part at an outside edge part in a plan view, a first vertical wall part extending bent from a part or all of an outside edge part including the recessed part in the top sheet part, a first flange part extending bent from an edge of the first vertical wall part at an opposite side to the top sheet part, and a second vertical wall part extending bent from an edge of the top sheet part different from the outside edge part including the recessed part, and at least one projecting part on the top sheet part, the first vertical wall part, or the first flange part.
-
公开(公告)号：US10695815B2
公开(公告)日：2020-06-30
申请号：US15575824
申请日：2016-05-10
发明人： Masahiro Saito , Yoshiaki Nakazawa , Kenichiro Otsuka , Yasuhiro Ito , Masanori Yasuyama , Masatoshi Tokunaga
摘要： A press-formed product is shaped by press-working from a tailored blank made up of a plurality of metal sheets butt-welded together. The press-formed product includes a flange section, and an arc-shaped area which is an area of the flange section which is formed by stretch flange deformation, and in which an inner peripheral edge is open. A weld line of the tailored blank intersects with the inner peripheral edge and an outer peripheral edge of the arc-shaped area. An angle θ formed by the weld line and a maximum principal strain direction of the stretch flange deformation is 17 to 84°.
-
公开(公告)号：US10807137B2
公开(公告)日：2020-10-20
申请号：US15544054
申请日：2016-01-25
摘要： A method for producing a press-formed product that includes a pair of flat sections and a bend section that connects the flat sections, in which a bending radius of the bend section is R2 and an interior angle formed by the pair of flat sections is θ2, includes the steps bellow. In the first forming step, an intermediate formed product including a bend section in which a bending radius is R1 and an interior angle is θ1 is formed. In the second forming step, a portion of a bend section of the intermediate formed product is formed into the bend section of the press-formed product. R1, θ1, R2 and θ2 satisfy the conditions of Formulae (1) to (3) below: 1.05
-
公开(公告)号：US10023238B2
公开(公告)日：2018-07-17
申请号：US15111488
申请日：2015-02-03
摘要： A front pillar lower outer includes a bent portion, and a first region and a second region, and is a skeletal component for automobile that is assumed to receive a collision load along the extending direction of the first region. The outer is constituted by attaching a first member that is arranged on a first region side, and a second member that is arranged on a second region side. An attachment line of the both members is arranged in a predetermined zone between a first boundary and a second boundary. The plate thickness of the first member is larger than the plate thickness of the second member.
-
-
-
-
-
-
搜索结果
7 条记录 (耗时 0.016 秒)
