-
公开(公告)号：US10933458B2
公开(公告)日：2021-03-02
申请号：US16225748
申请日：2018-12-19
申请人： Dajun Zhou , Changqing Du , Robert D Miller , Richard J Siemen
发明人： Dajun Zhou , Changqing Du , Robert D Miller , Richard J Siemen
摘要： A stamping press binder assembly for forming a finished stamped product from a blank includes an upper die for at least partially forming the finished stamped product, a stationary punch, an inner lower binder, and an outer lower binder. The inner and outer lower binders are both supported by a single cushion.
-
公开(公告)号：US20180154420A1
公开(公告)日：2018-06-07
申请号：US15367298
申请日：2016-12-02
申请人： Dajun Zhou , Changqing Du , Robert D. Miller
发明人： Dajun Zhou , Changqing Du , Robert D. Miller
CPC分类号： B23D35/001 , B21D28/26 , B23D31/00 , Y10T83/942 , Y10T83/9432
摘要： In a first stage or operation, at least one shear initiation breakthrough opening is formed through the ultra-high strength material sheet at an interior location. A leading terminal end of each of at least two inclined shearing edges of an interior opening shearing tool is positioned in the at least one shear initiation breakthrough opening. The interior opening shearing tool is different from the breakthrough opening forming tool. In a second stage or operation, shearing of the material is initiated from the at least one shear initiation breakthrough opening by advancing the at least two inclined shearing edges of the interior opening shearing tool against the ultra-high strength material sheet and relative to a corresponding shearing tool.
-
公开(公告)号：US11285523B2
公开(公告)日：2022-03-29
申请号：US16455084
申请日：2019-06-27
申请人： Dajun Zhou , Changqing Du , Kaiping Li , Robert D Miller
发明人： Dajun Zhou , Changqing Du , Kaiping Li , Robert D Miller
摘要： A metal blank is clamped between upper and lower binders with the metal blank engaging against a protrusion extending from a binder surface of any of the upper binder, the lower binder, and both upper and lower binders, to create a binder gap between the metal blank and the binder surface adjacent the protrusion. The binder gap prevents cooperating springback control binder elements of the binder surface from actively engaging the metal blank. The metal blank is drawn into a cavity, with the protrusion riding on the metal blank until the protrusion falls off an edge of the metal blank, which closes the binder gap between the metal blank and the binder surface causing the cooperating springback control binder elements to actively engage the blank for the post-forming stretching operation.
-
公开(公告)号：US20200078846A1
公开(公告)日：2020-03-12
申请号：US16128587
申请日：2018-09-12
申请人： Dajun Zhou , Changqing Du , Robert D. Miller
发明人： Dajun Zhou , Changqing Du , Robert D. Miller
摘要： A method of forming a finished stamped product includes positioning a blank on a blank holder between an upper die and a lower die, inserting a movable wedge block between the blank holder and the upper die to establish a first binder gap, and while the movable wedge block is inserted, performing a first strike of the blank by lowering the upper die a first distance to contact and partially form the blank, the movable wedge block limiting downward movement of the upper die relative to the lower die. After the first strike, withdrawing the movable wedge block to establish a second binder gap between the blank holder and the upper die, and while the movable wedge block is withdrawn, performing a second strike of the blank by lowering the upper die a second distance to finally form the blank into the finished product.
-
5.发明申请公开(公告)号：US20180021832A1
公开(公告)日：2018-01-25
申请号：US15214510
申请日：2016-07-20
申请人： Dajun Zhou , Changqing Du , Robert D Miller , Jugraj Singh
发明人： Dajun Zhou , Changqing Du , Robert D Miller , Jugraj Singh
IPC分类号： B21D22/02
CPC分类号： B21D22/02 , B21D5/08 , B21D31/005
摘要： An outer bend radius is cold formed in an outer position within a final arc of the angled corner with an outer bend radius male die member. A central bend radius is cold formed in a central position spaced from the outer position and within the final arc of the angled corner with a central bend radius male die member. An inner bend radius is cold formed in an inner position that is spaced from the outer and central positions and the inner position is within a final arc of the angled corner with an inner bend radius male die member. The angled corner is transferred between each of the bend radii male die members using a continuous advanced high strength metal sheet in which the angled corner is formed.
-
公开(公告)号：US10786842B2
公开(公告)日：2020-09-29
申请号：US16128587
申请日：2018-09-12
申请人： Dajun Zhou , Changqing Du , Robert D Miller
发明人： Dajun Zhou , Changqing Du , Robert D Miller
摘要： A method of forming a finished stamped product includes positioning a blank on a blank holder between an upper die and a lower die, inserting a movable wedge block between the blank holder and the upper die to establish a first binder gap, and while the movable wedge block is inserted, performing a first strike of the blank by lowering the upper die a first distance to contact and partially form the blank, the movable wedge block limiting downward movement of the upper die relative to the lower die. After the first strike, withdrawing the movable wedge block to establish a second binder gap between the blank holder and the upper die, and while the movable wedge block is withdrawn, performing a second strike of the blank by lowering the upper die a second distance to finally form the blank into the finished product.
-
公开(公告)号：US09914164B1
公开(公告)日：2018-03-13
申请号：US15265951
申请日：2016-09-15
申请人： John F Siekirk, III , Dajun Zhou , Changqing Du , Robert D Miller
发明人： John F Siekirk, III , Dajun Zhou , Changqing Du , Robert D Miller
摘要： A binder assembly for stamping sheet material includes an upper die, a stationary punch, an outer ring, and an inner ring. The stationary punch is aligned to be received inside a cavity of the upper die. The outer ring and the inner ring extend around the punch and are movable relative thereto. The inner ring includes teeth on a top surface and is positioned an initial distance from an end of the punch. The upper die is driven along the punch the initial distance such that the punch is received inside the cavity of the upper die a partial distance and a remaining distance such that the punch is received inside the cavity of the upper die a deeper distance.
-
公开(公告)号：US10328504B2
公开(公告)日：2019-06-25
申请号：US15367298
申请日：2016-12-02
申请人： Dajun Zhou , Changqing Du , Robert D Miller
发明人： Dajun Zhou , Changqing Du , Robert D Miller
摘要： In a first stage or operation, at least one shear initiation breakthrough opening is formed through the ultra-high strength material sheet at an interior location. A leading terminal end of each of at least two inclined shearing edges of an interior opening shearing tool is positioned in the at least one shear initiation breakthrough opening. The interior opening shearing tool is different from the breakthrough opening forming tool. In a second stage or operation, shearing of the material is initiated from the at least one shear initiation breakthrough opening by advancing the at least two inclined shearing edges of the interior opening shearing tool against the ultra-high strength material sheet and relative to a corresponding shearing tool.
-
公开(公告)号：US20180071807A1
公开(公告)日：2018-03-15
申请号：US15265951
申请日：2016-09-15
摘要： A binder assembly for stamping sheet material includes an upper die, a stationary punch, an outer ring, and an inner ring. The stationary punch is aligned to be received inside a cavity of the upper die. The outer ring and the inner ring extend around the punch and are movable relative thereto. The inner ring includes teeth on a top surface and is positioned an initial distance from an end of the punch. The upper die is driven along the punch the initial distance such that the punch is received inside the cavity of the upper die a partial distance and a remaining distance such that the punch is received inside the cavity of the upper die a deeper distance.
-
公开(公告)号：US10668516B2
公开(公告)日：2020-06-02
申请号：US15254493
申请日：2016-09-01
申请人： Dajun Zhou , Changqing Du
发明人： Dajun Zhou , Changqing Du
摘要： A sheet metal material is stamped into a formed shape having a side wall between a central portion and a flange portion. The central portion is held between an upper pad and a die, and the flange portion is held between an upper binder and a lower binder. A post-stamping compression force is applied along a length of the side wall of the formed shape. For example, application of the post-stamping compression force includes moving the lower binder relatively toward the upper pad, such as by delaying a return of the upper pad during a portion of a return of the lower binder. During application of the post-stamping compression force, an outward force is applied against an inner surface of the side wall to insure any bowing of the side wall is in an outward direction.
-
-
-
-
-
-
-
-
-
搜索结果
17 条记录 (耗时 0.017 秒)
