公开(公告)号：US20200206799A1

公开(公告)日：2020-07-02

申请号：US16236618

申请日：2018-12-30

Applicant: John Ralph Stewart, III

Inventor： John Ralph Stewart, III

IPC: B21D25/02 ,  B21D53/92 ,  B64D29/00

Abstract: A method of forming sheet metal skins of the inner fixed structure of a blocker door thrust reverser assembly having convex and concave curvatures. The method includes plastically stretching a sheet of metal about a mandrel having a chordwise central first axis to form a substantially convex shape. The method further includes the addition of features after the substantially convex shape is formed to facilitate plastically stretching a portion or portions of the substantially convex shape into a substantially concave shape about an axis that is substantially parallel to the chordwise central first axis.

公开(公告)号：US20160167099A1

公开(公告)日：2016-06-16

申请号：US14699693

申请日：2015-04-29

Applicant: STEEL FLOWER CO., LTD.

Inventor： Byeong Kwen KIM

IPC: B21D25/02

CPC classification number: B21D25/02 ,  B21D11/02

Abstract: Provided is a multipoint stretch forming apparatus enabling individual clamping control for manufacturing a curved panel, wherein a plurality of stretching units are positioned at both sides at a lower position of a supporting frame in forward and backward directions, and each of the stretching units is independently and individually controlled. Further, since the distance between the right and left stretching units is adjustable in accordance with the size of punch modules and the size of a curved panel to be formed, the precision formation of both wide and narrow curved panels/shapes is possible. Through this technical constitution, an atypical curved panel is formed more efficiently and the loss of panel material is remarkably reduced.

Abstract translation: 提供了一种多点拉伸成形装置，其能够进行各自的夹紧控制以制造弯曲面板，其中多个拉伸单元位于支撑框架的前后方向的下部位置的两侧，并且每个拉伸单元独立地 并单独控制。 此外，由于左右拉伸单元之间的距离可以根据冲头模块的尺寸和要形成的弯曲面板的尺寸而调节，因此可以精确地形成宽和窄的弯曲面板/形状。 通过该技术结构，能够更有效地形成非典型的曲面板，显着降低面板材料的损失。

公开(公告)号：US20160129491A1

公开(公告)日：2016-05-12

申请号：US14892215

申请日：2014-05-26

Applicant: NISSAN MOTOR CO., LTD.

Inventor： Naoto TAGUCHI ,  Masaaki YOSHITOME ,  Manabu HIGUCHI

IPC: B21D25/02 ,  H01M8/0202

CPC classification number: B21D25/02 ,  B21D13/02 ,  B21J13/14 ,  H01M8/0202 ,  H01M8/0206

Abstract: A thin plate-shaped substrate molding device for pressing molding a pre-molded article to a prescribed irregular shape. The thin plate-shaped substrate molding device comprises a first die, a second die, a plurality of tensioning portions and a controller. The first and second dies are movably disposed to be moved towards and away from each other. The second die has protruding portions that protrude towards the first die for forming stretched portions and forming bent portions. The controller controls the first die, the second die and the tensioning portions. The bent portions are tensioned and stretched by the tensioning portions, while the stretched portions of the pre-molded article are still pressed by the first die and the protruding portions of the second die, to impart the shape of the protruding portions to the pre-molded article along the side edges of the protruding portions.

Abstract translation: 一种用于将预成型制品压制成规定的不规则形状的薄板状基板成型装置。 薄板状基板成型装置包括第一模具，第二模具，多个张紧部分和控制器。 第一和第二模具可移动地设置成彼此移动并远离彼此。 第二模具具有朝向第一模具突出以形成拉伸部分并形成弯曲部分的突出部分。 控制器控制第一模具，第二模具和张紧部分。 弯曲部分被张紧部分拉伸和拉伸，而预成型制品的拉伸部分仍然被第一模具和第二模具的突出部分挤压，以将突出部分的形状赋予预制件， 沿着突出部的侧边缘的成型品。

公开(公告)号：US20110126607A1

公开(公告)日：2011-06-02

申请号：US12958204

申请日：2010-12-01

Applicant: Reimund EWALD ,  Niels KOCH

Inventor： Reimund EWALD ,  Niels KOCH

IPC: B21D25/02 ,  B21D25/04

CPC classification number: B21D25/02 ,  B21D25/04

Abstract: A stretch-forming device is provided for stretch forming a workpiece, which has a first bending device having a first bending stamp and a first bending shoe and a second bending device having a second bending stamp and a second bending shoe. In addition, the stretch-forming device has a first shaft and a second shaft, the first shaft mounted so it is rotatable around a first axis and providing a first support surface for the workpiece, and the second shaft mounted so it is rotatable around a second axis and providing a second support surface for the workpiece. The first bending stamp and the second bending stamp are components of a first part of the stretch-forming device, and the first bending shoe and the second bending shoe are components of a second part of the stretch-forming device. The first part and the second part are movable relative to one another. The second part has a first recess and a second recess, the first bending shoe and the first shaft situated on opposite sides of the first recess and the second bending shoe and the second shaft situated on opposite sides of the second recess.

Abstract translation: 提供一种拉伸成形装置，用于拉伸成形工件，该拉伸成形装置具有第一弯曲装置和第二弯曲装置，所述第一弯曲装置具有第一弯曲印模和第一弯曲板以及具有第二弯曲印模和第二弯曲板的第二弯曲装置。 此外，拉伸成形装置具有第一轴和第二轴，第一轴安装成可绕第一轴线旋转并且为工件提供第一支撑表面，并且第二轴安装成可绕其旋转 并且为工件提供第二支撑表面。 第一弯曲印模和第二弯曲印模是拉伸成型装置的第一部分的部件，第一弯曲靴和第二弯曲靴是拉伸成形装置的第二部分的部件。 第一部分和第二部分可相对于彼此移动。 第二部分具有第一凹部和第二凹部，第一弯曲靴和位于第一凹部的相对侧上的第一轴和位于第二凹部的相对侧上的第二弯曲靴和第二轴。

公开(公告)号：US06053026A

公开(公告)日：2000-04-25

申请号：US168353

申请日：1998-10-07

Applicant: Jerrell A. Nardiello ,  Robert J. Christ ,  John M. Papazian

Inventor： Jerrell A. Nardiello ,  Robert J. Christ ,  John M. Papazian

IPC: B21D25/02 ,  B21D37/02 ,  B21D37/00

CPC classification number: B21D25/02 ,  B21D37/02

Abstract: A block-set form die assembly (14) for press or stretch forming a product (12), such as a sheet metal product, is provided. In one embodiment, the block-set form die assembly (14) comprises a pin box (18) having a number of pins (20) contained within a containment box (22). The pins (20) within the containment box (22) can extend longitudinally to form a surface contour (24). A set-block (26) engages the pins (20) to set the longitudinal extension of the pins (20) to form the surface contour (24).

Abstract translation: 提供了用于压制或拉伸成形产品（12）的块状模具组件（14），例如钣金产品。 在一个实施例中，块组件模具组件（14）包括具有包含在容纳箱（22）内的多个销（20）的销盒（18）。 容纳箱（22）内的销（20）可以纵向延伸以形成表面轮廓（24）。 定位块（26）接合销（20）以设置销（20）的纵向延伸部分以形成表面轮廓（24）。

公开(公告)号：US5327764A

公开(公告)日：1994-07-12

申请号：US42549

申请日：1993-04-05

Applicant: Robert E. Weykamp ,  Robert P. Evert

Inventor： Robert E. Weykamp ,  Robert P. Evert

IPC: B21D11/02 ,  B21D25/02 ,  B21D26/021 ,  B21D26/02

CPC classification number: B21D26/021 ,  B21D11/02 ,  B21D25/02 ,  B21D5/00

Abstract: Disclosed is apparatus and a method for the stretch forming of an elongated hollow metal section, such as an aluminum extrusion. The apparatus and method uses one or more constraining means secured to the forming die and a die extension to constrain and support the walls of the elongated hollow metal section against the forces produced by air pressure within the interior of the hollow metal section. The apparatus and methods disclosed herein prevent the formation of wrinkles, crimps and bulges in the walls of the elongated hollow metal section during the stretch forming and reshaping thereof.

Abstract translation: 公开了一种用于拉伸成型细长中空金属部分的装置和方法，例如铝挤压件。 该装置和方法使用固定到成形模具的一个或多个约束装置和模具延伸部来克服由中空金属部分内部的空气压力产生的力来约束和支撑细长中空金属部分的壁。 本文公开的装置和方法防止在拉伸成形和重新成形期间在细长中空金属部分的壁中形成褶皱，卷曲和凸起。

公开(公告)号：US4704886A

公开(公告)日：1987-11-10

申请号：US725897

申请日：1985-04-22

Applicant: Robert P. Evert ,  James A. Miller

Inventor： Robert P. Evert ,  James A. Miller

IPC: B21D7/06 ,  B21D25/02 ,  B21D7/02 ,  B21D11/02 ,  B29C53/08 ,  B29C55/22

CPC classification number: B21D26/045 ,  B21D25/02

Abstract: A novel and improved method of deforming elongated hollow members so as to maintain uniform cross-sectional profile, uniform section thickness reduction, and minimal springback characteristics which includes superimposing in the forming process an internal fluid pressure support for the hollow member which imposes a circumferential tension thereon, a longitudinal tension which plastically elongates the member, and a transverse bending load which plastically bends the member.

Abstract translation: 一种改进的细长型中空构件的变形方法，以便保持均匀的横截面轮廓，均匀的截面厚度减小和最小的回弹特性，其包括在成形过程中叠加用于中空构件的内部流体压力支撑件，其施加周向张力 在其上，使构件塑性伸长的纵向张力和使构件塑性弯曲的横向弯曲载荷。

公开(公告)号：US4685321A

公开(公告)日：1987-08-11

申请号：US779194

申请日：1985-09-23

Applicant: Adrianus H. M. van den Berg ,  Kathryn C. Thompson-Russell

Inventor： Adrianus H. M. van den Berg ,  Kathryn C. Thompson-Russell

IPC: B21D22/26 ,  B21D25/02 ,  C21D8/02 ,  C21D9/46 ,  C22C38/08 ,  H01J9/14 ,  H01J29/07 ,  B21D22/20

CPC classification number: C21D8/0205 ,  H01J9/142

Abstract: Prior drape to drawing a nickel-iron alloy, etched-aperture sheet, it is subjected to an annealing treatment between 700.degree. and 820.degree. C. so as to produce complete recrystallization without grain growth of any significance. During the drawing process the sheet is maintained at a temperature between 150.degree. and 250.degree. C., a 0.2% proof stress of the shadow mask material between 150.degree. and 250.degree. C. being reached below a tensile stress of 150 .sup.N /mm.sup.2. Accurate reproduction of shadow masks is achieved with minimized detrition of the tooling.

Abstract translation: 拉制镍铁合金，蚀刻孔板之前，先进行700〜820℃的退火处理，得到完全重结晶，无任何显着的晶粒生长。 在拉伸过程中，片材保持在150℃和250℃之间的温度下，遮蔽材料在150℃和250℃之间的0.2％屈服应力达到150N / mm2的拉伸应力以下。 通过最小化工具的磨损实现阴影掩模的准确再现。

公开(公告)号：US3990288A

公开(公告)日：1976-11-09

申请号：US594788

申请日：1975-07-10

Applicant: Robert A. Mackenzie

Inventor： Robert A. Mackenzie

IPC: B21D25/02 ,  B21D11/04

CPC classification number: B21D25/02

Abstract: Stretch bending or dieing mechanism including a drawing die press having apparatus for tensioning and/or stretching a workpiece, typically in sheet form, at opposite ends of a lower horizontally oriented stationary die. Prior to or in timed relation with the movement of the movable die to form a workpiece having its opposite ends secured in clamp jaws of sheet clamp units of the tensioning and/or stretching apparatus, fluid pressure actuated motors which support the sheet clamp units are actuated to lower the units to stretch and wrap the workpiece partly about the lower die. Simultaneously the units are moved in a predetermined path away from the lower die to tension and/or stretch the workpiece, as desired, by link mechanism having links of different length spaced lengthwise of the path of movement of the movable die. The pivotal connection of the upper links with the clamp units is adjustable to provide different paths of downward travel of the clamp units which allows for greater or lesser stretch of the workpiece and the pivotal connection of the opposite ends of the upper links are movable to allow upward movement of the clamp units in a path different from that followed during their downward movement, which upward path is parallel with the path of movement of the movable die.Movement of the sheet clamp units in the directions away from the lower die is resisted by the tension in the work sheet during the forming operation. After the forming operation is completed the clamp jaws are opened and the positions of the clamp units relative to the die during their upward movement is controlled by cam means.The upper workpiece gripping or clamping jaws of the clamp units include further workpiece engaging surfaces on the die sides thereof curved to conform to the crosswise curvature or crown of the lower die which is curved or crowned in two directions, that is, both lengthwise and crosswise so as to uniformly stretch a workpiece to the die.

Abstract translation: 拉伸弯曲或冲压机构包括拉伸模压机，其具有用于在下部水平取向的固定模具的相对端处张紧和/或拉伸工件的通常为片状的装置。 在与可移动模具的运动之间或与之相关的时间关系中，形成其相对端固定在张紧和/或拉伸装置的片夹单元的夹爪中的工件，驱动支撑片夹单元的流体压力致动马达 以降低单元以部分地围绕下模拉伸和包裹工件。 同时，单元沿着预定的路径移动离开下模，以根据需要通过具有在可移动模具的运动路径的长度方向上不同长度的链节的连杆机构拉伸和/或拉伸工件。 上连杆与夹紧单元的枢转​​连接是可调节的，以提供不同的夹紧单元的向下行进路径，这允许工件的更大或更小的拉伸，并且上连杆的相对端的枢转连接可移动以允许 夹紧单元在其向下运动期间沿与之后不同的路径向上运动，该向上的路径与可动模具的运动路径平行。

公开(公告)号：US3455140A

公开(公告)日：1969-07-15

申请号：US3455140D

申请日：1967-10-25

Applicant: ANCHOR COUPLING CO INC

Inventor： GALAN JULIAN ,  SMITH TERRY W

IPC: H01R43/058 ,  B21D25/02 ,  B21J7/16

CPC classification number: H01R43/0585