公开(公告)号：US09901968B2

公开(公告)日：2018-02-27

申请号：US14892311

申请日：2015-06-09

Applicant: SANGO CO., LTD.

Inventor： Kentaro Nozu

IPC: B21D7/04 ,  B21D7/024 ,  B21D7/025 ,  B21D9/03 ,  B21D9/05 ,  B21D9/07 ,  B21D37/14

CPC classification number: B21D7/04 ,  B21D7/024 ,  B21D7/025 ,  B21D9/03 ,  B21D9/055 ,  B21D9/073 ,  B21D37/145

Abstract: A pipe bend die unit comprises a clamp member having a first groove part of half-circular cross section on an outer peripheral surface thereof with a fitting recess extending in a peripheral direction by a first predetermined length on a planar surface perpendicular to a rotary axis, and a counter pressure member having a second groove part of half-circular cross section formed on an outer peripheral surface thereof, and a fitting protrusion extending in a peripheral direction by a second predetermined length from a tip end portion of the second groove part. The fitting protrusion is positioned in the fitting recess so that the first and second groove parts are combined to form a pipe-receiving groove of half-circular cross section. The counter pressure member and the clamp member are hingedly connected to one another so as to be rotatable relative to each other about the rotary axis.

公开(公告)号：US20160256909A1

公开(公告)日：2016-09-08

申请号：US15060101

申请日：2016-03-03

Applicant: MITSUBISHI AIRCRAFT CORPORATION

Inventor： Hiroshi Kawamoto ,  Toyoaki Yasui ,  Kunihiro Kuroi ,  Tomone Kishida

IPC: B21D9/07 ,  B21D37/01

CPC classification number: B21D9/073 ,  B21B19/04 ,  B21B25/00 ,  B21D37/01

Abstract: Provided is a mandrel which is inserted into a pipe material when the pipe material is bent, the mandrel including: a core member having a rod-shaped main body portion and a small-diameter portion which is provided on one end side of the main body portion and which is thinner than the main body portion; and a front end member which is provided on one end side of the core member and which is formed integrally with the core member so as to cover the small-diameter portion.

Abstract translation: 提供一种当管材弯曲时插入到管材中的心轴，该心轴包括：具有棒状主体部分的芯部件和设置在主体的一端侧的小直径部分 并且比主体部分薄; 以及前端部件，其设置在所述芯部件的一端侧，并且与所述芯部件一体地形成以覆盖所述小直径部分。

公开(公告)号：US20160199896A1

公开(公告)日：2016-07-14

申请号：US15018168

申请日：2016-02-08

Applicant: ADDISONMCKEE INC.

Inventor： Andrew Ian Carruthers

IPC: B21D7/16

CPC classification number: B21D7/06 ,  B21D7/022 ,  B21D7/024 ,  B21D7/04 ,  B21D7/16 ,  B21D9/073 ,  B21D26/039 ,  B21J9/18 ,  B30B15/044

Abstract: A tie bar tensioning system that allows a bending machine operator to removably couple an upper end of a bend die post of the bending machine to a base of the bending machine via a tie bar, and to lock the tie bar in a tensioned position. The tensioning system includes a stationary member and a rotatable member, each with aligned tie bar passages for receiving the one end of the tie bar. Both the stationary member and the rotatable member include respective engagement surfaces, with the rotatable member engagement surface being rotatable relative to the stationary member engagement surface between a released position and a tensioned position whereat the rotatable member is selectively lockable. The rotation of the rotatable member with the stationary engagement surface in engagement with the stationary engagement surface longitudinally displacing the rotatable member relative to the stationary member.

公开(公告)号：US08141403B2

公开(公告)日：2012-03-27

申请号：US12466190

申请日：2009-05-14

Applicant: Roberto Gemignani ,  Matteo Strano

Inventor： Roberto Gemignani ,  Matteo Strano

IPC: B21D7/02

CPC classification number: B21D7/024 ,  B21D7/12 ,  B21D9/073

Abstract: A method urges a blank along an axial direction between a movable bending tool and a stationary counter-tool and, while the blank is being moved forwards, of moving the bending tool from a neutral position, in which the blank is not bent, to a working position, in which the blank is bent to the desired bending centerline radius, the working position being rotated with respect to the neutral position by a given angle of rotation depending on the desired bending centerline radius. The method further includes urging the blank between a pair of shoes upstream of the bending tool so as to make the deformation of the blank easier, and the step of moving the bending tool from the neutral position to the working position is carried out by controlling at least two degrees of freedom of the movement of the bending tool in the plane defined by the axial direction and by a transverse direction perpendicular to the axial direction. By virtue of the initial deformation of axial and radial compression of the blank due to the passage between the shoes, the following bending step by the bending tool is made easier and allows for obtaining bending centerline radiuses significantly smaller than the smallest ones obtainable with the traditional variable-radius bending methods.

Abstract translation: 一种方法是在可移动的弯曲工具和固定的对置工具之间沿着轴向方向推动坯料，并且当坯料向前移动时，将弯曲工具从坯料不弯曲的中性位置移动到 工作位置，其中坯料弯曲到期望的弯曲中心线半径，工作位置根据期望的弯曲中心线半径相对于中性位置旋转给定的旋转角度。 该方法还包括在弯曲工具上游的一对鞋之间推动坯料，以使坯料变形更容易，并且将弯曲工具从中立位置移动到工作位置的步骤通过控制在 弯曲工具在由轴向方向和垂直于轴向的横向方向限定的平面中的运动的至少两个自由度。 由于由于鞋之间的通过引起的坯件的轴向和径向压缩的初始变形，弯曲工具的以下弯曲步骤变得更容易，并且允许获得显着小于可用传统方法获得的最小弯曲中心线半径的弯曲中心线半径 可变半径弯曲方法。

公开(公告)号：US20100206036A1

公开(公告)日：2010-08-19

申请号：US12678333

申请日：2008-09-15

Applicant: Alessandro Caporusso

Inventor： Alessandro Caporusso

IPC: B21D9/00

CPC classification number: B21D9/073

Abstract: A pipe bending machine with bending mandrel having a load bearing structure which is particularly resistant to working stresses, comprises an extractor (2) which is fixed in a rear portion of the pipe bending machine, and mandrel rod (13) which extends with its longitudinal axis (g), from the extractor beyond a front portion of the machine, where a bending head (7) which is provided with a die (8) stresses a pipe (T) to be bent, which is inserted in a mandrel (12), by a traction resultant force that is transmitted along the mandrel rod (13) to the extractor (2) that counteracts with a resultant restraining reaction. The pipe bending machine comprises a load bearing structure (1) having a profile such that it contains inside the longitudinal axis (g) of the mandrel rod (13), in such a way that the load bearing structure (1) is subjected mainly to compression stresses.

Abstract translation: 具有弯曲心轴的弯管机具有特别耐受工作应力的承载结构，包括固定在弯管机的后部的抽出器（2）和与其纵向延伸的芯棒（13） （g），从提取器超过机器的前部，其中设置有模具（8）的弯曲头（7）将待弯曲的管（T）应力插入到心轴（12）中 ），通过沿着芯棒（13）传递到与所产生的约束反应抵消的提取器（2）的牵引合力。 管弯曲机包括承载结构（1），其具有使得其包含在所述芯棒（13）的纵向轴线（g）内部的轮廓，使得所述承载结构（1）主要经受 压缩应力。

公开(公告)号：US07131313B2

公开(公告)日：2006-11-07

申请号：US10643945

申请日：2003-08-20

Applicant: Kazuhiko Nakazato

Inventor： Kazuhiko Nakazato

IPC: B21D9/01 ,  B21D9/05

CPC classification number: B21D9/073

Abstract: A method where an inside mandrel is inserted into the inner pipe of the multi-layered pipe, a tubular outside mandrel is inserted into the annular space between the inner pipe and outer pipe, the multi-layered pipe is clamped to a bending die by a clamping die, the multi-layered pipe is held at the rear of a bending portion of the multi-layered pipe by a pressure die and a crease-removing die, and the multi-layered pipe is bent by causing the clamping die to revolve around the bending die. An annular outside mandrel having at least three slits formed in the distal end thereof along generating lines is used as the outside mandrel, and the clamping die is caused to revolve around the bending die with the outside mandrel and inside mandrel protruding toward the distal end of the mutli-layered pipe from a bending start point.

Abstract translation: 将内侧心轴插入多层管的内管的方法，将管状外侧心轴插入到内管与外管之间的环状空间内，将多层管夹持在弯曲模具上 夹紧模具，多层管通过压模和折纹模具保持在多层管的弯曲部分的后部，并且多层管通过使夹紧模具围绕 弯曲模具。 使用具有在其远端沿着生成线形成的至少三个狭缝的环形外心轴作为外心轴，并且使夹紧模具围绕弯曲模具旋转，外心轴和内心轴朝向 来自弯曲起点的多层管。

公开(公告)号：US20040261490A1

公开(公告)日：2004-12-30

申请号：US10854674

申请日：2004-05-27

Inventor： Kazuhiko Nakazato

IPC: B21D009/01

CPC classification number: B21D9/073

Abstract: A core bar for bending of a pipe and a method of bending of a pipe are provided whereby collapse of the pipe can be prevented and bending can be automated at low cost. Ends of the respective core bar portions are formed such that, when the ends of the two cylindrical core bar portions are engaged telescopically, and one core bar portion is bent at a desired angle with respect to the other core bar portion, the outside circumferential surface of the bending region that is formed by these core bar portions becomes a curved surface along the generating line.

Abstract translation: 提供了用于弯曲管道的芯棒和弯曲管道的方法，由此可以防止管道的塌陷并且可以以低成本自动弯曲。 各个芯棒部分的端部形成为使得当两个圆筒形芯棒部分的端部可伸缩地接合时，并且一个芯棒部分相对于另一芯部分部分以所需的角度弯曲，外周面 由这些芯棒部形成的弯曲区域成为沿着发生线的曲面。

公开(公告)号：US06655183B1

公开(公告)日：2003-12-02

申请号：US10195488

申请日：2002-07-16

Applicant: Shih-Tzung Fan

Inventor： Shih-Tzung Fan

IPC: B21D704

CPC classification number: B21D7/021 ,  B21D7/024 ,  B21D9/073

Abstract: A lifting mechanism for a head member of a pipe bender includes a connecting block and an oil cylinder. The connecting block is fixedly connected to the head member. The oil cylinder is horizontally fitted to the main body of the pipe bender. The connecting block is equipped with a propped block on the bottom. The propped block has several spaced horizontal propped surfaces on the bottom thereof which are formed at different heights with slopes formed in between. Wheels are fitted to an outer end of the piston rod of the cylinder to prop up the propped block. Therefore, when die cylinder operates for the wheels to move relative to the propped block, the head member can be adjusted in height together with the connecting block. The piston rod stops moving when the wheels are positioned under a selected one of the horizontal propped surfaces.

Abstract translation: 用于弯管机的头部构件的提升机构包括连接块和油缸。 连接块固定地连接到头部构件。 油缸水平安装在弯管机的主体上。 连接块在底部装有支撑块。 支撑块在其底部具有几个间隔开的水平支撑表面，其形成在不同高度处，其间形成有斜面。 车轮安装在气缸的活塞杆的外端以支撑支撑块。 因此，当模具缸相对于支撑块移动时，头部构件可以与连接块一起被调节高度。 当车轮位于所选水平支撑表面之下时，活塞杆停止移动。

公开(公告)号：US6155091A

公开(公告)日：2000-12-05

申请号：US259662

申请日：1999-02-26

Applicant: Jeffrey P. Hayes ,  Alford Kessinger

Inventor： Jeffrey P. Hayes ,  Alford Kessinger

IPC: B21D9/03 ,  B21D9/07 ,  B21D9/05

CPC classification number: B21D9/03 ,  B21D9/073 ,  Y10T403/32631

Abstract: A mandrel assembly is provided for use with a tube bender including a mandrel rod, a mandrel ball, and a coupler. The coupler is configured to couple the mandrel ball to the mandrel rod and includes a link, a first connector member, a second connector member, and a retainer. The link includes a body and a collar. The first and second connector members are positioned to lie over the second end of the body and cooperate to define a groove sized to receive the collar of the link and a socket sized to retain a projection of the mandrel ball. The retainer is positioned to lie over the first and second connector members and the link to secure the first and second connector members to the link.

Abstract translation: 提供了一种与包括芯棒，心轴球和耦合器的弯管机一起使用的心轴组件。 联接器构造成将心轴球联接到心轴杆，并且包括连杆，第一连接器构件，第二连接器构件和保持器。 链接包括身体和衣领。 第一和第二连接器构件被定位成位于主体的第二端上并且协作以限定尺寸设置成容纳连杆的凸缘的凹槽和尺寸适于保持心轴球的突起的插座。 保持器定位成位于第一和第二连接器构件和连接件之上，以将第一和第二连接器构件固定到连杆上。

公开(公告)号：US4689981A

公开(公告)日：1987-09-01

申请号：US880099

申请日：1986-06-30

Applicant: Ibrahim N. Ibrahim ,  Dennis H. Sansome

Inventor： Ibrahim N. Ibrahim ,  Dennis H. Sansome

IPC: B21D9/04 ,  B21D7/025 ,  B21D9/05 ,  B21D9/07

CPC classification number: B21D9/073 ,  Y10S72/71

Abstract: Apparatus for draw-bending metal tubes and other elongated workpieces of hollow section, in which a mandrel, supported on a bar within the tube, bears against the inner wall of the tube in the region of the bend and helps to prevent the tube section from collapsing or distorting. Vibration transducers are attached to the bar to set up a standing wave of resonant vibration within the mandrel and bar which has the effect of reducing friction between the mandrel and the tube. A special coupling device may be used to attach the transducers to the bar and may also serve to connect the bar to the fixed structure of the apparatus, and the invention includes the complete apparatus when tuned so as to generate a displacement antinode of vibration at the mandrel tip, a displacement node at the point of attachment of the coupling device to the structure, and generally so as to minimize waste of the vibratory energy.

Abstract translation: 用于拉伸金属管和其它细长的中空部分的工件的装置，其中支撑在管内的杆上的心轴在弯曲区域内抵靠管的内壁，并且有助于防止管部分 崩溃或扭曲。 振动传感器连接到杆上，以在心轴和杆内设置共振振动的驻波，其具有减小心轴和管之间的摩擦的作用。 可以使用特殊的耦合装置将换能器附接到杆上，并且还可以用于将杆连接到装置的固定结构，并且本发明包括完整的装置，当被调谐以在所述装置中产生振动的位移波腹 心轴尖端，在耦合装置附接到结构点处的位移节点，并且通常以最小化振动能量的浪费。