公开(公告)号：US06233988B1

公开(公告)日：2001-05-22

申请号：US09548599

申请日：2000-04-13

Applicant: Hiroyuki Kojima

Inventor： Hiroyuki Kojima

IPC: B21D502

CPC classification number: B21D5/02 ,  B21D5/0272

Abstract: A bending method and bending apparatus directed to avoiding the risk of die breakage and damage to ram coupling parts due to an abnormal condition of a ram drive shaft and directed to achieving high-accuracy bending in which a uniform bend angle can be produced throughout the entire length of a workpiece without forming a boat-formed belly. In a press brake having three or more drive shafts, the deformation amounts of the ram and the table at each shaft-load imposed point are calculated based on input bending process data. A target closest distance between the punch and the die at each shaft-load imposed point is calculated from its corresponding deformation amounts. The difference between the actual bend angle of the workpiece after bending and a target bend angle is obtained at at least three positions, that are, the ends and center of the workpiece. From these differences, a correction amount for the moving amount of the ram at each shaft-load imposed point is obtained. Further, an adequate limit for the pressing force to be generated by each drive shaft is calculated based on the bending process data and the ram is driven by independently controlling each drive shaft so as not to generate a pressing force exceeding the set limit. To detect an abnormal situation due to abnormal movement of a drive shaft, a line connecting the positions of the drive shafts disposed at the points corresponding to the ends of the workpiece is obtained and the respective deviations of other drive shafts from the connecting line are obtained. If one of the deviations exceeds a preset allowable value, an abnormal situation is detected.

公开(公告)号：US6164114A

公开(公告)日：2000-12-26

申请号：US413913

申请日：1999-10-04

Applicant: Bruno J. Pelech, Jr.

Inventor： Bruno J. Pelech, Jr.

IPC: B21D5/02

CPC classification number: B21D5/0272

Abstract: A compensation device (10) for a press brake that provides vertical arcuate adjustment to a die holding an elongated workpiece to be configured by the press brake. The compensation device (10) includes a die holder member (18) that removably receives the die, an elongated wedge (14) having an inclined upper surface (60) that congruently engages an inclined lower surface (82) of the die holder member (18), and a press bed engagement member (12) that supports the wedge (14) and positions the die holder member (18) such that the wedge (14) is capable of lateral movement relative to the die holder member (18) thereby arcuately elevating the combined die holder member (18), die and workpiece by adjusting one wedge deformation bolt (76). The arcuately elevated workpiece prevents incomplete bends or "flat spots" from occurring in a mid-portion of the workpiece due to an overloaded or relatively "long" press bed in the press brake. The device (10) further includes the capability of determining the amount of elevation of the die holder member (18) by utilizing a "feeler gauge" to measure the lateral dimension of a gap (102) vertically separating the die holder member (18) and the press bed engagement member (12).

Abstract translation: 一种用于压制机的补偿装置（10），其为保持由压制机构成的细长工件的模具提供垂直弓形调节。 补偿装置（10）包括可移除地容纳模具的模具保持器构件（18），具有与模具保持器构件的倾斜下表面（82）完全接合的倾斜上表面（60）的细长楔块（14） 18），以及支撑所述楔（14）并定位所述模具保持构件（18）的压床接合构件（12），使得所述楔（14）能够相对于所述模座保持构件（18）横向移动，从而 通过调整一个楔形变形螺栓（76），弓形地升高组合的模具座构件（18），模具和工件。 弓形升高的工件防止由于压制机中的过载或相对“长”的压床而在工件的中部发生不完全弯曲或“平坦点”。 装置（10）还包括通过利用“测距仪”来测量垂直分离模具保持器构件（18）的间隙（102）的横向尺寸来确定模具保持器构件（18）的高度的能力， 和压床接合构件（12）。

公开(公告)号：US6018979A

公开(公告)日：2000-02-01

申请号：US111677

申请日：1998-07-08

Applicant: Stephen B. Davis

Inventor： Stephen B. Davis

IPC: B21D5/02 ,  B21D37/08 ,  B21D37/04

CPC classification number: B21D5/0272 ,  B21D37/08 ,  B21D5/02

Abstract: Mating sets of forming punches and dies having different combined working heights are mounted at multiple work stations in a single press brake by means of a variable height forming punch holder. The punch holder has a pair of mating step wedges that are adjustable to increase a working height of a mounted forming punch so that each mating set of forming punches and dies has an equal combined working height. This avoids custom tooling while allowing a sequence of forming operations to occur at multiple work stations without driving tools into contact with each other.

Abstract translation: 具有不同组合工作高度的成型冲头和模具的配合组通过可变高度成形冲头保持器安装在单个压制机中的多个工作站处。 冲头架具有可调节的一对配合步骤楔，以增加安装的成形冲头的工作高度，使得每个配合的成形冲头和模具组具有相等的组合工作高度。 这避免了定制加工，同时允许在多个工作站发生一系列成型操作，而不会使工具相互接触。

公开(公告)号：US5347840A

公开(公告)日：1994-09-20

申请号：US931203

申请日：1992-08-17

Applicant: Michael Wolfgang ,  Lauke Andreas ,  Fritz Werner

Inventor： Michael Wolfgang ,  Lauke Andreas ,  Fritz Werner

IPC: B21D5/02 ,  B30B15/00 ,  B21J13/04

CPC classification number: B30B15/007 ,  B21D5/0272 ,  Y10S72/701

Abstract: A materials press comprising a press table and a sliding table. The contact surfaces between the press table and the sliding table have surface contours which conform to a bending line which would occur in a planar press table when it is placed under a load.

Abstract translation: 一种材料压制机，包括压床和滑动台。 压床和滑台之间的接触表面具有符合弯曲线的表面轮廓，该弯曲线在放置在负载下时将在平面压力台中发生。

公开(公告)号：US5103665A

公开(公告)日：1992-04-14

申请号：US705776

申请日：1991-05-28

Applicant: Jacobus L. van Merksteijn

Inventor： Jacobus L. van Merksteijn

IPC: B30B15/02 ,  B21D5/02 ,  B30B15/04

CPC classification number: B30B15/007 ,  B21D5/0272 ,  B30B1/30 ,  B30B15/041

Abstract: The invention relates to a press such as a folding press and a deep-draw press comprising a press frame with a lower yoke and an upper yoke which are mutually reciprocally movable, wherein the lower yoke and the upper yoke are each provided with co-acting tools and wherein between a yoke and its tool are arranged a curve forming device which comprises a series of curve-forming wedge pairs which lie distributed over the length of the yoke between the yoke and the tool, wherein each curve-forming wedge pair is provided with an apparatus for adjusting the mutual position of the curve-forming wedges of a curve-forming wedge pair.

公开(公告)号：US5012661A

公开(公告)日：1991-05-07

申请号：US459427

申请日：1989-12-29

Applicant: Alberto A. Catti ,  Franco Sartorio ,  Stefano Vergano

Inventor： Alberto A. Catti ,  Franco Sartorio ,  Stefano Vergano

IPC: B21D5/02

CPC classification number: B21D5/0272 ,  B21D5/02

Abstract: A press including a frame which carries a pair of tool-holding beams lying in a common general plane. One of the beams carry a punch and the other a bending die. At least one of the beams is movable towards the opposing beam to perform a working stroke, and in the opposite direction. According to the invention, the movable beam is divided, at least effectively, into a number n of sections, n being equal to or greater than 2. The devices for moving the beam are constituted by n=1 servomotor units each of which is provided with a support coupled to the movable beam and is adapted to exert a force, through this support, for thrusting the movable beam towards the opposite beam during the working stroke. Two servomotor units are end units whose supports are coupled to respective ends of the movable beam. The other remaining servomotor is an intermediate unit whose support is situated in the transition zone between one section and another. If P is the total force thrusting the movable beam towards the opposing beam, each end unit is adapted to exert a thrust force of P/2(n-1) on the movable beam through its support. A position transducer is associated with each support and the servomotor units are subject to a common control processor having inputs connected to the transducers and outputs connected to the servomotor units. The processor is adapted to control each unit so that all the units impart identical movements and speeds of movement of their supports and to the movable beam.

Abstract translation: 一种压机，其包括承载位于公共总平面中的一对工具夹持梁的框架。 其中一个梁带有一个冲头，另一个是弯曲模具。 梁中的至少一个可朝向相对的梁移动以执行工作行程，并且沿相反方向。 根据本发明，可移动光束至少有效地被划分为数个n个部分，n等于或大于2.用于移动光束的装置由n = 1个伺服电机单元构成，每个伺服电动机都设置 具有联接到可移动梁的支撑件，并且适于通过该支撑件施加力，以在工作冲程期间将可移动梁推向相对的梁。 两个伺服电机单元是端部单元，其支撑件联接到可移动梁的相应端部。 其余的伺服电机是一个中间单元，其支撑位于一段与另一段之间的过渡区。 如果P是将可移动光束推向相对光束的总力，则每个端部单元适于通过其支撑件在可移动光束上施加P / 2（n-1）的推力。 位置传感器与每个支撑件相关联，并且伺服电动机单元经受公共控制处理器，其具有连接到换能器的输入和连接到伺服电机单元的输出。 处理器适于控制每个单元，使得所有单元赋予它们的支撑件和可移动梁相同的移动和移动速度。

公开(公告)号：US5009098A

公开(公告)日：1991-04-23

申请号：US441106

申请日：1989-11-27

Applicant: Jacobus L. van Merksteijn

Inventor： Jacobus L. van Merksteijn

IPC: B21D5/02 ,  B30B15/00

CPC classification number: B30B15/007 ,  B21D5/0272

Abstract: A press that includes a frame which bears a bending device that includes an upper tool and a lower tool which can be moved in a mutually reciprocal manner. The press also includes a curve-forming element for forming a curve on the bending device. The curve-forming element has curve-forming members slidable over each other in a lengthwise direction and a transverse direction and making contact with each other. The contact surface of the curve-forming members in the lengthwise direction and the transverse direction of the bending device possess the respective determined angles of slope .alpha. and .beta.. The press has an element for adjusting the curve-forming members in the lengthwise direction and the transverse direction, wherein the curve-forming members adjoining each other at the sides preferably form a curve-forming strip which extends substantially over the whole length ofthe bending device. This curve-forming strip is preferably provided with a number of discrete contact surfaces.

Abstract translation: 一种压机，其包括承载弯曲装置的框架，该框架包括上部工具和下部工具，所述上部工具和下部工具可以互相相互的方式移动。 压力机还包括用于在弯曲装置上形成曲线的曲线形成元件。 曲线形成元件具有在长度方向和横向彼此可滑动并且彼此接触的曲线形成构件。 曲线形成构件在弯曲装置的长度方向和横向上的接触表面具有各自确定的斜率α和β的角度。 压力机具有用于在长度方向和横向上调整弯曲形成部件的元件，其中在侧面彼此相邻的弯曲形成部件优选地形成基本上在弯曲装置的整个长度上延伸的弯曲形成条带 。 该曲线形成条优选地设置有多个离散的接触表面。

公开(公告)号：US4653307A

公开(公告)日：1987-03-31

申请号：US641583

申请日：1984-08-17

Applicant: Vaclav Zbornik

Inventor： Vaclav Zbornik

IPC: B21D5/01 ,  B21D5/02 ,  B21D11/22

CPC classification number: B21D5/0272 ,  B21D5/0209 ,  B65G2201/02 ,  Y10T403/7024

Abstract: A bending tool for a bending press comprising an upper die member detachably secured to a vertically reciprocable ram for bending a flat metal workpiece to a predetermined depth in a lower female bending die. The bottom surface of the female bending die cavity is formed by a plurality of flat headed pins in side by side slots or bores. The heads of the pins form the bottom flat surface of a longitudinal groove which forms the bottom die cavity surface. The vertical adjustment of the pins is provided by the interfitting combination of a left side wedge assembly, a middle wedge assembly and a right side wedge assembly. The interfitting prevents displacement of any one of the supporting assemblies for the pins to assure improved bending precision.

Abstract translation: 一种用于弯曲压力机的弯曲工具，包括可拆卸地固定到垂直往复运动的冲头的上模构件，用于将平的金属工件弯曲到下母模弯管中的预定深度。 母弯曲模腔的底面由并排槽或孔中的多个平头销形成。 销的头部形成形成底模腔表面的纵向凹槽的底部平坦表面。 销的垂直调整由左侧楔形组件，中间楔形组件和右侧楔形组件的配合组合提供。 相互配合防止任何一个用于销的支撑组件的位移，以确保改进的弯曲精度。

公开(公告)号：US4426873A

公开(公告)日：1984-01-24

申请号：US369183

申请日：1982-04-16

Applicant: Eugene W. Pearson ,  Arthur L. Pedersen

Inventor： Eugene W. Pearson ,  Arthur L. Pedersen

IPC: B21D5/02 ,  B30B15/00

CPC classification number: B21D5/0272 ,  B30B15/007

Abstract: A flexible wedge for use under the die of a press to compensate for deflection of the die when force is exerted against it, the wedge being elongated and tapering across its width and having graded flexibility along its length with the portions nearer the ends of the wedge being more flexible in order for the wedge to deflect as a uniformly load beam when a concentrated force is applied at its center to position it under a die.

Abstract translation: 在压力机模具下使用的柔性楔形件，用于当力施加在压力机上时补偿模具的挠曲，该楔形件在其宽度上是细长的和渐缩的，并且沿其长度具有渐变的柔性，并且更靠近楔形件的端部 当集中的力在其中心施加以将其定位在模具下方时，为了使楔形物作为均匀的载荷梁而偏转更灵活。

公开(公告)号：US3682465A

公开(公告)日：1972-08-08

申请号：US3682465D

申请日：1970-02-06

Applicant: HAEMMERLE AG MASCHF

Inventor： HANNI EDUARD ALEXANDER

IPC: B21D5/02 ,  B30B15/00 ,  F16F5/00 ,  F16F9/00

CPC classification number: B30B15/007 ,  B21D5/0272

Abstract: A work-table having a table panel, a support element which supports the table panel across a load bearing dimension of the panel, and itself defines over the same dimension with a bottom part an oil chamber the oil in which will support the support element and panel.

Abstract translation: 工作台具有台面板，支撑元件，其支撑横跨板的承载尺寸的台面板，并且其自身与底部部分在同一尺寸上限定油室，油将支撑支撑元件和 面板。