公开(公告)号：US3914975A

公开(公告)日：1975-10-28

申请号：US51294374

申请日：1974-10-07

Applicant: AMADA CO LTD

Inventor： KAWANO SUSUMU

IPC: B21D5/02 ,  B21D7/06

CPC classification number: B21D5/0272

Abstract: A hydraulic press brake is disclosed having a stationary die cooperating with a movable die or punch to perform a bending operation on an elongated workpiece. Movement of the punch is effected by means of a pair of first hydraulic piston-cylinder units each of which is located proximate to one end of the punch. At least one second hydraulic piston-cylinder unit acts on the stationary die at a location intermediate the ends thereof to impart a convex bend to the fixed die to compensate for any concave bending of the movable die during a bending operation, thereby maintaining the surfaces of the fixed and movable dies substantially parallel. Pressurized hydraulic fluid is fed to the first and second hydraulic piston-cylinder units through feed conduits leading from a common pump, with a pressure reducing valve being interposed in the feed conduits between the pump and the second hydraulic piston-cylinder unit.

Abstract translation: 公开了一种具有与可移动模具或冲头配合的固定模具以在细长工件上执行弯曲操作的液压式压力机制动器。 冲头的移动通过一对第一液压活塞 - 气缸单元来实现，每个液压活塞 - 气缸单元都靠近冲头的一端。 至少一个第二液压活塞 - 气缸单元在其端部之间的位置处作用在固定模具上，以向固定模具施加凸形弯曲，以补偿在弯曲操作期间可动模具的任何凹形弯曲，从而保持 固定和可动模具基本上平行。 加压液压流体通过从公共泵引导的进料导管供给到第一和第二液压活塞缸单元，减压阀插入在泵和第二液压活塞 - 气缸单元之间的进料管道中。

公开(公告)号：US3844156A

公开(公告)日：1974-10-29

申请号：US34704373

申请日：1973-04-02

Applicant: HAEMMERLE AG MASCHF

Inventor： HANNI E ,  GYGLI W

IPC: B01J37/00 ,  B21D5/02 ,  B21D7/06

CPC classification number: B21D5/0272 ,  B01J37/0009 ,  B21D5/02 ,  B21D5/0209

Abstract: A bending apparatus for bending sheets consists of a punch and a cooperating die provided with a longitudinally extending recess in its surface turned towards the punch; at the bottom of the recess a stop bar is provided with which the spacing between the bottom and the top of the die recess is adjustable.

Abstract translation: 用于弯曲片材的弯曲装置包括冲头和配合模具，其在其表面上朝向冲头方向设置有纵向延伸的凹部; 在凹部的底部设置止动杆，模具凹口的底部和顶部之间的间隔可调整。

公开(公告)号：US11801545B2

公开(公告)日：2023-10-31

申请号：US17057723

申请日：2019-04-05

Applicant: Amada Co., Ltd.

Inventor： Yingjun Jin ,  Yohei Fuchinoue ,  Hitoshi Omata

IPC: B21D55/00 ,  B21D5/02

CPC classification number: B21D55/00 ,  B21D5/02 ,  B21D5/0272

Abstract: When a sheet metal is sandwiched between a punch held by a punch holder and a die held by a die holder to bend the sheet metal at a set bending angle by moving the punch toward the die, a stroke calculation unit calculates a stroke of the punch for bending the sheet metal at the bending angle in consideration of a spring back amount of the bent sheet metal. A bending load calculation unit calculates a bending load required to bend the sheet metal at the bending angle. A punch deflection amount calculation unit calculates a punch deflection amount according to the bending load. A punch holder deflection amount calculation unit calculates a punch holder deflection amount according to the bending load. A depth value calculation unit calculates a depth value by adding at least the punch deflection amount and the punch holder deflection amount to the stroke.

公开(公告)号：US09808847B2

公开(公告)日：2017-11-07

申请号：US14122214

申请日：2012-05-24

Applicant: Franciscus Wilhelmus Rouweler ,  Martijn Johannes Wolbers ,  Theodorus Jacobus Adrianus de Vries ,  Jan Peters

Inventor： Franciscus Wilhelmus Rouweler ,  Martijn Johannes Wolbers ,  Theodorus Jacobus Adrianus de Vries ,  Jan Peters

IPC: B21D5/02 ,  B30B15/00

CPC classification number: B21D5/0272 ,  B30B15/007

Abstract: The invention relates to a method for compensating deviations in a deforming operation between two beams of a press, comprising of arranging one or more compensating element at a suitably chosen location in the press, detecting the deviations and moving the compensating element(s) relative to the beams by (electro) mechanical means during the deforming operation such that the detected deviations are compensated. The compensating elements can be moved here to an over-compensating position prior to the deforming operation and pressed out of their over-compensating position during the operation by the load on the beam, wherein each compensating element exerts an adjustable resistance force on surrounding parts of the press. It is conversely possible for the compensating elements each to be pressed stepwise to a position compensating the detected deviations during the deforming operation. It is possible to use (piezoelectric) actuators to exert the resistance force and/or to move the compensating elements. The invention further relates to a device with which this compensation method can be performed.

公开(公告)号：US20170066025A1

公开(公告)日：2017-03-09

申请号：US15119557

申请日：2015-02-12

Applicant: AMADA HOLDINGS CO., LTD.

Inventor： Masaki KURIHARA ,  Masahiro NISHIYAMA

IPC: B21D5/02

CPC classification number: B21D5/0272

Abstract: A press brake has a lower table arranged at lower part of left and right side frames, an upper table arranged at upper part of the side frames and facing the lower table, one of the upper and lower tables serving as a ram to be moved vertically, and left and right vertical driving units arranged on the side frames, respectively, to move the ram vertically. Strain detecting sensors are arranged on inner and outer side faces, respectively, of each of the left and right side frames, to detect strain of the side frames in such a way as to cancel horizontal deflection of the side frames and detect vertical deflection thereof.

Abstract translation: 压制机具有布置在左右侧框架的下部的下工位台，设置在侧框架的上部并面向下工作台的上工作台，上下表中的一个用作要垂直移动的压头 以及分别布置在侧框架上的左右垂直驱动单元，以垂直地移动柱塞。 应变检测传感器分别布置在左右侧框架中的每一个的内侧面和外侧面上，以检测侧框的应变，以便消除侧框的水平偏转并检测其侧垂偏差。

公开(公告)号：US20160151820A1

公开(公告)日：2016-06-02

申请号：US14902000

申请日：2014-08-05

Applicant: Bystronic Laser AG

Inventor： Lars Woidasky

IPC: B21D5/02

CPC classification number: B21D5/0272 ,  B21D5/002 ,  B21D5/02 ,  B21D5/0209 ,  B21D5/0281 ,  B21D11/22 ,  B21D43/003 ,  B21D43/26

Abstract: The invention relates to a bending press (1) for bending workpieces, comprising an upper tool (2) and a lower tool (3), a tool holder (4), in which the upper tool (2) is inserted, and a tool holder (5), in which the lower tool (3) is inserted, wherein the upper tool (2) and the lower tool (3) can be fixed in various positions within the respective tool holder (4, 5), a control device (13) for controlling the bending press (1), a sensor device (8), which is connected to the control device (13), and a stop (6) for positioning the workpiece within the bending press (1), wherein the stop (6) can be moved in relation to the tools (2, 3) by means of a drive (9) controlled by the control device (13). The sensor device (8) is designed to detect the position of the upper tool (2) and of the lower tool (3) within the bending press (1) without contact, and the control device (13) is designed to adapt the movement process by means of which the stop (6) is positioned in relation to the tools (2, 3), in dependence on the position of the upper tool (2) and of the lower tool (3) detected by means of the sensor device (8).

Abstract translation: 本发明涉及一种用于弯曲工件的弯曲压力机（1），包括上部工具（2）和下部工具（3），工具夹具（4），上部工具（2）插入其中，工具 其中下工具（3）插入其中，其中上工具（2）和下工具（3）可以固定在各个工具保持器（4,5）内的各种位置，控制装置 （13），连接到控制装置（13）的传感器装置（8）和用于将工件定位在弯曲压力机（1）内的止动件（6），其中， 止动件（6）可以通过由控制装置（13）控制的驱动器（9）相对于工具（2,3）移动。 传感器装置（8）被设计成在弯曲压力机（1）内没有接触地检测上部工具（2）和下部工具（3）的位置，并且控制装置（13）被设计成适应运动 根据通过传感器装置检测到的上部工具（2）和下部工具（3）的位置，止动件（6）相对于工具（2,3）定位的过程 （8）。

公开(公告)号：US08443646B2

公开(公告)日：2013-05-21

申请号：US13089676

申请日：2011-04-19

Applicant: Bruno J. Pelech

Inventor： Bruno J. Pelech

IPC: B21D5/02 ,  B21D37/04

CPC classification number: B21D37/04 ,  B21D5/002 ,  B21D5/0236 ,  B21D5/0272 ,  Y10T29/49963

Abstract: An adjustment compensator device for a press brake die includes an elongate engagement member, an elongate die holder, an elongate primary adjustment wedge and at least two elongate secondary adjustment wedges. The elongate primary adjustment wedge is positioned between and extending along at least a portion of the elongate engagement member and the elongated die holder, and at least a portion of primary adjustment wedge is adjustable in a direction transverse to an elongate length of the engagement member. The at least two elongate secondary adjustment wedges have a length wherein each of the secondary adjustment wedges is less than a length of the primary adjustment wedge. The elongate secondary adjustment wedges are positioned end to end in a direction along a length of the die holder and positioned between the engagement member and the die holder. Each of the elongate secondary adjustment wedges is adjustable in a direction transverse to the elongate length of the engagement member.

Abstract translation: 用于压制模具的调节补偿装置包括细长接合构件，细长模具保持器，细长主调节楔和至少两个细长的次级调节楔。 细长的初级调节楔定位在细长接合构件和细长模具座的至少一部分之间并沿其延伸，并且主调节楔的至少一部分在横向于接合构件的细长长度的方向上是可调节的。 所述至少两个细长的次级调节楔具有长度，其中每个次级调节楔小于初级调节楔的长度。 细长的二次调节楔在沿着模具座的长度的方向上端对齐地定位在接合构件和模座之间。 每个细长的二次调节楔可以在横向于接合构件的细长长度的方向上调节。

公开(公告)号：US20040237623A1

公开(公告)日：2004-12-02

申请号：US10447936

申请日：2003-05-29

Inventor： Robert L. Russell

IPC: B21D009/05

CPC classification number: B21D5/0272

Abstract: A single point compensating die holder for use with the bed of a press brake to provide vertical adjustment and compensating camber to the die holder. The vertical adjustment is provided by a single wedge member supported on the ends and transversely moved in the center by an adjustment means to effect positive or negative vertical crowning on the die holder having a coengaging inclined surface. Transverse movement of the wedge means is effected by the adjustment means engaging a connecting means connected to the wedge means and located in a recess below the wedge means.

Abstract translation: 一个单点补偿模具座，用于与压制机的床一起使用，以提供垂直调整和补偿模具座的弯度。 垂直调节由支撑在端部的单个楔形构件提供，并且通过调节装置在中心横向移动，以在具有共同倾斜表面的模具座上实现正或负的垂直隆起。 楔形装置的横向运动通过调节装置来实现，该调节装置接合连接到楔形装置并且位于楔形装置下方的凹部中的连接装置。

公开(公告)号：US6032509A

公开(公告)日：2000-03-07

申请号：US251523

申请日：1999-02-17

Applicant: Seiju Nagakura

Inventor： Seiju Nagakura

IPC: B21D5/02 ,  B21J13/03 ,  B30B15/02

CPC classification number: B21D5/0272

Abstract: A press brake comprising a bed for supporting a lower mold on the upper surface thereof, a ram for supporting an upper mold in opposition to said lower mold a driver for causing either the ram or the bed to move for bending a workpiece between the upper and lower molds, and a distance adjusting device for adjusting the distance between the upper and lower molds via operation of a wedging unit and a pair of reciprocating units. The wedging unit is disposed either between the ram and the upper mold or between the bed and lower mold, and comprises a pair of movable wedges vertically disposed and a stationary wedge disposed between the movable wedges in contact with the movable wedges. Each of the contacting surfaces of the wedges is formed by a plurality of inclined planes having different angles of inclination. The reciprocating units are connected to the movable wedges to move the movable wedges along the length of the molds. By shifting the movable wedges a predetermined distance in correspondence with actual length of the workpiece, the wedging unit is displaced corresponding to a deflection curve of the bed and the ram, and the workpiece bent at a proper bending angle throughout the whole length thereof.

Abstract translation: 一种压制机，包括用于在其上表面上支撑下模具的床，用于支撑与所述下模相对的上模的冲头，用于使所述冲头或所述床移动以将工件弯曲在上和 下模具，以及用于通过楔形单元和一对往复单元的操作来调节上模和下模之间的距离的距离调节装置。 楔形单元设置在冲头和上模之间或床与下模之间，并且包括一对垂直设置的可动楔形件和设置在与可动楔形体接触的可移动楔块之间的固定楔形件。 楔的每个接触表面由具有不同倾斜角度的多个倾斜平面形成。 往复运动单元连接到可动楔形件，以沿着模具的长度移动可动楔形件。 通过将可动楔形物与工件的实际长度相对应的预定距离移动，楔形单元相应于床和冲头的偏转曲线移动，并且工件在其整个长度上弯曲成适当的弯曲角度。

公开(公告)号：US6000273A

公开(公告)日：1999-12-14

申请号：US176434

申请日：1998-10-21

Applicant: Carl Stover

Inventor： Carl Stover

IPC: B21D5/02 ,  B21D37/04 ,  B21D11/22

CPC classification number: B21D5/0272

Abstract: The press brake punch holder has a main housing adapted for attachment to the ram of a press brake. A pair of mating wedge strips are disposed within the housing, the lower wedge strip being slidable with respect to the upper wedge strip. A U-shaped channel is disposed between two flanges depending from the side walls of the main housing, the exterior surfaces of the flanges being beveled, the U-shaped channel being slidable vertically between the flanges. A bolt extends through each upper wedge, a slot defined in each mating lower wedge, and a slot defined in the bottom of the housing, in order to thread into holes defined in the U-shaped channel. A support member having a cross shape in cross section depends from the U-shaped channel. A plurality of clamps are bolted into the ends of the side arms of the support member, the clamps being spring biased to clamp the shank of a punch between the clamp and the lower leg of the support member. The upper edge of the clamp is beveled to mate with the beveled edges of the flanges. The lower wedge strip may be pulled along its longitudinal axis, either by mechanical, electrical or hydraulic power, the bolts pulling the U-shaped channel vertically upward, causing the upper edge of the clamps to slide up the side of the flanges, thereby opening the clamps simultaneously and releasing the punch.

Abstract translation: 压力制动冲头保持器具有适于附接到压力制动器的压头的主壳体。 一对配合楔形条设置在壳体内，下楔形条可相对于上楔形条滑动。 U形通道设置在从主壳体的侧壁悬垂的两个凸缘之间，凸缘的外表面是倾斜的，U形通道可在凸缘之间垂直滑动。 螺栓延伸穿过每个上楔形物，限定在每个配合的下楔形物中的狭槽和限定在壳体的底部中的狭槽，以便螺纹连接到限定在U形通道中的孔中。 横截面为十字形的支撑构件取决于U形通道。 多个夹具被螺栓连接到支撑构件的侧臂的端部中，夹具被弹簧偏压以将夹具的柄夹紧在支撑构件的夹具和小腿之间。 夹具的上边缘倾斜以与法兰的斜边缘配合。 下楔形条可以通过机械，电动或液压动力沿其纵向轴线拉动，螺栓将U形槽垂直向上拉动，使得夹具的上边缘沿凸缘的侧面滑动，从而打开 夹具同时释放冲头。