公开(公告)号：US4106323A

公开(公告)日：1978-08-15

申请号：US698007

申请日：1976-06-21

Applicant: Eduard J. Haenni ,  Vaclav Zbornik

Inventor： Eduard J. Haenni ,  Vaclav Zbornik

IPC: B21D5/02 ,  B21D7/06

CPC classification number: B30B15/0035 ,  B21D5/0209 ,  B21D5/0227

Abstract: A bending device comprising a bar for connection at one end to a ram of a bending press, the bar having a tapered end fitting into a bending matrix fitted with a displaceable jaw. A sheet of metal placed on the matrix is bent by the bar which is forced down by the ram into a longitudinal groove of the matrix. Means are provided at the side of the matrix to determine the limiting plane of the groove and thereby control the angle and further means vary the depth of the groove.

Abstract translation: 一种弯曲装置，包括用于在一端连接到弯曲压力机的冲头的杆，所述杆具有装配到装配有可移位钳口的弯曲矩阵中的锥形端。 放置在基体上的金属片由被压头压入基体的纵向槽中的杆弯曲。 装置设置在矩阵的侧面以确定凹槽的限制平面，从而控制角度，并且进一步意味着改变凹槽的深度。

公开(公告)号：US4063445A

公开(公告)日：1977-12-20

申请号：US771746

申请日：1977-02-24

Applicant: Eduard A. Haenni ,  Vaclav Zbornik ,  Walter Gygli

Inventor： Eduard A. Haenni ,  Vaclav Zbornik ,  Walter Gygli

IPC: B21D5/02 ,  B21D5/01

CPC classification number: B21D5/0272

Abstract: A machine for processing metal in sheet or plate form, especially for bending metal sheets. The machine comprises a frame with a table base on the frame and a ram which is vertically displaceable in relation to the table base. The ram has an upper tool, while a lower tool is disposed on the table base, these two tools cooperating to process the metal therebetween. The lower tool is elastically supported on the table base by means of a plurality of individual resilient supports which are arranged in a row on the table base. A plurality of intermediate parts are inserted between the table base and the supports and said parts are displaceable groupwise out of the effective region of selected supports into a neutral position, so that only the supports lying directly under the metal sheet workpiece to be processed are effective.

Abstract translation: 一种用于加工金属板材或板材的机器，特别是用于弯曲金属板材。 机器包括在框架上具有桌面基座的框架和相对于桌子基座可垂直移位的冲头。 冲头具有上部工具，而下部工具设置在工作台底座上，这两个工具协同工作以在其间处理金属。 下部工具通过多个单独的弹性支撑件弹性地支撑在工作台基座上，该多个单独的弹性支撑件一排地布置在工作台底座上。 多个中间部件被插入在台架和支撑件之间，并且所述部件可以从选定的支承件的有效区域中分组移位到中立位置，使得只有待处理的金属板工件正下方的支撑件才有效 。

公开(公告)号：US4842473A

公开(公告)日：1989-06-27

申请号：US56603

申请日：1987-05-29

Applicant: Vaclav Zbornik

Inventor： Vaclav Zbornik

IPC: B21D43/10

CPC classification number: B21D43/105 ,  Y10S294/902

Abstract: The manipulator for sheet-metal pieces is used in conjunction with a sheet-metal working machine and has two rotatable holding members (20) displaceable in three dimensions. The holding members (20) each have both clamping tongs (22), which act on the surface of the sheet-metal piece (24) to be worked, and a clamping strip (23) exerting pressure parallel to the sheet surface. It thereby becomes possible for the sheet-metal piece to be worked, in a first working phase when it is still plane, to be grasped along two parallel edges by means of tongs and, after the first working, to be held only by means of the clamping strips.

Abstract translation: 用于金属片的操纵器与金属板加工机一起使用，并且具有三个可移动的三个可旋转保持构件（20）。 保持构件（20）各自具有作用在待加工的金属片（24）的表面上的夹紧钳（22）和施加平行于片材表面的压力的夹紧条（23）。 由此，在平面上的第一工作阶段中，可以通过钳子沿着两个平行边缘抓住金属片，并且在第一次加工之后，仅通过 夹紧条。

公开(公告)号：US5097694A

公开(公告)日：1992-03-24

申请号：US438516

申请日：1989-11-17

Applicant: Eduard Haennit ,  Vaclav Zbornik

Inventor： Eduard Haennit ,  Vaclav Zbornik

IPC: B21D5/02

CPC classification number: B21D5/0272 ,  B21D5/0209 ,  B21D5/0236

Abstract: The invention provides a method of bending a sheet metal piece by means of a bending apparatus. The bending apparatus comprises a bending bar, a bending bar holder, a bottom die comprising an adjustable die bottom and a bending bottom die holder. The method of the invention is particularly suitable for bending sheet metal pieces which are shorter than the bending bar and the bending bottom die. In order to compensate for irregularities during the bending, the regions of the bending bar and bending die, respectivley, which are not influenced by the reactive forces of the sheet metal piece to be bent, are under the influence of compensating members bridging the air gap resulting between bending bar and bending die. Thus, the bending press is evenly loaded and the sheet metal work piece can be bent into an exactly predetermined bending angle.

Abstract translation: 本发明提供一种通过弯曲装置弯曲金属片的方法。 弯曲装置包括弯曲杆，弯曲杆保持器，包括可调模底部的底模和弯曲底模座。 本发明的方法特别适用于弯曲比弯曲杆和弯曲底模更短的金属片。 为了补偿弯曲期间的不规则性，不受弯曲的金属片的反作用力影响的弯曲杆和弯曲模的区域受到桥接气隙的补偿构件的影响 导致弯曲杆和弯曲模具之间。 因此，弯曲压力机被均匀地加载，并且金属板工件可以弯曲成精确预定的弯曲角度。

公开(公告)号：US4509357A

公开(公告)日：1985-04-09

申请号：US497144

申请日：1983-05-23

Applicant: Vaclav Zbornik

Inventor： Vaclav Zbornik

IPC: B21D5/02 ,  B21D17/02

CPC classification number: B21D5/0209

Abstract: Bending presses equipped with the tool arrangement permit sheet blanks or metal plating to be bent in series in accordance with predetermined programs without having to perform time consuming tool exchange operations after each single operative or working step. The tool arrangement comprises a first tool and a second two-piece auxiliary tool. Both parts of the auxiliary second tool are subdivided into segments as is the case also for the first tool and the tool holding fixture or support and are supported at a hydraulic cushion. The segmental matching design of the tool holding fixture, the first tool, the auxiliary second tool and the bottom dies additionally enables the two types of tools and their associated bottom dies to be simultaneously controllably directed into a respective operative position over part of the length of the bending press. Thus, in certain cases at least two pieces of sheet metal, the width of which, when arranged in juxtaposition, is less than the total width of the bending press, can be simultaneously and differently bent using the same working stroke. It is also possible to work at two or more stations in series.

Abstract translation: 配备有工具装置的弯曲机允许板坯或金属电镀根据预定程序串联弯曲，而不必在每个单个操作或工作步骤之后执行耗时的工具更换操作。 工具装置包括第一工具和第二两件式辅助工具。 辅助第二工具的两个部分被细分成段，如第一工具和工具保持夹具或支撑件的情况，并且被支撑在液压垫上。 工具夹具，第一工具，辅助第二工具和底模具的分段匹配设计另外使得两种类型的工具及其相关联的底模能够同时被可控地引导到相应的操作位置， 折弯机。 因此，在某些情况下，至少两片金属板，其宽度并列配置时小于弯曲压力机的总宽度，可以使用相同的工作行程同时且不同地弯曲。 也可以在两个或更多的电台串联工作。

公开(公告)号：US4966029A

公开(公告)日：1990-10-30

申请号：US339074

申请日：1989-04-14

Applicant: Vaclav Zbornik

Inventor： Vaclav Zbornik

IPC: B21D5/02

CPC classification number: B21D5/0209 ,  B21D5/0236

Abstract: The invention provides a method of bending a workpiece to a predetermined bending angle, in which, in a first step, the workpiece is bent to a somewhat greater bending angle and then released. Thereafter, the amount of resilient back motion occurring after the first bending operation is measured. The adjustable die bottom is readjusted such that a bending angle would result in the next bending operation which corresponds to the desired final bending angle minus the amount of resilient back motion. After the second bending operation, the workpiece is released and the legs thereof will resiliently move back to enclose the final predetermined bending angle.

Abstract translation: 本发明提供一种将工件弯曲到预定弯曲角度的方法，其中在第一步骤中，将工件弯曲到稍大的弯曲角度然后释放。 此后，测量在第一弯曲操作之后发生的弹性反向运动的量。 再次调节可调节模底，使得弯曲角度将导致对应于期望的最终弯曲角度的减少弹性反向运动量的下一个弯曲操作。 在第二次弯曲操作之后，工件被释放并且其腿部将弹性回移以包围最终的预定弯曲角度。

公开(公告)号：US4962654A

公开(公告)日：1990-10-16

申请号：US346139

申请日：1989-05-02

Applicant: Vaclav Zbornik

Inventor： Vaclav Zbornik

IPC: B21D5/02

CPC classification number: B21D5/02

Abstract: A method of bending sheet metal pieces by means of a bending apparatus having a bending bar and a bottom die with adjustable die bottom. In a first step, the practical bending behavior of a sample sheet metal piece having a certain thickness and a certain material quality is determined and stored as a reference curve trace. In a second step, when bending further sheet metal pieces with the same thickness and having equal material quality, the effective bending behavior of each sheet metal piece is determined and compared with the stored reference curve trace. Then, the position of the adjustable die bottom is corrected on the basis of the calculated difference.

Abstract translation: 通过具有弯曲杆的弯曲装置和具有可调节模底的底模弯曲金属片的方法。 在第一步骤中，确定具有一定厚度和一定材料质量的样品金属片的实际弯曲行为并作为参考曲线记录存储。 在第二步骤中，当对具有相同厚度并且具有相同材料质量的另外的金属片进行弯曲时，确定每个金属片的有效弯曲行为并与存储的参考曲线进行比较。 然后，基于计算出的差异校正可调节模具底部的位置。

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：US4315425A

公开(公告)日：1982-02-16

申请号：US173674

申请日：1980-07-29

Applicant: Vaclav Zbornik ,  Walter Gygli

Inventor： Vaclav Zbornik ,  Walter Gygli

IPC: B21D37/14 ,  B21D5/02 ,  F16B1/00 ,  F16B21/10 ,  B21D37/04

CPC classification number: F16B21/10 ,  B21D5/0209 ,  B21D5/0236 ,  F16B1/0057

Abstract: An easily releasable hydraulically pressurized clamping block assembly for attaching the bending tool to the ram of a folding press. A first clamping block having a recess to receive the tool abuts a bearing block at the rear thereof and is fitted with pins engaging in bores in the clamping block and in the bearing block while within the bearing block a longitudinal groove is provided which receives a hose which can be pressurized from a fluid pressure source through a control valve. Along the longitudinal groove between the above bores are holes which are fitted with springs which compress the hose when in a non-pressurized state. A modification provides pins with widened heads. Another modification uses straight pins and an intermediate block within the groove to press against the hose. Still another modification provides a groove in the ram itself rather than in a separate block.

Abstract translation: 一种易于释放的液压加压夹紧块组件，用于将弯曲工具附接到折叠式压力机的冲头。 具有用于接收工具的凹部的第一夹紧块在其后部邻接轴承座，并且在轴承座内装配有接合在夹紧块中的轴孔和轴承座中的销，其中提供纵向槽，其接收软管 其可以通过控制阀从流体压力源加压。 沿着上述孔之间的纵向槽是具有弹簧的孔，当处于非加压状态时，该弹簧压缩软管。 修改提供具有加宽头的引脚。 另一种改型使用直销和槽内的中间块压靠软管。 另一个修改在柱塞本身中提供凹槽，而不是在单独的块中。