公开(公告)号：US4511976A

公开(公告)日：1985-04-16

申请号：US395792

申请日：1982-07-06

Applicant: Raymond J. Graf

Inventor： Raymond J. Graf

IPC: B21D5/02 ,  G06F15/46

CPC classification number: B21D5/02 ,  B21D5/006 ,  Y10S72/702

Abstract: An electronic control system for use with hydraulic press brakes to provide compensation for material spring back to accurately produce a desired bend angle in the work piece. The ram force and flank angle of the work piece are monitored during the forming cycle to calculate the theoretical unloading curve of the work piece. Intersection of the plastic portion of the work piece force-angle curve with the theoretical unloading curve provides a calculated point of ram reversal resulting in the desired bend angle. The system compensates for changes in springback resulting from changes in material properties from one work piece to the next.

Abstract translation: 一种用于液压机制动器的电子控制系统，用于为材料回弹提供补偿以在工件中精确地产生期望的弯曲角度。 在成形周期中监测工件的冲头力和侧面角度，计算出工件的理论卸载曲线。 与理论卸载曲线的工件力角曲线的塑性部分的交点提供计算出的压头反转点，导致所需的弯曲角度。 该系统补偿由一件工件到另一件工件的材料特性变化所引起的回弹变化。

公开(公告)号：US20170333967A1

公开(公告)日：2017-11-23

申请号：US15535814

申请日：2015-12-14

Applicant: TRUMPF Maschinen Austria GmbH & Co. KG.

Inventor： Gerhard ANGERER ,  Klemens FREUDENTHALER ,  Josef GAGGL ,  Florian HAUSMANN ,  Matthias HOERL ,  Nenad KOVJENIC ,  Helmut THEIS ,  Manfred WALDHERR

IPC: B21D5/00 ,  B21C51/00 ,  B21D5/02 ,  B21D5/04

CPC classification number: B21D5/006 ,  B21C51/00 ,  B21D5/002 ,  B21D5/004 ,  B21D5/0209 ,  B21D5/0263 ,  B21D5/0272 ,  B21D5/04 ,  B21D55/00

Abstract: The invention relates to a lower tool (1) having a longitudinal-offset measuring device (2), which lower tool (1) is part of a bending tool arrangement for use in a bending press. The lower tool (1) has a tool body (3) having a longitudinal extension (4), in which longitudinal extension (4) a bending recess (5) is provided. The bending recess (5) extends from an upper flat side (6) of the tool body (3) into the latter and is formed at least by two contact surfaces (7). The transition from the upper flat side (6) into the bending recess (5) forms a contact edge (8), which contact edge (8) forms a contact line (9) in the longitudinal extension (4). A sensor (10) for determining a longitudinal offset (18) is arranged in the region of the contact line (9), wherein a sensing portion (11) of the sensor (10) is oriented in the direction of a metal sheet (16) to be bent.

公开(公告)号：US09789525B2

公开(公告)日：2017-10-17

申请号：US14437067

申请日：2013-10-23

Applicant: AMADA COMPANY, LIMITED

Inventor： Takahiro Shibata ,  Yingjun Jin ,  Junichi Koyama

IPC: G06F19/00 ,  B21D5/00 ,  G06F15/00 ,  B21D5/02 ,  G01N3/20

CPC classification number: B21D5/006 ,  B21D5/02 ,  G01N3/20 ,  G06F15/00 ,  G06F19/00

Abstract: A machine tool for bending a workpiece by clamping the workpiece with a die and a punch is configured to: distinguish a material characteristic of the workpiece as an actual value and a nominal value; determine an actual material characteristic during an machining operation and re-calculate an operation target value suitable for the workpiece; and bend the workpiece by operating the punch in accordance with the suitable operation target value thus re-calculated.

公开(公告)号：US20170203349A1

公开(公告)日：2017-07-20

申请号：US15327667

申请日：2015-07-22

Applicant: TRUMPF Maschinen Austria GmbH & Co. KG.

Inventor： Gerhard ANGERER ,  Klemens FREUDENTHALER ,  Florian HAUSMANN ,  Matthias HOERL ,  Nenad KOVJENIC ,  Florian MAIER ,  Helmut THEIS ,  Manfred WALDHERR

IPC: B21D5/00 ,  G01B11/26 ,  B21D5/02

CPC classification number: B21D5/006 ,  B21D5/02 ,  G01B11/26

Abstract: The invention concerns a bending angle measuring device (23), which has an illumination device (25) with at least one light source (26), and an optical means of detection (29) with a light-detecting surface (30). On the bending angle measuring device (23) is arranged at least one axisymmetric body (32) with a reflecting surface (33), wherein a central axis (34) of the axisymmetric body (32) is arranged such that it is aligned parallel to the bending edge, wherein a first light beam (37 transmitted by the illumination device (25) is reflected from the sheet metal part (4) and as a second light beam (39) is directed onto the axisymmetric body (32), and the second light beam (39) is reflected on the axisymmetric body (32), and as a third light beam (40) is directed onto the optical means of detection (29), in particular onto its light-detecting surface (30).

公开(公告)号：US20160236254A1

公开(公告)日：2016-08-18

申请号：US14915751

申请日：2014-08-27

Applicant: TRUMPF MASCHINEN AUSTRIA GMBH & CO. KG.

Inventor： Wolfgang AIGNER ,  Bernhard FISCHEREDER ,  Stefano SPEZIALI ,  Thomas WEISS

IPC: B21D5/01 ,  B21D5/00

CPC classification number: B21D5/01 ,  B21D5/006

Abstract: The invention relates to a bending machine (1) for bending a sheet metal workpiece (2), comprising at least three bending punches (4,5,6) which respectively have working edges (7,8,9) which are aligned parallel with one another. Relative to an initial plane (3) in which a bend section (10) to be made in the sheet metal workpiece (2) lies, the first and the second bending punch (4,5) are positioned on one side and the third bending punch (6) is positioned on the opposite side of the initial plane (3). The working edge (9) of the third bending punch (6) is displaceable between the working edges (7,8) of the first and second bending punches (4,5). The third bending punch (6) has at least one rotary and one translatory degree of freedom in a reference plane oriented at a right, angle to a working edge (7,8,9). The second bending punch (5) has three degrees of freedom in the reference plane (19).

Abstract translation: 本发明涉及一种用于弯曲钣金工件（2）的弯曲机（1），其包括至少三个弯曲冲头（4,5,6），所述弯曲冲头分别具有工作边缘（7,8,9），其平行于 另一个。 相对于在钣金工件（2）中形成的弯曲部（10）的初始平面（3），第一和第二弯曲冲头（4,5）位于一侧，第三弯曲 冲头（6）位于初始平面（3）的相对侧。 第三弯曲冲头（6）的工作边缘（9）可以在第一和第二弯曲冲头（4,5）的工作边缘（7,8）之间移动。 第三弯曲冲头（6）在与工作边缘（7,8,9）成直角定向的参考平面中具有至少一个旋转和一个平移自由度。 第二弯曲冲头（5）在参考平面（19）中具有三个自由度。

公开(公告)号：US20150246382A1

公开(公告)日：2015-09-03

申请号：US14437067

申请日：2013-10-23

Applicant: AMADA COMPANY, LIMITED

Inventor： Takahiro Shibata ,  Yingjun Jin ,  Junichi Koyama

IPC: B21D5/00 ,  G01N3/20 ,  B21D5/02

CPC classification number: B21D5/006 ,  B21D5/02 ,  G01N3/20 ,  G06F15/00 ,  G06F19/00

Abstract: A machine tool for bending a workpiece by clamping the workpiece with a die and a punch is configured to: distinguish a material characteristic of the workpiece as an actual value and a nominal value; determine an actual material characteristic during an machining operation and re-calculate an operation target value suitable for the workpiece; and bend the workpiece by operating the punch in accordance with the suitable operation target value thus re-calculated.

Abstract translation: 用于通过用模具和冲头夹紧工件来弯曲工件的机床被配置为：将工件的材料特性区分为实际值和标称值; 确定加工操作期间的实际材料特性，并重新计算适合于工件的操作目标值; 并且通过根据如此重新计算的合适的操作目标值来操作冲头来弯曲工件。

公开(公告)号：US20120204396A1

公开(公告)日：2012-08-16

申请号：US13027012

申请日：2011-02-14

Applicant: Satoshi Sakai

Inventor： Satoshi Sakai

IPC: B23Q17/20

CPC classification number: B21D5/006

Abstract: A method of bending sheet metal uses a test work piece of the same thickness and material as a finished piece. The test piece is bent into an angled form having an interior angle of any size. The interior angle is measured as are the height of each exterior edge above its opposite leg and the height of the apex of the angled form. Using these measurements, the interior radius of the angled form can be calculated as can the inner and outer lengths of the legs. Using these values the depth of a neutral line, which will have the same length in a work piece whether bent or not, can be determined. Once the depth of the neutral line has been calculated, a bend deduction for the final work piece may be determined and thus the required starting length is determined for any desired interior angle or leg lengths.

Abstract translation: 弯曲金属板的方法使用与成品相同的厚度和材料的测试工件。 试件弯曲成具有任何尺寸的内角的成角度的形式。 测量内角的方式是，每个外边缘高于其相对的腿部的高度以及倾斜形式的顶点的高度。 使用这些测量，可以像腿的内部和外部长度一样计算成角度形状的内部半径。 使用这些值，可以确定中性线的深度，其在工件中具有相同的长度（无论是否弯曲）。 一旦计算了中性线的深度，就可以确定最终工件的弯曲扣除，因此为任何所需的内角或腿长确定所需的起始长度。

公开(公告)号：US06651472B2

公开(公告)日：2003-11-25

申请号：US10300793

申请日：2002-11-21

Applicant: Brahim Chebbi

Inventor： Brahim Chebbi

IPC: B21C5100

CPC classification number: B21D5/02 ,  B21D5/006 ,  B21D5/0209 ,  Y10S72/702

Abstract: A numerical control device for a bending machine includes a keyboard, a memory and a processor. The memory stores one or more groups of data, each containing bending conditions, a bend angle and at least one penetration depth. The memory further stores program instructions for searching whether data input with the keyboard is stored in the memory, in a same group of data, and that sends a signal to the bending machine so that the bending machine peforms bending according to the penetration depth included in the group of data. The processor that executes said program instructions.

Abstract translation: 用于弯曲机的数控装置包括键盘，存储器和处理器。 存储器存储一组或多组数据，每组数据包含弯曲条件，弯曲角度和至少一个穿透深度。 存储器还存储用于搜索用键盘输入的数据是否以相同的数据组存储在存储器中的程序指令，并且向弯曲机发送信号，使得弯曲机根据包含的穿透深度进行弯曲 该组数据。 执行所述程序指令的处理器。

公开(公告)号：US06539763B1

公开(公告)日：2003-04-01

申请号：US09600166

申请日：2000-08-02

Applicant: Brahim Chebbi

Inventor： Brahim Chebbi

IPC: B21D502

CPC classification number: B21D5/02 ,  B21D5/006 ,  B21D5/0209 ,  Y10S72/702

Abstract: The numeral control device for a bending machine comprises means for inputting, as input data, a desired bend angle and bending conditions or criteria, means for storing groups of data, each containing bending conditions, a bend angle and a penetration depth, and means for searching whether the input data is stored in the memory means, in the same group of data. Moreover, means are provided for transmitting a signal representative of a penetration depth included in the group of data stored in the memory means, or for transmitting a signal for controlling the bending machine according to this penetration depth.

Abstract translation: 用于弯曲机的数字控制装置包括用于输入期望的弯曲角度和弯曲条件或标准作为输入数据的装置，用于存储数据组的装置，每个数据组包含弯曲条件，弯曲角度和穿透深度，以及用于 在相同的数据组中搜索输入数据是否存储在存储装置中。 此外，提供了用于发送表示包含在存储装置中存储的数据组中的穿透深度的信号的装置，或用于根据该穿透深度发送用于控制弯曲机的信号。

公开(公告)号：US5148693A

公开(公告)日：1992-09-22

申请号：US783918

申请日：1991-10-29

Applicant: Franco Sartorio ,  Bruno Nicoletta

Inventor： Franco Sartorio ,  Bruno Nicoletta

IPC: B21D5/02

CPC classification number: B21D5/0209 ,  B21D5/006 ,  G01B13/18 ,  Y10S72/702

Abstract: A method for indirect detecting of folding angles (.beta.) of a metal sheet (4) during the folding by a folding machine (1) which has a punch (2), and a die (3) provided with a depressed seat (5) is disclosed. The folding angle (.beta.) is obtained by algebraic summing of an angle (.alpha.) formed by adjacent two walls (10, 10, 13, 13, 13a, 13b) of the punch (2) or the seat (5) and each angle (.alpha.1, .alpha.2) between a portion (7, 8, 8a) of the metal sheet (4) and the said wall. The angles (.alpha.1, .alpha.2) formed between the said portion (7, 8, 8a) and each wall (10, 13, 13a, 13b) are calculated by using the measurements of the distances (D1, D2, D3, D4) from the wall to the portion measured at desired two points on the wall. The distances are detected by a device such as differential transformers (18, 19, 20) and pneumatic gauges (50, 51, 52, 53, 54, 55) incorporated in the punch (2) or the die (3). The angle (.beta., .beta.1, .beta.2) once achieved is calculated during the folding operation after elastic restoring of the metal sheet has been caused. If the angle calculated is less than the desired, a supplementary folding is carried out to achieve a precise folding angle. The whole folding is carried out by a single folding operation without requiring a second positioning of the metal sheet.

Abstract translation: 一种在具有冲头（2）的折叠机（1）和设置有凹陷座（5）的模具（3）折叠期间间接检测金属片（4）的折角（β）的方法， 被披露。 折叠角（β）通过由冲头（2）或座（5）的相邻两个壁（10,10,13,13,13a，13b）形成的角度（α）的代数求和获得，并且每个角度 （4）的部分（7,8,8a）和所述壁之间的角（α1，α2）。 通过使用距离（D1，D2，D3，D4）的测量来计算在所述部分（7,8,8a）和每个壁（10,13,13a，13b）之间形成的角度（α1，α2） ）从墙壁到在墙壁上所需的两点测量的部分。 距离由诸如差分变压器（18,19,20）和并入冲头（2）或模具（3）中的气动计（50,51,52,53,54,55）之类的装置检测。 在金属板的弹性复原之后，在折叠操作期间计算一次实现的角度（β，β1，β2）。 如果计算出的角度小于期望值，则执行补充折叠以实现精确的折叠角度。 整个折叠通过单个折叠操作进行，而不需要金属片的第二定位。