公开(公告)号：US20070033981A1

公开(公告)日：2007-02-15

申请号：US10546909

申请日：2004-02-19

Applicant: Gerrit Gerritsen ,  Piero Papi

Inventor： Gerrit Gerritsen ,  Piero Papi

IPC: B21D5/01

CPC classification number: B30B15/007 ,  B21D5/0272 ,  B30B15/245 ,  Y10S72/702

Abstract: Method of correcting a bending operation performed by a press brake, the bottom beam of which contains deformation compensation cylinders, in which a calibration nomogram is pre-recorded using very short calibration pieces, this nomogram establishing a correspondence between the forces measured at the side frames and the pressures applicable to the compensation cylinders in order to keep the bottom beam substantially straight. During a subsequent bending operation, pressure values resulting from this nomogram are applied to the compensation cylinders according to the forces measured at the side frames. A bottom dead centre is recalculated by taking account of the deformation of the top beam, the deformation of the side frames, the actual length and thickness of the piece, and the spring effect.

Abstract translation: 校正由底部梁包含变形补偿缸的压制机执行的弯曲操作的方法，其中使用非常短的校准件预先记录校准列线图，该线图确定在侧框架处测量的力之间的对应关系 以及适用于补偿缸的压力，以便保持底梁基本上直线。 在随后的弯曲操作期间，根据在侧框架处测量的力将由该列线图产生的压力值施加到补偿缸。 通过考虑顶梁的变形，侧框的变形，件的实际长度和厚度以及弹簧的作用来重新计算下死点。

公开(公告)号：US07503200B2

公开(公告)日：2009-03-17

申请号：US10546909

申请日：2004-02-19

Applicant: Gerrit Gerritsen ,  Piero Papi

Inventor： Gerrit Gerritsen ,  Piero Papi

IPC: B31D5/02 ,  B30B15/24

CPC classification number: B30B15/007 ,  B21D5/0272 ,  B30B15/245 ,  Y10S72/702

Abstract: Method of correcting a bending operation performed by a press brake, the bottom beam of which contains deformation compensation cylinders, in which a calibration nomogram is pre-recorded using very short calibration pieces, this nomogram establishing a correspondence between the forces measured at the side frames and the pressures applicable to the compensation cylinders in order to keep the bottom beam substantially straight. During a subsequent bending operation, pressure values resulting from this nomogram are applied to the compensation cylinders according to the forces measured at the side frames. A bottom dead center is recalculated by taking account of the deformation of the top beam, the deformation of the side frames, the actual length and thickness of the piece, and the spring effect.

Abstract translation: 校正由底部梁包含变形补偿缸的压制机执行的弯曲操作的方法，其中使用非常短的校准件预先记录校准列线图，该线图确定在侧框架处测量的力之间的对应关系 以及适用于补偿缸的压力，以便保持底梁基本上直线。 在随后的弯曲操作期间，根据在侧框架处测量的力将由该列线图产生的压力值施加到补偿缸。 通过考虑顶梁的变形，侧框的变形，件的实际长度和厚度以及弹簧的作用来重新计算下死点。

公开(公告)号：US07079919B2

公开(公告)日：2006-07-18

申请号：US10472068

申请日：2002-03-15

Applicant: Gerrit Gerritsen ,  Piero Papi

Inventor： Gerrit Gerritsen ,  Piero Papi

IPC: G06F19/00 ,  B30B15/26 ,  B21C51/00

CPC classification number: B21D5/02

Abstract: A method for setting the travel of a press brake comprising at least one sensor, which measures a physical parameter (p) that varies with the force exerted by the punch on a piece of sheet metal placed on the die, and an electronic device that controls the displacement of the mobile apron. Instantaneous bending angle α under load of the piece is calculated as a function of the displacement; the bearing force (f) of the punch on the piece is calculated using the value of the physical parameter (p); the sequence of values for the instantaneous bending angle/bearing force pair (α, f) is compared to a reference curve (α, f)ref which is pre-recorded during a bending operation involving the same material, and the electronic device calculates a bottom dead center correction taking account of the deviation between the (α, f) pairs and reference curve (α, f)ref.

Abstract translation: 一种用于设定包括至少一个传感器的压制机行程的方法，所述传感器测量随着冲头施加在放置在模具上的一块金属片上的力而变化的物理参数（p），以及控制 移动围裙的位移。 作为载荷的瞬时弯曲角α计算为位移的函数; 使用物理参数（p）的值计算冲头在工件上的支承力（f）; 将瞬时弯曲角/轴承力对（α，f）的值序列与在涉及相同材料的弯曲操作期间预记录的参考曲线（α，f）进行比较 ，并且电子设备考虑到（α，f）对与参考曲线（α，f）之间的偏差来计算下死点校正。

公开(公告)号：US5375340A

公开(公告)日：1994-12-27

申请号：US138348

申请日：1993-10-18

Applicant: Gerrit Gerritsen

Inventor： Gerrit Gerritsen

IPC: B21D5/02 ,  G01B5/24 ,  G01B21/22 ,  B21D5/00

CPC classification number: B21D5/0209 ,  G01B5/24

Abstract: The present invention relates to a measuring device for the bend angle of a metal sheet or plate in a press brake of the type having a reciprocable punch with a sharp bending edge, and a die having two bending edges on either side of a substantially V-shaped groove or channel, the measuring device comprising a rotatory measuring element, the cross-section of which has a circular peripheral part centered around the axis of rotation of the measuring element, and a linear peripheral part which is shorter than the diameter of the circular peripheral part.

Abstract translation: 本发明涉及一种用于具有具有锋利弯曲边缘的往复式冲头的类型的冲压制动器中的金属板或板的弯曲角度的测量装置，以及具有大致V形截面的两侧的两个弯曲边缘的模具， 所述测量装置包括旋转测量元件，所述旋转测量元件的横截面具有围绕所述测量元件的旋转轴线居中的圆形周边部分，以及比所述圆形直径的直径短的直线周边部分 周边部分。

公开(公告)号：US06581427B2

公开(公告)日：2003-06-24

申请号：US09768713

申请日：2001-01-24

Applicant: Gerrit Gerritsen

Inventor： Gerrit Gerritsen

IPC: B21J740

CPC classification number: B21D5/02 ,  Y10T29/53235

Abstract: A method of adjusting the stroke of a press brake having a movable beam (1) supporting a punch (2), a fixed beam (3) supporting a die (4), means of displacing (5, 5′) the movable beam with respect to the fixed beam, said displacement means resting on side frames (6, 6′) immovably attached to the fixed beam, linear encoders (9, 9′) for measuring the displacement of the movable beam with respect to the side frames, at least one sensor (8, 8′) measuring a physical parameter (p) varying with the force exerted by said punch on a metal sheet placed on said die, and an electronic device for controlling (7) the bending movement controlling the speed of said displacement movement between top dead center and bottom dead center (BDC), provided with a calculation means for correcting the value of said bottom dead center depending on the measurement of said displacement and said physical parameter. The difference in thickness between the actual thickness of the metal sheet and the reference value (e) of the thickness of the metal sheet is measured by comparing the actual position of said displacement at which there occurs a predetermined variation &Dgr;p of said physical parameter (p) with the theoretical position of said displacement where this variation &Dgr;p should occur, and the electronic control device (7) calculates a correction of bottom dead center by taking account of said difference in thickness.

Abstract translation: 一种调整具有支撑冲头（2）的可移动梁（1）和支撑模具（4）的固定梁（3）​​的冲压制动器的行程的方法，用于将活动梁移动（5,5'）的装置 相对于固定光束，所述位移装置搁置在不可移动地附接到固定光束的侧框架（6,6'）上，用于测量可移动光束相对于侧框架的位移的线性编码器（9,9'）， 测量由所述冲头施加在放置在所述模具上的金属板上的力所改变的物理参数（p）的至少一个传感器（8,8'）和用于控制（7）控制所述模具的速度的弯曲运动的电子设备 具有上死点和下死点（BDC）之间的位移运动，具有根据所述位移和所述物理参数的测量值校正所述下死点值的计算装置。 金属板的实际厚度与金属板的厚度的参考值（e）之间的厚度差异是通过比较所述位移的实际位置，其中出现所述物理参数的预定变化量DELTAp（p ），其中所述位移的理论位置将发生该变化DELTAp，并且电子控制装置（7）通过考虑所述厚度差来计算下死点的校正。