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。