公开(公告)号：US4772801A

公开(公告)日：1988-09-20

申请号：US925071

申请日：1986-10-30

Applicant: Andre Fornerod ,  Jean-Pierre Gallandre ,  Pierre Ravussin

Inventor： Andre Fornerod ,  Jean-Pierre Gallandre ,  Pierre Ravussin

IPC: B21D5/01 ,  B21D5/02 ,  G01B11/16 ,  G01B11/26 ,  G01B11/00 ,  G01N21/86

CPC classification number: G01B11/16 ,  B21D5/02

Abstract: An optical light beam device for automatically controlling the bending operation when bending with a press brake, comprising an emitter (1), mounted on one side of the press, adapted to produce a large-diameter light beam (8), directed parallel to the bending axis of the workpiece to be bent, and a receiver (4) comprising a box (11) including a screen (14) drilled with a plurality of holes (15) arranged to forming a plurality of light beams (16) of small diameters. The box (11) comprises a deflecting means (17) intended to deflecting the light beams (16) on to a system of photodiodes (18) arranged on the axis of rotation (19) of a rotating motor (12) fast with the box (11) and with an angle coder (13). A microordinator is connected to the photodiodes (18) and to the angle coder (13) and permits the determination of the instantaneous bending angle of the workpiece and the control of the descent of the punch.

Abstract translation: 一种用于在用压制机弯曲时自动控制弯曲操作的光束装置，包括安装在压机一侧的发射器（1），适于产生大直径光束（8），该大直径光束 弯曲的工件的弯曲轴线以及包括盒子（11）的接收器（4），盒子（11）包括用多个孔（15）钻出的筛（14），所述多个孔被布置成形成多个小直径的光束（16） 。 盒（11）包括偏转装置（17），用于将光束（16）偏转到布置在旋转马达（12）的旋转轴线（19）上的光电二极管（18）的系统上，该旋转马达（12）与盒子 （11）和角度编码器（13）。 微点连接到光电二极管（18）和角度编码器（13），并允许确定工件的瞬时弯曲角度并控制冲头的下降。

公开(公告)号：US4550586A

公开(公告)日：1985-11-05

申请号：US547641

申请日：1983-11-01

Applicant: Jean-Daniel Aubert ,  Andre Fornerod

Inventor： Jean-Daniel Aubert ,  Andre Fornerod

IPC: B21D5/02 ,  B21D9/05

CPC classification number: B21D5/006 ,  B21D5/02

Abstract: The device employs a number of detectors (1) mounted at the level of the upper surface of the die (2) and a numerical control system (5). The purpose of the detectors is to signal to the numerical control the moment that the part b of the sheet begins to rise. The device allows the automatic determination of the thickness of the sheet in the area where the bend is to be located, during the course of the forming operation. The thickness of the sheet is then used by a numerical control system to correct the travel of the tool, without interrupting the forming cycle, in such a way as to obtain with high precision the required bend angle.

Abstract translation: 该装置使用安装在模具（2）的上表面的高度处的多个检测器（1）和数字控制系统（5）。 检测器的目的是在片材的部分b开始上升的瞬间向数字控制信号。 该装置允许在成形操作过程中自动确定在弯曲部位的区域中的片材的厚度。 然后由数控系统使用片材的厚度来校正工具的行程，而不会中断成形周期，以便以高精度获得所需的弯曲角度。