Amada Company, Limited

Crea S.r.l.

Amada Company, Limited of Japan

Gianpaolo Prunotto

Franco Sartorio

Alberto Arduino

Francesco Sgandurra

Marco Prada

Fabrizio Grassi

Salvatore Arghiracopulos

A method and apparatus for the production of bent sheet metal pieces (12) is disclosed. In the method or apparatus, a cut (14) is made in a sheet of sheet metal (10) that defines the perimeter of piece (12) to be obtained. The cut (14) is interrupted at preselected points to form a series of microjoints (16) that keep the plan development of the piece (12) united with the stiffening frame (18) constituted by the remaining part of the metal sheet (10). At least one window (36, 38) is formed in the stiffening frame (18) in order to allow a pair of bending tools having a length greater than the length of the bend to form a bend (20, 22) on the piece (12) without interfering the stiffening frame (18) while the bend is being formed.

Method and apparatus for the production of bent sheet metal pieces

A system for the creation of commands and control signals for a complete operating cycle of a robot manipulator device of a sheet metal bending installation by simulating the operating environment, in which various parts of the sheet metal bending installation are presented to the user on a video display in a simplified form and on a reduced scale. The video display and a keyboard are connected to a central processor unit and permit the creation of a complete sequence of signals usable for controlling the operation of the bending installation, and permits the presentation of the simulation of the movement of the parts of the installation on the video.

System for creating command and control signals for a complete operating

Device for control of a robot manipulator for a metal sheet bending

The method is of the type in which the metal sheet (W) is manipulated by means of a movable gripping member (G) of a manipulator robot controlled by a programmer (PC) according to a program for positioning successive lines of working of the metal sheet in correspondence with a pair of linear tools (16, 18). The programmer (PC) starts the working program by transporting the metal sheet to the position which corresponds with the first virtual or imaginary working line (B.sub.o). Sensors (S.sub.1, S.sub.2, S.sub.y) detect the position of the virtual working line and signal to the programmer whether and to what extent the position of this virtual working line differs from the correct position. This is equivalent to the entering in the programmer of a datum relating to the displacement of the engagement point (C.sub.o) of the gripping member from its theoretical engagement point (C) on the metal sheet. The programmer moves the gripping member (G) on the basis of the error detected, repositions it relative to the metal sheet (W) at the theoretical engagement point (C).

Method of positioning a metal sheet for a sheetmetal working machine

A press brake for bending plates. A press brake is provided for bending plates, including a pair of dies which act in mutual cooperation to bend a plate, a plate clamping manipulator which grasps and moves a plate which is to be placed in a scheduled location with respect to the dies, and a plate position detector mounted on the press brake in a specified positional relationship with respect to the dies, for detecting a position of the plate grasped by the manipulaator, and controlling the manipulator in response to a signal from the plate position detector.

Plate bending machine equipped with a plate clamping manipulator and a

A device for controlling a manipulator for handling a workpiece processed by a press brake. The press brake is equipped with a side sensor for detecting the horizontal X-axis direction positions parallel to the longitudinal direction of the upper and lower dies of the press brake. The manipulator is arranged to be movable in the X-axis direction and the head of the manipulator is arranged to be rotatable about first and second shafts of the manipulator. The device includes apparatus for inputting a position of the workpiece for an initial bending stage and apparatus for inputting an angle of rotation of the workpiece about the first and/or second shafts of the manipulator for each of a plurality of bending stages. Apparatus for sequentially calculating a position of the workpiece for the second and subsequent bending stages, based on the initial input of the workpiece which is input from the workpiece initial position input means, and the angle of rotation of the workpiece about the first and/or second shafts at each of the bending stages which is input from the workpiece rotation angle input means is inputted from the workpiece rotation angle input means is inputted is included in the device.

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Turin, Italy

Gianpaolo Prunotto