RU2139782C1 - Installation for laser treatment of plate materials - Google Patents

Abstract

FIELD: welding, cutting, applicable in shipbuilding and other branches of mechanical engineering. SUBSTANCE: two two-coordinate positioning systems with two optico-focusing heads attached to them are located on both sides of the plate to be treated. During operation of the installation both positioning systems move the optico-focusing heads interindependently. Radiation to both heads may be emitted either by two lasers, or by one of them with its subsequent separation. EFFECT: enhanced efficiency, especially at cutting of large-diameter parts. 3 cl, 4 dwg

Description

 The invention relates to equipment for laser processing of materials and can be used both independently and as part of flexible production systems for laser cutting or hole punching in sheet materials, laser milling and other types of laser processing.

 The well-known installation for laser processing of sheet materials includes a technological laser, a frame in the form of a table for placing and fixing sheet material, an optical focusing head, a two-coordinate system for moving the optical focusing head over the workspace, which consists of two carriages moving along two mutually perpendicular to the directions, a system for transmitting a laser beam from a technological laser to an optical focusing head, incorporating Turning mirrors, as well as the general control system [1, 2].

 The disadvantages of such installations are the bulkiness of the structure, due to which there is a tendency to arrange the processing plane at an angle to the vertical, as well as low productivity due to the need for sequential cutting of each part.

 There is also known a laser processing installation in which a frame with sheet materials, as well as a two-coordinate system for moving the optical focusing head, are placed vertically [3]. The location of the frame with the sheet material, as well as the two-coordinate system for moving the optical focusing head vertically, allows to reduce the size due to the abandonment of the design in the form of a table and to use for loading and unloading general workshop lifting vehicles, and the two-coordinate moving systems do not interfere with the lifting and lowering operations sheet.

 This installation is the closest technical solution to the claimed object, i.e. prototype.

 The disadvantage of the prototype is the low productivity of the installation.

 The problem solved by the claimed invention is to increase the productivity of the installation. The specified task in the proposed installation for laser cutting of sheet materials, including a technological laser, a control system, a frame with a sheet intended for processing attached to it, is realized due to the fact that two two-coordinate systems for moving two optically focusing heads are placed on both sides of the vertically arranged sheet , the movement of which, generally speaking, is not synchronous, and the radiation can be supplied from two lasers, or from one with its further separation.

 The presence of two two-coordinate moving systems of both optic-focusing heads with independent movements from each other allows laser shaped cutting with greater productivity than that of the prototype.

 The installation is as follows (Fig. 1, Fig. 2). Technological laser 1 (or two technological lasers) and the adjacent control system 2 are located directly in front of the technological station. The technological post includes a vertically located frame 3 with a sheet 4 also fixed for processing. On both sides of the sheet on the frame are two-coordinate moving systems 5, 6, on each of which optical-focusing heads 7 and 8 are placed.

 The above installation works as follows.

 The radiation from technological lasers 1 is fed to the optical focusing heads 7 and 8. These technological lasers can have the same parameters (power, radiation quality), and completely different. For example, one laser can operate in continuous mode, and the other in pulse-periodic mode.

These lasers may even have different generation wavelengths (CO ₂ laser). For example, one laser is 10.6 μm and the other is 1.06 μm (Grenade laser with neodymium). In this case, the processes of laser cutting and laser marking or laser milling can be combined. If one technological laser is used, then the radiation transportation system divides the beam (for example, using translucent mirrors) into two parts, followed by the direction of both parts of the beam to the corresponding optical focusing heads. It is possible to divide the beam into two parts, not in space, but in time using a rotating mirror. In this case, the initial laser beam is divided into two beams of repetitively pulsed radiation.

 The two-coordinate moving systems 5 and 6 move the optical focusing heads over the working space, thereby making a figured cutting of the sheet 4 intended for processing sheet 4 fixed in the frame 3. The control system 2 controls all movements of the working bodies of the installation, as well as the operation of the lasers. After cutting all the parts, operation for the disposal of waste and finished parts. Next, a loading crane (not shown in the figure) loads a new sheet into frame 3 and the processing cycle is repeated.

 The movements of both two-coordinate systems with the optical focusing heads fixed on them are interdependent, since they are on opposite sides of the processed sheet and do not interfere with each other's movement.

 Processing of one sheet due to the presence of two optical focusing heads is performed in a shorter time than the prototype. This increases the productivity of the installation.

 The work of the proposed installation is most effective when cutting parts having a large diameter (Fig. 3), since processing can be carried out in parallel with two heads - arrows a and b, as well as when cutting a wide range of technical gaskets (Fig. 4), where the main the contour in cuts out one optically focusing head, and the holes for mounting another.

 List of references.

 1. Application of France N 2415513, CL B 23 K 26/00.

 2. Urs W Hunziker. Erfahrungen mit "Fliegender Optik" beim Laserschneiden / Schweis technik, 1987, N 4, s. 62-65.

 3. Patent RU N 2095431 "Installation for laser processing of sheet materials", Zabelin AM, Safonov A.N., C 21 D 1/09, B 23 K 26/00.

Claims (3)

 1. Installation for laser processing of sheet materials, including a technological laser, a control system, a frame for fixing on it designed for sheet processing and located on it an optical focusing head and a two-coordinate system for moving it, characterized in that it is equipped with a second two-coordinate moving system with mounted on it by an optical focusing head mounted on a frame opposite to the first two-coordinate system with an optical focusing head, the installation being carried out with the ability to supply laser radiation to each optical focusing head.  2. The installation according to claim 1, characterized in that it is equipped with a beam splitting system to enable the beam to be transmitted to both optical focusing heads from a process laser.  3. The installation according to claim 1, characterized in that it is equipped with a second separate process laser for supplying radiation to the second optical focusing head.

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