RU187501U1 - AUTOMATION FOR TWO-SIDED LASER-ARC WELDING OF T-BEAMS - Google Patents

Abstract

The utility model relates to the design of an automatic machine for double-sided laser-arc welding in a shielding gas medium of corner joints of steel structures that are elements of a T-beam, and can be used in shipbuilding, mechanical engineering and related industries.

The objective of this utility model is to develop an automatic machine for automatic high-performance double-sided hybrid laser-arc welding of T-beams. The technical result that provides the solution to this problem is to increase the welding productivity due to the high speed of the process, to improve the quality of welded joints by ensuring the overlap of the penetration zones of fillet welds, and to reduce the level of welding deformations due to simultaneous exposure to heat sources from both sides.

This result is achieved by creating an automatic machine for double-sided laser-arc welding, which contains a portal with carriages located on both sides, having a drive along the portal, which allows for the sequential or parallel movement of carriages along the portal, each of which has a two-coordinate support, with it has an optical laser head, an arc welding torch, a joint tracking sensor, a coil with a welding wire, which can be changed scheniya on the vertical axis and the axis perpendicular to the welding seam.

Description

The utility model relates to the design of an automatic machine for double-sided laser-arc welding in a shielding gas medium of corner joints of steel structures that are elements of a T-beam, and can be used in shipbuilding, bridge building and other related industries.

A known method of manufacturing a T-beam with a laser beam according to the patent of the Russian Federation No. 2653396, where during assembly the shelf is mounted on top of the wall, welding is performed by a slotted beam, having the laser head on the side of the shelf with remelting the shelf to the entire thickness, and a robotic laser welding complex consisting of from a laser source, welding head, shielding gas supply system, welding table and pressure devices. The installation allows the manufacture of T-beams, the strength of which is ensured by just one weld. Moreover, from the side of the shelf, due to the physics of the process of exposure to the surface of the laser beam, a groove is formed. To eliminate the stress concentrator and ensure the equal strength of the welded structure, it is necessary to fill the groove using arc welding, which significantly reduces productivity and requires additional costs for welding materials. The design of the installation allows laser welding of only one seam at a time.

Known robot installation according to Chinese patent CN 107350624 (A) for hybrid laser arc welding with a tracking system for a welding joint, containing a robot, a robot controller, a laser source, a laser head, a water-cooled welding torch for MIG welding, a welding source, an industrial computer and a laser scanner mounted on a welding torch. However, the design features of the installation do not allow welding simultaneously from two sides, which is associated with the presence of only one working tool placed on the robot arm.

A known installation for laser-arc welding of parts according to the patent of the Russian Federation No. 2615428, adopted as a prototype, containing a base with a kinematic system for moving the welding module installed on it, as well as equipment for installing and bringing into rotation the parts to be welded. The installation comprises a metal frame (portal) mounted on a support, on the upper part of which a carriage is mounted, which allows moving a beam fixed to it with a second carriage, on which a welding module consisting of an arc welding torch and a laser head is installed, a positioning and video surveillance module for the process welding, consisting of a video camera, an image output monitor and a joint tracking sensor. The installation is equipped with an arc power source and a ytterbium fiber laser with a cooling station.

The disadvantages of this installation is the inability to carry out laser-arc welding of T-beams simultaneously from two sides. Welding of fillet welds of a T-beam sequentially leads to the appearance of additional welding deformations, which reduces the quality of the finished product and increases its cost.

The feasibility of producing T-beams by simultaneous welding on both sides of the wall is due to the high quality requirements and strength characteristics imposed on these structures.

The objective of this utility model is to develop an automatic machine for automatic high-performance double-sided hybrid laser-arc welding of T-beams. The technical result that provides the solution to this problem is to increase the welding productivity due to the high speed of the process, to improve the quality of welded joints by ensuring the overlap of the penetration zones of fillet welds, and to reduce the level of welding deformations due to simultaneous exposure to heat sources from both sides.

This result is achieved by creating an automatic machine for double-sided hybrid laser-arc welding, which contains a portal with carriages located on both sides, having a drive along the portal, which allows for sequential or parallel movement of carriages along the portal, on each of which a two-coordinate support is installed, with an optical laser head located on it, an arc welding torch, a joint tracking sensor, a coil with a welding wire, having st movement along the vertical axis and the axis perpendicular to the welding seam.

The invention is illustrated by the figure (Fig. 1), which schematically shows an automatic machine for double-sided laser-arc welding of T-beams, consisting of a portal 1, carriages 2 and 3 with two-coordinate movement calipers 4 and 5, with devices installed on each caliper (shown in one of two modules): an optical laser head 6, an arc welding torch 7, a sensor for tracking the joint 8, a coil with welding wire 9, and an industrial computer with a monitor 10. The figure (Fig. 1) also shows the welding arc sources nicks 11, laser source 12 and cooling station 13 of the laser source.

The control system performs the function of automatically controlling the technological components of the machine, provides control over the technological parameters of the welding process and the position of the working tools (welding torch and laser head) relative to the welded joint and includes: an industrial computer with a monitor 10 and two sensors for tracking the joint 8. The industrial computer, according to the selected program, controls peripheral equipment: sets the power of the laser source 12 and VK yuchaet radiation include arc equipment 11, opens the gas valves and the working of the protective gas, controls guidance and tracking the welded seam, using data about the location of working tools relative to the web and flange tee received from the tracking sensors for the junction 8.

Claims (1)

An automatic machine for double-sided laser-arc welding of T-joints, containing a portal with a carriage located on it, with a drive for moving it, a two-coordinate support with an optical laser head, an arc welding torch, a sensor for tracking the joint and a coil with a welding wire is installed on the carriage, characterized in that it is equipped with a symmetrically mounted first second carriage having a displacement drive mounted on the portal, while the second carriage contains a two-coordinate support with mounted on optical laser head, arc welding torch, for the seam tracking sensor and the welding wire coil.

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