Aircraft engine exhaust funnel circular seam laser welding clamp and welding method

Abstract

The invention discloses an aircraft engine exhaust funnel circular seam laser welding clamp and a welding method. The welding clamp comprises a main shaft structure, an adjustable support, a positioning disc structure, a positioning disc driving mechanism and a gas protection device, one end of the main shaft structure is connected with a machine tool working rotary table, the main shaft structure is driven by a machine tool to rotate, and the other end of the main shaft structure is connected with the adjustable support; the positioning disc structure is axially sleeved on the main shaft structure and is radially connected with the main shaft structure through a sliding rail and a sliding block; the positioning disc driving mechanism is installed on the main shaft structure and drives the positioning discs of different diameters on the positioning disc structure to stretch out and draw back in the radial direction; and the gas protection device is installed on the positioning disc structure and connected with the main shaft structure, inert gas protection is provided for backs of different welding seams, and an aircraft engine exhaust funnel is sleeved and positioned on the positioning disc structure for welding. Welding of an annular welding seam is achieved through rotation of the clamp and a welded workpiece, and the formed welding seam is optimal in quality and has universality.

Description

Technical field [0001] The present application relates to laser welding technology in aircraft parts, particularly aircraft engine exhaust tube ring seam laser welding clamp and welding method. Background technique [0002] The aircraft cylindrical exhaust tube is usually soldered into a whole after several skin formation, in order to obtain high strength, continuous, smooth weld, laser welding gradually become the preferred choice for titanium alloy sheet welding, and welding of annular welds Is a difficult point. The aircraft engine exhaust tube titanium-alloy skin has a wall thickness, large size, rigidity, etc. A dedicated device is required to position the inner diameter of the aircraft engine exhaust tube to ensure the rigidity of the aircraft engine exhaust cartridge during the welding process and determine its welding position. Laser ring seam welding is extremely harsh than the coaxial degree between the docking accuracy and the cylindrical segment of the sheet, and the ...

AI Technical Summary

Problems solved by technology

Cylindrical structure circular seam welding is generally the last process. After welding, its entire shape is a closed structure. After welding, due to the influence of welding stress deformation and weld reinforcement, it is extremely difficult to install and disassemble the exhaust pipe of the aircraft engine on the tooling.

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