A Method for Automatic Grinding of Electron Beam Welding Seam of Weakly Rigid Case of Aeroengine

Abstract

The invention provides an aeroengine weak rigidity cartridge receiver electron beam welding seam automatic grinding method. A cartridge receiver welding seam grinding belt grinding machine is adopted, a cartridge receiver is arranged and fixed onto a special clamp arranged on a machine tool work rotary table through outer circle or inner hole positioning of the end surface and the installing edge of a cartridge receiver part, a grinding route is characterized in that the grinding head is along the tangent line direction of a welding seam curve, the grinding machine is started, a grinding belt grinding head is driven to operate so that a grinding belt arranged on a grinding belt grinding head contact wheel is tightly attached onto an annular welding seam of the cartridge receiver, a motor is driven to drive the cartridge receiver to operate, meanwhile, a dust suction device is started, and the continuous grinding on the cartridge receiver welding seam is realized. The cartridge receiver welding seam grinding belt grinding machine is adopted, the automatic grinding of combustion chamber cartridge receiver part electron beam welding seams is completed, and the problem of processing difficulty since an aeroengine weak rigidity cartridge receiver electron beam welding seam has a non-circle space curve surface and are distributed on the surface of a cartridge receiver substrate in a non-contour way is solved.

Description

technical field [0001] The invention belongs to the field of mechanical processing, and relates to an automatic grinding method for an electron beam welding seam of a weakly rigid casing of an aero-engine. Background technique [0002] The aero-engine casing works under high temperature and high load, bears static load and vibration load generated by gas force and inertial force, and is also subjected to thermal stress and thermal corrosion. It is the main load-bearing part of the engine. It is usually welded by several sections of thin-walled cylindrical or conical sheet metal of nickel-based superalloy material and machined ring parts by electron beam welding. After welding, the casing is deformed and the roundness is less than 2.5mm, causing Sewn into space curves and non-contoured distribution on the surface of the base body of the casing. High-quality grinding is required to meet the design requirements. Due to the high hardness of the nickel-based superalloy used in ...

AI Technical Summary

Problems solved by technology

The processing efficiency is low, and it takes 10 hours to manually repair a casing

Manual grinding is noisy and produces a lot of dust, which will harm the workers' bodies and pollute the environment at the same time

[0004] The traditional manual grinding method has a harsh working environment, serious dust pollution, low grinding efficiency, high labor intensity, and poor surface quality stability at the weld after grinding, which cannot meet the requirements of mass production of new engines.

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