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Assembling precision control method of single-body blades in blisk of electron beam welding structure

An electron beam welding and integral blisk technology, applied in the field of machining, can solve the problems of high precision requirements, difficult processing, complex structure, etc., and achieve the effects of controlling post-weld precision, reducing development cycle, and improving assembly precision

Inactive Publication Date: 2012-12-26
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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Problems solved by technology

The integral blisk of welded structure is a new type of blisk structure, with complex structure, high precision requirements, strong comprehensive technology, and difficult processing.

Method used

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  • Assembling precision control method of single-body blades in blisk of electron beam welding structure
  • Assembling precision control method of single-body blades in blisk of electron beam welding structure
  • Assembling precision control method of single-body blades in blisk of electron beam welding structure

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Embodiment Construction

[0028] The technical scheme that realizes the object of the present invention is described further below in conjunction with accompanying drawing of description:

[0029] (1) Processing single blades with welded structure: select precision forging blanks to process blade blanks, input the three-dimensional space data of precision forging blanks into the computer, establish a three-dimensional data model of blade blanks in the computer, and design a as attached figure 1 The protruding process round table 2 shown, and the center of the process round table 2 coincides with the blade stacking axis, and a reinforced connection square platform 3 is added between the process circle 2 and the tip of the blade, and the upper part of the connection square table 3 is designed as a round table shape , the lower part remains in blank state;

[0030] Forge the blade blank according to the above-mentioned design structure model, adopt five-coordinate milling and add the center, take the pla...

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Abstract

The invention belongs to the field of machining and particularly relates to an assembling precision control method of single-body blades in a blisk of an electron beam welding structure. The method disclosed by the invention comprises the following steps of: firstly, machining the single-body blades; designing convex technical circular platforms at blades tip parts of blade blanks; utilizing five coordinate milling centers to simultaneously mill welding surfaces and blade body modeled faces of the blades; dividing the single-body blades into seven groups to be clamped on a specific welding clamp, so as to finally control an assembling error to be within 0.05 mm; and after assembling, carrying out subsequent electron beam welding. According to the assembling precision control method disclosed by the invention, a reasonable blade forging blank structure design, integrated precise machining of blade references and welding surfaces, predication before welding of welding deformation of the blades, pre-compensation before welding, reasonable design of an assembling and welding clamp, and precise assembling of the blades on the clamp before welding, and the like are applied, so that the assembling precision of the blades before the welding is greatly improved, and the key technical difficulty that the gap between welding lines is ensured to be less than 0.1mm before electron beams are welded is broken through; and the after-welding precision of the blisk of the electron beam welding structure is controlled, an industrial blank is filled and the researching cost and the researching period are reduced at the same time.

Description

technical field [0001] The invention belongs to the field of mechanical processing, and in particular relates to a method for controlling the assembly accuracy of a single blade in an integral blisk of an electron beam welding structure. Background technique [0002] The processing method of the blisk is one of the core key technologies necessary for the development of advanced engines. From the perspective of the development of the blisk, the blisk of the welded structure has a significant advantage. Compared with the solid blank processing method, the blades and discs of electron beam welding can be processed by precision forging blanks with a small margin, which saves raw materials, ensures forging quality, high production efficiency, and low cost. Compared with the solid blank processing method more economics. The integral blisk of welded structure is a new type of blisk structure, with complex structure, high precision requirements, strong comprehensive technology,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00B23K37/04
Inventor 李冬梅刘艳岳召启杨楠张莹
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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