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Method for milling and vibration-damping blisk

A technology of integral blisk and milling processing, which is applied in the direction of milling machine equipment, milling machine equipment details, metal processing machinery parts, etc. It can solve the problems of blade cross-sectional position degree, contour degree and distortion tolerance tolerance, small tool diameter, and tool gap. , to achieve the effect of increasing the milling feed rate, saving processing costs, and saving processing hours

Inactive Publication Date: 2011-11-23
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the processing process, when the blade profile and flow channel are finely milled, the maximum length and thickness ratio of the blade is 35:1, so the blade has a long cantilever beam structure. Due to the long overhang of the blade, the usual processing technology is adopted. The blade will vibrate under the action of cutting force, and there will be a serious "knife giving up" phenomenon. At the same time, due to the limitation of the width of the channel between the blades and the width of the blade, the diameter of the tool is small and the blade is long, and the blade will vibrate under the cutting force , the coupling flutter of the cutter and the blade will seriously affect the surface processing quality of the blade, causing scale defects to appear on the surface of the blade, resulting in the fact that the scale defects cannot be eliminated by repeated processing of the blade tip, resulting in the surface quality of the blade not meeting the design requirements. The shape and position tolerances such as position degree, profile degree and distortion of the blade section are out of tolerance

Method used

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  • Method for milling and vibration-damping blisk
  • Method for milling and vibration-damping blisk
  • Method for milling and vibration-damping blisk

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Embodiment

[0032] Embodiment: process a compressor integral blisk, the integral blisk is made up of disc 1 and blade 2, as figure 1 As shown, the material is titanium alloy.

[0033] Its processing steps are as follows:

[0034] 1. Filling materials are prepared according to a fixed ratio;

[0035] The mass ratio is: crystalline paraffin wax 65%, liquid wax 25%, rosin resin 9.9%, hindered phenolic antioxidant-2,6-tertiary butyl 4 methylphenol 0.1%;

[0036] 2. Melting filling material;

[0037] Fully mix the above filling materials in a metal container, heat on an electric furnace until the solid wax is completely melted, and then stir evenly to become a liquid filling agent.

[0038] 3. Install the pouring fixture;

[0039] Such as figure 2 As shown, the semi-closed annular casting fixture is placed on the overall compressor blisk from bottom to top, so that the metal support ring 5 is in contact with the edge plate 4 to ensure positioning and sealing, and the side steel plate 7 i...

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Abstract

The invention belongs to the technical field of machining and discloses a method for milling and vibration-damping a blisk. The method comprises the following specific process steps of: (1) preparing a filling material according to the proportion; (2) melting the filling material; (3) mounting a pouring clamp; (4) pouring a filling agent; (5) condensing the filling agent at normal temperature, secondarily condensing the filling agent and checking the condensing state of the filling agent; (6) mounting a filtering clamp; and (7) carrying out the abutted milling processing and chip removal processing. By pouring the filling agent between the blisk and vanes in the milling processing of vane profile five coordinates of the blisk, the method enhances the rigidity of parts in the milling processing of the vanes, eliminates the chatter marks generated at the vent tip part of the vanes during milling and reduces the roughness of the surfaces of the vanes. Meanwhile, the rigidities of the parts and a clamping system thereof are enhanced, so that the milling feed rate is increased and the milling speed can be improved.

Description

technical field [0001] The invention belongs to the technical field of mechanical processing, and in particular relates to a method for reducing vibration by milling an integral blisk. Background technique [0002] The overall blisk of the compressor is a key part of the aero-engine, which is made of superalloy or titanium alloy. In the processing process, when the blade profile and flow channel are finely milled, the maximum length and thickness ratio of the blade is 35:1, so the blade has a long cantilever beam structure. Due to the long overhang of the blade, the usual processing technology is adopted. The blade will vibrate under the action of cutting force, and there will be a serious "knife giving up" phenomenon. At the same time, due to the limitation of the width of the channel between the blades and the width of the blade, the diameter of the tool is small and the blade is long, and the blade will vibrate under the cutting force , the coupling flutter of the cutter...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23C3/00B23Q11/00
Inventor 胡晓群李家永岳召启卢成玉韩德印杨坚
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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