Fixture for abrasive flow polishing of blisk

An integral blisk, abrasive flow technology, applied in abrasives, manufacturing tools, used abrasive treatment devices, etc., to improve air tightness and prevent pollution

Inactive Publication Date: 2013-05-22
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The problem to be solved by the present invention is to design a special abrasive flow fixture for the integral blisk of the aero-engine, through which the abrasive flow can be correctly guided; the abrasive can be prevented from damaging the front and rear edge profiles of the blade during the polishing process; the integral blisk can be prevented fr

Method used

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  • Fixture for abrasive flow polishing of blisk
  • Fixture for abrasive flow polishing of blisk
  • Fixture for abrasive flow polishing of blisk

Examples

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Embodiment Construction

[0020] Describe the present invention below in conjunction with specific embodiment:

[0021] The overall blisk abrasive flow polishing jig in this embodiment consists of an upper disk casing 8, a lower disk casing 10, an outer hub sealing ring 14, an inner hub sealing ring 13, a blade leading edge gasket 11, and a blade trailing edge gasket 12. composition. The upper casing and the lower casing are made of high-speed steel materials that are resistant to stamping and not easily deformed; the outer hub seal ring, inner hub seal ring, blade leading edge gasket, and blade trailing edge gasket are made of anti-corrosion, tear-resistant and anti-corrosion Compression set properties of HNBR material.

[0022] The upper casing 8 is composed of two concentric rotators inside and outside. The section of the upper casing 8 is in an inverted "concave" shape. An upper gasket base is fixed between the two concentric rotators inside and outside the upper casing. The number of seats is eq...

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PUM

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Abstract

The invention provides a fixture for abrasive flow polishing of a blisk. The fixture consists of an upper disc tray, a lower disk tray, an outer wheel hub sealing ring, an inner wheel hub sealing ring, front blade edge sealing gaskets and rear blade edge sealing gaskets, wherein the upper disc tray and the lower disk tray consist of inner and outer concentric rotating bodies, sealing gasket bases are fixed in the disc trays and are in one-to-one correspondence with blades, and the front blade edge sealing gaskets and the rear blade edge sealing gaskets are fixed in the sealing gasket bases; and the outer wheel hub sealing ring and the inner wheel hub sealing ring fill gaps between the upper and lower disk trays and inner and outer wheel hubs of the blisk to be polished. According to the invention, the flow of abrasive materials is correctly guided, the abrasive materials are prevented from damaging the front and rear edge profiles of the blades during an abrasive polishing process, the blisk is prevented from deforming due to excessive stress caused by the factor that upper and lower cylinders pushes a piston at high pressure to extrude the abrasive materials during a blisk polishing process, the air impermeability of the fixture is improved, and work environment pollution caused by abrasive material leakage and possible physical injury accidents are prevented.

Description

technical field [0001] The invention relates to the technical field of polishing key parts of aero-engines, in particular to a jig for abrasive flow polishing of an integral blisk. Background technique [0002] In an aero-engine, the blisk as a key part is composed of inner and outer hubs and several blades. Most of the blade profiles are complex free-form surfaces, and the blade body has the characteristics of bending, wide, sweeping, twisting, and thin. With the development of the aviation industry, the number of blades in the blisks installed in aero-engines is increasing, and the working conditions are getting worse and worse. With the improvement of aerodynamic performance requirements, the blade space surface is becoming more and more complex. After milling, the surface of the blade must be polished to meet the increasing requirements for blade surface processing. [0003] At present, the traditional mechanical special processing equipment mainly used in domestic blad...

Claims

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Application Information

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IPC IPC(8): B24C9/00
Inventor 蔺小军吴广张军锋李志山辛红敏
Owner NORTHWESTERN POLYTECHNICAL UNIV
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