Active and passive flexible follow-up support device for aero-engine blades
A technology for aero-engines and support devices, which is applied in wind power generation, mechanical equipment, vibration suppression and adjustment, etc., can solve the problems of inability to control the size of the fixed support force in the center, surface damage, etc., and achieve weakening negative effects, increasing the support area, and high Effects of Accuracy and Stability
Active Publication Date: 2022-08-09
EAST CHINA UNIV OF SCI & TECH +1
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Problems solved by technology
However, on the one hand, this invention cannot control the size of the central fixed support force, and for complex curved surfaces with large curvature changes, the force exerted by the surrounding auxiliary universal balls on the surface is different. , will cause damage to the surface
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[0040] Below in conjunction with the accompanying drawings, preferred embodiments of the present invention are given and described in detail.
[0041] like Figure 1-3 As shown, the present invention provides an active and passive flexible follow-up support device for aero-engine blades, which is mainly used to support structures with complex curved surfaces (such as aero-engine blades) during ultrasonic rolling strengthening, including: at least three supports The ball 1, the ball bracket 2, the universal joint 3, the elastic member 51 and the base 4, wherein the upper end of the base 4 has a stepped through hole, the lower end of the universal joint 3 is located in the stepped through hole, and the elastic member 51 is also It is located in the stepped through hole, and one end of the elastic member 51 is connected to the lower end of the universal joint 3, and the other end is connected to the lower end of the base 4. In this way, the universal joint 3 and the elastic membe...
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The invention relates to an active and passive flexible follow-up support device for an aero-engine blade, comprising: support balls, ball brackets, universal joints, bases and elastic parts, wherein the support balls are at least three, and are rotatably distributed on the on the ball bracket; the ball bracket is a concave structure, the bottom of which is connected with the upper end of the universal joint; the universal joint is supported on the base; the base is provided with a stepped through hole that penetrates up and down, and an elastic piece is arranged in the stepped through hole ; The elastic piece is located in the stepped through hole and is supported between the lower end of the universal joint and the lower end of the base. The flexible follow-up device of the invention adopts the method of combining multi-point contact, universal rotation and flexible support, and realizes the active and passive flexible follow-up support in the process of ultrasonic rolling and strengthening processing of aero-engine blades. While the blade is deformed, the flutter of the aero-engine blade is reduced, thereby improving the precision and stability of the ultrasonic rolling strengthening process of the aero-engine blade.
Description
technical field [0001] The invention relates to the field of material strengthening processing, and more particularly to an active and passive flexible follow-up support device for an aero-engine blade. Background technique [0002] In the study of surface strengthening of aero-engine blades, it was found that, on the one hand, a strengthening tool with high-amplitude and high-frequency ultrasonic vibration acting on aero-engine blades would cause flutter of the workpiece; The static pressure will cause a large deformation of the blade, which will seriously affect the surface modification effect of the ultrasonic rolling strengthening of aero-engine blades and the geometric accuracy of the strengthening process. Therefore, in order to reduce the negative impact of the aero-engine blade flutter deformation, it is necessary to equip the corresponding auxiliary support system and support strategy, and control the ultrasonic rolling strengthening tool and the auxiliary support s...
Claims
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IPC IPC(8): F16F15/08C21D10/00
CPCF16F15/085C21D10/00Y02E10/72
Inventor 刘爽李志强张显程韩晓宁姚树磊龚从扬朱林张开明
Owner EAST CHINA UNIV OF SCI & TECH