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Flexible clamp used for aviation blade

A technology of flexible clamps and blades, applied in the direction of clamping, manufacturing tools, supports, etc., can solve the problems of complex and unsuitable clamping of small aviation blades and the weakening of suction cups.

Inactive Publication Date: 2016-09-28
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, to achieve effective clamping of blades on a three-axis CNC machine tool, flexible clamps with telescopic rod suction cups have obvious shortcomings: first, such clamps are generally too large in size and are not suitable for clamping small aviation blades; This kind of clamping method is more suitable for the situation of clamping and processing on one side, but for the special processing and repairing situation of aviation blades that need to be clamped and processed on both sides, the role of the suction cup is greatly weakened; moreover, due to the component module of the fixture design Many, need to be equipped with hydraulic control system, vacuum pump power source and computer control system, etc., which is extremely complicated
However, the phase change material flexible fixture technology is not yet mature, and the control technology is difficult, and there are still many technical problems to be solved.

Method used

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  • Flexible clamp used for aviation blade
  • Flexible clamp used for aviation blade
  • Flexible clamp used for aviation blade

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] See attached Figure 4 , the flexible fixture of the present embodiment includes four mechanisms, which are blade body supporting mechanism 7, tenon clamping mechanism 8, rotary height adjustment mechanism 9 and angle tilting mechanism 10. By adjusting the working angle of angle tilting mechanism 10, the flexible fixture can Adjust the inclination angle of the blade to adapt to the processing of variable angle inclination, and realize the repair of aviation blades with three-axis CNC machine tools.

[0037] The blade body supporting mechanism 7, the tenon clamping mechanism 8, the rotary height adjustment mechanism 9 and the angle tilting mechanism 10 are described respectively below:

[0038] Refer to attached Figure 5 , the fixture structure of the 7 parts of the airfoil support mechanism, the ejector rod 7.3 cooperates with the densely distributed threaded holes 7.2 on the side plate 7.1 through self-locking threads (the helix angle is less than 4°), and then adjus...

Embodiment 2

[0046] The flexible fixture of this embodiment also has a blade body support mechanism 7, a tenon clamping mechanism 8, a rotary height adjustment mechanism 9, and an angle tilt mechanism 10. By adjusting the working angle of the angle tilt mechanism 10, the flexible fixture can adjust the inclination angle of the blade. In order to adapt to the processing of variable angle and inclination, it is realized to cooperate with the three-axis CNC machine tool to process and repair aviation blades. Although the fixture described in Embodiment 1 can fully meet the processing requirements of the previous "tilting method" three-axis machine tool for machining aviation blades, since the blade basin and the blade back are processed separately during processing, although the angle of inclination of the base can be the same, But the direction of inclination must be opposite, as attached Figure 10 shown. These are two processing processes, in which the same processing origin on the blade ...

Embodiment 3

[0051] The flexible fixture of this embodiment also has a blade body support mechanism 7, a tenon clamping mechanism 8, a rotary height adjustment mechanism 9, and an angle tilt mechanism 10. By adjusting the working angle of the angle tilt mechanism 10, the flexible fixture can adjust the inclination angle of the blade. In order to adapt to the processing of variable angle and inclination, it is realized to cooperate with the three-axis CNC machine tool to process and repair aviation blades.

[0052] Refer again to the attached Figure 5 and 6 , in order to realize the flexible support of the airfoil 1, the airfoil support mechanism 1 specifically includes a side plate 7.1, threaded holes 7.2 uniformly and densely distributed on the side plate, a push rod 7.3 with self-locking threads, and one end of the push rod 7.3 The top bead 7.4 and the top rod 7.3 are inserted into the threaded hole 7.2 on the side plate 7.1, and the top rod 7.3 cooperates with the densely distributed ...

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Abstract

The invention provides a flexible clamp, which aims at overcoming the disadvantages of the existing clamps, which are too large to be suitable for clamping small aviation blades, complex in system, easy to cause deformation and errors, etc.; the flexible clamp of the present invention includes blade body support mechanism, The clamping mechanism, the rotary height adjustment mechanism and the angle tilting mechanism, by adjusting the working angle of the angle tilting mechanism, the flexible clamp can adjust the tilt angle of the blade. The flexible clamp of the present invention can clamp and support the blade body to a certain extent, prevent the blade body from being deformed during processing and cause errors, is universal, flexible and adjustable, and is suitable for different blades with large differences in blade body and different curved surface shapes.

Description

[0001] The invention relates to a flexible fixture, in particular to a flexible fixture for aviation blades, especially a flexible fixture that can make the aviation blades tilt at a variable angle, so that the three-axis numerical control machine tool can process the aviation blades. Background technique [0002] Overall, the structure of an aviation blade is mainly divided into blade body 1, blade root platform 2 and tenon part 3, as shown in the attached figure 1 shown. The airfoil 1 is the part with the largest area of ​​the entire blade, and also the part with the largest amount of cutting and processing, and it is also a thin-walled part. [0003] At present, there are many types of fixtures that can support different curved surfaces. Two types of fixtures with reference value are introduced below: [0004] (1) Telescopic rod suction cup type. as attached figure 2 As shown, for the situation where only one side of the curved surface is clamped and the other side is u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q3/06B23Q3/04B23Q7/00
CPCB23Q3/062B23Q3/04B23Q7/00
Inventor 高健汤泽航张揽宇陈云贺云波
Owner GUANGDONG UNIV OF TECH
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