Rectifier fan-shaped gauge adaptive to outer ring casing

Abstract

The rectifier fan-shaped gauge comprises a first gauge block, a second gauge block and a third gauge block, the first gauge block, the second gauge block and the third gauge block are all in an arc shape, the arc sections of the first gauge block and the third gauge block are matched with the outer arc of an upper edge plate of a rectifier blade in size, and the working arc section of the second gauge block is matched with the inner arc of the upper edge plate in size. The three gauge blocks are sequentially placed from left to right and connected and fixed through pins and screws, the first gauge block and the second gauge block are assembled to form an inner arc-shaped groove, the second gauge block and the third gauge block are assembled to form an outer arc-shaped groove, lightening holes are evenly distributed in the gauge blocks, and the gauge blocks are made of 1Cr13. If the upper edge plate of the blade cannot pass through smoothly, the blade can be repaired, resource waste caused by clamping stagnation repair is avoided, the engine assembly time is shortened, meanwhile, the arc size of the gauge is consistent with the outer ring casing and is longer than the length of the blade, the arc deformation condition of the blade can be detected, and the use frequency is improved through the wear-resistant material.

Description

Technical Field

[0001] The invention relates to the field of mechanical manufacturing, in particular to a blade inspection device. Background Art

[0002] The rectifier blades of the high-pressure compressor are important components of the aviation turbine engine. The rectifier blades are double-mounting plate structures. The upper mounting plate is assembled with the outer ring casing. The material is TC11. Due to the particularity of the material, it is easy to cause brittle deformation of the parts after machining, resulting in jamming when assembled with the outer ring casing. This time, a rectifier fan-shaped gauge adapted to the outer ring casing was designed. The matching dimensions of the gauge strictly follow the assembly dimensions of the outer ring casing, and the rectifier blades are inspected and repaired after machining to ensure that the rectifier blades can be smoothly installed in the outer ring of the engine. Summary of the invention

[0003] In order to solve the above problems, the present invention discloses a rectifier sector gauge adapted to an outer ring casing.

[0004] The specific technical solutions are as follows:

[0005] A rectifier sector gauge adapted for an outer ring casing, comprising a first gauge block, which is in an arc shape as a whole, and whose arc segment matches the outer arc size of an upper edge plate of a finisher blade; a second gauge block, which is in an arc shape as a whole, and whose working arc segment matches the inner arc size of an upper edge plate of a finisher blade; and a third gauge block, which is in an arc shape as a whole, and whose arc segment matches the outer arc size of an upper edge plate of a finisher blade.

[0006] The first gauge block, the second gauge block and the third gauge block are placed in sequence from left to right, and the first gauge block, the second gauge block and the third gauge block are connected and fixed together by pins and screws.

[0007] After the first gauge block and the second gauge block are assembled together, the end face of the first gauge block and the working arc segment of the second gauge block form an inner arc groove of the inner arc segment of the finisher blade. After the second gauge block and the third gauge block are assembled together, the end face of the third gauge block and the working arc segment of the second gauge block form an outer arc groove of the outer arc segment of the finisher blade.

[0008] The first gauge block, the second gauge block and the third gauge block are evenly provided with weight-reducing holes.

[0009] The material of the first gauge block, the second gauge block and the third gauge block are all 1Cr13.

[0010] The advantages of the present invention are as follows: before the rectifier blades of the high-pressure compressor are assembled with the outer ring casing, the rectifier blades are inspected, and when it is found that the upper edge plate of the blade cannot smoothly pass through the fan-shaped gauge, the blade is repaired, and finally the rectifier blades can be smoothly installed in the outer ring casing, thereby avoiding the waste of manpower, material resources and financial resources caused by repairing the rectifier blades due to sticking, and shortening the engine assembly time. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic diagram of the structure of the finisher blade;

[0012] Figure 2 for Figure 1 AA section view;

[0013] Figure 3 It is a structural schematic diagram of the present invention;

[0014] Figure 4 for Figure 3 AA section view. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] A rectifier sector gauge adapted for an outer ring casing, comprising a first gauge block, the first gauge block being in an arc shape as a whole, and the arc segment of the first gauge block matching the outer arc size of the upper edge plate 2a of a finisher blade 2; a second and third gauge block being in an arc shape as a whole, and the working arc segment 3a of the second gauge block matching the inner arc size of the upper edge plate 2a of the finisher blade; and a third gauge block 4 being in an arc shape as a whole, and the arc segment of the third gauge block matching the outer arc size of the upper edge plate 2a of the finisher blade.

[0017] The first gauge block, the second gauge block, the third gauge block, and the third gauge block 4 are placed in sequence from left to right, and the first gauge block, the second gauge block, the third gauge block, and the third gauge block 4 are connected and fixed together by pins and screws.

[0018] After the first gauge block is assembled with the second and third gauge blocks, the end face of the first gauge block and the working arc segment 3a of the second gauge block constitute the inner arc groove 5 of the inner arc segment of the finisher blade; after the second gauge block and the third gauge block are assembled together, the end face of the third gauge block and the working arc segment of the second gauge block constitute the outer arc groove 6 of the outer arc segment of the finisher blade.

[0019] The first gauge block, the second gauge block, the third gauge block and the third gauge block 4 are evenly provided with weight-reducing holes 7 .

[0020] The materials of the first gauge block, the second third gauge block and the third gauge block 4 are all 1Cr13

[0021] The technical solution of the present invention is:

[0022] Technical point 1: Design and manufacture of the “first gauge block” of the sector gauge.

[0023] The "first gauge block" is an arc segment structure. The key points are the size of the arc and the size of the end face. The arc size is strictly designed in accordance with the outer arc size of the upper edge plate of the rectifier blade, forming an arc closed loop with the second gauge block; the end face size must be longer than the circumferential boss size of the rectifier blade. In order to reduce the sliding wear between the rectifier blade and the gauge, the more wear-resistant material 1Cr13 is selected for manufacturing.

[0024] Technical point 2: Design and manufacture of the “second gauge block” of the fan-shaped gauge.

[0025] The "second gauge block" is an arc segment structure. The key point is the size design of the arc. The arc size is strictly designed in accordance with the size of the inner arc of the upper edge plate of the rectifier blade. The arcs of the two segments are guaranteed after combination, and form a closed loop in the arc direction with the first and third gauge blocks to imitate the outer ring casing to detect the processing size of the arc of the upper edge plate of the rectifier blade. In order to reduce the sliding wear between the rectifier blade and the gauge, the more wear-resistant material 1Cr13 is selected for manufacturing.

[0026] Technical point three: Design and manufacture of the “third gauge block” of the fan-shaped gauge.

[0027] The "third gauge block" is an arc segment structure. The key points are the size of the arc and the size of the end face. The arc size is strictly designed in accordance with the outer arc size of the upper edge plate of the rectifier blade, forming an arc closed loop with the second gauge block; the end face size must be longer than the circumferential boss size of the rectifier blade. In order to reduce the sliding wear between the rectifier blade and the gauge, the more wear-resistant material 1Cr13 is selected for manufacturing.

[0028] In summary, the present invention is used for rectifier blades made of TC11 material, and before being assembled with the outer ring casing, the deformation caused by mechanical processing stress is trimmed. The fan-shaped gauge is an arc segment structure, the arc size is consistent with the outer ring casing, and the arc segment is much longer than the blade length, so that the deformation of the entire rectifier blade arc can be checked, and the material is selected from a more wear-resistant steel alloy, and such a design improves the frequency of use of the gauge. The specific method of use is that the protrusions on both sides of the upper edge plate of the rectifier blade are inserted into the outer arc groove and the inner arc groove of the fan-shaped gauge, and the upper edge plate of the trimmer blade abuts against the working arc segment of the second gauge block and starts to slide. When it cannot pass through the fan-shaped gauge smoothly, the blade is repaired, and finally the rectifier blade can be smoothly installed through the fan-shaped gauge, thereby ensuring that the assembly of the outer ring casing can be completed at one time when the blade is assembled, avoiding the waste of manpower, material resources, and financial resources caused by the jamming and repairing of the rectifier blade, and at least shortening the time of the blade assembly in the engine.

Claims

1. A rectifier sector gauge adapted to an outer ring casing, characterized in that: A first gauge block is provided, which is in an arc shape as a whole, and the arc segment of the first gauge block matches the outer arc size of the upper edge plate of the finisher blade; a second gauge block is provided, which is in an arc shape as a whole, and the working arc segment of the second gauge block matches the inner arc size of the upper edge plate of the finisher blade; a third gauge block is provided, which is in an arc shape as a whole, and the arc segment of the third gauge block matches the outer arc size of the upper edge plate of the finisher blade.

2. The rectifier sector gauge adapted to the outer ring casing according to claim 1 is characterized in that: The first gauge block, the second gauge block and the third gauge block are placed in sequence from left to right, and the first gauge block, the second gauge block and the third gauge block are connected and fixed together by pins and screws.

3. The rectifier sector gauge adapted to the outer ring casing according to claim 2, characterized in that: After the first gauge block and the second gauge block are assembled together, the end face of the first gauge block and the working arc segment of the second gauge block form an inner arc groove of the inner arc segment of the finisher blade. After the second gauge block and the third gauge block are assembled together, the end face of the third gauge block and the working arc segment of the second gauge block form an outer arc groove of the outer arc segment of the finisher blade.

4. The rectifier sector gauge adapted to the outer ring casing according to claim 3, characterized in that: The first gauge block, the second gauge block and the third gauge block are evenly provided with weight-reducing holes.

5. The rectifier sector gauge adapted to the outer ring casing according to claim 3, characterized in that: The material of the first gauge block, the second gauge block and the third gauge block are all 1Cr13.

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