Aero-engine impeller blade trimming cutter

Abstract

The utility model belongs to the technical field of machining cutters, and particularly relates to an aero-engine impeller blade trimming cutter which comprises a cutter handle, a cutter holder and a trimming blade, and further comprises a positioning rod, a mounting groove is formed in the cutter holder, the trimming blade is embedded in the mounting groove, the positioning rod is fixed in the mounting groove, and the cutter holder is fixedly connected with the positioning rod. A positioning hole for the positioning rod to penetrate through is formed in the edge cutting blade; the two limiting plates are symmetrically distributed on the upper portion and the lower portion of the tool apron; a locking block; a threaded column; a butterfly nut; according to the edge cutting device, the installation position of the edge cutting blade is positioned through the positioning rod, meanwhile, the edge cutting blade is prevented from shaking in the radial direction relative to the positioning rod, locking can be achieved by inserting the locking block into the locking groove after the butterfly nut is screwed, and the edge cutting blade is clamped by the limiting plate; the locking block prevents the edge cutting blade from shaking relative to the axial direction of the positioning rod, and the edge cutting blade is convenient to disassemble and replace on the premise that the installation stability of the edge cutting blade is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of machining tools, and in particular relates to an aero-engine impeller blade trimming tool. Background Art

[0002] An aircraft engine is a highly complex and sophisticated thermal machine, and the impeller blades are the core component of an aircraft engine. The engine relies on the blades to compress and expand the gas and generate powerful power with the highest efficiency to propel the aircraft forward.

[0003] At present, because most aircraft engine impeller blades are castings, excess burrs will be generated after the blades are cast, so the blades need to be trimmed to remove the excess burrs.

[0004] In the prior art, a trimmer is usually used to remove burrs from blades, and the trimmer head is usually fixed to the handle with multiple bolts. Although this can meet general usage requirements, it requires tools to disassemble and assemble the trimmer head, which makes it inconvenient to disassemble and replace the trimmer head.

[0005] In order to solve the above problems, the present application proposes an aircraft engine impeller blade trimming tool. Utility Model Content

[0006] In order to solve the above problems existing in the prior art, the utility model provides an aircraft engine impeller blade trimming tool, which has the characteristics of being easy to use and easy to disassemble and assemble.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solution: an aircraft engine impeller blade trimming tool, comprising a tool handle, a tool seat and a trimming blade, wherein the tool seat is installed at the end of the tool handle, and further comprising:

[0008] A positioning rod, wherein the blade seat has a mounting groove for the trimming blade to be embedded in, the positioning rod is fixed in the mounting groove, and the trimming blade has a positioning hole for the positioning rod to pass through;

[0009] Limiting plates, two limiting plates are symmetrically distributed above and below the knife seat;

[0010] A locking block, the locking block is fixed to the limiting plate, and the trimming blade is provided with a locking groove for the locking block to be embedded in;

[0011] A threaded column, the threaded column is fixed on the tool holder and passes through the limiting plate;

[0012] A butterfly nut is installed on the protruding end of the threaded column by screwing.

[0013] As a preferred technical solution of the utility model, there are two symmetrically distributed positioning rods, and the diameter of the positioning rod is equal to the inner diameter of the positioning hole.

[0014] As a preferred technical solution of the present invention, the diameter of the locking block is equal to the inner diameter of the locking groove.

[0015] As a preferred technical solution of the utility model, it also includes:

[0016] Mounting ears with holes, two mounting ears with holes are symmetrically fixed to the ends of the handle;

[0017] A mounting block, the mounting block being fixed to an end of the knife seat;

[0018] A mounting shaft, wherein the mounting block is rotatably connected to the inner sides of the two mounting ears with holes by means of the mounting shaft;

[0019] An adjusting screw is fixed on the mounting ear with a hole by means of a threaded engagement.

[0020] As a preferred technical solution of the utility model, the mounting block is provided with a plurality of limit grooves which are evenly spaced along the circumferential direction, and the adjusting screws are embedded in the limit grooves.

[0021] As a preferred technical solution of the utility model, the thickness of the mounting block is equal to the distance between the two mounting ears with holes.

[0022] As a preferred technical solution of the utility model, the outer wall of the trimming blade is tightly against the inner wall of the mounting groove.

[0023] Compared with the prior art, the beneficial effects of the utility model are:

[0024] In the utility model, the positioning rod is used to position the installation position of the trimming blade, and at the same time, the trimming blade is prevented from shaking radially relative to the positioning rod. After tightening the butterfly nut, the locking block is inserted into the locking groove to achieve locking. The limit plate clamps the trimming blade, and the locking block prevents the trimming blade from shaking axially relative to the positioning rod. Under the premise of ensuring the installation stability of the trimming blade, it is also convenient to disassemble and replace the trimming blade.

[0025] Other additional advantages and beneficial effects of the present application will be given in part in the following description, and in part will become apparent from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0027] Figure 1 It is a structural schematic diagram of the utility model;

[0028] Figure 2 For this utility model Figure 1 A is an enlarged structural diagram;

[0029] Figure 3 For this utility model Figure 1 The enlarged structural diagram at B in FIG.

[0030] Figure 4 It is a schematic diagram of the axonometric structure of the tool holder in the utility model.

[0031] In the figure: 1. tool handle; 11. mounting ear with hole; 2. tool holder; 21. mounting slot; 22. mounting block; 221. limiting slot; 3. trimming blade; 31. locking slot; 32. positioning hole; 4. limiting plate; 41. locking block; 5. threaded column; 6. butterfly nut; 7. positioning rod; 8. mounting shaft; 9. adjusting screw. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] See also Figure 1-Figure 4 The utility model provides the following technical solutions: an aircraft engine impeller blade trimming tool, comprising a tool handle 1, a tool seat 2 and a trimming blade 3, the tool seat 2 is installed at the end of the tool handle 1, and also includes: a positioning rod 7, a limit plate 4, a locking block 41, a threaded column 5 and a butterfly nut 6.

[0034] Further, by Figure 1 and Figure 2As shown, in this embodiment, the knife seat 2 is provided with a mounting groove 21 for the trimming blade 3 to be embedded, the positioning rod 7 is fixed in the mounting groove 21, and the trimming blade 3 is provided with a positioning hole 32 for the positioning rod 7 to pass through, two limit plates 4 are symmetrically distributed above and below the knife seat 2, a locking block 41 is fixed on the limit plate 4, and the trimming blade 3 is provided with a locking groove 31 for the locking block 41 to be embedded, the threaded column 5 is fixed on the knife seat 2 and passes through the limit plate 4, and the butterfly nut 6 is installed on the protruding end of the threaded column 5 by threaded engagement. After adopting the above scheme, when using, when installing the trimming blade 3, first rotate the limit plate 4 so that the limit plate 4 is at a position deviated from the mounting groove 21, and then the trimming blade 3 is placed in the mounting groove. The edge trimming blade 3 is installed in the groove 21, and the positioning rod 7 passes through the positioning hole 32 to position the edge trimming blade 3. Then, the limit plate 4 is rotated to make the locking block 41 face the locking groove 31. Finally, the butterfly nut 6 is tightened to make the locking block 41 inserted into the locking groove 31 to achieve locking. The utility model uses the positioning rod 7 to position the installation position of the edge trimming blade 3, and at the same time prevents the edge trimming blade 3 from radially shaking relative to the positioning rod 7. After tightening the butterfly nut 6, the locking block 41 is inserted into the locking groove 31 to achieve locking. The limit plate 4 clamps the edge trimming blade 3, and the locking block 41 prevents the edge trimming blade 3 from axially shaking relative to the positioning rod 7. On the premise of ensuring the installation stability of the edge trimming blade 3, it is also convenient to disassemble and replace the edge trimming blade 3.

[0035] Preferably, by Figure 1 and Figure 2 As shown, in this embodiment, there are two symmetrically distributed positioning rods 7, and the diameter of the positioning rod 7 is equal to the inner diameter of the positioning hole 32. Therefore, after the positioning rod 7 passes through the positioning hole 32, the outer wall of the positioning rod 7 abuts against the inner wall of the positioning hole 32, and the stability is high.

[0036] Preferably, by Figure 1 and Figure 2 As shown, in this embodiment, the diameter of the locking block 41 is equal to the inner diameter of the locking groove 31. Therefore, after the locking block 41 is embedded in the locking groove 31, the outer wall of the locking block 41 abuts against the inner wall of the locking groove 31, and the stability is high.

[0037] Preferably, by Figure 1 and Figure 3As shown, in this embodiment, it also includes: a mounting ear 11 with a hole, a mounting block 22, a mounting shaft 8 and an adjusting screw 9. The two mounting ears 11 with a hole are symmetrically fixed to the end of the tool handle 1, and the mounting block 22 is fixed to the end of the tool holder 2. The mounting block 22 is rotatably connected to the inner sides of the two mounting ears 11 with a hole by means of the mounting shaft 8. The adjusting screw 9 is fixed to the mounting ears 11 with a hole by means of a threaded engagement. After adopting the above scheme, when necessary, the adjusting screw 9 can be loosened, and the angle of the trimming blade 3 can be adjusted by rotating the tool holder 2. The tool holder 2 rotates around the mounting shaft 8 to meet different usage needs. After the adjustment is completed, the adjusting screw 9 is tightened.

[0038] Preferably, by Figure 1 , Figure 3 and Figure 4 As shown, in this embodiment, a plurality of limit grooves 221 are provided on the mounting block 22 and are evenly spaced along the circumferential direction, and the adjusting screw 9 is embedded in the limit groove 221. After adopting the above scheme, after tightening the adjusting screw 9, the adjusting screw 9 is embedded in the limit groove 221 to prevent the tool holder 2 from rotating accidentally.

[0039] Preferably, by Figure 1 and Figure 3 As shown, in this embodiment, the thickness of the mounting block 22 is equal to the distance between the two mounting ears 11 with holes, which ensures the stability of the connection between the handle 1 and the seat 2 and avoids relative shaking.

[0040] Preferably, by Figure 1 and Figure 2 As shown, in this embodiment, the outer wall of the trimming blade 3 is tightly against the inner wall of the mounting groove 21, which further improves the installation stability of the trimming blade 3 and prevents the trimming blade 3 from shaking and affecting the trimming accuracy.

[0041] Components not described in detail herein are prior art.

[0042] Working principle and use process of the utility model: when the trimming tool of the utility model is used, when installing the trimming blade 3, the limiting plate 4 is first rotated to make the limiting plate 4 at a position deviating from the installation groove 21, and then the trimming blade 3 is placed in the installation groove 21, and the positioning rod 7 is made to pass through the positioning hole 32 to position the trimming blade 3, and then the limiting plate 4 is rotated to make the locking block 41 face the locking groove 31, and finally the butterfly nut 6 is tightened to make the locking block 41 inserted into the locking groove 31 to achieve locking;

[0043] The utility model uses the positioning rod 7 to locate the installation position of the trimming blade 3, and at the same time prevents the trimming blade 3 from shaking in the radial direction relative to the positioning rod 7. After tightening the butterfly nut 6, the locking block 41 is inserted into the locking groove 31 to achieve locking. The limiting plate 4 clamps the trimming blade 3, and the locking block 41 prevents the trimming blade 3 from shaking in the axial direction relative to the positioning rod 7. Under the premise of ensuring the installation stability of the trimming blade 3, it is also convenient to disassemble and replace the trimming blade 3;

[0044] When necessary, the adjusting screw 9 can be loosened and the angle of the trimming blade 3 can be adjusted by rotating the knife seat 2. The knife seat 2 rotates around the mounting shaft 8 to meet different usage needs. After the adjustment is completed, tighten the adjusting screw 9.

[0045] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An aircraft engine impeller blade trimming tool, comprising a tool holder (1), a tool seat (2) and a trimming blade (3), wherein the tool seat (2) is mounted on the end of the tool holder (1), and is characterized in that: Also includes: A positioning rod (7), having a mounting groove (21) on the blade seat (2) for the trimming blade (3) to be embedded, the positioning rod (7) being fixed in the mounting groove (21), and having a positioning hole (32) on the trimming blade (3) for the positioning rod (7) to pass through; Limiting plates (4), wherein two limiting plates (4) are symmetrically distributed above and below the knife seat (2); A locking block (41), wherein the locking block (41) is fixed on the limiting plate (4), and the trimming blade (3) is provided with a locking groove (31) for the locking block (41) to be embedded; A threaded column (5), wherein the threaded column (5) is fixed on the knife seat (2) and passes through the limiting plate (4); A butterfly nut (6) is installed on the protruding end of the threaded column (5) by means of threaded engagement.

2. The aircraft engine impeller blade trimming tool according to claim 1, characterized in that: There are two symmetrically distributed positioning rods (7), and the diameter of the positioning rods (7) is equal to the inner diameter of the positioning hole (32).

3. The aircraft engine impeller blade trimming tool according to claim 1, characterized in that: The diameter of the locking block (41) is equal to the inner diameter of the locking groove (31).

4. The aircraft engine impeller blade trimming tool according to claim 1, characterized in that: Also includes: A mounting ear (11) with a hole, wherein two mounting ears (11) with a hole are symmetrically fixed to the end of the knife handle (1); A mounting block (22), wherein the mounting block (22) is fixed to an end portion of the knife seat (2); A mounting shaft (8), wherein the mounting block (22) is rotatably connected to the inner sides of the two mounting ears (11) with holes by means of the mounting shaft (8); An adjusting screw (9), wherein the adjusting screw (9) is fixed on the mounting ear (11) with a hole by means of a threaded engagement.

5. The aircraft engine impeller blade trimming tool according to claim 4, characterized in that: The mounting block (22) is provided with a plurality of limiting grooves (221) distributed at equal intervals along the circumferential direction, and the adjusting screws (9) are embedded in the limiting grooves (221).

6. The aircraft engine impeller blade trimming tool according to claim 4, characterized in that: The thickness of the mounting block (22) is equal to the distance between the two mounting ears (11) with holes.

7. The aircraft engine impeller blade trimming tool according to claim 1, characterized in that: The outer wall of the trimming blade (3) is tightly against the inner wall of the mounting groove (21).

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