Clamping device for blade ring

Abstract

The utility model relates to a blade ring clamping device which comprises a supporting piece, the supporting piece comprises a base and a supporting plate extending in the direction away from the base, the supporting plate is provided with a boss used for abutting against a blade ring, and a containing space used for containing a protruding part of the blade ring is formed between the boss and the base. The boss is provided with at least one first positioning hole, the center line of the first positioning hole is collinear with the center line of a second positioning hole in the blade ring, and the edge, close to the boss, of the base is provided with a clamping groove used for being connected with the blade ring in a clamped mode. The first pressing plate is connected with the base and used for abutting against the first edge of the blade ring. The second pressing plate is connected with the supporting plate and used for abutting against the second edge of the blade ring. According to the clamping device for the blade ring, the situation that the removal amount is large in the finish machining process can be avoided, and part deformation is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of clamping devices, in particular to a clamping device for a leaf ring. Background Art

[0002] The blade ring is a critical component of a turbofan engine, located in the compressor's bearing ring and primarily responsible for transmission. During the initial machining of the blade ring, a clamping portion is reserved around the edge of the blade ring for easy securing during subsequent machining. During subsequent machining, the clamping portion is used to secure the blade ring. During final machining, the clamping portion must be removed. Due to the increased size of the clamping portion, a larger amount of material is removed during final machining, causing part deformation. Utility Model Content

[0003] Therefore, the technical problem to be solved by the present invention is to provide a clamping device for a blade ring, which can avoid excessive removal during fine machining and prevent deformation of parts.

[0004] In order to solve the above technical problems, the utility model provides a clamping device for a leaf ring, comprising: a support member, the support member comprising a base and a support plate extending away from the base, the support plate being provided with a boss for abutting against the leaf ring, and a receiving space for accommodating the protruding portion of the leaf ring is formed between the boss and the base, at least one first positioning hole is provided on the boss, the center line of the first positioning hole is used to be colinear with the center line of the second positioning hole on the leaf ring, and a clamping groove for clamping with the leaf ring is provided on the edge of the base close to the boss; a first pressure plate, the first pressure plate is connected to the base and is used to abut against the first edge of the leaf ring; a second pressure plate, the second pressure plate is connected to the support plate and is used to abut against the second edge of the leaf ring.

[0005] In one embodiment of the present invention, a first mounting hole is provided on the base, a first fastener is threadedly connected to the first mounting hole, and the first fastener is connected to the first pressing plate.

[0006] In one embodiment of the present invention, a third pressure plate is further included, and a second mounting hole is also provided on the base. The second mounting hole, the first mounting hole and the center of the base are located in a straight line. The second mounting hole is clamped with a first positioning column, and the first positioning column passes through the third pressure plate. The third pressure plate is used to resist the leaf ring.

[0007] In one embodiment of the present invention, a third mounting hole is provided on the support plate, a second fastener is threadedly connected to the third mounting hole, the second fastener is connected to the second pressure plate, and the boss is located between the third mounting hole and the base.

[0008] In one embodiment of the present invention, a second positioning column is clamped in the first positioning hole, and the second positioning column is used to pass through the second positioning hole on the leaf ring.

[0009] In one embodiment of the present invention, a fourth pressing plate is further included. The fourth pressing plate is used to abut against the leaf ring, and the second positioning column passes through the fourth pressing plate.

[0010] In one embodiment of the present invention, a fourth mounting hole is provided on the support plate, a third fastener is threadedly connected to the fourth mounting hole, the third fastener is connected to the fourth pressure plate, and the boss is located between the fourth mounting hole and the base.

[0011] In one embodiment of the present invention, the base is provided with a through hole, and the through hole is located between the first mounting hole and the second mounting hole.

[0012] In one embodiment of the present invention, the thickness of the end of the first pressure plate that abuts against the leaf ring gradually decreases toward the boss.

[0013] In one embodiment of the present invention, a plurality of first positioning holes are provided on the boss, and the diameters of the plurality of first positioning holes are different.

[0014] The above technical solution of the utility model has the following advantages compared with the prior art:

[0015] The utility model describes a clamping device for a leaf ring, which fixes the leaf ring radially by clamping the edge of the leaf ring with the card slot and the center lines of the first positioning hole and the second positioning hole being colinear, and enables the edge of the leaf ring to abut against the boss by the protruding portion of the leaf ring being located in the accommodating space, and fixes the leaf ring axially by clamping the first edge of the leaf ring by the first pressure plate and the second pressure plate by the second pressure plate, thereby completing the fixing of the leaf ring without the need for a leaf ring clamping portion, avoiding large removal amounts during fine machining, and preventing deformation of parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments of the present invention in conjunction with the accompanying drawings.

[0017] Figure 1 This is a structural schematic diagram of a blade ring clamping device of the utility model;

[0018] Figure 2 It is a structural diagram of the support member;

[0019] Figure 3 This is a schematic diagram of the assembly structure of the blade ring and the clamping device after flipping;

[0020] Figure 4 It is a schematic diagram of the structure of the leaf ring;

[0021] Figure 5 yes Figure 4 A partial enlarged view of point A in the middle.

[0022] Explanation of the reference numerals in the specification: 1. support member; 2. second pressure plate; 3. first pressure plate; 4. third pressure plate; 5. fourth pressure plate; 6. second positioning column; 7. leaf ring; 11. support plate; 12. third mounting hole; 13. base; 14. first mounting hole; 15. through hole; 16. second mounting hole; 17. boss; 18. first positioning hole; 19. fourth mounting hole; 21. second fastener; 31. first fastener; 41. first positioning column; 51. third fastener; 71. protrusion; 72. second positioning hole; 111. accommodating space; 131. slot. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the present invention.

[0024] Reference Figure 1 and Figure 2 As shown, the utility model is a clamping device for a leaf ring, comprising: a support member 1, the support member 1 comprising a base 13 and a support plate 11 extending away from the base 13, the support plate 11 being provided with a boss 17 for abutting against the leaf ring 7, a receiving space 111 for accommodating the protruding portion of the leaf ring 7 being formed between the boss 17 and the base 13, at least one first positioning hole 18 being provided on the boss 17, the center line of the first positioning hole 18 being collinear with the center line of the second positioning hole 72 on the leaf ring 7, the edge of the base 13 close to the boss 17 being provided with a clamping groove 131 for clamping with the leaf ring 7; a first pressure plate 3, the first pressure plate 3 being connected to the base 13 and being used to abut against the first edge of the leaf ring 7; a second pressure plate 2, the second pressure plate 2 being connected to the support plate 11 and being used to abut against the second edge of the leaf ring 7.

[0025] The present embodiment provides a clamping device for a leaf ring, which fixes the leaf ring 7 radially by clamping the edge of the leaf ring 7 with the clamping groove 131 and the center lines of the first positioning hole 18 and the second positioning hole 72 are colinear. The protruding portion of the leaf ring 7 is located in the accommodating space 111 so that the edge of the leaf ring 7 can be abutted against the boss 17. The first edge of the leaf ring 7 is clamped by the first pressure plate 3, and the second edge of the leaf ring 7 is clamped by the second pressure plate 2, so that the leaf ring 7 is fixed axially. In this way, the leaf ring 7 can be fixed without the clamping portion of the leaf ring 7, which can avoid large removal during fine processing and prevent deformation of parts.

[0026] Reference Figure 4 and Figure 5 As shown, the leaf ring 7 is annular as a whole. After the first processing, the edge of the leaf ring 7 has one and only one protrusion 71, and the protrusion 71 has a second positioning hole 72. The edge of one end of the leaf ring 7 has a protrusion. The leaf ring 7 includes a first edge and a second edge, wherein the first edge is the inner ring of the leaf ring 7 and the second edge is the outer ring of the leaf ring 7.

[0027] The support member 1 comprises a base 13 and a support plate 11 extending away from the sidewall of the base 13. A through-hole 15 is located in the center of the base 13 for interfacing with processing equipment, giving the base 13 an overall annular shape. The support plate 11 is spaced a certain distance from both the top and bottom planes of the base 13. A boss 17 is located on the top side of the support plate 11, designed to abut against the leaf ring 7. The boss 17 is positioned along the edge of the base 13, giving the boss 17 an overall annular shape. A space 111 is formed between the boss 17 and the base 13 to accommodate the protruding portion of the leaf ring 7. A slot 131 is located on the top edge of the base 13, near the boss 17, for engaging with the leaf ring 7. The slot 131 abuts against the bottom of the first edge of the leaf ring 7. Specifically, the diameter of the circle formed by the abutment between the slot 131 and the first edge corresponds to the inner diameter of the leaf ring 7. The centerline of the leaf ring 7 is collinear with the centerline of the base 13. The cross-section of the retaining groove 131 is right-angled, allowing the two sidewalls of the retaining groove 131 to abut against the bottom side of the leaf ring 7 and the inner ring sidewall of the leaf ring 7. The boss 17 is provided with at least one first positioning hole 18. The centerline of the first positioning hole 18 is designed to be collinear with the centerline of the second positioning hole 72 on the leaf ring 7. That is, the distance from the first positioning hole 18 to the centerline of the base 13 is the same as the distance from the second positioning hole 72 to the centerline of the leaf ring 7. The first positioning hole 18 is secured with a second positioning post 6, which can pass through the second positioning hole 72 on the leaf ring 7, thereby fixing the radial position of the leaf ring 7. Specifically, the positioning post can be considered a positioning pin or a bolt. The bolt is threadedly connected to the first positioning hole 18 and the second positioning hole 72 to connect the boss 17 to the protrusion 71. The provision of the first positioning hole 18 and the second positioning hole 72 enables the leaf ring 7 to be accurately positioned at the processing position. Preferably, the protrusion 71 of the leaf ring 7 may have multiple second positioning holes 72 with different diameters, and the boss 17 may have multiple first positioning holes 18 with different diameters corresponding to the second positioning holes 72. The multiple second positioning holes 72 correspond to the first positioning holes 18 so that the clamping device can be suitable for different leaf ring 7 processing steps. For example, during rough processing, the second positioning column 6 is used to make the center line of the first positioning hole 18 with a larger diameter collinear with the center line of the second positioning hole 72. During fine processing, the second positioning column 6 is used to make the center line of the first positioning hole 18 with a smaller diameter collinear with the center line of the second positioning hole 72.

[0028] A first mounting hole 14 is provided near the edge of the base 13. A first fastener 31 is threadedly connected to the first mounting hole 14. The first fastener 31 can be regarded as a bolt. The first fastener 31 is also threadedly connected to the first pressure plate 3, so that the first pressure plate 3 can be connected to the base 13 through the first fastener 31. The first pressure plate 3 is used to abut against the top of the first edge of the leaf ring 7. By rotating the first fastener 31, the leaf ring 7 can be pressed against the top of the first edge of the leaf ring 7, so that the inner ring of the leaf ring 7 is clamped between the first pressure plate 3 and the clamping groove 131. Preferably, the thickness of the end of the first pressure plate 3 that abuts against the leaf ring 7 gradually decreases toward the boss 17, that is, the end of the first pressure plate 3 close to the boss 17 has an inclined surface, so that the first pressure plate 3 can extend into the groove with a smaller height to clamp the leaf ring 7.

[0029] The base 13 is also provided with a second mounting hole 16. The second mounting hole 16 is symmetrically arranged with the first mounting hole 14, and the centers of the second mounting hole 16, the first mounting hole 14, and the base 13 are located on the same straight line. The second mounting hole 16 is clamped with a first positioning column 41, and the first positioning column 41 is also sleeved with a third pressure plate 4. The third pressure plate 4 is clamped with the first positioning column 41 through an interference fit. The third pressure plate 4 is used to abut against the first edge of the leaf ring 7. The structure of the third pressure plate 4 is the same as that of the first pressure plate 3 and will not be repeated. In another embodiment, the first positioning column 41 is threadedly connected to the first mounting hole 14 and the third pressure plate 4, so that the third pressure plate 4 can press the first edge of the leaf ring 7.

[0030] A third mounting hole 12 is provided on the support plate 11. The third mounting hole 12 is threadedly connected to a second fastener 21. The second fastener 21 can be regarded as a bolt. The second fastener 21 is also threadedly connected to a second pressure plate 2, so that the second pressure plate 2 is connected to the support plate 11 through the second fastener 21. The second pressure plate 2 can be abutted against the top of the second edge of the leaf ring 7. By rotating the second fastener 21, the second pressure plate 2 can press the top of the second edge of the leaf ring 7, so that the second edge of the leaf ring 7 is clamped between the boss 17 and the second pressure plate 2. The structure of the second pressure plate 2 is the same as that of the first pressure plate 3 and will not be repeated. The third mounting hole 12 is located near the outer edge of the support plate 11, so that the boss 17 is located between the third mounting hole 12 and the base 13.

[0031] The support plate 11 is also provided with a fourth mounting hole 19, and the fourth mounting hole 19 is threadedly connected to a third fastener 51. The third fastener 51 can be regarded as a bolt. The third fastener 51 is also threadedly connected to the fourth pressure plate 5, so that the fourth pressure plate 5 is connected to the support plate 11 through the third fastener 51. The fourth pressure plate 5 is abutted against the top of the second edge of the leaf ring 7, and the fourth pressure plate 5 can be pressed against the second edge of the leaf ring 7 by rotating the third fastener 51. The structure of the fourth pressure plate 5 is the same as that of the first pressure plate 3 and will not be repeated. The fourth mounting hole 19 is located near the outer edge of the support plate 11, so that the boss 17 is located between the fourth mounting hole 19 and the base 13. The second positioning column 6 passes through the fourth pressure plate 5, so that the clamping position of the fourth pressure plate 5 is fixed.

[0032] When in use, place the leaf ring 7 on the support 1 so that the bottom of the first edge of the leaf ring 7 abuts against the slot 131, the bottom of the second edge of the leaf ring 7 abuts against the boss 17, and the protruding portion of the leaf ring 7 is located in the accommodating space 111 between the boss 17 and the base 13; then, the second positioning column 6 passes through the first positioning hole 18 and the second positioning hole 72 to connect the protrusion 71 with the boss 17; and the first and second edges of the leaf ring 7 are pressed tightly by the first pressing plate 3, the second pressing plate 2, the third pressing plate 4 and the fourth pressing plate 5, so that the leaf ring 7 is fixed. Figure 3 As shown, when the leaf ring 7 needs to be flipped, it is placed on the support 1 after flipping. The clamping process is the same as described above. The leaf ring clamping device of this embodiment can complete the fixing of the leaf ring by clamping a pressure plate on the first edge and the second edge of the leaf ring 7. Depending on the processing method, different numbers of pressure plates can be used to clamp the leaf ring 7. If the side wall of the leaf ring 7 has a groove after processing, the pressure plate can also extend into the groove to clamp the leaf ring 7.

[0033] The utility model provides a clamping device for a leaf ring, which fixes the leaf ring 7 radially by clamping the edge of the leaf ring 7 with the clamping groove 131 and the center lines of the first positioning hole 18 and the second positioning hole 72 are collinear, and the protruding portion of the leaf ring 7 is located in the accommodating space 111 so that the edge of the leaf ring 7 can be abutted against the boss 17, and the first pressure plate 3 clamps the first edge of the leaf ring 7, and the second pressure plate 2 clamps the second edge of the leaf ring 7, so that the leaf ring 7 is fixed axially, thereby completing the fixing of the leaf ring 7 without the need for the clamping portion of the leaf ring 7, avoiding a large amount of removal during fine machining, and preventing deformation of parts. In the prior art, the clamping portion is arranged along the edge of the leaf ring 7. The leaf ring 7 is fixed by the leaf ring clamping device, so that most of the clamping portion in the prior art can be removed during the first processing of the leaf ring 7, leaving only a part of the protrusion 71. After the leaf ring 7 located on the leaf ring clamping device is processed for the second time, only the protrusion 71 needs to be removed when the leaf ring 7 is fine-processed. Compared with the prior art, the leaf ring 7 is processed by the leaf ring clamping device of the utility model, which reduces the amount of removal during fine processing and prevents deformation of parts.

[0034] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A clamping device for a blade ring, characterized in that: include: A support member, the support member includes a base and a support plate extending away from the base, the support plate is provided with a boss for abutting against the leaf ring, a receiving space for accommodating the protruding portion of the leaf ring is formed between the boss and the base, at least one first positioning hole is provided on the boss, the center line of the first positioning hole is used to be collinear with the center line of the second positioning hole on the leaf ring, and the edge of the base close to the boss is provided with a clamping groove for clamping with the leaf ring; a first pressing plate connected to the base and configured to abut against a first edge of the leaf ring; A second pressing plate is connected to the support plate and is used to abut against the second edge of the leaf ring.

2. The blade ring clamping device according to claim 1, characterized in that: The base is provided with a first mounting hole, the first mounting hole is threadedly connected to a first fastener, and the first fastener is connected to the first pressing plate.

3. The blade ring clamping device according to claim 2, characterized in that: It also includes a third pressure plate, and a second mounting hole is provided on the base. The second mounting hole, the first mounting hole and the center of the base are located in a straight line. The second mounting hole is clamped with a first positioning column, and the first positioning column passes through the third pressure plate. The third pressure plate is used to resist the leaf ring.

4. The blade ring clamping device according to claim 1, characterized in that: A third mounting hole is provided on the support plate, a second fastener is threadedly connected to the third mounting hole, the second fastener is connected to the second pressing plate, and the boss is located between the third mounting hole and the base.

5. The blade ring clamping device according to claim 1, characterized in that: The first positioning hole is clamped with a second positioning column, and the second positioning column is used to pass through the second positioning hole on the leaf ring.

6. The blade ring clamping device according to claim 5, characterized in that: It also includes a fourth pressing plate, which is used to abut against the leaf ring, and the second positioning column passes through the fourth pressing plate.

7. The blade ring clamping device according to claim 6, characterized in that: A fourth mounting hole is provided on the support plate, a third fastener is threadedly connected to the fourth mounting hole, the third fastener is connected to the fourth pressing plate, and the boss is located between the fourth mounting hole and the base.

8. The blade ring clamping device according to claim 3, characterized in that: The base is provided with a through hole, and the through hole is located between the first mounting hole and the second mounting hole.

9. The blade ring clamping device according to claim 1, characterized in that: The thickness of the first pressing plate at one end abutting against the leaf ring gradually decreases toward the boss.

10. The blade ring clamping device according to claim 1, characterized in that: A plurality of first positioning holes are provided on the boss, and the diameters of the plurality of first positioning holes are different.

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