Anti-tooth-stringing device for aviation turbine blade

Abstract

The utility model relates to an aeronautical turbine blade tooth crossing prevention device which comprises a base, a single-tooth positioning block, a mistake proofing pin, a cutting edge positioning block and a pressing block, the upper surface of the single-tooth positioning block is a reference positioning face, one side face of the single-tooth positioning block is provided with a positioning face, and the cutting edge positioning block is installed on the side, away from the positioning face, of the single-tooth positioning block. The mistake-proof pin is installed on one side of the positioning face, the pressing block is horizontally and movably arranged on one side of the positioning face, the end, close to the positioning face, of the pressing block is provided with a downward protrusion, through holes are formed in the upper surface and the lower surface of the pressing block, a limiting groove is formed in the lower surface of the pressing block, and a supporting rod and an adjusting rod are arranged below the pressing block. The bottoms of the supporting rod and the adjusting rod are installed on the base, the top end of the supporting rod is arranged in the limiting groove, and the top of the adjusting rod penetrates through the through hole to be fixed to the upper surface of the pressing block. By means of the structure, the problem that due to clamping errors of an existing blade tenon tooth groove, the blade machining quality is seriously damaged is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of turbine blade processing tooling positioning, in particular to an aviation turbine blade anti-threading device. Background Art

[0002] During the machining process of turbine blades, the single-tooth positioning clamping of the tenon tooth groove is often used to maintain the stability and accuracy of the blade machining state, thereby achieving high-precision grinding and electrical machining. However, the tooth grooves of turbine blades are often not unique, and some have particularly similar structures. During the clamping process, the clamping positioning of the tooth groove often moves, resulting in changes in the blade machining state and serious quality problems in the machining. Utility Model Content

[0003] The utility model provides an anti-tooth stringing device for aviation turbine blades, which solves the problem that the existing blade tenon tooth grooves are seriously damaged due to incorrect clamping, resulting in serious damage to the blade processing quality.

[0004] The technical solution of the utility model to solve the above technical problems is as follows:

[0005] The single-tooth positioning block is installed on the base, the upper surface of the single-tooth positioning block is the reference positioning surface, one side of the single-tooth positioning block has a positioning surface, the cutting edge positioning block is installed on the side of the single-tooth positioning block away from the positioning surface, the anti-misalignment pin is installed on one side of the positioning surface, the clamping block is arranged to move horizontally on one side of the positioning surface, the end of the clamping block close to the positioning surface has a downward protrusion, the upper and lower surfaces of the clamping block are provided with through holes, the lower surface of the clamping block is provided with a limiting groove, a support rod and an adjusting rod are arranged below the clamping block, the bottom of the support rod and the adjusting rod are installed on the base, the top of the support rod is arranged in the limiting groove, and the top of the adjusting rod passes through the through hole and is fixed to the upper surface of the clamping block.

[0006] The beneficial effect of the utility model is that the correct tooth groove positioning of the blade processing is that the first tooth groove of the blade close to the tenon bottom plate is tightly positioned with the positioning surface on the single-tooth positioning block. The anti-error pin is used to block the first tooth groove of the blade tenon bottom plate, so that the blade tenon cannot be displaced forward, so that the first tooth groove of the blade tenon is tightly pressed against the positioning surface on the single-tooth positioning block, and then the protrusion on the clamping block is tightly pressed against the tooth groove at the top of the blade tenon, and the edge positioning block is held against the tail of the blade to prevent the blade from moving. The correct clamping of the blade tenon is guaranteed, thereby achieving the purpose of anti-error in string tooth clamping and reducing the scrap rate of turbine blade processing.

[0007] On the basis of the above technical solution, the present invention can also be improved as follows.

[0008] Furthermore, the positioning surface is a trapezoidal positioning surface, and three surfaces of the trapezoidal positioning surface are adapted to the tooth shape of the blade tenon teeth.

[0009] The beneficial effect of adopting the above further scheme is that the three surfaces of the trapezoidal positioning surface are adapted to the tooth shape of the blade tenon, the first tooth groove of the blade tenon is in close contact with the three surfaces of the trapezoidal positioning surface, and the positioning of the turbine blade edge plate is coordinated so that the blade is correctly positioned and clamped, thereby ensuring the processing of the blade.

[0010] On the basis of the above technical solution, the present invention can also be improved as follows.

[0011] Furthermore, the protrusion has a curved surface, and the curved surface of the protrusion is adapted to the tooth shape of the blade tenon.

[0012] The beneficial effect of adopting the above further scheme is that the protruding arc surface is adapted to the tooth shape of the blade tenon, the protruding arc surface is tightly attached to the tooth groove at the top of the blade tenon, and the trapezoidal positioning surface is used to position and fix the blade tenon, ensuring that the blade is correctly positioned and clamped.

[0013] On the basis of the above technical solution, the present invention can also be improved as follows.

[0014] Further, the protrusion is clamped on the upper part of the blade tenon, and the positioning surface is clamped on the lower part of the blade tenon.

[0015] The beneficial effect of adopting the above further scheme is that the protrusion is clamped on the upper part of the blade tenon, and the positioning surface is clamped on the lower part of the blade tenon, so that the protrusion and the trapezoidal positioning surface can position and fix the blade tenon, ensuring the correct positioning and movement clamping of the blade.

[0016] On the basis of the above technical solution, the present invention can also be improved as follows.

[0017] Furthermore, the anti-misalignment pin abuts against the front end of the blade tenon.

[0018] The beneficial effect of adopting the above further solution is that the anti-misalignment pin abuts against the front end of the blade tenon to prevent the blade tenon from moving forward, so that the trapezoidal positioning surface can position the first tooth groove of the blade tenon, thereby ensuring the correct positioning of the blade during processing.

[0019] On the basis of the above technical solution, the present invention can also be improved as follows.

[0020] Furthermore, the cutting edge positioning block is held against the rear end of the blade tenon.

[0021] The beneficial effect of adopting the above further solution is that the cutting edge positioning block is supported on the rear end of the blade tenon and, together with the anti-misalignment pin, limits the blade tenon to prevent the blade tenon from moving forward and backward.

[0022] On the basis of the above technical solution, the present invention can also be improved as follows.

[0023] Furthermore, the through hole is a strip-shaped through hole, and the pressing block can move horizontally along the length direction of the strip-shaped through hole.

[0024] The beneficial effect of adopting the above further solution is that the clamping block moves horizontally along the length direction of the strip-shaped through hole, so that the clamping block can place the protruding part into any tooth groove at the top of the blade tenon through horizontal movement, thereby clamping and positioning the blade tenon.

[0025] On the basis of the above technical solution, the present invention can also be improved as follows.

[0026] Furthermore, the limiting groove is a strip-shaped limiting groove, and the length direction of the strip-shaped limiting groove is consistent with the length direction of the strip-shaped through hole.

[0027] The beneficial effect of adopting the above further solution is that the limiting groove is a strip limiting groove, and the length direction of the strip limiting groove is consistent with the length direction of the strip through hole. When the pressing block moves along the strip through hole, the top of the support rod will also move in the strip limiting groove along the length direction of the strip limiting groove. At the same time, the length direction of the strip limiting groove limits the support rod from moving in other directions, and limits the pressing block to only move horizontally in the length direction of the strip through hole.

[0028] On the basis of the above technical solution, the present invention can also be improved as follows.

[0029] Furthermore, the adjusting rod is detachably mounted on the pressing block.

[0030] The beneficial effect of adopting the above further solution is that the adjusting rod can be detachably mounted on the pressing block, and after the top of the adjusting rod is removed, the pressing block can be removed, and then the tenon of the blade can be positioned and installed. Finally, the pressing block is installed on the adjusting rod, and the adjusting rod is used to lock the pressing block, thereby fixing the tenon of the blade.

[0031] On the basis of the above technical solution, the present invention can also be improved as follows.

[0032] Furthermore, the pressing block is detachably arranged on the supporting rod.

[0033] The beneficial effect of adopting the above further solution is that the pressing block can be detachably arranged on the support rod, and the pressing block can be removed first when installing the blade tenon. After the blade is installed, the pressing block is installed on the support rod, so that the top of the support rod is supported on the bottom of the pressing block, which plays a supporting role for the pressing block. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of the structure of an aviation turbine blade anti-gear stringing device of the utility model when it is working;

[0035] Figure 2 It is a structural schematic diagram of the utility model;

[0036] Figure 3 It is a front schematic diagram of the utility model.

[0037] In the accompanying drawings, the list of components represented by each number is as follows: 110-base; 130-single-tooth positioning block; 131-reference positioning surface; 133-positioning surface; 1331-trapezoidal positioning surface; 150-anti-misalignment pin; 170-blade positioning block; 190-pressing block; 191-protrusion; 1911-arc surface; 193-through hole; 1931-strip through hole; 195-limiting groove; 197-support rod; 199-adjusting rod. DETAILED DESCRIPTION

[0038] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0039] Example 1

[0040] like Figure 1-3 As shown, the single-tooth positioning block 130 is installed on the base 110, the upper surface of the single-tooth positioning block 130 is the reference surface, one side of the single-tooth positioning block 130 has a positioning surface 133, the edge positioning block 170 is installed on the side of the single-tooth positioning block 130 away from the positioning surface 133, the anti-error pin 150 is installed on the side of the positioning surface 133, the clamping block 190 is arranged to move horizontally on the side of the positioning surface 133, the end of the clamping block 190 close to the positioning surface 133 has a downward protrusion 191, the upper and lower surfaces of the clamping block 190 are provided with through holes 193, the lower surface of the clamping block 190 is provided with a limiting groove 195, and a support rod 197 and an adjusting rod 199 are arranged below the clamping block 190. The bottom of the support rod 197 and the adjusting rod 199 are installed on the base 110, the top of the support rod 197 is arranged in the limiting groove 195, and the top of the adjusting rod 199 passes through the through hole 193 and is fixed to the upper surface of the clamping block 190.

[0041] Specifically, the anti-misalignment pin 150 is installed on one side of the positioning surface 133. When the blade is installed, the front end of the blade tenon is pressed against the anti-misalignment pin 150, and the rear end of the blade is pressed against the edge positioning block 170. The first tooth groove of the blade tenon is tightly fixed with the three surfaces of the positioning surface 133, and then the pressing block 190 is moved to make the protrusion 191 of the pressing block 190 tightly fit with the tooth groove at the top of the blade tenon, and the top of the adjusting rod 199 is adjusted. The adjusting rod 199 locks the pressing block 190, and the pressing block 190 presses and fixes the tenon of the blade.

[0042] like Figure 1-3As shown, the positioning surface 133 is a trapezoidal positioning surface 1331, and the three surfaces of the trapezoidal positioning surface 1331 are adapted to the tooth shape of the blade tenon.

[0043] Specifically, the three surfaces of the trapezoidal positioning surface 1331 are adapted to the tooth shape of the blade tenon, and the first tooth groove of the blade tenon is in close contact with the three surfaces of the trapezoidal positioning surface 1331, cooperating with the positioning of the turbine blade edge plate, so that the blade is correctly positioned and clamped.

[0044] like Figure 1-3 As shown, the protrusion 191 has a curved surface 1911, and the curved surface 1911 of the protrusion 191 is adapted to the tooth shape of the blade tenon.

[0045] Specifically, the arc surface 1911 of the protrusion 191 is adapted to the tooth shape of the blade tenon, and the arc surface 1911 of the protrusion 191 is tightly attached to the tooth groove at the top of the blade tenon, and the trapezoidal positioning surface 1331 positions and fixes the blade tenon to ensure that the blade is correctly positioned and clamped.

[0046] like Figure 1-3 As shown, the protrusion 191 is clamped on the upper part of the blade tenon, and the positioning surface 133 is clamped on the lower part of the blade tenon.

[0047] Specifically, the protrusion 191 is clamped on the upper part of the blade tenon, and the positioning surface 133 is clamped on the lower part of the blade tenon. The protrusion 191 and the trapezoidal positioning surface 1331 fix the upper and lower positions of the blade tenon.

[0048] like Figure 1-3 As shown, the anti-misalignment pin 150 abuts against the front end of the blade tenon.

[0049] Specifically, the anti-misalignment pin 150 abuts against the front end of the blade tenon to prevent the blade tenon from moving forward, and the trapezoidal positioning surface 1331 is placed in the first tooth groove of the blade tenon to position the blade tenon.

[0050] like Figure 1-3 As shown, the cutting edge positioning block 170 abuts against the rear end of the blade tenon.

[0051] Specifically, the blade edge positioning block 170 abuts against the rear end of the blade tenon, and together with the anti-misalignment pin 150, limits the blade tenon to prevent the blade tenon from moving forward and backward.

[0052] like Figure 1-3 As shown, the through hole 193 is a bar-shaped through hole 1931 , and the pressing block 190 can move horizontally along the length direction of the bar-shaped through hole 1931 .

[0053] Specifically, the pressing block 190 moves horizontally to place the protrusion 191 into any tooth groove at the top of the blade tenon, thereby pressing and positioning the blade tenon.

[0054] like Figure 1-3 As shown, the limiting groove 195 is a strip-shaped limiting groove, and the length direction of the strip-shaped limiting groove is consistent with the length direction of the strip-shaped through hole 1931.

[0055] Specifically, when the clamping block 190 moves along the strip through hole 1931, the top of the support rod 197 will also move in the strip limiting groove along the length direction of the strip limiting groove. At the same time, the length direction of the strip limiting groove limits the support rod 197 from moving in other directions, limiting the clamping block 190 to move horizontally only in the length direction of the strip through hole 1931.

[0056] like Figure 1-3 As shown, the adjustment rod 199 is detachably mounted on the pressing block 190 .

[0057] Specifically, after the top of the adjusting rod 199 is disassembled, the pressing block 190 can be disassembled, and then the blade tenon is positioned and installed. Finally, the pressing block 190 is installed on the adjusting rod 199, and the adjusting rod 199 is used to lock the pressing block 190, thereby fixing the tenon of the blade.

[0058] like Figure 1-3 As shown, the pressing block 190 is detachably arranged on the support rod 197 .

[0059] Specifically, when installing the blade tenon, first remove the pressing block 190. After the blade is installed, the pressing block 190 is installed on the support rod 197, and the top of the support rod 197 is supported on the bottom of the pressing block 190.

[0060] The beneficial effects of this embodiment are as follows: the correct tooth groove positioning of the blade processing is that the three surfaces of the first tooth groove of the blade close to the tenon bottom plate and the positioning surface 133 on the single-tooth positioning block 130 are tightly positioned, and the positioning of the turbine blade edge plate is coordinated to ensure that the blade is correctly positioned and clamped, thereby ensuring the processing of the blade. The anti-error pin 150 is used to block the first tooth groove of the blade tenon bottom plate, so that the blade tenon cannot be displaced forward, so that the first tooth groove of the blade tenon is tightly attached to the positioning surface 133 on the single-tooth positioning block 130, and the edge positioning block 170 is held against the tail of the blade. The edge positioning block 170 and the anti-error pin 150 limit the front and rear positions of the blade to prevent the blade from moving forward and backward. Then, the arc surface 1911 of the protrusion 191 on the clamping block 190 is tightly attached to the tooth groove at the top of the blade tenon, ensuring the correct clamping of the blade tenon, thereby achieving the purpose of anti-error in string tooth clamping and reducing the scrap rate of turbine blade processing.

[0061] The working process of this embodiment is as follows: when installing the blade, first disassemble the pressing block 190 and the adjusting rod 199, then the front end of the blade tenon is abutted against the anti-misalignment pin 150, and the rear end of the blade is abutted against the blade positioning block 170. The first tooth groove of the blade tenon is tightly fixed with the three surfaces of the positioning surface 133, then the pressing block 190 is installed and moved, the protrusion 191 of the pressing block 190 is tightly pressed against the tooth groove at the top of the blade tenon, the top of the adjusting rod 199 is adjusted, and the adjusting rod 199 and the support rod 197 lock the pressing block 190, and then the pressing block 190 presses and fixes the tenon of the blade.

[0062] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0063] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0064] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0065] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0066] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0067] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An anti-gear device for aviation turbine blades, characterized in that: The invention comprises a base (110), a single-tooth positioning block (130), an anti-misalignment pin (150), a cutting edge positioning block (170) and a pressing block (190), wherein the single-tooth positioning block (130) is mounted on the base (110), the upper surface of the single-tooth positioning block (130) is a reference positioning surface (131), one side surface of the single-tooth positioning block (130) has a positioning surface (133), the cutting edge positioning block (170) is mounted on a side of the single-tooth positioning block (130) away from the positioning surface (133), the anti-misalignment pin (150) is mounted on a side of the positioning surface (133), and the pressing block (190) is arranged on a side of the positioning surface (133) for horizontal movement. On the side, one end of the clamping block (190) close to the positioning surface (133) has a downward protrusion (191), the upper and lower surfaces of the clamping block (190) are provided with a through hole (193), the lower surface of the clamping block (190) is provided with a limiting groove (195), and a support rod (197) and an adjusting rod (199) are arranged below the clamping block (190), the bottom of the support rod (197) and the adjusting rod (199) are installed on the base (110), the top of the support rod (197) is arranged in the limiting groove (195), and the top of the adjusting rod (199) passes through the through hole (193) and is fixed to the upper surface of the clamping block (190).

2. The anti-gear device for aviation turbine blades according to claim 1, characterized in that: The positioning surface (133) is a trapezoidal positioning surface (1331), and the three surfaces of the trapezoidal positioning surface (1331) are adapted to the tooth shape of the blade tenon teeth.

3. The anti-gear device for aviation turbine blades according to claim 1, characterized in that: The protrusion (191) has a curved surface (1911), and the curved surface (1911) of the protrusion (191) is adapted to the tooth shape of the blade tenon.

4. The anti-gear device for aviation turbine blades according to claim 1, characterized in that: The protrusion (191) is clamped on the upper part of the blade tenon, and the positioning surface (133) is clamped on the lower part of the blade tenon.

5. The anti-gear device for aviation turbine blades according to claim 1, characterized in that: The anti-error pin (150) is held against the front end of the blade tenon.

6. The anti-gear device for aviation turbine blades according to claim 1, characterized in that: The cutting edge positioning block (170) is abutted against the rear end of the blade tenon.

7. The anti-gear device for aviation turbine blades according to claim 1, characterized in that: The through hole (193) is a strip-shaped through hole (1931), and the pressing block (190) can move horizontally along the length direction of the strip-shaped through hole (1931).

8. The anti-gear device for aviation turbine blades according to claim 1, characterized in that: The limiting groove (195) is a strip-shaped limiting groove, and the length direction of the strip-shaped limiting groove is consistent with the length direction of the strip-shaped through hole (1931).

9. The anti-gear device for aviation turbine blades according to claim 1, characterized in that: The adjusting rod (199) is detachably mounted on the pressing block (190).

10. The anti-gear device for aviation turbine blades according to claim 1, characterized in that: The pressing block (190) is detachably arranged on the supporting rod (197).

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