CN217254499U - Clamp for processing tooth shape of blade root - Google Patents

Clamp for processing tooth shape of blade root Download PDF

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Publication number
CN217254499U
CN217254499U CN202221311291.2U CN202221311291U CN217254499U CN 217254499 U CN217254499 U CN 217254499U CN 202221311291 U CN202221311291 U CN 202221311291U CN 217254499 U CN217254499 U CN 217254499U
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China
Prior art keywords
blade
positioning block
base
stud
pressing plate
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CN202221311291.2U
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Chinese (zh)
Inventor
王玉君
庞公臣
张海涛
王海东
储继影
李文涛
黄兴军
成国富
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Harbin Turbine Co Ltd
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Harbin Turbine Co Ltd
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    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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    • Y02E10/72Wind turbines with rotation axis in wind direction

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Abstract

A clamp for processing the tooth shape of a blade root relates to the technical field of machining. For solving current anchor clamps and all adopting the integral type structure, can not be applicable to not unidimensional blade to lead to the commonality lower, and when processing the blade, because of the length overlength of blade, current anchor clamps do not have the support in the bottom of blade, lead to blade deformation, can't satisfy the problem of designing requirement. The middle part of the upper surface of the base is processed with a positioning through groove along the axis direction, two sides of the positioning through groove are respectively provided with a pair of strip-shaped through holes, one end of the upper surface of the base is provided with a blade shroud positioning block, the middle part of the lower surface of the blade shroud positioning block is also provided with a square bulge, the square bulge on the bottom surface of the blade shroud positioning block is matched and slidably connected with the positioning through groove on the base, and the structure can clamp and position blades with different lengths, so that the universality of the clamp is improved; and the middle part of the bottom surface of the blade is supported, and the finished product rate of blade processing is improved. The utility model is suitable for a blade processing.

Description

Clamp for processing tooth form of blade root
Technical Field
The utility model relates to a machining technology field, concretely relates to an anchor clamps for processing blade root profile of tooth.
Background
The requirement on the machining precision of the turbine blade is high, and particularly the relative position between the blade root and the blade shroud of each blade directly influences the overall quality of the final assembly. In order to adapt to the whole technical requirement, the deformation of the blade is reduced (the longer the blade is, the larger the deformation is), the blade is processed and produced in a mode of post-processing the tooth form of the blade root, but the existing clamps all adopt an integrated structure and cannot be suitable for the blades of different sizes, so that the problem of low universality is caused, and when the existing clamps are used for processing the blade, the existing clamps are not supported at the bottom of the blade due to the overlong length of the blade, so that the blade is deformed in the processing process, and the problem of design requirements cannot be met.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve current anchor clamps and all adopt the integral type structure, can not be applicable to not unidimensional blade to lead to the commonality lower, and current anchor clamps are when processing the blade, because of the length overlength of blade, current anchor clamps do not have the support in the bottom of blade, lead to at the in-process blade deformation of processing, can't satisfy the problem of designing requirement, and provide an anchor clamps that is used for processing the profile of tooth of blade root.
The utility model discloses a fixture for processing blade root profile of tooth, its constitution includes base, blade intermediate locating piece, intermediate clamping dog, voussoir, stud, hex bolts, packing ring, hexagon socket head cap screw, stud, intermediate clamp plate, blade shroud locating piece, cylindric lock, stud, hexagon nut, packing ring, blade shroud clamp plate, auxiliary beam and auxiliary clamp plate;
a positioning through groove is processed in the middle of the upper surface of the base along the axis direction, a pair of strip-shaped through holes is respectively arranged on two sides of the positioning through groove, a tip shroud positioning block is arranged at one end of the upper surface of the base, a square bulge is also arranged in the middle of the lower surface of the tip shroud positioning block, the square bulge on the bottom surface of the tip shroud positioning block is matched and slidably connected with the positioning through groove on the base, a pair of threaded holes are respectively arranged at two ends of the lower surface of the tip shroud positioning block, the threaded holes of the lower surface of the tip shroud positioning block are connected with the strip-shaped through holes on the base through bolts, a threaded hole is arranged at one end of the upper surface of the tip shroud positioning block, a third stud is arranged inside the threaded hole, the top of the third stud sequentially penetrates through holes in the middle of the tip shroud pressing plate and a second washer and is in threaded connection with a hexagon nut, a blind hole is arranged in the middle of the upper surface of the tip shroud positioning block, and the bottom end of a cylindrical pin is inserted into the blind hole, a blade intermediate positioning block is arranged in the middle of the other end of the upper surface of the base, a square bulge is processed at the bottom of the blade intermediate positioning block, the square bulge at the bottom of the blade intermediate positioning block is matched and connected with a positioning through groove on the base, the blade intermediate positioning block is connected with the base through a hexagon socket head cap screw, two intermediate clamping stop blocks are respectively arranged on two sides of the other end of the upper surface of the base, a second stud is arranged between one intermediate clamping stop block and one end of the blade intermediate positioning block, the bottom end of the second stud is fixedly connected with the upper surface of the base, the top end of the second stud is in threaded connection with a nut after sequentially penetrating through a through hole in the middle of an intermediate pressing plate and a gasket, a threaded hole is arranged on the upper surface of the other end of the blade intermediate positioning block, and the threaded hole is in threaded connection with the bottom of the first stud, the top end of a first stud sequentially penetrates through a through hole in the middle of the wedge block and a first washer and then is in threaded connection with a first hexagon bolt, two threaded holes are machined in the vicinity of one side of a blade intermediate positioning block on the base and are symmetrically arranged relative to the axis of the base, a stud is arranged in each threaded hole, the top end of each stud penetrates through the auxiliary pressing plate and then is connected with a compression nut, and an auxiliary cross beam is arranged in the middle of the bottom surface of the auxiliary pressing plate;
furthermore, an inclined plane is processed at one end of the lower surface of the blade shroud pressing plate;
furthermore, a copper sheet is arranged on an inclined plane at one end of the lower surface of the blade shroud pressing plate;
furthermore, an inclined plane is processed on one side of the upper surface of the intermediate body clamping stop block;
furthermore, the section of the intermediate pressing plate is L-shaped;
furthermore, a copper sheet is arranged on the bottom surface of the short side of the intermediate pressing plate;
furthermore, the axis of the auxiliary pressure plate is perpendicular to the axis of the base;
furthermore, the axis of the auxiliary pressure plate is parallel to the axis of the blade intermediate positioning block;
further, when the blade is used, firstly, a reference structure diagram of the structures of a blade intermediate positioning block, a blade shroud positioning block and a wedge block is designed according to the specific size of the blade to be processed. Then the whole set of the clamp is assembled into a whole; the L-shaped size is adjusted according to the length of the blade, the length direction is fixed through a cylindrical pin, and the L-shaped size is fixed through an inner hexagonal cylindrical head screw. The intermediate body and the blade shroud of the blade to be processed are positioned accurately and consistently, the blade is placed well, the intermediate body clamping part is screwed and pressed firmly, and the blade shroud clamping part is screwed and pressed firmly. Some blade intermediates are too narrow, and the direct pressing mechanism of the intermediate is limited, so that the pressing mode can be a pressing structure consisting of a second stud, a hexagon nut, a second washer, an auxiliary beam and an auxiliary pressing plate. The auxiliary cross beam is pressed in the blade intermediate body and the blade shroud molded line groove, and the auxiliary cross beam is pressed through the auxiliary pressing plate to indirectly press the blade to be processed.
Compared with the prior art, the utility model following beneficial effect has:
the utility model overcomes the defects of the prior art, the middle part of the upper surface of the base is provided with a positioning through groove along the axis direction, the two sides of the positioning through groove are respectively provided with a pair of bar-shaped through holes, one end of the upper surface of the base is provided with a blade crown positioning block, the middle part of the lower surface of the blade crown positioning block is also provided with a square bulge, the square bulge on the bottom surface of the blade crown positioning block is matched with the positioning through groove on the base for sliding connection, the structure can clamp and position blades with different lengths, and the universality of the clamp is improved;
this application still adopts the upper surface middle part of leaf crown locating piece to be equipped with the blind hole, and the bottom of cylindric lock inserts the inside of this blind hole, realizes the support to blade bottom surface middle part, prevents at the in-process blade deformation of processing, improves the yield of blade processing.
Drawings
Fig. 1 is a front view of a fixture for machining a tooth profile of a blade root according to the present invention in a use state;
fig. 2 is a top view of a fixture for machining a tooth profile of a blade root according to the present invention;
FIG. 3 is a cross-sectional view of a fixture A-A for machining the tooth profile of a blade root as illustrated in FIG. 2;
FIG. 4 is a cross-sectional view of a fixture B-B for machining a tooth profile of a blade root as illustrated in FIG. 2;
FIG. 5 is a front view of a bucket machined using the fixture of the present application;
FIG. 6 is a side cross-sectional view of a blade after machining with the fixture of the present application.
Detailed Description
The first embodiment is as follows: the embodiment is described with reference to fig. 1 to 4, and the fixture for processing the tooth form of the blade root of the blade in the embodiment includes a base 1, a blade intermediate positioning block 2, an intermediate clamping stop 3, a wedge block 4, a first stud 5, a first hexagon bolt 6, a first washer 7, an inner hexagon socket head cap screw 8, a second stud 9, an intermediate pressing plate 10, a blade shroud positioning block 11, a cylindrical pin 12, a third stud 13, a hexagon nut 14, a second washer 15, a blade shroud pressing plate 16, an auxiliary cross beam 17 and an auxiliary pressing plate 18;
a positioning through groove is processed in the middle of the upper surface of the base 1 along the axis direction, a pair of strip-shaped through holes are respectively arranged on two sides of the positioning through groove, a tip shroud positioning block 11 is arranged at one end of the upper surface of the base 1, a square bulge is also arranged in the middle of the lower surface of the tip shroud positioning block 11, the square bulge on the bottom surface of the tip shroud positioning block 11 is matched and slidably connected with the positioning through groove on the base 1, a pair of threaded holes are respectively arranged at two ends of the lower surface of the tip shroud positioning block 11, the threaded holes on the lower surface of the tip shroud positioning block 11 are connected with the strip-shaped through holes on the base 1 through bolts, a threaded hole is arranged at one end of the upper surface of the tip shroud positioning block 11, a third stud 13 is arranged inside the threaded hole, the top of the third stud 13 sequentially penetrates through holes in the middle of the tip shroud pressing plate 16 and a second washer 15 and is in threaded connection with a hexagon nut 14, a blind hole is arranged in the middle of the upper surface of the tip shroud positioning block 11, the bottom end of a cylindrical pin 12 is inserted into the blind hole, a blade intermediate positioning block 2 is arranged in the middle of the other end of the upper surface of a base 1, square bulges are processed at the bottom of the blade intermediate positioning block 2, the square bulges at the bottom of the blade intermediate positioning block 2 are matched and connected with a positioning through groove on the base 1, the blade intermediate positioning block 2 is connected with the base 1 through hexagon socket head cap screws 8, two intermediate clamping check blocks 3 are respectively arranged on two sides of the other end of the upper surface of the base 1, a second stud 9 is arranged between one intermediate clamping check block 3 and one end of the blade intermediate positioning block 2, the bottom end of the second stud 9 is fixedly connected with the upper surface of the base 1, the top end of the second stud 9 sequentially penetrates through a through hole in the middle of an intermediate pressing plate 10 and a gasket and then is in threaded connection with a nut, a threaded hole is arranged on the upper surface of the other end of the blade intermediate positioning block 2, the threaded hole is in threaded connection with the bottom of a first stud 5, the top end of the first stud 5 sequentially penetrates through a through hole in the middle of a wedge block 4 and a washer 7 and then is in threaded connection with a first hexagon bolt 6, two threaded holes are machined in the base 1 near one side of a blade intermediate positioning block 2, the two threaded holes are symmetrically arranged relative to the axis of the base 1, a stud is arranged inside each threaded hole, the top end of each stud penetrates through an auxiliary pressing plate 18 and then is connected with a compression nut, and an auxiliary cross beam 17 is arranged in the middle of the bottom surface of the auxiliary pressing plate 18;
in the embodiment, when in use, firstly, the reference structure schematic diagram of the module structures of the blade intermediate positioning block 2, the blade shroud positioning block 11 and the wedge 4 is designed according to the specific size of the blade to be processed. Then the whole set of the clamp is assembled into a whole; the L size is adjusted according to the length of the blade, the length direction is positioned through the cylindrical pin 12, and the L size is fixed through the hexagon socket head cap screw 8. The intermediate body and the blade shroud of the blade to be processed are positioned accurately and consistently, the blade is placed well, the intermediate body clamping part is screwed and pressed firmly, and the blade shroud clamping part is screwed and pressed firmly. Some blade intermediates are too narrow, and direct compression mechanisms of the intermediates are limited, so that compression modes can be selected from compression structures consisting of a second stud bolt 9, a hexagon nut 14, a second washer 15, an auxiliary cross beam 17 and an auxiliary pressure plate 18. Namely, the auxiliary beam 17 is pressed in the blade intermediate body and the blade shroud line groove, and the auxiliary beam 17 is pressed through the auxiliary pressure plate 18 to indirectly press the blade to be processed.
The second embodiment is as follows: the present embodiment is described with reference to fig. 1 to 4, and the present embodiment further defines the fixture according to the first embodiment, and the fixture according to the present embodiment is used for processing the tooth form of the blade root, and one end of the lower surface of the shroud pressing plate 16 is processed with a bevel;
in the present embodiment, an inclined surface is formed at one end of the lower surface of the shroud pressing plate 16, which facilitates surface contact with the outer surface of the blade, thereby improving the positioning accuracy.
The third concrete implementation mode: the present embodiment is described with reference to fig. 1 to 4, and the present embodiment is a further limitation to the fixture described in the second embodiment, and the fixture described in the present embodiment is used for processing the tooth form of the blade root of the blade, and a copper sheet is provided on the inclined surface at one end of the lower surface of the shroud pressing plate 16;
in the embodiment, the copper sheet is arranged on the inclined plane at one end of the lower surface of the blade shroud pressing plate 16, so that the outer surface of the blade is prevented from being abraded during processing.
The fourth concrete implementation mode is as follows: the present embodiment is described with reference to fig. 1 to 4, and the present embodiment further defines the fixture according to the first embodiment, and the fixture according to the present embodiment is used for processing the tooth form of the blade root, and one side of the upper surface of the intermediate clamping block 3 is processed with an inclined surface;
in the embodiment, inclined planes are processed at two ends of the bottom surface of the wedge block 4, and the inclined plane at one end of the wedge block 4 is in contact with the inclined plane at the upper end of the intermediate clamping block 3, so that the blade is transversely positioned.
The fifth concrete implementation mode: the present embodiment is described with reference to fig. 1 to 4, and the present embodiment further defines the fixture according to the first embodiment, and the intermediate pressing plate 10 in the present embodiment has an L-shaped cross section for processing the tooth profile of the blade root.
The sixth specific implementation mode is as follows: the present embodiment is described with reference to fig. 1 to 4, and is a further limitation of the fixture according to the fifth embodiment, and the fixture for machining the tooth profile of the blade root according to the present embodiment is provided with a copper sheet on the bottom surface of the short side of the intermediate pressing plate 10.
The seventh embodiment: the present embodiment is described with reference to fig. 1 to 4, and is further limited to the jig according to the first embodiment, and the jig according to the present embodiment is used for processing the tooth profile of the blade root, and the axis of the auxiliary pressure plate 18 is perpendicular to the axis of the base 1.
The specific implementation mode is eight: the present embodiment is described with reference to fig. 1 to 4, and is further limited to the fixture according to the seventh embodiment, in which the axis of the auxiliary pressure plate 18 is arranged in parallel with the axis of the blade intermediate positioning block 2 in the fixture for machining the blade root profile according to the present embodiment.
Principle of operation
When in use, firstly, the module structure reference structure diagram of the blade intermediate positioning block 2, the blade shroud positioning block 11 and the wedge 4 is designed according to the specific size of the blade to be processed. Then the whole set of the clamp is assembled into a whole; the L size is adjusted according to the length of the blade, the length direction is positioned through the cylindrical pin 12, and the L size is fixed through the hexagon socket head cap screw 8. The intermediate body and the blade shroud of the blade to be processed are positioned accurately and consistently, the blade is placed well, the intermediate body clamping part is screwed and pressed firmly, and the blade shroud clamping part is screwed and pressed firmly. Some blade intermediates are too narrow, and direct compression mechanisms of the intermediates are limited, so that compression modes can be selected from a compression structure consisting of a second stud 9, a hexagon nut 14, a second washer 15, an auxiliary cross beam 17 and an auxiliary pressure plate 18. Namely, the auxiliary beam 17 is pressed in the blade intermediate body and the blade shroud line groove, and the auxiliary beam 17 is pressed through the auxiliary pressure plate 18 to indirectly press the blade to be processed.

Claims (8)

1. The utility model provides a anchor clamps for processing blade root profile of tooth which characterized in that: the blade middle body clamping device comprises a base (1), a blade middle body positioning block (2), a middle body clamping stop block (3), a wedge block (4), a first stud (5), a first hexagon bolt (6), a first gasket (7), an inner hexagon socket head cap screw (8), a second stud (9), a middle body pressing plate (10), a blade crown positioning block (11), a cylindrical pin (12), a third stud (13), a hexagon nut (14), a second gasket (15), a blade crown pressing plate (16), an auxiliary cross beam (17) and an auxiliary pressing plate (18);
the middle part of the upper surface of the base (1) is processed with a positioning through groove along the axis direction, two sides of the positioning through groove are respectively provided with a pair of strip-shaped through holes, one end of the upper surface of the base (1) is provided with a tip shroud positioning block (11), the middle part of the lower surface of the tip shroud positioning block (11) is also provided with a square bulge, the square bulge on the bottom surface of the tip shroud positioning block (11) is matched and slidably connected with the positioning through groove on the base (1), two ends of the lower surface of the tip shroud positioning block (11) are respectively provided with a pair of threaded holes, the threaded holes on the lower surface of the tip shroud positioning block (11) are connected with the strip-shaped through holes on the base (1) through bolts, one end of the upper surface of the tip shroud positioning block (11) is provided with a threaded hole, a third stud (13) is arranged inside the threaded hole, and the top of the third stud (13) sequentially passes through a through hole in the middle part of the tip shroud pressing plate (16) and a second washer (15), is in threaded connection with a hexagon nut (14), a blind hole is arranged in the middle of the upper surface of a blade crown positioning block (11), the bottom end of a cylindrical pin (12) is inserted into the blind hole, a blade intermediate positioning block (2) is arranged in the middle of the other end of the upper surface of a base (1), a square bulge is processed at the bottom of the blade intermediate positioning block (2), the square bulge at the bottom of the blade intermediate positioning block (2) is matched and connected with a positioning through groove on the base (1), the blade intermediate positioning block (2) is connected with the base (1) through an inner hexagon cap head screw (8), two intermediate clamping stop blocks (3) are respectively arranged on two sides of the other end of the upper surface of the base (1), a second stud (9) is arranged between one intermediate clamping stop block (3) and one end of the blade intermediate positioning block (2), and the bottom end of the second stud (9) is fixedly connected with the upper surface of the base (1), the top end of the second stud (9) sequentially passes through the through hole in the middle of the middle pressing plate (10) and the gasket, is connected with the nut by screw thread, the upper surface of the other end of the blade intermediate positioning block (2) is provided with a threaded hole, the threaded hole is in threaded connection with the bottom of the first stud (5), the top end of the first stud (5) sequentially penetrates through the through hole in the middle of the wedge block (4) and the first washer (7), is connected with a first hexagon bolt (6) in a threaded way, two threaded holes are processed near one side of the blade intermediate positioning block (2) on the base (1), and the two threaded holes are symmetrically arranged relative to the axis of the base (1), a stud is arranged in each threaded hole, and the top end of each stud passes through the auxiliary pressure plate (18), is connected with a compression nut, and the middle part of the bottom surface of the auxiliary pressure plate (18) is provided with an auxiliary beam (17).
2. The jig for machining the tooth profile of a blade root as claimed in claim 1, wherein: one end of the lower surface of the blade shroud pressing plate (16) is provided with a bevel.
3. The fixture for processing the tooth profile of the blade root as claimed in claim 2, wherein: the inclined plane at one end of the lower surface of the blade crown pressing plate (16) is provided with a copper sheet.
4. The jig for machining the tooth profile of a blade root as claimed in claim 1, wherein: an inclined plane is processed on one side of the upper surface of the intermediate clamping block (3).
5. The jig for machining the tooth profile of a blade root as claimed in claim 1, wherein: the section of the intermediate pressing plate (10) is L-shaped.
6. The jig for machining the tooth profile of a blade root as claimed in claim 5, wherein: the bottom surface of the short side of the intermediate pressing plate (10) is provided with a copper sheet.
7. The jig for machining the tooth profile of a blade root as claimed in claim 1, wherein: the axis of the auxiliary pressure plate (18) is vertical to the axis of the base (1).
8. The jig for machining the tooth profile of a blade root as claimed in claim 7, wherein: the axis of the auxiliary pressure plate (18) is parallel to the axis of the blade intermediate positioning block (2).
CN202221311291.2U 2022-05-26 2022-05-26 Clamp for processing tooth shape of blade root Active CN217254499U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202221311291.2U CN217254499U (en) 2022-05-26 2022-05-26 Clamp for processing tooth shape of blade root

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202221311291.2U CN217254499U (en) 2022-05-26 2022-05-26 Clamp for processing tooth shape of blade root

Publications (1)

Publication Number Publication Date
CN217254499U true CN217254499U (en) 2022-08-23

Family

ID=82887974

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202221311291.2U Active CN217254499U (en) 2022-05-26 2022-05-26 Clamp for processing tooth shape of blade root

Country Status (1)

Country Link
CN (1) CN217254499U (en)

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