CN113210160B - Blade vacuum spraying protection clamp - Google Patents
Blade vacuum spraying protection clamp Download PDFInfo
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- CN113210160B CN113210160B CN202110317952.6A CN202110317952A CN113210160B CN 113210160 B CN113210160 B CN 113210160B CN 202110317952 A CN202110317952 A CN 202110317952A CN 113210160 B CN113210160 B CN 113210160B
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- blade
- plate
- protective cover
- clamp
- side plates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/16—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling the spray area
- B05B12/20—Masking elements, i.e. elements defining uncoated areas on an object to be coated
- B05B12/26—Masking elements, i.e. elements defining uncoated areas on an object to be coated for masking cavities
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
Abstract
The invention discloses a blade vacuum spraying protection clamp, which comprises: a first mouth of wearing to establish for being used for the anchor clamps totality that links to each other with vacuum spraying equipment is equipped with the holding chamber in the anchor clamps totality, offers the flange that supplies working vane and the blade body on the outer wall of anchor clamps totality and exposes, and first mouthful and the holding chamber intercommunication of wearing to establish. The containing cavity is internally provided with a positioning pin which is used for extending into the mortise from the end face of the tenon so as to support and position the working blade. The first penetrating opening is in sealing contact with the periphery of the edge plate which is supported and positioned on the positioning pin, so that the edge plate is clamped and positioned along the circumferential direction, and the first penetrating opening and the edge plate are matched to act as a sealing accommodating cavity. The clamp overall cover is provided with a protective cover, the protective cover is used for exposing the blade tip of the blade body for vacuum spraying, and the edge plate exposed out of the accommodating cavity and the rest part of the blade body are hermetically covered. The fixture disclosed by the invention is simple in positioning operation, stable in supporting of the working blade, reliable in positioning and high in positioning precision, and the machining efficiency and the spraying quality are improved for spraying the surface of the blade.
Description
Technical Field
The invention relates to the field of blade spraying protection devices, in particular to a blade vacuum spraying protection clamp.
Background
The gas turbine secondary working blade is an important component of a turbine part of an aeroengine, the working environment of the part is severe, a single crystal material is mostly selected as a blade base material, a high-temperature heat corrosion resistant coating material needs to be sprayed on the surfaces of a blade body and a blade shroud of the blade in order to protect the blade base body and prolong the service life of the blade, and the tenon part does not need to be sprayed.
The vacuum plasma spraying is selected as the spraying process, the vacuum plasma spraying is metal thermal spraying carried out in a vacuum environment state, a part is in a high-temperature state in the spraying process, flexible protection cannot be adopted to protect the tenon part, and a special protection tool needs to be designed to ensure that the tenon tooth part is not polluted by the spraying.
Small-size aeroengine gas turbine second grade working vane need carry out the regional protection of non-spraying when carrying out vacuum plasma spraying, as shown in fig. 1, compare in conventional gas turbine working vane, there are a plurality of space torsion angles on the length side of this blade flange, the clamping of being not convenient for very much and sealed, current conventional blade spraying protector can not be used for the clamping to protect this novel gas turbine second grade working vane.
Disclosure of Invention
The invention provides a blade vacuum spraying protection clamp, which aims to solve the technical problem that the existing spraying protection clamp cannot be applied to a novel gas turbine secondary working blade.
The technical scheme adopted by the invention is as follows:
a blade vacuum spray coating protection fixture, comprising: the fixture assembly is used for being connected with vacuum spraying equipment, an accommodating cavity for accommodating a tenon of a working blade to be sprayed is arranged in the fixture assembly, a first penetrating hole for exposing a flange plate and a blade body of the working blade is formed in the outer wall of the fixture assembly, and the first penetrating hole is communicated with the accommodating cavity; the positioning pin is arranged in the accommodating cavity and used for extending into the mortise from the end face of the tenon so as to support and position the working blade; the first penetrating opening is in sealing contact with the periphery of the edge plate supported and positioned on the positioning pin so as to clamp and position the edge plate along the circumferential direction, and the first penetrating opening and the edge plate are matched to act to seal the accommodating cavity; the overall clamp cover is provided with a protective cover, and the protective cover is used for exposing the blade tip of the blade body for vacuum spraying and sealing and covering the edge plate exposed out of the accommodating cavity and the rest part of the blade body.
Further, the clamp generally comprises a support rod for inserting into the vacuum spraying equipment, and a clamp head connected to the top end of the support rod; the clamp head is internally provided with an accommodating cavity, and the top of the clamp head is provided with a first penetrating hole; the protective cover is covered downwards on the clamp head from the top of the clamp head.
Furthermore, the clamp head is square and comprises a connecting bottom plate, two fixed side plates and two mounting side plates, wherein the two fixed side plates and the two mounting side plates are vertically connected to the periphery of the connecting bottom plate; the connecting bottom plate is fixed with the top end of the supporting rod, the two fixed side plates are oppositely arranged along the length direction of the edge plate and are respectively fixed with the connecting bottom plate, and the two mounting side plates are oppositely arranged along the width direction of the edge plate and are respectively detachably connected with the fixed side plates; the connecting bottom plate, the two fixed side plates and the two mounting side plates enclose an accommodating cavity, and a first penetrating opening is formed at the top end opening of the clamp head; the locating pin is connected on the inside wall of installation curb plate.
Furthermore, the face of the fixed side plate, which is in contact with the long side edge of the flange plate, is a limit curved face attached to the long side edge so as to seal a gap between the fixed side plate and the flange plate and clamp the flange plate relatively along the length direction of the flange plate.
Furthermore, an outward convex supporting flange is arranged on the inner side wall of the mounting side plate, and a supporting step matched with a step opening on the short side edge of the flange plate is arranged on the supporting flange; the flange plate is supported and positioned on the supporting flange through the matching of the step opening and the supporting step, and the short side edge abuts against the inner side wall of the corresponding mounting side plate so as to seal the gap between the mounting side plate and the flange plate.
Furthermore, two positioning pins are arranged on each mounting side plate and are arranged side by side at intervals; the fixed ends of the two positioning pins are respectively fixed with the inner side wall of the mounting side plate, and the free ends of the two positioning pins are respectively inserted into the two mortises close to the flange plate from the end parts of the tenons along the extending direction of the mortises.
Furthermore, the protective cover is in a hollow cylinder shape, the bottom end of the protective cover is opened, and the protective cover is used for covering the clamp head from the opening end of the clamp head; the top end of the protective cover is provided with a second penetrating opening through which the blade tip of the blade body penetrates and exposes, and the second penetrating opening is in sealing contact with the periphery of the blade body so as to seal the inner cavity of the protective cover.
Furthermore, the protective cover comprises four outer cover side plates for enclosing the body part of the protective cover and an outer cover top plate connected to the top ends of the four outer cover side plates; the outer side walls of the two mounting side plates are both formed into limiting bayonets by downwards cutting the top ends; two oppositely arranged outer cover side plates are folded inwards to form a limiting step matched with the limiting bayonet so as to guide and limit the protective cover covered into the clamp head; the top plate of the outer cover is provided with a second penetrating opening.
Furthermore, the thickness of the top plate of the outer cover is 2-5 mm, so that the top plate is used for sealing and protecting the blade body in the blade tip spraying process.
Further, the second penetrating port comprises an inner step port, a middle step port and an outer step port which are sequentially arranged from inside to outside and are communicated; the cross section shape of the outer step opening is matched with that of the blade body; the cross-sectional shapes of the middle step opening and the inner step opening are the same as the cross-sectional shape of the blade body, the outer diameter of the middle step opening is larger than that of the outer step opening, and the outer diameter of the inner step opening is larger than that of the middle step opening, so that interference between the middle step opening and the blade body in the process of covering the protective cover is avoided.
The invention has the following beneficial effects:
in the practical application process, the protective coating is mainly sprayed on the surface parts of the blade tips, the blade bodies and the edge plates in the spraying procedure, for improving the heat resistance of the working blade, because the powder sprayed by the vacuum spraying equipment has large area, therefore, the non-spraying areas on the working blade are protected only by respectively spraying the coatings on the surface areas of the blade tip, the blade body and the edge plate, and as can be seen from the figure, the blade body of the working blade is a space knob molded surface, and the long side of the edge plate has different angle surfaces formed by a plurality of direction surfaces, so the difficulty of blade clamping and positioning is high, a new clamping protection mode needs to be adopted, and the tighter and more stable protection to the non-spraying area is realized, based on the difficulty, the clamp adopts the design that the peripheral side surface of the edge plate is used as a joint support surface, so that the periphery of the edge plate is in sealing contact with the first through hole, the problem that spraying powder splashes to a non-spraying area of the blade due to poor sealing of the existing clamp is solved; secondly, because the edge plate of the special-shaped blade is difficult to clamp and position, a plurality of special positioning pins are adopted to extend into the mortises for supporting and positioning, the special-shaped blade clamp belongs to profile modeling V-shaped positioning, the positioning operation is very simple, the support of the working blade is stable, the positioning is reliable, the positioning precision is high, and the processing efficiency and the spraying quality are improved for the surface spraying of the blade; and finally, the blade body is sealed and protected by the easily detachable protective cover, the overall structure of the clamp is simplified, and the blade body and the edge plate are effectively prevented from being damaged during blade tip spraying.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of the spatial structure of a rotor blade to be painted;
FIG. 2 is a front view of the vacuum coating protection fixture for the blade according to the preferred embodiment of the present invention;
FIG. 3 is a schematic sectional view taken along line A-A in FIG. 2;
FIG. 4 is a schematic view of a portion of the chuck head of FIG. 2;
FIG. 5 is a front view of the mounting side plate of FIG. 2;
FIG. 6 is a front view of the shield of FIG. 2;
fig. 7 is a schematic cross-sectional structure of fig. 6.
Description of the figures
10. A working blade; 11. a tenon; 111. mortises; 12. a flange plate; 13. a leaf body; 20. a strut; 30. a clamp head; 301. an accommodating cavity; 302. a first through hole; 31. fixing the side plate; 311. a limiting curved surface; 32. installing a side plate; 321. a support flange; 322. a limiting bayonet; 40. positioning pins; 50. a protective cover; 501. a second through hole; 51. a housing side plate; 52. and a housing top plate.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the accompanying drawings, but the invention can be embodied in many different forms, which are defined and covered by the following description.
Referring to fig. 2 and 3, a preferred embodiment of the present invention provides a blade vacuum spray coating protection jig including: the fixture assembly is used for being connected with vacuum spraying equipment, the fixture assembly is internally provided with an accommodating cavity 301 for accommodating a tenon 11 of a working blade 10 to be sprayed, the outer wall of the fixture assembly is provided with a first penetrating hole 302 for exposing a flange plate 12 and a blade body 13 of the working blade 10, and the first penetrating hole 302 is communicated with the accommodating cavity 301. The positioning pin 40 is disposed in the accommodating cavity 301, and the positioning pin 40 is used for extending into the mortise 111 from the end face of the tenon 11 to support and position the working blade 10. The first through hole 302 is in sealing contact with the periphery of the flange 12 supported and positioned on the positioning pin 40 to clamp and position the flange 12 along the circumferential direction, and cooperates with the flange 12 to seal the accommodating cavity 301. The overall fixture is covered by a protective cover 50, and the protective cover 50 is used for exposing the blade tip of the blade body 13 for vacuum spraying and sealing and covering the edge plate 12 exposed out of the accommodating cavity 301 and the rest part of the blade body 13.
When the blade vacuum spraying protection clamp is used, firstly, the working blade 10 needs to be fixed: using the overall cleaning fixture and the protective cover 50 before use, then inserting the working blade 10 into the accommodating cavity 301 along the extending direction of the mortise, so that the positioning pin 40 is inserted into the mortise 111 from the end face of the tenon 11 to support and position the working blade 10, and the periphery of the flange plate 12 is in sealing contact with the first through hole 302; secondly, the working blade 10 is protected: after the working blade 10 is supported and fixed on the clamp assembly, the protective cover 50 is sleeved on the clamp assembly in the blade body spiral direction, as shown in fig. 2, and the blade tip of the working blade 10 is exposed out of the protective cover by 0.5 mm-1 mm, so that the blade tip is convenient to spray; and finally, spraying the upper surfaces of the blade tips, the blade bodies 13 and the edge plates 12: after the working blade 10 is clamped and fixed, the vacuum spraying protection clamp for the blade is fixed on a rotating table of vacuum spraying equipment, spraying is started to be prepared, the blade tip of the blade body 13 is firstly sprayed, then the protective cover 50 is taken down, then the upper surfaces of the blade body 13 and the flange plate 12 are sprayed, after the spraying is finished, spraying materials exist on the outer surfaces of the working blade 10 and the clamp, after the blade is cooled, the working blade 10 and the clamp are taken down from the rotating table together, the whole clamp is disassembled, the working blade 10 is taken out, and finally an operator needs to clean the spraying materials on the clamp for the next use.
In the practical application process, the protective coating is mainly sprayed on the surface parts of the blade tips, the blade bodies and the edge plates in the spraying procedure, for improving the heat resistance of the working blade, because the powder sprayed by the vacuum spraying equipment has large area, therefore, in order to protect the non-sprayed areas of the rotor blade by simply spraying the coating on the tip, body and platform surface areas, respectively, as can be seen from fig. 1, the body of the rotor blade 10 is a space knob profile, and the long side of the edge plate 12 has different angle surfaces formed by a plurality of direction surfaces, so the difficulty of blade clamping and positioning is large, a new clamping protection mode needs to be adopted, and the tighter and more stable protection to the non-spraying area is realized, based on the difficulty, the clamp adopts the design that the peripheral side surface of the edge plate 12 is used as a joint support surface, so that the periphery of the edge plate 12 is in sealed contact with the first penetrating opening 302, the problem that spraying powder splashes to a non-spraying area of the blade due to poor sealing of the existing clamp is solved; secondly, because the edge plate of the special-shaped blade is difficult to clamp and position, in the clamp, a plurality of special positioning pins 40 are adopted to extend into the mortises for supporting and positioning, the clamp belongs to profile modeling V-shaped positioning, the positioning operation is very simple, the support of the working blade is stable, the positioning is reliable, the positioning precision is high, and the processing efficiency and the spraying quality are improved for the surface spraying of the blade; and finally, the blade body 13 is sealed and protected by the easily-detachable protective cover 50, the overall structure of the clamp is simplified, and the blade body and the edge plate are effectively prevented from being damaged during blade tip spraying.
Alternatively, as shown in fig. 2, the jig generally includes a stem 20 for insertion into the vacuum spraying apparatus, and a jig head 30 attached to the top end of the stem 20. In actual use, the lower end of the strut 20 is inserted into the base of the vacuum spraying apparatus. The fixture head 30 is provided with an accommodating cavity 301 therein, and the top of the fixture head 30 is provided with a first through hole 302. The protective cover 50 is covered downward from the top of the clamp head 30 on the clamp head 30.
In this alternative, as shown in fig. 2 and 3, the jig head 30 is square, and includes a connection base plate, and two fixing side plates 31 and two mounting side plates 32 vertically connected to the outer periphery of the connection base plate. The connecting bottom plate is fixed with the top end of the supporting rod 20, the two fixed side plates 31 are arranged oppositely along the length direction of the flange plate 12 and are fixed with the connecting bottom plate respectively, and the two installation side plates 32 are arranged oppositely along the width direction of the flange plate 12 and are detachably connected with the fixed side plates 31 respectively. In this alternative embodiment, the mounting side plate 32 is detachably connected to the fixing side plate 31 by fastening screws. The connecting bottom plate, the two fixed side plates 31 and the two mounting side plates 32 enclose an accommodating cavity 301, and the top end opening of the clamp head 30 forms a first penetrating opening 302. The positioning pins 40 are attached to the inside walls of the mounting side plates 32. The fixture head 30 has a simple structure, is easy to manufacture, disassemble and assemble, and the working blade 10 is easy to clamp and disassemble, so that the spraying operation is simple.
In this alternative, as shown in fig. 4, the surface of the fixed side plate 31 contacting the long side edge of the platform 12 is a limit curved surface 311 attached to the long side edge to seal the gap between the fixed side plate 31 and the platform 12 and clamp the platform 12 relatively along the length direction of the platform 12. When the two fixed side plates 31 are used for assisting in clamping the working blade 10, the blade is positioned and sealed by the attachment of the upper limit curved surface 311 and the long side edge of the flange plate 12, so that the sprayed powder is prevented from entering the accommodating cavity 301 through the gap between the long side edge of the flange plate 12 and the fixed side plates 31, and the tenon in a non-spraying area is effectively protected.
In this alternative, as shown in fig. 5, a convex support flange 321 is provided on the inner side wall of the mounting side plate 32, and a support step matching with the step opening of the short side of the flange 12 is provided on the support flange 321. The flange 12 is supported and positioned on the supporting flange 321 through the matching of the step opening and the supporting step, and the short side edge abuts against the inner side wall of the corresponding mounting side plate 32, so as to seal the gap between the mounting side plate 32 and the flange 12. The two supporting flanges 321 are used for assisting in supporting and positioning the working blade 10, and meanwhile, through the abutting sealing between the mounting side plate 32 and the short side of the flange plate 12, the sprayed powder is prevented from entering the accommodating cavity 301 through the gap between the short side of the flange plate 12 and the mounting side plate 32, and thus the tenon of the non-spraying area is effectively protected.
In this alternative, as shown in fig. 2 and 3, two positioning pins 40 are provided on each mounting side plate 32, and the two positioning pins 40 are arranged side by side at intervals. The fixed ends of the two positioning pins 40 are respectively fixed with the inner side wall of the mounting side plate 32, and the free ends of the two positioning pins 40 are respectively inserted into the two mortises 111 abutting against the flange 12 from the end part of the tenon 11 along the extending direction of the mortises 111. In the scheme of the invention, only two positioning pins 40 which are arranged side by side at intervals are arranged on each mounting side plate 32, and the two positioning pins 40 are used for respectively inserting the end parts of the tenons 11 into the two mortises 111 which are tightly close to the edge plate 12, so that on one hand, the stable support of the working blade 10 is realized through the four positioning pins 40, and the unstable support or the deviation of the support caused by the inaccurate position of each positioning pin 40 due to too many positioning pins is prevented; on the other hand, the number of the positioning pins 40 is small, the processing difficulty is reduced, and meanwhile, the matching support of the four positioning pins 40 is more accurate and simpler than the matching of more positioning pins.
Alternatively, as shown in fig. 6 and 7, the protective cap 50 has a hollow cylindrical shape, the bottom end of which is open, for capping the jig head 30 with the open end of the jig head 30. The top of the protection cover 50 is provided with a second penetrating opening 501 for the blade tip of the blade body 13 to penetrate through and expose, the second penetrating opening 501 is in sealing contact with the periphery of the blade body 13 to seal the inner cavity of the protection cover 50, and the blade body and the edge plate which belong to a non-spraying area are prevented from being sprayed when the blade tip is sprayed.
In this alternative, as shown in fig. 6 and 7, the protection cover 50 includes four cover side plates 51 for enclosing a body portion of the protection cover 50, and a cover top plate 52 connected to top ends of the four cover side plates 51. The protective cover 50 is simple in structure and easy to manufacture. Referring to fig. 2, the outer side walls of the two mounting side plates 32 are both formed with a limiting bayonet 322 by cutting the top end downwards. The two oppositely arranged outer cover side plates 51 are folded inwards to form a limiting step matched with the limiting bayonet 322 so as to guide and limit the clamp head 30 covered by the protective cover 50. The outer cover side plate 51 is folded inwards to form a limiting step, so that the outer cover side plate 51 is simple in structure and easy to process, the integral structural strength and the covering stability of the protective cover 50 are enhanced through inward folding, and meanwhile, the protective cover 50 is light in weight and convenient to move; and two relative dustcoat curb plates 51 infolding form spacing step to support with spacing bayonet 322 on the installation curb plate 32, and then cover into the process of anchor clamps head 30 to the safety cover 50 and realize the direction when, still advance the degree of depth to the cover of safety cover 50 and carry on spacingly, the cover of the safety cover 50 of being convenient for is gone into and is torn open out, avoids interfering with blade body 13 simultaneously. The outer cover top plate 52 is provided with a second through hole 501.
In the preferred embodiment, as shown in fig. 7, the thickness of the top plate 52 of the outer cover is 2mm to 5mm for sealing and protecting the blade body 13 during the spraying process of the blade tip. By increasing the thickness of the top plate 52 of the outer cover, the blade body and the protective cover 50 are effectively prevented from being damaged by high temperature during spraying of the blade tip, and the service life of the protective cover 50 is prolonged.
In the preferred embodiment, as shown in fig. 7, the second through hole 501 includes an inner step hole, an intermediate step hole, and an outer step hole, which are sequentially formed and communicated from inside to outside. The cross-sectional shape of outer step mouth matches with the cross-sectional shape of blade 13, and then effectively seals the protection to the blade, prevents that spraying powder from getting into safety cover 50 and damaging blade and frid surface. The cross-sectional shapes of the middle step opening and the inner step opening are the same as the cross-sectional shape of the blade body 13, the outer diameter of the middle step opening is larger than that of the outer step opening, and the outer diameter of the inner step opening is larger than that of the middle step opening, so that interference with the blade body 13 in the process of covering the protection cover 50 is avoided. In practical application, since the blade body 13 is spiral, the blade body part except the blade tip is protected during spraying, so that the protective cover 50 needs to be designed into a step shape along the thickness direction of the blade profile, that is, the second through hole 501 comprises an inner step opening, a middle step opening and an outer step opening which are sequentially arranged from inside to outside and are communicated with each other, thereby not only solving the problem of interference between the blade body and the clamp caused by the spiral of the blade body, but also facilitating the processing of the clamp.
The specific clamping process of the working blade 10 in the invention is as follows: firstly, the rotor blade 10 is to be fixed: cleaning the fixture head 30 and the protective cover 50 before use, then inserting the working blade 10 into the accommodating cavity 301 along the extending direction of the mortise, enabling the periphery of the flange plate 12 to be in sealing contact with the first penetrating hole 302, then aligning the two mounting side plates 32 to the side surfaces of the fixture head covered by the fixture head, screwing the fixing nails on the side surfaces, and then fixing the working blade 10; secondly, the working blade 10 is protected: after the working blade 10 is supported and fixed on the clamp assembly, the protective cover 50 is sleeved on the clamp assembly in the blade spiral direction, as shown in fig. 2, and the blade tip of the working blade 10 is exposed out of the protective cover by 0.5 mm-1 mm, so that the blade tip can be conveniently sprayed. When the clamp is designed, UG three-dimensional design and motion simulation are adopted to simulate the clamping process of the blade, and the structure of the clamp head 30 and the structure of the protective cover 50 are designed, so that the clamp is convenient to clamp and disassemble.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a blade vacuum spraying protection anchor clamps which characterized in that includes:
the fixture assembly is used for being connected with vacuum spraying equipment, an accommodating cavity (301) for accommodating a tenon (11) of a working blade (10) to be sprayed is arranged in the fixture assembly, a first penetrating opening (302) for exposing a flange plate (12) and a blade body (13) of the working blade (10) is formed in the outer wall of the fixture assembly, and the first penetrating opening (302) is communicated with the accommodating cavity (301);
a positioning pin (40) is arranged in the accommodating cavity (301), and the positioning pin (40) is used for extending into the mortise (111) from the end face of the tenon (11) so as to support and position the working blade (10);
the first through hole (302) is in sealing contact with the periphery of the flange plate (12) supported and positioned on the positioning pin (40) so as to clamp and position the flange plate (12) along the circumferential direction, and the first through hole and the flange plate (12) cooperate to seal the accommodating cavity (301);
the clamp body is provided with a protective cover (50) in a covering mode, the protective cover (50) is used for enabling the blade tips of the blade body (13) to be exposed for vacuum spraying, and the edge plate (12) exposed out of the accommodating cavity (301) and the rest part of the blade body (13) are covered in a sealing mode;
the clamp generally comprises a support rod (20) used for being inserted into the vacuum spraying equipment and a clamp head (30) connected to the top end of the support rod (20);
the clamp head (30) is square and comprises a connecting bottom plate, two fixed side plates (31) and two mounting side plates (32), wherein the two fixed side plates are vertically connected to the periphery of the connecting bottom plate; the connecting bottom plate is fixed with the top end of the supporting rod (20), the two fixed side plates (31) are oppositely arranged along the length direction of the edge plate (12) and are respectively fixed with the connecting bottom plate, and the two mounting side plates (32) are oppositely arranged along the width direction of the edge plate (12) and are respectively detachably connected with the fixed side plates (31); the connecting bottom plate, the two fixed side plates (31) and the two mounting side plates (32) enclose an accommodating cavity (301), and a first penetrating opening (302) is formed at the top end opening of the clamp head (30); the positioning pin (40) is connected to the inner side wall of the mounting side plate (32);
two positioning pins (40) are arranged on each mounting side plate (32), and the two positioning pins (40) are arranged side by side at intervals; the fixed ends of the two positioning pins (40) are respectively fixed with the inner side wall of the mounting side plate (32), and the free ends of the two positioning pins (40) are respectively inserted into the two mortises (111) abutting against the flange plate (12) from the end part of the tenon (11) along the extending direction of the mortises (111).
2. The blade vacuum coating protection fixture of claim 1,
the holding cavity (301) is arranged in the clamp head (30), and the first penetrating opening (302) is formed in the top of the clamp head (30);
the protective cover (50) is covered downwards from the top of the clamp head (30) and arranged on the clamp head (30).
3. The blade vacuum coating protection fixture of claim 1,
the face that is used for on fixed curb plate (31) with the long side contact of listrium (12) be with spacing curved surface (311) of long side laminating to seal fixed curb plate (31) with clearance between listrium (12), and follow the length direction of listrium (12) presss from both sides tightly relatively listrium (12).
4. The blade vacuum coating protection fixture of claim 1,
a convex supporting flange (321) is arranged on the inner side wall of the mounting side plate (32), and a supporting step matched with a step opening on the short side of the flange plate (12) is arranged on the supporting flange (321);
the flange plate (12) is supported and positioned on the supporting flange (321) through the step opening of the flange plate and the matching of the supporting step, and the short side edge abuts against the corresponding inner side wall of the installation side plate (32) so as to seal the gap between the installation side plate (32) and the flange plate (12).
5. The blade vacuum coating protection fixture of claim 1,
the protective cover (50) is in a hollow cylinder shape, the bottom end of the protective cover is opened, and the protective cover is used for covering the clamp head (30) from the opening end of the clamp head (30);
the confession has been seted up on the top of safety cover (50) the apex of blade body (13) wears to establish exposed second and wears to establish mouth (501), the second wear to establish mouth (501) with the periphery sealing contact of blade body (13) is in order to seal the inner chamber of safety cover (50).
6. The blade vacuum coating protection fixture of claim 5,
the protective cover (50) comprises four outer cover side plates (51) used for enclosing a body part of the protective cover (50) and an outer cover top plate (52) connected to the top ends of the four outer cover side plates (51);
the outer side walls of the two mounting side plates (32) are both formed into limiting bayonets (322) by downwards cutting the top ends;
the two oppositely arranged outer cover side plates (51) are folded inwards to form limiting steps matched with the limiting bayonets (322) so as to guide and limit the clamp head (30) covered by the protective cover (50);
the outer cover top plate (52) is provided with the second penetrating opening (501).
7. The blade vacuum coating protection fixture of claim 6,
the thickness of the outer cover top plate (52) is 2-5 mm, and the outer cover top plate is used for sealing and protecting the blade body (13) in the blade tip spraying process.
8. The blade vacuum coating protection fixture of claim 7,
the second penetrating port (501) comprises an inner step port, a middle step port and an outer step port which are sequentially arranged from inside to outside and are communicated;
the cross-sectional shape of the outer step opening is matched with that of the blade body (13);
middle step mouth with interior step mouth both cross sectional shape all with the cross sectional shape of blade (13) is the same, just the external diameter size of middle step mouth is greater than the external diameter size of outer step mouth, the external diameter size of interior step mouth is greater than the external diameter size of middle step mouth to avoid the cover to establish the in-process of safety cover (50) with blade (13) interfere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110317952.6A CN113210160B (en) | 2021-03-25 | 2021-03-25 | Blade vacuum spraying protection clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110317952.6A CN113210160B (en) | 2021-03-25 | 2021-03-25 | Blade vacuum spraying protection clamp |
Publications (2)
| Publication Number | Publication Date |
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| CN113210160B true CN113210160B (en) | 2022-09-16 |
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| CN114295501A (en) * | 2021-12-22 | 2022-04-08 | 苏州长菱测试技术有限公司 | Device for positioning on blade body of blade and marking method thereof |
| CN114405715B (en) * | 2021-12-28 | 2023-08-18 | 东方电气集团东方汽轮机有限公司 | Clamping tool for spraying hollow blade of gas turbine |
Citations (4)
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|---|---|---|---|---|
| EP1808269A1 (en) * | 2006-01-17 | 2007-07-18 | Siemens Aktiengesellschaft | Holding device for a turbine blade |
| CN105289881A (en) * | 2015-12-03 | 2016-02-03 | 中国南方航空工业(集团)有限公司 | Spraying protection clamp for turbine blades |
| CN206127408U (en) * | 2016-09-30 | 2017-04-26 | 中国南方航空工业(集团)有限公司 | A protecting clap utensil and vacuum coating equipment for turbine blade vacuum coating |
| CN107138325A (en) * | 2017-06-02 | 2017-09-08 | 中国航发南方工业有限公司 | Blade sprays Protecting clamping apparatus |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2181775B1 (en) * | 2008-11-04 | 2012-09-12 | Siemens Aktiengesellschaft | Holder for large components with improved spray protection |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1808269A1 (en) * | 2006-01-17 | 2007-07-18 | Siemens Aktiengesellschaft | Holding device for a turbine blade |
| CN105289881A (en) * | 2015-12-03 | 2016-02-03 | 中国南方航空工业(集团)有限公司 | Spraying protection clamp for turbine blades |
| CN206127408U (en) * | 2016-09-30 | 2017-04-26 | 中国南方航空工业(集团)有限公司 | A protecting clap utensil and vacuum coating equipment for turbine blade vacuum coating |
| CN107138325A (en) * | 2017-06-02 | 2017-09-08 | 中国航发南方工业有限公司 | Blade sprays Protecting clamping apparatus |
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