CN114226102B - Spraying clamping tool and technology for blade disc - Google Patents
Spraying clamping tool and technology for blade disc Download PDFInfo
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- CN114226102B CN114226102B CN202111307310.4A CN202111307310A CN114226102B CN 114226102 B CN114226102 B CN 114226102B CN 202111307310 A CN202111307310 A CN 202111307310A CN 114226102 B CN114226102 B CN 114226102B
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- impeller
- blade disc
- mounting frame
- spraying
- disc
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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
- B05B13/0285—Stands for supporting individual articles to be sprayed, e.g. doors, vehicle body parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/32—Processes for applying liquids or other fluent materials using means for protecting parts of a surface not to be coated, e.g. using stencils, resists
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/007—After-treatment
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Load-Engaging Elements For Cranes (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention belongs to the technical field of aeroengines, and particularly relates to a spraying clamping tool and a spraying process of a blade disc. The invention can stably clamp the blade wheel to carry out rotary spraying, and ensure the spraying quality.
Description
Technical Field
The invention belongs to the technical field of aeroengines, and particularly relates to a spraying clamping tool and a spraying clamping process for a blade disc.
Background
With the development of aeroengines, the requirements on the service life of the engines are higher and higher, and the requirements on the corrosion resistance of the surfaces of the blade discs of the air compressors serving as core parts of the engines are higher and higher.
Because aluminum is lower than iron in an electrochemical corrosion prevention system, aluminum can be used for preventing iron corrosion, and at present, inorganic aluminum spraying is mainly carried out on the bottom layer and the surface layer of the blade disc so as to improve the corrosion resistance of the blade disc. However, the inorganic aluminum coating has higher requirements on appearance, roughness and thickness, and the traditional manual spraying has the problems of low spraying efficiency, poor quality stability and the like, and seriously affects the performance of the aeroengine. Therefore, an automatic spraying process is often adopted, however, in the automatic spraying process, how to clamp the blade disc, so that the blade disc can be kept stable in the process of rotary spraying, and the shielding of the clamping tool on the spraying surface is minimum, so that an anticorrosive coating with stable quality is formed on the blade disc, which is a problem to be solved urgently.
Although the automatic spraying support protection clamp for the turbine guide blade disclosed in the Chinese patent CN104874509B can clamp the blade to carry out coating spraying, the clamp is not suitable for clamping a blade disc, and excessive shielding is caused to the blade during clamping, so that the spraying is affected.
Disclosure of Invention
The invention aims to overcome at least one defect in the prior art, and provides a spraying clamping tool and a spraying clamping process for a blade disc, which can clamp the blade disc and ensure that the blade disc is stable, and the clamping surface and the shielding surface are smaller, so that the spraying of the blade disc is not influenced.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a spraying centre gripping frock of blade dish, including clamping frock and spraying frock, clamping frock includes annular installing frame and a plurality of ejector pins that distribute along installing frame circumference, ejector pin one end wears to locate on the installing frame, the other end is for being used for the free end of butt in blade dish periphery, the axial lead of ejector pin is parallel with the plane that installing frame is located, the spraying frock includes first bottom plate and a plurality of bracing pieces of one end connection on first bottom plate, the other end and the installing frame of bracing piece can dismantle and be connected, a plurality of bracing pieces distribute in the one side of first bottom plate and axial lead perpendicular to first bottom plate place plane along circumference.
The scheme can be applied to clamping the blade disc of the aeroengine, the blade disc comprises an impeller and blades which are circumferentially distributed on the periphery of the impeller, when the blade disc is used, the blade disc is abutted against the periphery of the impeller from all directions through a plurality of ejector rods, so that the blade disc is tightly clamped, the connection stability of the blade disc and a mounting frame is ensured, the rotation of the blade disc in the spraying process is avoided, the blade disc is separated from the mounting frame, and the ejector rods are directly abutted against the impeller and cannot damage the blade disc; in addition, because the ejector rods are distributed along the circumferential direction of the mounting frame, and the mounting frame is connected to the supporting rods, the shielding area of the ejector rods on the blades can be greatly reduced, and therefore the spraying efficiency is improved.
As a further improved structural form, the free end of the ejector rod, which is close to the center of the installation frame, is provided with a limiting structure for circumferentially limiting the blade disc, one side, which is far away from the ejector rod, of the limiting structure is provided with a semi-cylindrical recess for being abutted to the blade disc, and the rotation center line of the semi-cylindrical recess is parallel to the axial lead of the installation frame.
As a further improved structural form, the mounting frame is provided with a threaded hole with the axial lead along the radial direction, and the ejector rod is provided with external threads, penetrates through the threaded hole and is in threaded connection with the threaded hole.
As a further improved structural form, the axial lead of the ejector rod is coincident with the radial line of the mounting frame, and the ejector rods are uniformly distributed along the circumferential direction of the mounting frame.
As a further improved structural form, the blade disc centering device further comprises a positioning jig for centering the blade disc, and the positioning jig can be detachably connected with the mounting frame.
As a further improved structural form, the positioning jig comprises a second bottom plate, a mandrel which is arranged on the second bottom plate and can center the blade disc, and a plurality of mounting support rods which are circumferentially distributed on the second bottom plate, wherein the axial lead of each mounting support rod is perpendicular to the plane where the second bottom plate is located, the mounting support rods can be detachably connected with a mounting frame, the axial lead of the mandrel is coincident with the axial lead of the mounting frame, and the mandrel can be inserted into the inner ring of the impeller and is tightly matched with the inner ring of the impeller during use.
The spraying process applying the spraying clamping tool comprises the following steps of:
s1: shielding and protecting the non-spraying area and the impeller inner ring;
s2: inserting a plurality of ejector rods into the mounting frame and abutting against the periphery of the impeller of the blade disc, so that the plurality of ejector rods clamp the blade disc and connect the mounting frame with the support rods on the first bottom plate;
s3: spraying the blades and the flow channels of the blade disc downwards from the upper part of the blade disc;
s4: the installation frame and the blade disc are integrally turned over and then are installed on the supporting rods, and the blades and the flow channels of the blade disc are sprayed from the upper part of the blade disc downwards again so as to form a first coating on the surfaces of the blades and the flow channels;
s5: placing the spraying clamping tool and the blade disc integrally into a curing furnace for a first set time, curing the first coating, and then taking out integrally;
s6: disassembling the mounting frame from the supporting rod, disassembling the blade disc from the mounting frame, shielding and protecting the blades and the runner, and repeating the step S2;
s7: carrying out thermal spraying on the impeller inner ring and the impeller end face downwards from the upper part of the impeller disc, then integrally overturning the mounting frame and the impeller disc, then mounting on the supporting rod, and carrying out thermal spraying on the impeller inner ring and the impeller end face of the impeller disc again from the upper part of the impeller disc downwards so as to form a second coating on the impeller inner ring and the impeller end face;
s8: and (3) integrally placing the spraying clamping tool and the blade disc into a curing furnace for a second set time, curing the second coating, and then integrally taking out to obtain the blade disc after spraying.
Preferably, before the plurality of ejector pins are inserted into the mounting frame and abutted against the periphery of the impeller disc in the step S2, the method further comprises the steps of: connecting the positioning jig with the mounting frame; tightly inserting the blade disc into a mandrel on the positioning jig; in step S2, after the plurality of ejector pins are inserted into the mounting frame and abutted against the periphery of the impeller disc, the method further comprises the steps of: and disassembling the positioning jig from the mounting frame and the impeller inner ring.
Preferably, before step S2 is started, the blades and the runner are blown with sand.
Compared with the prior art, the beneficial effects are that:
according to the invention, on one hand, the spraying clamping tool can stably clamp the blade disc, so that the blade disc can stably rotate in the rotary spraying process without falling off or sliding from the clamping spraying clamping tool, and a relatively uniform coating is formed on the blade disc, and the quality of the surface coating of the blade disc is improved; on the other hand, the blade disc is clamped by using the clamping tool in the spraying process, one end of the blade disc is sprayed firstly, then the clamping tool and the whole blade disc are turned over and sprayed again, so that a first coating is formed on the blade and the runner, and then the inner ring and the end face of the impeller are subjected to thermal spraying, so that the wear resistance of the inner ring and the end face coating of the impeller is ensured, the coating is prevented from being worn due to friction in the using process, and the service life of the impeller is ensured.
Drawings
FIG. 1 is an exploded view of a spray clamping tool for a bladed disk of embodiment 1 of the present invention;
FIG. 2 is a reverse exploded view of the spray clamping tooling of the bladed disk of embodiment 1 of the present invention;
FIG. 3 is a schematic structural view of a spraying tool of the spraying clamping tool of the blade disc of embodiment 1 of the present invention;
fig. 4 is a schematic diagram of connection between a clamping tool and a positioning tool of a spraying clamping tool of a blade disc in embodiment 1 of the present invention and a blade wheel;
fig. 5 is a schematic diagram of the overall structure of a positioning jig of a spraying clamping tool for a blade disc according to embodiment 1 of the present invention;
FIG. 6 is a schematic diagram of the connection of a blade wheel of a spraying clamping fixture and a clamping fixture for a blade disc according to embodiment 1 of the present invention;
fig. 7 is a schematic diagram of a mandrel structure of a spraying clamping tool for a blade disc according to embodiment 1 of the present invention;
fig. 8 is a flow chart of the spraying process of embodiment 2 of the present invention.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the invention; for the purpose of better illustrating the embodiments, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the actual product dimensions; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationship described in the drawings are for illustrative purposes only and are not to be construed as limiting the invention.
The same or similar reference numbers in the drawings of embodiments of the invention correspond to the same or similar components; in the description of the present invention, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc., based on the azimuth or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus terms describing the positional relationship in the drawings are merely illustrative and should not be construed as limitations of the present patent, and specific meanings of the terms described above may be understood by those skilled in the art according to specific circumstances.
Example 1:
as shown in fig. 1 to 7, a spraying clamping fixture for a blade disc comprises a clamping fixture 200 and a spraying fixture 300, wherein the clamping fixture 200 comprises a closed annular mounting frame 201 and three ejector rods 202 circumferentially distributed along the mounting frame 201, when in use, the blade disc 100 is arranged on the inner side of the mounting frame 201, one end of each ejector rod 202 is arranged on the mounting frame 201 in a penetrating manner, the other end of each ejector rod is a free end abutting against the periphery of an impeller 101, the spraying fixture 300 comprises a first bottom plate 301 and three supporting rods 302, one ends of the three supporting rods 302 are connected to the first bottom plate 301, the three supporting rods 302 are circumferentially distributed on one surface of the first bottom plate 301, the axial lead of each supporting rod is perpendicular to the plane where the first bottom plate 301 is located, and the other ends of the supporting rods 302 are detachably connected with the mounting frame 201.
Wherein, the mounting frame 201 is provided with a limiting hole penetrating along the axial direction thereof, and the other end of the supporting rod 302 is inserted into the limiting hole to be spliced with the mounting frame 201.
It should be noted that, in the present embodiment, the number of the ejector pins 202 and the support rods 302 is three, which is only referred to, and is not to be construed as limiting the present embodiment, and the number of the ejector pins 202 may be increased or decreased as needed in a specific implementation process; preferably, the support bars 302 are evenly circumferentially distributed.
As shown in fig. 1 to 3, in addition, the spraying tool 300 in this embodiment further includes two limiting plates disposed parallel to the first bottom plate 301, and the supporting rod 302 is inserted into the limiting plates, so as to enhance stability of the supporting rod 302.
As shown in fig. 4 and 7, one end of the ejector rod 202 near the center of the mounting frame 201 in the present embodiment is provided with a limiting structure 2021 for circumferentially limiting the blade disc 100, one side of the limiting structure 2021 away from the ejector rod 202 is provided with a semi-cylindrical recess 2022 for abutting against the periphery of the impeller 101, and the rotation center line of the semi-cylindrical recess 2022 is used for parallel axis lines of the mounting frame 201. Specifically, the semi-cylindrical recess 2022 is matched with the peripheral shape of the impeller 101, so that the semi-cylindrical recess 2022 is tightly attached to the periphery of the impeller 101, the contact area between the limiting structure 2021 and the impeller 101 can be increased, the friction force between the limiting structure 2021 and the impeller 101 is increased, the impeller 101 can be radially limited better when the ejector rod 202 is subjected to radial pressure along the mounting frame 201, the impeller 101 can be circumferentially limited, and the relative rotation between the impeller disc 100 and the clamping tool 200 is avoided when the clamping tool 200 drives the impeller disc 100 to rotate, so that the spraying thickness of each position of the impeller disc 100 is effectively controlled.
As shown in fig. 4 and 7, the mounting frame 201 in this embodiment is provided with a threaded hole 2011 with an axial line along a radial direction thereof, the ejector rod 202 is provided with an external thread 2023, the ejector rod 202 penetrates through the threaded hole 2011 and is in threaded connection with the threaded hole, and one end of the ejector rod 202 away from the center of the mounting frame 201 extends out of the threaded hole 2011 and is provided with a rotating handle so as to rotate the ejector rod 202 more effort-saving. In this way, the ejector rod 202 can be driven to move on the plane where the mounting frame 201 is located by rotating the ejector rod 202, so that the gap between the limiting structure 2021 and the periphery of the impeller 101 is adjusted, the impeller 101 is convenient to mount, and meanwhile, the pressure of the limiting structure 2021 on the impeller 101 can be adjusted according to requirements, so that the impeller 101 with various specifications can be adapted.
In order to ensure that the blade disc 100 can stably rotate, the axial lead of the ejector rod 202 in the embodiment coincides with the radial line of the mounting frame 201, and the ejector rod 202 is uniformly distributed along the circumferential direction of the mounting frame 201, so that the ejector rod 202 can uniformly bear forces in all directions of the blade disc 100 when clamping the blade disc 100, and the blade disc 100 cannot easily shake when the clamping tool 200 drives the blade disc 100 to rotate.
The impeller 101 in this embodiment includes an upper ring 1011 and a lower ring 1012 distributed in the axial direction, the width of the upper ring 1011 is larger than that of the lower ring 1012, the vane 102 is mounted between the upper ring 1011 and the lower ring 1012, and the limit structure 2021 abuts against the outer periphery of the upper ring 1011. To ensure that the limiting structure 2021 has enough contact area with the impeller 101 and ensure the clamping force, so that the clamping tool 200 can stably clamp the blade disc 100. Wherein, the upper ring 1011 is forward mounted (see fig. 1) when moving away from the spraying tool 300, and the upper ring 1011 is reverse mounted (see fig. 2) when moving closer to the spraying tool 300.
As shown in fig. 4 and 5, the present embodiment further includes a positioning jig 400 for centering the blade disc 100, where the positioning jig 400 is detachably connected to the mounting frame 201 and the impeller 101. Specifically, the positioning jig 400 includes a second bottom plate 401, a mandrel 402 disposed on the second bottom plate 401, and three mounting struts 403 circumferentially and uniformly distributed on the second bottom plate 401, when in use, the mandrel 402 may be inserted into an inner ring of the impeller 101 and tightly matched to center the impeller disc 100, an axial lead of the mounting struts 403 is perpendicular to a plane of the second bottom plate 401, the mounting struts 403 may be detachably connected with the mounting frame 201, an axial lead of the mandrel 402 coincides with an axial lead of the mounting frame 201, when the impeller disc 100 is mounted, the mandrel 402 of the positioning jig 400 is utilized to radially limit the impeller 101, and the positioning jig 400 is connected with the mounting frame 201 through the mounting struts 403, so that the three ejector rods 202 may be sequentially rotated to abut against the periphery of the impeller 101, at this time, the impeller 101 and the mounting frame 201 may not be displaced in an abutting process, thereby ensuring stable clamping of the ejector rods 202 to the impeller disc 100. It should be noted that the number of the mounting struts 403 in this embodiment is merely referred to, and should not be construed as limiting the present embodiment, and may be increased or decreased as needed in the implementation.
In this embodiment, the plurality of ejector rods 202 are abutted against the periphery of the impeller 101 from all directions to tightly clamp the impeller 101, so as to ensure the connection stability of the blade disc 100 and the mounting frame 201, prevent the rotation of the blade disc 100 from falling off from the mounting frame 201 in the spraying process, and prevent the blade disc 100 from being damaged due to direct abutment of the ejector rods 202 against the impeller 101; in addition, since the ejector rods 202 are circumferentially distributed along the mounting frame 201, and the mounting frame 201 is connected to the support rods 302, the shielding area of the ejector rods 202 on the blade 102 can be greatly reduced, thereby improving the spraying efficiency.
Example 2
As shown in fig. 8, a spray coating process of the bladed disk of application example 1 includes the steps of:
s1: shielding protection is carried out on the non-spraying area and the inner ring of the impeller 101; specifically, the upper ring 1011, the lower ring 1012 and the inner ring of the impeller 101 are shielded and protected by using adhesive tapes;
s2: the blade disc 100 is positively mounted (i.e. the upper ring 1011 is above and the lower ring 1012 is below) inside the mounting frame 201, the plurality of ejector rods 202 are inserted into the mounting frame 201 and abutted against the periphery of the impeller 101 of the blade disc 100, so that the plurality of ejector rods 202 clamp the blade disc 100 and connect the mounting frame 201 with the support rods 302 on the first base plate 301;
s3: spraying the blades 102 of the blade disc 100 and the flow passages (the outer peripheral surfaces of the impellers 101 between two adjacent blades 102) from above the blade disc 100 downward;
s4: the mounting frame 201 and the blade disc 100 are integrally turned over, so that the lower ring 1012 is arranged above, and the upper ring 1011 is arranged below, namely, the blade disc 100 is reversely arranged and then is arranged on the supporting rod 302, and the blades 102 and the flow channels of the blade disc 100 are sprayed downwards from the upper side of the blade disc 100, so that a first coating is formed on the surfaces of the blades 102 and the flow channels;
s5: placing the spraying clamping tool and the blade disc 100 into a curing furnace integrally for a first set time, curing the first coating, and then taking out integrally;
s6: removing the mounting frame 201 from the support bar 302, removing the blade tray 100 from the mounting frame 201, shielding and protecting the blades 102 and the flow passage, and repeating step S2;
s7: performing thermal spraying on the inner ring of the impeller 101 and the end face of the impeller 101 from the upper side of the impeller 100 downwards, then integrally overturning the mounting frame 201 and the impeller 100, mounting on the supporting rod 302, and performing thermal spraying on the inner ring of the impeller 101 and the end face of the impeller 101 of the impeller 100 from the upper side of the impeller 100 downwards again to form a second coating on the inner ring of the impeller 101 and the end face of the impeller 101;
s8: and (3) integrally placing the spraying clamping tool and the blade disc 100 into a curing furnace for a second set time, curing the second coating, and then integrally taking out to obtain the blade disc 100 after spraying.
In order to facilitate clamping of the bladed disc 100 and further ensure concentricity of the bladed disc 100 and the clamping tool 200, to avoid shaking of the bladed disc 100 during rotation following the clamping tool 200, in step S2, before the plurality of ejector rods 202 are inserted into the mounting frame 201 and abutted against the periphery of the impeller 101 of the bladed disc 100, the method further comprises the following steps: connecting the positioning jig 400 with the mounting frame 201; tightly inserting the blade disc 100 into the mandrel 402 on the positioning jig 400; in step S2, after the plurality of ejector pins 202 are inserted into the mounting frame 201 and abutted against the outer periphery of the impeller 101 of the bladed disk 100, the steps of: the positioning jig 400 is detached from the mounting frame 201 and the inner ring of the impeller 101.
In this embodiment, before step S2 starts, sand is blown to the blade 102 and the runner, so that the surfaces of the blade 102 and the runner are rougher, so as to increase the adhesion area of the coating on the surfaces of the blade 102 and the runner, thereby improving the stability of the coating.
In this embodiment, the clamping tool 200 is used to clamp the blade disc 100, and the blade disc 100 is sprayed from one end of the blade disc 100, then the clamping tool 200 and the blade disc 100 are turned over integrally, and sprayed again, so as to form a first coating on the blade 102 and the runner, and then the inner ring and the end face of the impeller 101 are sprayed thermally, so that the wear resistance of the inner ring of the impeller 101 and the end face coating of the impeller 101 is ensured, the coating is prevented from being worn due to friction in the use process, and the service life of the impeller 101 is ensured.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
It is to be understood that the above examples of the present invention are provided by way of illustration only and not by way of limitation of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (6)
1. The utility model provides a spraying centre gripping frock of blade dish, its characterized in that includes clamping frock (200) and spraying frock (300), clamping frock (200) include annular installing frame (201) and along a plurality of ejector pins (202) of installing frame (201) circumference distribution, ejector pin (202) one end wears to locate on installing frame (201), and the other end is the free end that is used for the butt in the blade dish periphery, and the axial lead of ejector pin (202) is parallel with the plane that installing frame (201) is located, spraying frock (300) include first bottom plate (301) and a plurality of bracing pieces (302) that one end is connected on first bottom plate (301), and the other end and installing frame (201) of bracing piece (302) can dismantle to be connected, and a plurality of bracing pieces (302) circumference distribute in the one side of first bottom plate (301) and the axial lead is perpendicular to the plane that first bottom plate (301) is located;
a limiting structure (2021) for circumferentially limiting the blade disc is arranged at the free end, close to the center of the mounting frame (201), of the ejector rod (202);
one side of the limiting structure (2021) away from the ejector rod (202) is provided with a semi-cylindrical recess (2022) for abutting against the blade disc, and the rotation center line of the semi-cylindrical recess (2022) is parallel to the axis line of the mounting frame (201);
the positioning jig (400) is used for centering the blade disc, and the positioning jig (400) can be detachably connected with the mounting frame (201);
the positioning jig (400) comprises a second bottom plate (401), a mandrel (402) which is arranged on the second bottom plate (401) and can center the blade disc, and a plurality of mounting struts (403) which are circumferentially distributed on the second bottom plate (401), wherein the axial lead of each mounting strut (403) is perpendicular to the plane where the second bottom plate (401) is located, the mounting struts (403) can be detachably connected with the mounting frame (201), and the axial lead of the mandrel (402) coincides with the axial lead of the mounting frame (201).
2. The spraying clamping tool of the blade disc according to claim 1, wherein the mounting frame (201) is provided with a threaded hole (2011) with a shaft axis along the radial direction of the mounting frame, the ejector rod (202) is provided with external threads (2023), and the ejector rod (202) penetrates through the threaded hole (2011) and is in threaded connection with the threaded hole.
3. The spraying clamping tool of the blade disc according to claim 2, wherein the axial lead of the ejector rod (202) coincides with the radial line of the mounting frame (201), and the ejector rods (202) are uniformly distributed along the circumferential direction of the mounting frame (201).
4. A spraying process using the spraying clamping fixture of the blade disc as claimed in any one of claims 1 to 3, characterized by comprising the steps of:
s1: shielding and protecting the non-spraying area and the inner ring of the impeller (101);
s2: inserting a plurality of ejector rods (202) into the mounting frame (201) and abutting against the periphery of the impeller (101) of the blade disc (100), so that the plurality of ejector rods (202) clamp the blade disc (100), and connecting the mounting frame (201) with the support rods (302) on the first bottom plate (301);
s3: spraying the blades (102) and the flow channels of the blade disc (100) from the upper side of the blade disc (100) downwards;
s4: the installation frame (201) and the blade disc (100) are integrally turned over and then are installed on the supporting rod (302), and the blades (102) and the flow channels of the blade disc (100) are sprayed downwards from the upper part of the blade disc (100) to form a first coating on the surfaces of the blades (102) and the flow channels;
s5: the spraying clamping tool and the blade disc (100) are integrally placed into a curing furnace for a first set time, the first coating is cured, and then the whole is taken out;
s6: detaching the mounting frame (201) from the supporting rod (302), detaching the blade disc (100) from the mounting frame (201), shielding and protecting the blades (102) and the runner, and repeating the step S2;
s7: performing thermal spraying on the inner ring of the impeller (101) and the end surface of the impeller (101) from the upper side of the impeller disc (100) downwards, then integrally overturning the mounting frame (201) and the impeller disc (100), then mounting on the supporting rod (302), and performing thermal spraying on the inner ring of the impeller (101) and the end surface of the impeller (101) of the impeller disc (100) from the upper side of the impeller disc (100) downwards again to form a second coating on the inner ring of the impeller (101) and the end surface of the impeller (101);
s8: and (3) integrally placing the spraying clamping tool and the blade disc (100) into a curing furnace for a second set time, curing the second coating, and then integrally taking out to obtain the blade disc (100) with the sprayed coating.
5. The spraying process according to claim 4, wherein before the plurality of ejector pins (202) are inserted into the mounting frame (201) and abutted against the outer periphery of the impeller (101) of the blade disc (100) in step S2, further comprising the steps of: connecting the positioning jig (400) with the mounting frame (201); tightly inserting the blade disc (100) into a mandrel (402) on the positioning jig (400); in step S2, after a plurality of ejector pins (202) are inserted into the mounting frame (201) and are abutted against the periphery of the impeller (101) of the impeller disc (100), the method further comprises the following steps: the positioning jig (400) is detached from the mounting frame (201) and the inner ring of the impeller (101).
6. The spraying process according to claim 4 or 5, characterized in that before step S2 is started, the blade (102) and the runner are blown with sand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111307310.4A CN114226102B (en) | 2021-11-05 | 2021-11-05 | Spraying clamping tool and technology for blade disc |
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| DE102007026271A1 (en) * | 2007-06-05 | 2008-12-11 | Mtu Aero Engines Gmbh | Masking tapes and methods for coating and / or repairing components |
| CN204711616U (en) * | 2015-05-20 | 2015-10-21 | 智腾机械设备（上海）有限公司 | A kind of half-opened impeller processing tool |
| CN205763971U (en) * | 2016-05-27 | 2016-12-07 | 马鞍山市粤美金属制品科技实业有限公司 | A kind of multi-station tooling processing cylinder plane hole |
| CN207930560U (en) * | 2017-12-27 | 2018-10-02 | 中国航发南方工业有限公司 | Clamp for assembling between fan disk grade |
| CN110496754B (en) * | 2019-08-29 | 2024-05-28 | 东莞市德懋机电有限公司 | Dual-color processing method and processing jig for workpiece |
| CN213377361U (en) * | 2020-06-04 | 2021-06-08 | 宜昌至晟科技有限公司 | Spraying clamping tool for wind wheel blades |
| CN214211021U (en) * | 2020-12-01 | 2021-09-17 | 武汉协和齿环有限公司 | Molybdenum frock and system are spouted to synchronizer ring |
| CN113102145A (en) * | 2021-04-19 | 2021-07-13 | 周月珍 | Surface treatment method for turbine engine impeller production |
| CN113502446B (en) * | 2021-05-27 | 2023-07-28 | 中国航发南方工业有限公司 | Quick-turn and quick-change spraying protection clamp and spraying method |
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