CN114800267A - Blade clamping device for hydraulic grinding of orifices and using method - Google Patents
Blade clamping device for hydraulic grinding of orifices and using method Download PDFInfo
- Publication number
- CN114800267A CN114800267A CN202210410277.6A CN202210410277A CN114800267A CN 114800267 A CN114800267 A CN 114800267A CN 202210410277 A CN202210410277 A CN 202210410277A CN 114800267 A CN114800267 A CN 114800267A
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- Prior art keywords
- blade
- face
- blade body
- bottom plate
- groove
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
Abstract
The invention provides a blade clamping device for a hydraulic grinding orifice and a using method thereof, which are accurate in design, labor-saving and convenient, can reduce clamping time, ensure the sealing property and the fitting property during assembly and have wide application range. The blade comprises a blade body, a bottom plate and a pressing plate, wherein the bottom plate is connected with the pressing plate through a screw rod; one end face of the bottom plate is connected with a machine tool machining face for hydraulic grinding, a groove and a mounting threaded hole are formed in the other end face of the bottom plate, an opening corresponding to a gas film hole orifice of the blade body is formed in the groove, the lower mounting end face of the blade body is attached to the groove through a lower gasket, the upper mounting end face of the blade body is attached to one end face of the pressing plate through an upper gasket, two sides of the pressing plate are clamped with the screw rod, and one end of the screw rod is arranged in the mounting threaded hole; and the shape of the lower gasket is matched with the shape of the lower mounting end surface of the blade body.
Description
Technical Field
The invention relates to the technical field of processing of blade gas film hole orifices, in particular to a blade clamping device for a hydraulic grinding orifice and a using method.
Background
With the continuous development of aircraft engines, the working temperature of high-pressure turbine of the engine is continuously increased, as the 'heart' of the aircraft engine, turbine blades are one of the key parts determining the performance of the engine, the gas temperature before the turbine is increased from 1000K of a first generation of engines to more than 2000K, and the increase of the inlet temperature is a severe test for materials. The high temperature resistance of the material alone cannot meet the requirement of working at high temperature. The film hole is a very effective cooling means, so that a blade cooling technology is adopted, and a cooling channel and the film hole are additionally arranged on the blade.
The orifice of the air film hole needs to be rounded, burrs are removed, the burr removing effect is obvious by adopting an abrasive flow processing technology, but the structure of the inner cavity of the blade is complex, viscous grinding materials are easily remained in the narrow inner channel and the air film hole, most of the grinding materials are aluminum oxide, silicon carbide, boron carbide and the like, and the blade is corroded by the grinding materials which are not cleaned up when the blade is subsequently subjected to vacuum brazing, so that the blade is scrapped. However, when the hydraulic grinding process is adopted for rounding and deburring, no clamping device can achieve batch clamping processing aiming at rounding and deburring of the turbine blade air film hole orifice by adopting the hydraulic grinding process due to the complex structure of the blade and the difficulty in processing and designing the blade air film hole orifice, the clamping time is long, the assembling and fitting tightness is not high, and certain influence is caused on the processing quality of the blade and the quality of subsequent finished products.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides the blade clamping device for the hydraulic grinding orifice and the using method thereof, the blade clamping device is accurate in design, labor-saving and convenient, can reduce clamping time, ensures the sealing property and the fitting property during assembly, and is wide in application range.
In order to achieve the purpose, the invention provides the following technical scheme:
a blade clamping device for a hydraulic grinding orifice comprises a blade body, a bottom plate and a pressing plate, wherein the bottom plate and the pressing plate are connected through a screw;
one end face of the bottom plate is connected with a machine tool machining face for hydraulic grinding, a groove and a mounting threaded hole are formed in the other end face of the bottom plate, an opening corresponding to a gas film hole orifice of the blade body is formed in the groove, the lower mounting end face of the blade body is attached to the groove through a lower gasket, the upper mounting end face of the blade body is attached to one end face of the pressing plate through an upper gasket, two sides of the pressing plate are clamped with the screw rod, and one end of the screw rod is arranged in the mounting threaded hole;
and the shape of the lower gasket is matched with the shape of the lower mounting end surface of the blade body.
Preferably, the screw is fixedly connected with the bottom plate through a first nut.
Preferably, the first nut is a hexagonal thin nut.
Preferably, the cross section of the bottom plate is rectangular, and the mounting threaded holes are formed at the corners of the bottom plate.
Preferably, one end of the screw rod clamped with the two sides of the pressing plate is fixed with the pressing plate through a second nut.
Preferably, the second nut is a hexagonal nut with a shoulder.
Preferably, the screw is a double-ended screw rod.
Preferably, a sealing groove is formed in the end face, connected with the machining surface of the machine tool, of the bottom plate, and a rubber sealing ring is arranged in the sealing groove.
Preferably, an upper cushion block is arranged between the upper mounting end face of the blade body and the upper gasket.
A method of using a blade holding apparatus for hydrodynamically grinding an aperture, comprising the steps of:
mounting and fixing the bottom plate on a machine tool processing surface for hydraulic grinding by using a screw rod;
mounting the lower gasket into the groove;
during clamping, aligning the orifice of the film hole of the blade body with the opening of the groove, and then attaching the lower mounting end face of the blade body to the lower gasket;
attaching the upper mounting end face of the blade body to the upper gasket and then to the end face of the pressing plate;
and clamping and fixing the two sides of the pressing plate and the screw rod to finish blade clamping.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a blade clamping device for a hydraulic grinding orifice, which comprises a blade body to be processed, a bottom plate and a pressing plate, wherein the bottom plate and the pressing plate are used for clamping, the upper mounting end surface and the lower mounting end surface of the blade body to be processed are respectively and correspondingly mounted in a groove of the end surface of the bottom plate and the end surface of the pressing plate in the blade clamping device according to the structural characteristics of a part to be processed, so that the position of an air film hole orifice of the end surface of the blade body can be ensured to be consistent with the position of an opening hole in the end surface of the blade clamping device, the processing requirement is met, meanwhile, the clamping mode of the clamping device is labor-saving and convenient, and the clamping time can be reduced. And because the clamping device and the clamping method are accurately designed, the connecting parts of the parts and the clamps are connected by gaskets, the assembly tightness and the fitting property of all the parts can be ensured, and the parts can be prevented from being collided and influencing the processing quality and the finished product quality of the parts due to the direct contact of the clamps on the parts in the clamping or processing process. The structure of the clamping device can be applied to processing and clamping of other similar processing modes, so that the blank of the prior art for removing the rounding and the burrs of the turbine blade air film hole orifice in a batch application mode is made up, and the clamping device can also be applied to batch processing production of other similar parts, and has a wide application range.
Furthermore, the invention adopts the design of a hollow structure, and on the basis, two or more lower gaskets can be arranged in the groove formed in the bottom plate at the same time, and specifically, the lower gaskets can be correspondingly arranged according to the size of the groove space in the bottom plate and the size of a part to be processed, such as the end face of a turbine guide blade, so that two or more parts can be processed at the same time, the space utilization rate and the power consumption utilization rate of equipment are greatly improved, the function of the equipment is exerted to the utmost extent, the processing efficiency of the parts is improved, and the batch production and application of the blades can be met.
Drawings
Fig. 1 is an overall structural view of the blade holding device of the present invention.
Fig. 2 is a plan view of the end face of the base plate in the present invention.
Fig. 3 is a side view of the base plate of the present invention.
FIG. 4 is a front plan view of the platen of the present invention.
FIG. 5 is a top view of a platen in the inventive apparatus.
Fig. 6 is a front view of a mat in the apparatus of the present invention.
Fig. 7 is a top view of a spacer in the apparatus of the present invention.
Fig. 8 is a top view of the lower bolster in the device of the present invention.
Fig. 9 is a top view of the upper mat in the apparatus of the present invention.
Fig. 10 is a front view of a shouldered hex nut in the inventive device.
Fig. 11 is a left side view of a shouldered hex nut in the inventive device.
Fig. 12 is a top view of a hexagonal shoulder nut of the inventive device.
FIG. 13 is a top view of an equal length stud in the apparatus of the present invention.
FIG. 14 is a front view of an equal length stud in the apparatus of the present invention.
Fig. 15 is a front view of a hex thin nut in the device of the present invention.
Fig. 16 is a top view of a hex thin nut in the device of the present invention.
Fig. 17 is a left side view of a hex thin nut in the device of the present invention.
In the figure, 1, a bottom plate; 2. pressing a plate; 3. an upper cushion block; 4. a lower gasket; 5. an upper gasket; 6. a hexagonal nut with shoulder; 7. a hexagonal thin nut; 8. a double-ended stud rod; 9. an O-shaped rubber sealing ring; 10. a lower mounting end face; 11. and an upper mounting end face.
Detailed Description
The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the invention.
As shown in FIG. 1, the blade clamping device for the hydraulic grinding of the orifice comprises a blade body, a bottom plate 1 and a pressure plate 2, wherein the bottom plate 1 and the pressure plate 2 are connected through a screw;
one end face of the bottom plate 1 is connected with a machine tool machining face for hydraulic grinding, a groove and a mounting threaded hole are formed in the other end face of the bottom plate 1, an opening corresponding to a gas film hole orifice of the blade body is formed in the groove, a lower mounting end face 10 of the blade body is attached to the groove through a lower gasket 4, an upper mounting end face 11 of the blade body is attached to one end face of the pressing plate 2 through an upper gasket 5, two sides of the pressing plate 2 are clamped with the screw rod, and one end of the screw rod is arranged in the mounting threaded hole;
wherein, the shape of the lower gasket 4 is matched with the shape of the lower mounting end surface 10 of the blade body.
The invention provides a blade clamping device for a hydraulic grinding orifice, which comprises a blade body to be processed, a bottom plate 1 and a pressing plate 2 for clamping, wherein an upper mounting end surface 11 and a lower mounting end surface 10 of the blade body to be processed are respectively and correspondingly mounted in a groove of the end surface of the bottom plate 1 and the end surface of the pressing plate 2 in the blade clamping device according to the structural characteristics of a part to be processed, so that the orifice position of a gas film hole of the end surface of the blade body and the opening position of the end surface of the blade clamping device can be kept consistent, the processing requirement is met, meanwhile, the clamping mode of the clamping device is labor-saving and convenient, and the clamping time can be reduced. And because the clamping device and the clamping method are accurately designed, the connecting parts of the parts and the clamps are connected by gaskets, the assembly tightness and the fitting property of all the parts can be ensured, and the parts can be prevented from being collided and influencing the processing quality and the finished product quality of the parts due to the direct contact of the clamps on the parts in the clamping or processing process. The structure of the clamping device can be applied to processing and clamping of other similar processing modes, so that the blank of the prior art for removing the rounding and the burrs of the turbine blade air film hole orifice in a batch application mode is made up, and the clamping device can also be applied to batch processing production of other similar parts, and has a wide application range.
Further, as shown in fig. 2 and 3, the invention adopts a hollow structure design, and on the basis, two or more lower gaskets 4 can be arranged in the groove formed in the bottom plate 1 at the same time, and specifically can be correspondingly arranged according to the size of the groove space in the bottom plate 1 and the size of a part to be processed, such as the end surface of a turbine guide blade, so that two or more parts can be processed at the same time, the space utilization rate and the power consumption utilization rate of equipment are greatly improved, the function of the equipment is exerted to the utmost extent, the processing efficiency of the parts is improved, and the application of blade batch production can be met.
Wherein, the one end of screw rod is inserted install threaded hole back through first nut with 1 fixed connection of bottom plate, during the clamping, make bottom plate 1 stabilize fixed mounting on the lathe through screwing first nut, during the installation, need notice make the hollow portion of 1 one end of bottom plate communicate with each other with the processing drill way that is used for the machine tool in hydraulic grinding drill way and install the alignment, trompil in 1 other end recess of bottom plate corresponds the installation with the gas film hole drill way position of blade body, makes it communicate with each other with the blade body inner chamber, guarantees that the course of working is not influenced, can normally process.
In this embodiment, as shown in fig. 2, the cross section of the bottom plate 1 is rectangular, four corners of the bottom plate 1 are chamfered, 4 mounting threaded holes are provided, and are respectively arranged at the 4 corners of the bottom plate 1, and meanwhile, the bottom plate 1 is fixed by matching with 4 screws, so that the firm reliability of clamping is ensured.
In this embodiment, as shown in fig. 15, 16 and 17, the first nut is a hexagonal thin nut 7.
Preferably, as shown in fig. 4 and 5, the screw rod with the one end of the both sides joint of clamp plate 2 pass through the second nut with clamp plate 2 is fixed, during the clamping, treat the last mounting terminal surface 11 of the blade body of processing through last gasket 5 with the laminating of clamp plate 2, simultaneously, clamp plate 2 both sides seted up with screw rod size assorted draw-in groove can make 2 both sides of clamp plate card cover in on the screw rod, after clamp plate 2 aligns with the last mounting terminal surface 11 laminating of blade body, screw up the second nut, realize the centre gripping of blade body to guarantee that the blade clamping is firm, can not appear not hard up phenomenon in the course of working.
Preferably, the clamping device provided by the invention can be suitable for clamping the mounting end surfaces with different structures at two ends of the blade, the clamping of different structures can be realized only by changing the shapes of the upper gasket 5 and the lower gasket 4 without replacing the bottom plate 1 and the pressure plate 2, the operation is simple and convenient, the structure is simple, the attaching degree of the clamping can be improved to the greatest extent, and the equipment cost is reduced.
In this embodiment, as shown in fig. 10, 11 and 12, the second nut is a hexagonal nut 6 with a shoulder.
In this embodiment, as shown in fig. 13 and 14, the screw rod is a stud rod 8 with 4 equal lengths.
Preferably, the upper gasket 5 and the lower gasket 4 can be made of silica gel, but not limited thereto, the gasket is made of a material which is soft in structure, does not damage parts, and is good in deformability, and the fitting degree of the gasket to the end faces of the parts is high.
In this embodiment, as shown in fig. 8, the lower gasket 4 is shaped like an airplane wing, and the lower gasket 4 is provided with an opening matched with the cavity of the lower mounting end surface 10 of the blade body.
In this embodiment, as shown in fig. 9, the upper gasket 5 is shaped like an airplane wing, and the upper gasket 5 is provided with an opening matched with the cavity of the upper mounting end surface 11 of the blade body.
In this embodiment, as shown in fig. 1, 6 and 7, an upper cushion block 3 is further disposed between the upper mounting end surface 11 of the blade body and the upper gasket 5, so as to prevent a gap from being left between the upper mounting end surface 11 and the upper gasket 5, which may cause loosening and shaking of the blade during the machining process, and affect the machining quality. A cushion block matched with the shape of the gap can be selected and placed between the upper mounting end face 11 and the upper gasket 5, and shaking is avoided.
The end face of the bottom plate 1 connected with the machine tool machining face is provided with a sealing groove, and a rubber sealing ring is arranged in the sealing groove and used for guaranteeing the sealing performance and the stability of installation.
In this embodiment, an O-ring rubber seal 9 is used.
The invention also provides a use method of the blade clamping device for hydraulically grinding the orifice, which comprises the following steps:
the base plate 1 is fixedly installed on a machine tool processing surface for hydraulic grinding by using a screw rod;
mounting the lower gasket 4 into the groove;
during clamping, aligning the orifice of the film hole of the blade body with the opening of the groove, and then attaching the lower mounting end face 10 of the blade body to the lower gasket 4;
the upper mounting end surface 11 of the blade body is attached to the upper gasket 5 and then attached to the end surface of the pressing plate 2;
and clamping and fixing the two sides of the pressing plate 2 and the screw rod to finish blade clamping.
The specific implementation manner of the blade clamping device in one embodiment of the invention during clamping is as follows:
in the using process, the O-shaped rubber sealing ring 9 is arranged in a groove on the end face of the bottom plate 1, the bottom plate 1 is arranged on a machine tool by using 4 screw rods, and no gap is ensured between the bottom plate 1 and the machine tool so as to prevent the processing liquid from leaking outwards in the processing process.
And 4 thin hexagonal nuts 7 are respectively sleeved at one ends of 4 equal-length stud rods 8, the equal-length stud rods 8 are sequentially screwed into 4 mounting threaded holes in the end face of the bottom plate 1, and the thin hexagonal nuts 7 are screwed in the opposite direction, so that the equal-length stud rods 8 are ensured to be firm.
Mounting a lower gasket 4 into an end face groove of a bottom plate 1, ensuring that a cavity of a lower mounting end face 10 is aligned with a round hole of the bottom plate 1 during clamping, and padding a cushion block 3 and an upper gasket 5 at the position of the upper mounting end face 1 of the blade;
then clamping the clamping grooves on the two sides of the pressing plate 2 on 4 stud rods 8 with equal length, and then screwing the hexagon nuts 6 with shoulders on the stud rods 8 with equal length by using a spanner;
and clamping the other blade on the bottom plate 1 according to the same steps, namely completing the preparation work of part clamping.
In order to achieve the purpose, the invention adopts main technical means. To the extent that they are clearly, completely, and accurately described, the essential nature of this invention is explained, they are understood and effected by those skilled in the art.
Claims (10)
1. A blade clamping device for a hydraulic grinding hole opening is characterized by comprising a blade body, a bottom plate (1) and a pressing plate (2), wherein the bottom plate (1) and the pressing plate (2) are connected through a screw rod;
one end face of the bottom plate (1) is connected with a machine tool machining face for hydraulic grinding, a groove and a mounting threaded hole are formed in the other end face of the bottom plate (1), a hole corresponding to a gas film hole orifice of the blade body is formed in the groove, a lower mounting end face (10) of the blade body is attached to the groove through a lower gasket (4), an upper mounting end face (11) of the blade body is attached to one end face of the pressing plate (2) through an upper gasket (5), two sides of the pressing plate (2) are clamped with the screw rod, and one end of the screw rod is arranged in the mounting threaded hole;
wherein the shape of the lower gasket (4) is matched with the shape of the lower mounting end surface (10) of the blade body.
2. A blade holding device for hydraulic grinding of apertures according to claim 1, characterized in that the screw is fixedly connected with the base plate (1) by means of a first nut.
3. A blade holding device for hydraulic grinding of apertures according to claim 2, characterized in that the first nut is a thin hexagonal nut (7).
4. A blade holding device for a hydraulic grinding port according to claim 1, characterized in that the cross-section of the base plate (1) is rectangular, and the mounting threaded holes are provided at the end corners of the base plate (1).
5. The blade clamping device for the hydraulic grinding of the orifice is characterized in that one end of the screw rod clamped with the two sides of the pressure plate (2) is fixed with the pressure plate (2) through a second nut.
6. A blade holding device for hydraulic grinding of apertures according to claim 5, characterized in that the second nut is a hexagonal shoulder nut (6).
7. A blade holding device for hydraulic grinding of apertures according to claim 1, characterized in that the screw is a double-ended screw (8).
8. The blade clamping device for the hydraulic grinding of the hole opening is characterized in that a sealing groove is formed in the end face, connected with the machine tool machining face, of the base plate (1), and a rubber sealing ring is arranged in the sealing groove.
9. A blade holding device for hydraulic grinding of orifices according to claim 1, characterized in that an upper cushion block (3) is provided between the upper mounting end face (11) of the blade body and the upper gasket (5).
10. A method of using a blade holding device for hydrodynamically grinding an aperture, characterized in that the blade holding device according to any of claims 1-9 comprises the steps of:
the bottom plate (1) is fixedly installed on a machine tool machining surface for hydraulic grinding by using a screw rod;
-mounting the lower gasket (4) into the groove;
during clamping, aligning the orifice of the film hole of the blade body with the opening of the groove, and then attaching the lower mounting end surface (10) of the blade body to the lower gasket (4);
attaching an upper mounting end face (11) of the blade body to the upper gasket (5) and then to the end face of the pressing plate (2);
and (3) clamping and fixing the two sides of the pressing plate (2) and the screw rod to finish blade clamping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210410277.6A CN114800267A (en) | 2022-04-19 | 2022-04-19 | Blade clamping device for hydraulic grinding of orifices and using method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210410277.6A CN114800267A (en) | 2022-04-19 | 2022-04-19 | Blade clamping device for hydraulic grinding of orifices and using method |
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| Publication Number | Publication Date |
|---|---|
| CN114800267A true CN114800267A (en) | 2022-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210410277.6A Pending CN114800267A (en) | 2022-04-19 | 2022-04-19 | Blade clamping device for hydraulic grinding of orifices and using method |
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| Country | Link |
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| CN (1) | CN114800267A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115319646A (en) * | 2022-08-18 | 2022-11-11 | 南京航空航天大学 | Turbine blade air film hole partition polishing device and method based on water-based abrasive particle flow |
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| CN110842751A (en) * | 2019-11-28 | 2020-02-28 | 中国航发沈阳黎明航空发动机有限责任公司 | Method for rounding orifice of guide vane air film hole |
| CN114101822A (en) * | 2021-12-15 | 2022-03-01 | 贵阳航发精密铸造有限公司 | Turbine blade air film hole machining method and machining device |
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2022
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2013026984A1 (en) * | 2011-08-24 | 2013-02-28 | Snecma | Tool for holding a turbine-engine part, including a means for attaching and immobilising the part and an element to be attached to said part by brazing or welding |
| CN105290950A (en) * | 2015-11-05 | 2016-02-03 | 西安航空动力股份有限公司 | Rounding method for turbine guide vane film hole opening |
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| CN110315359A (en) * | 2019-06-21 | 2019-10-11 | 西安朋邦工贸有限公司 | A kind of low-pressure turbine guide vane tool structure and adjusting method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115319646A (en) * | 2022-08-18 | 2022-11-11 | 南京航空航天大学 | Turbine blade air film hole partition polishing device and method based on water-based abrasive particle flow |
| CN115319646B (en) * | 2022-08-18 | 2023-07-18 | 南京航空航天大学 | Turbine blade air film hole partition finishing device and method |
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