CN219027013U

CN219027013U - Clamping device for machining engine blade

Info

Publication number: CN219027013U
Application number: CN202320137532.4U
Authority: CN
Inventors: 徐光凤; 张超
Original assignee: Nanjing Qianjing Machinery Technology Co ltd
Current assignee: Nanjing Qianjing Machinery Technology Co ltd
Priority date: 2023-01-29
Filing date: 2023-01-29
Publication date: 2023-05-16
Anticipated expiration: 2033-01-29

Abstract

The utility model discloses a clamping device for processing engine blades, which comprises: the device comprises a shell, a sealing cover fixedly connected to the right end of the shell, a mounting sleeve fixedly mounted on the left side wall of the sealing cover, a driving assembly arranged in the shell, two sliding rails arranged on the inner wall of the shell, two clamping assemblies respectively connected with the inner walls of the two sliding rails in a sliding manner and used for clamping a blade body, and two oiling assemblies fixedly connected to the left side wall of the sealing cover; because the spacing groove is half arc structure, consequently two claw plate bodies are at centre gripping blade body in-process, and the outer wall of blade body can be hugged closely to two spacing grooves, improves the centre gripping stability to the blade body outer wall, guarantees that the blade body can not take place to rock at grinding and rivers impact in-process, and then improves machining precision.

Description

Clamping device for machining engine blade

Technical Field

The utility model relates to the technical field of clamping devices, in particular to a clamping device for machining an engine blade.

Background

Most of aeroengine blades are cast, the blades need to be clamped in the grinding process, a large amount of scraps are generated on the outer wall of the blade in the grinding process, water flow impact is required to be carried out on the surface of the blade so as to keep the cleanliness of the surface of the blade, and therefore a clamping tool with good stability is required to be provided, and the existing blade clamping tool adopts a three-jaw disc clamping mode.

The Chinese patent discloses a special fixture and method for processing the tenon end face of an aeroengine blade (grant publication No. CN 112247618B), the technology of the patent locates the pulling force of the blade tip through a three-jaw chuck and limits the axial displacement of the blade along the technological cylinder shaft, in the process of clamping the blade, the whole engine blade is located and clamped under the condition of ensuring that the engine blade is not damaged, but the three-jaw chuck is structurally analyzed, all parts of the three-jaw chuck are almost in clearance fit, such as an I-shaped groove of a jaw and a chuck shell slide back and forth, a certain clearance exists, the clearance of all parts is obviously increased along with the increase of abrasion, and therefore centering errors become large, and the phenomenon of unstable clamping is caused.

Accordingly, one skilled in the art would be able to provide a clamping device for engine blade machining that addresses the problems set forth in the background above.

Disclosure of Invention

The utility model aims to provide a clamping device for machining engine blades, which aims to solve the problem that the prior three-jaw disc clamping tool provided in the background art has obviously increased gaps at all parts along with the increase of abrasion, so that the centering error is increased.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

a clamping device for machining an engine blade, comprising: the device comprises a shell, a sealing cover fixedly connected to the right end of the shell, a mounting sleeve fixedly mounted on the left side wall of the sealing cover, a driving assembly arranged in the shell, two sliding rails arranged on the inner wall of the shell, two clamping assemblies respectively connected with the inner walls of the two sliding rails in a sliding manner and used for clamping a blade body, and two oiling assemblies fixedly connected to the left side wall of the sealing cover;

the clamping assembly includes: the mounting block, fixed connection in claw plate body, two fixed connection in both sides wall around the mounting block straight slide, a plurality of fixed connection in arc slide, the fixed connection of mounting block left side wall equidistance distribution in the first pressure head of mounting block front side wall, mounting block and claw plate body pass through bolt fixed connection, straight slide and the inner wall sliding connection of slide rail, two the spacing groove that is used for holding blade body outer wall has all been seted up to the opposite face of claw plate body.

As a further scheme of the utility model: the drive assembly includes: the device comprises a chuck rotationally connected to the outer wall of the mounting sleeve, two through holes respectively formed in the outer wall of the shell, an adjusting head rotationally connected to the inner wall of the through holes, a bevel pinion fixedly connected to one end of the outer wall of the mounting sleeve and the other end of the bevel pinion fixedly connected to one end of the adjusting head, which is close to the mounting sleeve, and used for driving the chuck to rotate.

As still further aspects of the utility model: the right side wall of the chuck is provided with a plane thread groove, the left side wall of the chuck is provided with a large bevel gear, the arc-shaped sliding strip is in sliding connection with the inner wall of the plane thread groove, and the small bevel gear is in meshed connection with the large bevel gear.

As still further aspects of the utility model: the fueling assembly includes: the oil filling box is fixedly connected to the back of the sealing cover, the oil filling box is fixedly connected to the inner wall of the oil filling box, the inner wall of the oil filling box is divided into two parts of partition boards, the partition boards are arranged on the upper side of the outer wall of the partition boards, a second pressure head is embedded in the outer wall of one surface of the oil filling box, which is close to the first pressure head, a first spring is arranged between the second pressure head and the partition boards, the space of the first spring in the oil filling box is the first space, the other part of the space in the oil filling box is the second space, a piston plate is slidingly connected to the lower side of the inner wall of the oil filling box, a second spring is arranged between the bottom of the piston plate and the bottom of the inner wall of the second space, and the oil filling cover for adding lubricating oil to the second space is arranged on one surface of the outer wall of the oil filling box, which is far away from the second pressure head.

As still further aspects of the utility model: the limiting groove is of a semi-arc structure.

As still further aspects of the utility model: the outer walls of the first pressure head and the second pressure head are smooth hemispherical structures, and the first pressure head is in contact with the outer wall of the second pressure head when the inner wall of the sliding rail slides.

Compared with the prior art, the utility model has the beneficial effects that:

1. because the spacing groove is half arc structure, consequently two claw plate bodies are at centre gripping blade body in-process, and the outer wall of blade body can be hugged closely to two spacing grooves, improves the centre gripping stability to blade body outer wall, guarantees that blade body can not take place to rock at grinding and rivers impact in-process, and then improves machining precision.

2. Lubricating oil in the first space inside the oiling box can seep out along a gap between the second pressure head and the oiling box, and then is dripped on the inner wall of the plane thread groove, so that the lubricating effect during relative sliding between the arc-shaped sliding strip and the plane thread groove is improved, abrasion is reduced, and the phenomena of enlarged centering error and unstable clamping of the clamp are prevented.

Drawings

Fig. 1 is a schematic structural view of a clamping device for machining engine blades.

Fig. 2 is a schematic view of a front side explosion structure in a clamping device for machining an engine blade.

Fig. 3 is a schematic view of a rear side explosion structure in a clamping device for machining an engine blade.

Fig. 4 is a schematic structural view of a claw plate body and a limiting groove in a clamping device for processing engine blades.

Fig. 5 is a schematic view showing the internal structure of a fueling assembly in a clamping device for processing an engine blade.

In the figure: 1. a housing; 2. a cover; 3. a mounting sleeve; 4. a chuck; 5. a planar thread groove; 6. adjusting the head; 7. a through hole; 8. bevel pinion; 9. a large bevel gear; 10. a slide rail; 11. a mounting block; 12. a claw plate body; 13. a blade body; 14. an oil box; 15. a straight slide bar; 16. an arc-shaped sliding bar; 17. a first ram; 18. a bolt; 19. a limit groove; 20. a partition plate; 21. a notch; 22. a second ram; 23. a first spring; 24. a second spring; 25. a piston plate; 26. and the oil filling cover.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 5, an embodiment of the present utility model provides a clamping device for processing an engine blade, including: the device comprises a shell 1, a sealing cover 2 fixedly connected to the right end of the shell 1, a mounting sleeve 3 fixedly mounted on the left side wall of the sealing cover 2, a driving assembly arranged in the shell 1, two sliding rails 10 arranged on the inner wall of the shell 1, two clamping assemblies respectively connected with the inner walls of the two sliding rails 10 in a sliding manner and used for clamping a blade body 13, and two oiling assemblies fixedly connected to the left side wall of the sealing cover 2;

the clamping assembly includes: the installation piece 11, fixed connection is in claw plate body 12 of installation piece 11 right side wall, two fixed connection are in the straight slide 15 of both sides wall around the installation piece 11, a plurality of fixed connection is in the arc draw runner 16 of installation piece 11 left side wall equidistance distribution, fixed connection is in the first pressure head 17 of installation piece 11 front side wall, installation piece 11 and claw plate body 12 pass through bolt 18 fixed connection, straight slide 15 and slide rail 10's inner wall sliding connection, the spacing groove 19 that is used for centre gripping blade body 13 outer wall has all been seted up to the opposite face of two claw plate bodies 12.

The drive assembly includes: the chuck 4 connected to the outer wall of the mounting sleeve 3 in a rotating way, two through holes 7 respectively formed in the outer wall of the shell 1, an adjusting head 6 connected to the inner wall of the through holes 7 in a rotating way, a bevel pinion 8 with one end connected to the outer wall of the mounting sleeve 3 in a rotating way and the other end fixedly connected to one end of the adjusting head 6, which is close to the mounting sleeve 3, and used for driving the chuck 4 to rotate.

The right side wall of the chuck 4 is provided with a plane thread groove 5, the left side wall of the chuck 4 is provided with a large bevel gear 9, the arc-shaped sliding strip 16 is in sliding connection with the inner wall of the plane thread groove 5, and the small bevel gear 8 is in meshed connection with the large bevel gear 9.

The limit groove 19 is of a semi-arc structure.

When the blade body 13 needs to be clamped, a worker places the clamping part of the blade body 13 between the two claw plate bodies 12, uses a tool to rotate the adjusting head 6, then drives the bevel pinion 8 to rotate, and because the bevel pinion 8 is meshed with the bevel gear 9, the chuck 4 is driven to rotate, and then drives the arc sliding strip 16 to slide relatively on the inner wall of the plane thread groove 5, and then drives the straight sliding strip 15 on the mounting block 11 to slide on the inner wall of the sliding rail 10, and then drives the two claw plate bodies 12 to move relatively, so as to gradually clamp the outer wall of the blade body 13, and because the limiting groove 19 is of a semi-arc structure, the two claw plate bodies 12 can cling to the outer wall of the blade body 13 in the process of clamping the blade body 13, so that the clamping stability of the outer wall of the blade body 13 is improved, the blade body 13 is ensured not to shake in the grinding and water flow impact process, and further the processing precision is improved.

The oiling assembly comprises: the oil filling box 14 fixedly connected to the back of the sealing cover 2, the baffle 20 fixedly connected to the inner wall of the oil filling box 14 and dividing the inner space of the oil filling box 14 into two parts of spaces, the notch 21 formed in the upper side of the outer wall of the baffle 20, a second pressure head 22 embedded in one surface of the oil filling box 14 close to the first pressure head 17, a first spring 23 arranged between the second pressure head 22 and the baffle 20, the first spring 23 arranged in the space inside the oil filling box 14 as a first space, the other part of the space inside the oil filling box 14 as a second space, a piston plate 25 sliding connected to the lower side of the inner wall of the oil filling box 14 and positioned in the second space, a second spring 24 arranged between the bottom of the piston plate 25 and the bottom of the inner wall of the second space, and an oil filling cover 26 arranged on one surface of the outer wall of the oil filling box 14 far from the second pressure head 22 and used for adding lubricating oil to the second space.

The outer walls of the first pressure head 17 and the second pressure head 22 are of smooth hemispherical structures, and the first pressure head 17 is in contact with the outer wall of the second pressure head 22 when the mounting block 11 slides on the inner wall of the sliding rail 10.

When the inner wall of the sliding rail 10 slides, the mounting block 11 drives the first pressure head 17 to synchronously move, when the first pressure head 17 moves, the outer wall of the first pressure head 17 can extrude the outer wall of the second pressure head 22, the second pressure head 22 is extruded to a first space inside the oiling box 14, meanwhile, the first spring 23 is compressed, due to the action of elastic potential energy of the second spring 24, the piston plate 25 can be pushed to continuously push lubricating oil in a second space inside the oiling box 14 from the notch 21 to the first space inside the oiling box 14, the oil quantity in the first space is kept in a sufficient state all the time, and therefore when the second pressure head 22 is pressed into the oiling box 14, the lubricating oil in the first space inside the oiling box 14 can seep along a gap between the second pressure head 22 and the oiling box 14, and then is dripped into the inner wall of the plane thread groove 5, the lubricating effect during relative sliding between the arc-shaped sliding strip 16 and the plane thread groove 5 is improved, abrasion is reduced, and the phenomena of centering error and unstable clamping are prevented.

The working principle of the utility model is as follows:

when the utility model is used, when the blade body 13 is required to be clamped, a worker places the clamping part of the blade body 13 between the two claw plate bodies 12, and uses a tool to rotate the adjusting head 6 so as to drive the bevel pinion 8 to rotate, and as the bevel pinion 8 is meshed with the bevel big gear 9, the chuck 4 is driven to rotate so as to drive the arc sliding strip 16 to slide relatively on the inner wall of the plane thread groove 5, and further drive the straight sliding strip 15 on the mounting block 11 to slide on the inner wall of the sliding rail 10 so as to drive the two claw plate bodies 12 to move relatively, so that the outer wall of the blade body 13 is gradually clamped, and as the limiting groove 19 is of a semi-arc structure, the two claw plate bodies 12 can be clung to the outer wall of the blade body 13 in the process of clamping the blade body 13, the clamping stability of the outer wall of the blade body 13 is improved, the blade body 13 is ensured not to shake in the grinding and water flow impact processes, and the processing precision is improved;

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. A clamping device for machining an engine blade, comprising:

the device comprises a shell (1), a sealing cover (2) fixedly connected to the right end of the shell (1), a mounting sleeve (3) fixedly mounted on the left side wall of the sealing cover (2), a driving assembly arranged in the shell (1), two sliding rails (10) arranged on the inner wall of the shell (1), two clamping assemblies respectively in sliding connection with the inner walls of the two sliding rails (10) and used for clamping a blade body (13), and two oiling assemblies fixedly connected to the left side wall of the sealing cover (2);

the clamping assembly includes: installation piece (11), fixed connection in claw plate body (12) of installation piece (11) right side wall, two fixed connection in both sides wall's straight slide (15) around installation piece (11), a plurality of fixed connection in arc slide (16) that installation piece (11) left side wall equidistance was distributed, fixed connection in first pressure head (17) of installation piece (11) front side wall, installation piece (11) and claw plate body (12) pass through bolt (18) fixed connection, straight slide (15) and the inner wall sliding connection of slide rail (10), two spacing groove (19) that are used for centre gripping blade body (13) outer wall are all seted up on the opposite face of claw plate body (12).

2. The engine blade machining clamping device as claimed in claim 1, wherein the drive assembly includes: the rotary chuck comprises a chuck (4) rotationally connected to the outer wall of the mounting sleeve (3), two through holes (7) respectively formed in the outer wall of the shell (1), an adjusting head (6) rotationally connected to the inner wall of the through holes (7), a bevel pinion (8) fixedly connected to one end of the adjusting head (6) close to the mounting sleeve (3) and used for driving the chuck (4) to rotate, and one end of the adjusting head is rotationally connected with the outer wall of the mounting sleeve (3).

3. The clamping device for machining engine blades according to claim 2, wherein a planar thread groove (5) is formed in the right side wall of the chuck (4), a large bevel gear (9) is formed in the left side wall of the chuck (4), the arc-shaped sliding strip (16) is slidably connected with the inner wall of the planar thread groove (5), and the small bevel gear (8) is in meshed connection with the large bevel gear (9).

4. The clamping device for engine blade machining of claim 1, wherein the oiling assembly comprises: the utility model provides a refuel box (14) of fixed connection in closing cap (2) back, fixed connection in refuel box (14) inner wall will refuel box (14) inner space cut apart into baffle (20) in two part space, set up in notch (21) of baffle (20) outer wall upside, refuel box (14) are close to first pressure head (17) one side outer wall embedded have second pressure head (22), be provided with first spring (23) between second pressure head (22) and baffle (20), first spring (23) are first space in refuel box (14) inside space, another part space in refuel box (14) inside is the second space, refuel box (14) inside is located the inner wall below in second space side sliding connection has piston plate (25), be provided with second spring (24) between the bottom in piston plate (25) and the inner wall bottom in second space, the one side that the outer wall of refuel box (14) kept away from second pressure head (22) is provided with lid (26) that are used for adding lubricating oil to the second space.

5. Clamping device for engine blade machining according to claim 1, characterized in that the limit groove (19) is of semi-arc-shaped construction.

6. The clamping device for machining engine blades according to claim 4, wherein the outer walls of the first pressure head (17) and the second pressure head (22) are of smooth hemispherical structures, and the mounting block (11) is in contact with the outer wall of the first pressure head (17) and the outer wall of the second pressure head (22) when the inner wall of the sliding rail (10) slides.