CN114193186A

CN114193186A - Numerical control machining process and tool for split blade of aircraft engine

Info

Publication number: CN114193186A
Application number: CN202111548975.4A
Authority: CN
Inventors: 刘伟军; 王勇; 朱荣文; 游侠; 雷德猛; 张立; 刘诗雨
Original assignee: Chengdu Hongxia Technology Co Ltd
Current assignee: Chengdu Hongxia Technology Co Ltd
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-03-18
Anticipated expiration: 2041-12-17
Also published as: CN114193186B

Abstract

The invention discloses an aircraft engine split blade numerical control machining tool which comprises a tray, wherein a clamp is mounted on the tray, split blades are fixed on the clamp, a fixed block is fixedly connected to the upper surface of the tray, a notch is formed in the fixed block, and a cylindrical connecting rod is fixedly connected to the notch. According to the invention, the two sides of the split blade after being fixed by the clamp can present a certain angle due to needs, the split blade is not always kept parallel, the split blade is irregular in shape and has a certain weight, so that the split blade can inevitably rotate when being processed, the processing effect of the split blade can be influenced, and the part of the split blade extending out of the clamp is fixed by the clamping plate under the action of the rotating block and the clamping plate, so that the split blade can keep the current angle, and the split blade has a plurality of stress points, thereby facilitating the subsequent processing operation.

Description

Numerical control machining process and tool for split blade of aircraft engine

Technical Field

The invention relates to the technical field of engine blades, in particular to a numerical control machining process and a numerical control machining tool for split blades of an aircraft engine.

Background

An aircraft engine is a machine capable of converting other forms of energy into mechanical energy, including, for example, internal combustion engines (reciprocating piston engines), external combustion engines (stirling engines, steam engines, etc.), jet engines, electric motors, etc., such as internal combustion engines typically convert chemical energy into mechanical energy. The engine is suitable for a power generation device, and can also refer to the whole machine (such as a gasoline engine and an aircraft engine) comprising the power device. The engine is originally born in the great britain, so the concept of the engine is also derived from english, the concept of the engine is the 'mechanical device for generating power', and the split blade of the aircraft engine is a twisted complex curved surface in the numerical control machining process, so that the large positioning error and the difficult clamping are easy to occur in the machining process, and the consistency of machined parts is poor. The existing part clamping method is that a part clamping surface is of a movable structure, and a clamping mechanism is composed of moving parts such as a screw rod, an inclined slide block and a slide block during clamping. The inclined slide block is provided with a threaded hole, the inclined slide block is matched with the slide block, and the screw rod adopts a left thread form and a right thread form. When the screw rod rotates, the inclined sliding block can move along the axial direction of the screw rod to drive the sliding block to move up and down, so that the assembly and disassembly of parts are realized.

Because the shape of blade is irregular, add the angle that needs the regulation blade when adding man-hour to the blade, therefore when anchor clamps will adjust the blade fixed, the blade can't keep the stability of position under the effect of gravity, is unfavorable for going on of processing work, need improve processing frock, makes it can cooperate the better fixed blade of anchor clamps, the follow-up processing of being convenient for.

Disclosure of Invention

The invention aims to: in order to solve the problems, the numerical control machining process and the tool for the split blade of the aircraft engine are provided.

In order to achieve the purpose, the invention adopts the following technical scheme:

a numerical control machining tool for split blades of an aircraft engine comprises a tray, wherein a clamp is mounted on the tray, split blades are fixed on the clamp, a fixed block is fixedly connected to the upper surface of the tray, a notch is formed in the fixed block, a cylindrical connecting rod is fixedly connected to the notch, a rotating block is slidably connected to the connecting rod, a spring is sleeved on the connecting rod, two ends of the spring are respectively and fixedly connected with the rotating block which is symmetrically distributed, an opening is formed in the rotating block, the connecting rod penetrates through the opening, the rotating blocks are symmetrically distributed on the connecting rod, an arc-shaped connecting ring is fixedly connected to the rotating block, clamping grooves are circumferentially distributed in the connecting ring, connecting grooves are formed in the fixed block, clamping rods penetrate through the connecting grooves and stretch into the clamping grooves, a plurality of screw grooves which are uniformly distributed are vertically formed in the rotating block, the end portion of the rotating block is sleeved with a clamping block, the inner wall of the clamping block is respectively in sliding connection with the upper surface and the lower surface of the rotating block, a round hole corresponding to a screw groove is formed in the clamping block, a screw rod is connected with the screw groove in an internal thread mode, the screw rod is in sliding connection with the rotating block through the round hole, a clamping plate is fixedly connected onto the clamping block, a first square hole is formed in the rotating block in the transverse direction, a second square hole which is uniformly distributed and corresponds to the first square hole is formed in the fixed block, the inner wall of the first square hole and the inner wall of the second square hole are rough, and a limiting part for limiting the rotating block is arranged on the fixed block.

Preferably, the locating part includes the montant, fixedly connected with evenly distributed's square on the lateral wall of montant, square and square hole one-phase block, the tip fixedly connected with side piece of montant, the spout has been seted up on the side piece, sliding connection has the slider in the spout, it has the square pole to articulate on the slider, square pole and square hole two-phase block.

Preferably, the clamping rod is L-shaped, the bent end of the clamping rod is abutted to the upper surface of the fixing block, and the bent end of the clamping rod is provided with a handle.

Preferably, the outer wall of the clamping plate is provided with an elastic rubber cushion block, and the cushion blocks of the clamping plate are respectively contacted with the upper surface and the lower surface of the split blade.

Preferably, the connecting ring surrounds the connecting rod by taking the opening as a circle center, and the inner wall of the connecting ring is smooth and provided with a wear-resistant layer.

Preferably, the two ends of the screw rod are provided with rotating hands.

The numerical control machining process for the split blade of the aircraft engine is characterized by comprising the following steps of:

s1, fixing split blades: adjusting the angle of the split blade according to the requirement of processing by using a clamp on the tray to fix;

s2, determining the position of the rotating block: the position of the rotating block is adjusted according to the position of the folio blade, the rotating block is pushed to vertically slide on the connecting rod, and the rotating blocks which are symmetrically distributed are respectively positioned on the upper side and the lower side of the folio blade;

s3, adjusting the position of the clamping plate: rotating the rotating block and the clamping plates to enable the clamping plates to be respectively positioned at the upper side and the lower side of the split blade, penetrating the clamping rod through the connecting groove and the clamping groove formed in the connecting ring, keeping the rotating block at the current angle, then rotating the screw rod to enable the rotating block and the clamping plates to be close to each other, and compressing the spring until the clamping plates clamp the upper side and the lower side of the split blade;

s4, determining the position of the clamping plate: stretch into the square hole one of seting up on the turning block with the lateral wall of montant, stretch into square hole two with the square bar on the slider simultaneously, the position of turning block this moment is fixed, and the turning block can't be on the connecting rod vertical direction slip, promotes the turning block and rotates for the turning block is close to the blade of opening from opposite directions, and the turning block keeps current angular position this moment, and the one side of stretching out anchor clamps is fixed by splint.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. this application will run from opposite directions the blade and fix according to the demand angle regulation of required processing through using anchor clamps on the tray, the blade of running from opposite directions after anchor clamps are fixed is owing to need can lead to the both sides of running from opposite directions the blade and present certain angle, it is not always parallel to run from opposite directions the blade, owing to run from opposite directions the shape of blade self irregular, and it possesses certain weight to run from opposite directions the blade, consequently can inevitably lead to running from opposite directions the blade appearance pivoted phenomenon when processing to running from opposite directions the blade, can influence the processing effect of running from opposite directions the blade, under the effect of turning block and splint, splint will run from opposite directions the part that the blade stretches out anchor clamps and fix, make the blade of running from opposite directions can keep current angle, there are a plurality of stress points to the blade of running from opposite directions, subsequent processing operation of consequently being convenient for.

2. This application is through the position according to the position control turning block of folio blade, promote the turning block and slide in the vertical direction on the connecting rod, make the turning block of symmetric distribution be located respectively to folio blade the upper and lower both sides can, the turning block symmetric distribution, consequently, the turning block is located the upper and lower both sides of folio blade respectively, subsequent splint of being convenient for will be fixed the position of folio blade, promote the turning block can make the turning block of symmetry remove in the vertical direction on the connecting rod, move to the position that corresponds with folio blade until the turning block, the turning block can also rotate, it will fix folio blade to be convenient for splint rotate suitable position, the operation is comparatively simple and convenient, the loaded down with trivial details step has been saved, be convenient for the staff to operate by hand fast.

3. This application is through rotating turning block and splint, make splint be located the upper and lower both sides of opening the blade respectively, run through the draw-in groove of seting up on spread groove and the go-between with the kelly, the turning block keeps present angle, rotate the lead screw afterwards, make turning block and splint be close to each other, the spring is compressed, it is tight to the upper and lower both sides that splint will open the blade tightly up to, the surface of splint is equipped with elastic cushion, good elasticity that the cushion possesses can make splint will open the blade and will not damage often opening the blade when will opening the blade, make opening the blade and also can not easy emergence wearing and tearing phenomenon even receive the clamp of splint tightly, consequently can remain stable in subsequent processing, also more save worry of staff, be convenient for subsequent processing goes on.

4. This application is through stretching into the square hole one of seting up on the turning block on the lateral wall with the montant, stretch into square hole two with the square bar on the slider simultaneously, the position of turning block is fixed this moment, the turning block can't be on the connecting rod vertical direction slip, promote the turning block and rotate, make the turning block be close to the blade of opening from opposite directions, the turning block keeps present angular position this moment, one side that stretches out anchor clamps is fixed by splint, square and square bar stretch into square hole one and square hole two respectively, can make the position of turning block fixed, along with turning block pivoted in-process, the square bar can rotate thereupon, can slide in the spout with square bar articulated slider, consequently, the phenomenon that blocks can not appear in the rotation of square bar, and is comparatively convenient, the staff of being convenient for operates.

5. This application through the connecting rod on the cover spring both ends of establishing respectively with surface contact about the turning block of symmetric distribution, consequently the lead screw can lead to the corresponding compression of spring or tensile at the pivoted in-process, when the lead screw leads to the turning block to be close to each other, spring compression, the position of spring cooperation lead screw with the turning block is fixed, make the turning block can be better keep current position, and the spring can block the turning block and excessively be close to at the in-process that is close to, thereby the breakage that the turning block that leads to collides mutually leads to, more humanized nature, the effect of protection is played to the turning block.

Drawings

FIG. 1 is a schematic diagram illustrating an overall structure of a numerical control machining tool for split blades of an aircraft engine provided by an embodiment of the invention;

FIG. 2 shows structural schematic diagrams of the numerical control machining tool for the split blades of the aircraft engine provided by the embodiment of the invention;

FIG. 3 shows a schematic structural diagram of one side of a numerical control machining tool for split blades of an aircraft engine provided by the embodiment of the invention;

FIG. 4 is an enlarged schematic view of the structure A provided in accordance with an embodiment of the present invention;

illustration of the drawings:

1. a tray; 2. a clamp; 3. the blades are split; 4. a fixed block; 5. a notch; 6. a connecting rod; 7. rotating the block; 8. opening a hole; 9. a connecting ring; 10. a card slot; 11. connecting grooves; 12. a clamping rod; 13. a screw groove; 14. a screw rod; 15. a clamping block; 16. a circular hole; 17. a splint; 18. cushion blocks; 19. a first square hole; 20. a vertical rod; 21. a square block; 22. a side block; 23. a chute; 24. a slider; 25. a second square hole; 26. a square bar; 27. a spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution:

a numerical control machining tool for split blades of an aircraft engine comprises a tray 1, a clamp 2 is installed on the tray 1, split blades 3 are fixed on the clamp 2, a fixed block 4 is fixedly connected to the upper surface of the tray 1, a notch 5 is formed in the fixed block 4, a cylindrical connecting rod 6 is fixedly connected to the notch 5, a rotating block 7 is slidably connected to the connecting rod 6, a spring 27 is sleeved on the connecting rod 6, two ends of the spring 27 are respectively and fixedly connected with the rotating block 7 which is symmetrically distributed, an opening 8 is formed in the rotating block 7, the connecting rod 6 penetrates through the opening 8, the rotating block 7 is symmetrically distributed on the connecting rod 6, an arc-shaped connecting ring 9 is fixedly connected to the rotating block 7, the connecting ring 9 surrounds the connecting rod 6 by taking the opening 8 as a circle center, an inner wall of the connecting ring 9 is smooth and provided with a wear-resistant layer, clamping grooves 10 which are formed in the circumferential distribution of the connecting ring 9, and a connecting groove 11 is formed in the fixed block 4, a clamping rod 12 penetrates through the connecting groove 11, the clamping rod 12 is L-shaped, the bent end of the clamping rod 12 is abutted against the upper surface of the fixing block 4, a handle is arranged on the bent end of the clamping rod 12, the clamping rod 12 extends into the clamping groove 10, a plurality of uniformly distributed screw grooves 13 are vertically formed in the rotating block 7, a clamping block 15 is sleeved at the end part of the rotating block 7, the inner wall of the clamping block 15 is respectively connected with the upper surface and the lower surface of the rotating block 7 in a sliding manner, a round hole 16 corresponding to the screw groove 13 is formed in the clamping block 15, a screw rod 14 is connected with the screw groove 13 in an internal thread manner, rotating hands are arranged at two ends of the screw rod 14 to facilitate the rotation of the screw rod 14, so as to adjust the position of the rotating block 7, the screw rod 14 is connected with the rotating block 7 in a sliding manner through the round hole 16, a clamping plate 17 is fixedly connected onto the clamping block 15, an elastic rubber cushion block 18 is arranged on the outer wall of the clamping plate 17, the cushion block 18 of the clamping plate 17 is respectively contacted with the upper surface and the lower surface of the split blade 3, a square hole 19 is transversely formed in the rotating block 7, the fixed block 4 is provided with a second square hole 25 which is uniformly distributed and corresponds to the first square hole 19, the inner walls of the first square hole 19 and the second square hole 25 are rough, and the fixed block 4 is provided with a limiting part for limiting the rotating block 7.

The locating part includes montant 20, fixedly connected with evenly distributed's square 21 on montant 20's the lateral wall, square 21 and a 19 looks block in square hole, the tip fixedly connected with side piece 22 of montant 20, has seted up spout 23 on the side piece 22, sliding connection has slider 24 in the spout 23, and it has square bar 26 to articulate on the slider 24, and square bar 26 and two 25 looks blocks in square hole.

A numerical control machining process for split blades of an aircraft engine comprises the following steps:

s1, fixing split blades 3: adjusting the angle of the split blade 3 by using the clamp 2 on the tray 1 according to the requirement of processing;

s2, determining the position of the turning block 7: the position of the rotating block 7 is adjusted according to the position of the folio blade 3, the rotating block 7 is pushed to slide on the connecting rod 6 in the vertical direction, and the rotating blocks 7 which are symmetrically distributed are respectively positioned on the upper side and the lower side of the folio blade 3;

s3, position adjustment of the clamping plate 17: rotating the rotating block 7 and the clamping plate 17 to enable the clamping plate 17 to be respectively positioned at the upper side and the lower side of the split blade 3, penetrating the clamping rod 12 through the connecting groove 11 and the clamping groove 10 formed in the connecting ring 9, keeping the rotating block 7 at the current angle, then rotating the screw rod 14 to enable the rotating block 7 and the clamping plate 17 to be close to each other, and compressing the spring 27 until the clamping plate 17 clamps the upper side and the lower side of the split blade 3;

s4, determining the position of the clamping plate 17: the square block 21 on the side wall of the vertical rod 20 extends into the first square hole 19 formed in the rotating block 7, the square rod 26 on the sliding block 24 extends into the second square hole 25, the position of the rotating block 7 is fixed at the moment, the rotating block 7 cannot slide in the vertical direction on the connecting rod 6, the rotating block 7 is pushed to rotate, the rotating block 7 is made to be close to the folio blade 3, the rotating block 7 keeps the current angle position at the moment, and one side extending out of the clamp 2 is fixed by the clamping plate 17.

The previous description of the embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The numerical control machining tool for the split blades of the aircraft engine comprises a tray (1) and is characterized in that a clamp (2) is mounted on the tray (1), the split blades (3) are fixed on the clamp (2), a fixed block (4) is fixedly connected to the upper surface of the tray (1), a notch (5) is formed in the fixed block (4), a cylindrical connecting rod (6) is fixedly connected to the notch (5), a rotating block (7) is connected to the connecting rod (6) in a sliding mode, a spring (27) is sleeved on the connecting rod (6), two ends of the spring (27) are respectively and fixedly connected with the rotating block (7) which are symmetrically distributed, a hole (8) is formed in the rotating block (7), the connecting rod (6) penetrates through the hole (8), and the rotating blocks (7) are symmetrically distributed on the connecting rod (6), the clamping device is characterized in that an arc-shaped connecting ring (9) is fixedly connected to the rotating block (7), clamping grooves (10) are formed in the connecting ring (9) in a distributed mode, a connecting groove (11) is formed in the fixed block (4), a clamping rod (12) penetrates through the connecting groove (11), the clamping rod (12) extends into the clamping grooves (10), a plurality of uniformly distributed spiral grooves (13) are vertically formed in the rotating block (7), a clamping block (15) is sleeved at the end portion of the rotating block (7), the inner wall of the clamping block (15) is respectively in sliding connection with the upper surface and the lower surface of the rotating block (7), round holes (16) corresponding to the spiral grooves (13) are formed in the clamping block (15), a lead screw (14) is connected to the spiral grooves (13) in an internal thread mode, the lead screw (14) is in sliding connection with the rotating block (7) through the round holes (16), and clamping plates (17) are fixedly connected to the clamping block (15), the rotating block (7) is transversely provided with a first square hole (19), the fixed block (4) is provided with a second square hole (25) which is uniformly distributed and corresponds to the first square hole (19), the inner walls of the first square hole (19) and the second square hole (25) are rough, and the fixed block (4) is provided with a limiting part for limiting the rotating block (7).

2. The numerical control machining tool for the split blades of the aircraft engine according to claim 1, characterized in that the limiting part comprises a vertical rod (20), evenly distributed blocks (21) are fixedly connected to the side wall of the vertical rod (20), the blocks (21) are clamped with a first square hole (19), a side block (22) is fixedly connected to the end of the vertical rod (20), a sliding groove (23) is formed in the side block (22), a sliding block (24) is slidably connected in the sliding groove (23), a square rod (26) is hinged to the sliding block (24), and the square rod (26) is clamped with a second square hole (25).

3. The numerical control machining tool for the split blades of the aircraft engine according to claim 1, characterized in that the clamping rod (12) is L-shaped, the bent end of the clamping rod (12) is abutted against the upper surface of the fixing block (4), and a handle is arranged on the bent end of the clamping rod (12).

4. The numerical control machining tool for the split blades of the aircraft engine according to claim 1, characterized in that elastic rubber cushion blocks (18) are arranged on the outer wall of the clamping plate (17), and the cushion blocks (18) of the clamping plate (17) are respectively in contact with the upper surface and the lower surface of the split blade (3).

5. The numerical control machining tool for the split blades of the aircraft engine according to claim 1, characterized in that the connecting ring (9) surrounds the connecting rod (6) with the opening (8) as a circle center, and the inner wall of the connecting ring (9) is smooth and provided with a wear-resistant layer.

6. The numerical control machining tool for the split blades of the aircraft engine as claimed in claim 1, wherein rotating hands are arranged at two ends of the screw rod (14).

7. The numerical control machining process for the split blade of the aircraft engine is characterized by comprising the following steps of:

s1, fixing split blades (3): adjusting the angle of the split blade (3) by using a clamp (2) on the tray (1) according to the requirement of processing to fix;

s2, determining the position of the rotating block (7): the position of the rotating block (7) is adjusted according to the position of the split blade (3), the rotating block (7) is pushed to slide on the connecting rod (6) in the vertical direction, and the rotating blocks (7) which are symmetrically distributed are respectively positioned on the upper side and the lower side of the split blade (3);

s3, adjusting the position of the clamping plate (17): rotating the rotating block (7) and the clamping plate (17) to enable the clamping plate (17) to be respectively positioned at the upper side and the lower side of the split blade (3), penetrating the clamping rod (12) through the connecting groove (11) and the clamping groove (10) formed in the connecting ring (9), keeping the rotating block (7) at the current angle, then rotating the screw rod (14) to enable the rotating block (7) and the clamping plate (17) to be close to each other, and compressing the spring (27) until the clamping plate (17) clamps the upper side and the lower side of the split blade (3);

s4, determining the position of the clamping plate (17): stretch into square hole one (19) of seting up on turning block (7) with square bar (26) on the lateral wall of montant (20), stretch into square hole two (25) with square bar (26) on slider (24) simultaneously, the position of turning block (7) is fixed this moment, turning block (7) can't be in the vertical direction slip on connecting rod (6), promote turning block (7) and rotate, make turning block (7) be close to split blade (3), turning block (7) keep current angular position this moment, the one side of stretching out anchor clamps (2) is fixed by splint (17).