CN112975785B

CN112975785B - Positioning and clamping tool for machining aircraft parts

Info

Publication number: CN112975785B
Application number: CN202110221083.7A
Authority: CN
Inventors: 金姣姣
Original assignee: Harbin Anyudi Aviation Industry Co ltd
Current assignee: Harbin Anyudi Aviation Industry Co ltd
Priority date: 2021-02-26
Filing date: 2021-02-26
Publication date: 2022-06-24
Anticipated expiration: 2041-02-26
Also published as: CN112975785A

Abstract

The invention provides a positioning and clamping tool for processing aircraft parts, which comprises a bottom plate; the top of the bottom plate is fixedly provided with a mounting structure through a screw; the mounting structure also comprises a through groove, a limiting hole, a sliding groove, a through hole and a mounting plate; four limiting holes are formed in the mounting plate in a penetrating manner, and a through hole is formed in the center of the mounting plate in a penetrating manner; the mounting plate is symmetrically provided with through grooves in a penetrating manner from left to right, and sliding grooves are symmetrically arranged on the front and back of the mounting plate; the top of the mounting plate is fixedly provided with a fixing plate through a screw; the fixing device is fixedly arranged at the center of the top of the bottom plate through the screw, the top plate is more firmly arranged through the through groove and the limiting hole, the shaking generated during the machining of airplane parts is avoided, the machining precision of the parts is ensured, the sliding block slides by pulling the first handle, and workers can adjust the height according to different parts, so that the device can machine the parts with different heights.

Description

Positioning and clamping tool for machining aircraft parts

Technical Field

The invention belongs to the technical field of airplane part machining, and particularly relates to a positioning and clamping tool for airplane part machining.

Background

The airplane refers to an airplane which has a power device with one or more engines to generate forward thrust or pull force, generates lift force by a fixed wing of a fuselage, flies in the atmosphere and is heavier than air, is the most common fixed wing airplane, can be divided into a jet airplane and a propeller airplane according to the types of engines used, and is one of the most important inventions in the beginning of the 20 th century.

If the application number is: in CN 201811578412.8's patent, an aircraft engine thin wall part shaping frock is disclosed, including last positioner and base, it is equipped with more than one adjustable strutting arrangement to go up between positioner and the base, adjustable strutting arrangement is crisscross each other by the supporting shoe and the linkage piece that all are more than two of quantity and constitutes, supporting shoe and linkage piece can transversely move towards thin wall part inner wall and be equipped with the binding face that matches the thin wall part inner wall, the linkage piece is driven by the supporting shoe of its both sides, the supporting shoe is driven by solitary power device and all supporting shoes can the synchronous motion. This frock compresses tightly the part upper end through last positioner, and is fixed with the part lower extreme through the base, supports the part through adjustable strutting arrangement from the part inner wall, has realized the stable clamping of thin wall part, conveniently processes the part appearance, is favorable to improving machining efficiency, guarantees product quality.

Based on the above, the inventor finds that, no matter whether the civil aircraft or the military aircraft is used, the parts of the civil aircraft or the military aircraft are required to be individually processed and then assembled, but in the actual production and processing, a special positioning fixture needs to be arranged for clamping some parts to perform subsequent processing, one positioning fixture cannot be used for processing parts of various types, and frequent replacement of the positioning fixture reduces the precision of equipment, reduces the processing efficiency, increases the cost of factory manufacturing tools, is inconvenient to use, and secondly, when the traditional positioning device is used, when the clamping device is clamped, the positioning device easily scratches the surface of the part to affect the processing of the part, and residues at the bottom of the existing positioning fixture are not easy to clean, so that the bottom of the part is not flat during processing, and the processed part is scrapped, the existing positioning clamp can not meet the current use requirement.

Disclosure of Invention

In order to solve the technical problems, the invention provides a positioning and clamping tool for machining aircraft parts, which aims to solve the problems that one positioning clamp cannot be used for machining parts of various types, a positioning device is easy to scratch the surfaces of the parts, and the bottoms of the parts are not flat during machining.

The invention relates to a positioning and clamping tool for processing aircraft parts, which is realized by the following specific technical means:

a positioning and clamping tool for machining airplane parts comprises a bottom plate, a fixing device, a lifting structure, a clamping device, a positioning device and a screw rod; the top of the bottom plate is fixedly provided with a mounting structure through a screw; the mounting structure also comprises a through groove, a limiting hole, a sliding groove, a through hole and a mounting plate; four limiting holes are formed in the mounting plate in a penetrating manner, and a through hole is formed in the center of the mounting plate in a penetrating manner; the mounting plate is symmetrically provided with through grooves in a penetrating manner from left to right, and sliding grooves are symmetrically arranged on the front and back of the mounting plate; the top of the mounting plate is fixedly provided with a fixing plate through a screw; the fixing device is fixedly arranged at the center of the top of the bottom plate through a screw, and a sliding device is connected in the fixing device in a sliding manner; the lifting structure is connected inside the mounting plate in a sliding manner, and the bottom of the lifting structure is connected with an adjusting device; the clamping device is connected to the top of the lifting structure in a sliding mode, and a fixed block is welded to the right side of the top of the mounting plate; the screw rod is in threaded connection with the inside of the fixed block, the left side of the screw rod is rotationally connected with the clamping device, and the right side of the screw rod is welded with the hexagonal block; the positioning device is welded at the front end of the top of the lifting structure.

Furthermore, the fixing device also comprises a base, a limiting plate and a T-shaped groove; t type groove has been seted up to base inside, and both ends have the limiting plate through screw fixed mounting around the base.

Furthermore, the sliding device also comprises a sliding block, an adjusting hole, a T-shaped block and a first handle; an adjusting hole is formed in the sliding block, and a first handle is welded at the center of the front end of the sliding block; the welding of slider bottom has T type piece, and T type piece sliding connection is inside in T type groove.

Furthermore, the lifting structure also comprises a top plate, a limiting column, a fixing cap, a sliding plate, an adjusting block and an adjusting groove; four limiting columns are welded at the bottom of the top plate, the four limiting columns are connected inside the limiting holes in a sliding mode, and fixing caps are connected to the bottoms of the four limiting columns in a threaded mode; the center of the bottom of the top plate is welded with an adjusting block, and the adjusting block is connected inside the through hole in a sliding manner; the top plate is symmetrically penetrated with adjusting grooves in the front and back; the roof bottom bilateral symmetry welding has the slide, and slide sliding connection is inside leading to the groove.

Furthermore, the adjusting device also comprises an adjusting plate I, an adjusting plate II, a supporting block and a handle; the two supporting blocks are welded at the top of the bottom plate in a bilateral symmetry mode, and the first adjusting plate is rotatably connected with the two sliding plates through a rotating shaft; the outer walls of the two first adjusting plates are connected with a second adjusting plate in a sliding mode, and the two second adjusting plates are fixedly and rotatably connected with the two supporting blocks through rotating shafts; and a handle is welded between the two adjusting plates II.

Furthermore, the clamping device also comprises a clamping plate, a stabilizing block and a fixing pin; the clamping plates are connected inside the two adjusting grooves in a sliding mode, and stabilizing blocks are symmetrically arranged at the front and the back of the bottoms of the clamping plates; two the stabilizing blocks pass through fixed pin and splint fixed connection, and two stabilizing block sliding connection are inside two spouts.

Furthermore, the positioning device also comprises a positioning plate, a fixing groove, a limiting pin, a spring, a pressing device, a limiting block and a handle II; a fixing groove is formed in the positioning plate, and limiting pins are connected to the positioning plate in a sliding mode in a bilateral symmetry mode; the front ends of the two limiting pins are welded with pressing devices, springs are symmetrically arranged on the pressing devices and the positioning plate from left to right, and the two springs are located outside the two limiting pins; the second handle is connected inside the fixing groove in a sliding mode, the front end of the second handle is connected to the front end of the pressing device in a rotating mode, and a limiting block is welded to the outer wall of the second handle.

Furthermore, the pressing device also comprises a pressing plate, a rotating roller, a connecting block and a fixing shaft; nine groups of connecting blocks are welded on the compression plate in an up-and-down symmetrical mode, rotating rollers are arranged inside the nine groups of connecting blocks, and the nine rotating rollers are rotatably connected inside the nine groups of connecting blocks through fixing shafts.

Further, when the adjusting block is positioned in the adjusting hole at the frontmost end, the distance between the top of the top plate and the clamping plate is 5mm, and when the adjusting block is positioned in the adjusting hole at the rearmost end, the distance between the bottom of the top plate and the top of the stabilizing block is 5 mm; and a 3mm gap is formed between the outer wall of the top plate and the inner wall of the fixing plate.

The invention at least comprises the following beneficial effects:

1. the top plate is more firmly installed by the through groove and the limiting hole, the situation that the airplane parts shake during machining is avoided, the machining precision of the parts is guaranteed, the sliding block slides by pulling the first handle, workers can adjust the height of the parts according to the different heights, the device can machine the parts with different heights, the problem that the precision of equipment is reduced due to frequent replacement of machining tools is avoided, the device reduces the time for replacing the tools, the machining efficiency is improved, meanwhile, the cost of factory manufacturing tools is also reduced, the handle is welded between the two adjusting plates, the workers can control the top plate to lift by pressing the handle, the position of the sliding block can be conveniently adjusted by the workers, and the structure is convenient for the workers to operate.

2. The clamping plate is arranged in the two adjusting grooves in a sliding manner, so that the clamping plate can be always kept flush with the top of the fixing plate and can be automatically adjusted according to the height of a part, the clamping maximization is ensured, the two stabilizing blocks are connected in the two sliding grooves in a sliding manner, the stability of the part during processing is improved, the part to be processed is conveniently positioned by the pressing device, the clamping accuracy is ensured, the traditional clamping mode is generally manually clamped by the working experience of workers, but the requirement of the airplane part during processing is higher, the mode is easy to generate angle change during clamping, the processed product is scrapped, and the limiting block is clamped and connected in the fixing groove by pulling the handle II to rotate ninety degrees after the clamping device finishes clamping, so that the damage of a cutter to the positioning device during processing of the part is avoided, meanwhile, the positioning device is prevented from interfering with the processing of the parts, the design is humanized, the use by workers is facilitated, and the processing efficiency of the parts is improved.

3. Traditional positioner is when using, when clamping device is pressing from both sides tightly, positioner causes the fish tail to the part surface easily, the processing of part has been influenced, the device passes through the live-rollers, the setting of connecting block and fixed axle, the problem that traditional mode caused the fish tail to the part surface when fixing a position has been solved, the centre gripping accuracy when having guaranteed parts processing, the machining precision of part has been improved, traditional centre gripping frock is when using, the waste residue is remained easily in the corner between roof and the fixed plate, and be not convenient for staff's discovery and clearance, lead to the part to be scrapped bottom unevenness man-hour, make the part after the processing scrap, the processing progress of part has not only been influenced, and aircraft part is expensive, huge loss has been caused to the mill.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a schematic view of another structure according to the present invention.

Fig. 3 is a schematic top view of the present invention.

Fig. 4 is a schematic view of the structure of the mounting structure and the clamping device of the present invention.

Fig. 5 is a schematic view of the lifting structure and the adjusting device of the present invention.

Fig. 6 is a schematic view of the structure of the fixing device and the sliding device of the present invention.

FIG. 7 is a schematic view of the positioning device of the present invention.

In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:

1. a base plate; 2. a mounting structure; 201. a through groove; 202. a limiting hole; 203. a chute; 204. a through hole; 205. mounting a plate; 3. a fixing device; 301. a base; 302. a limiting plate; 303. a T-shaped groove; 4. a sliding device; 401. a slider; 402. an adjustment hole; 403. a T-shaped block; 404. a first handle; 5. a lifting structure; 501. a top plate; 502. a limiting column; 503. a fixed cap; 504. a slide plate; 505. an adjusting block; 506. an adjustment groove; 6. an adjustment device; 601. a first adjusting plate; 602. a second adjusting plate; 603. a supporting block; 604. a handle; 7. a clamping device; 701. a splint; 702. a stabilization block; 703. a fixing pin; 8. a positioning device; 801. positioning a plate; 8011. fixing grooves; 802. a spacing pin; 803. a spring; 804. a pressing device; 8041. a compression plate; 8042. a rotating roller; 8043. connecting blocks; 8044. a fixed shaft; 805. a limiting block; 806. a second handle; 9. a fixing plate; 10. a screw rod; 11. a fixed block; 12. a hexagonal block.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "side," "top," "inner," "front," "center," "two end," and the like are used in an orientation or positional relationship that is indicated in the figures to facilitate the description of the invention and to simplify the description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and is not to be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be understood broadly, and for example, they may be fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.

Example (b):

as shown in figures 1 to 7:

the invention provides a positioning and clamping tool for processing aircraft parts, which comprises a bottom plate 1, a fixing device 3, a lifting structure 5, a clamping device 7, a positioning device 8 and a screw rod 10, wherein the lifting structure comprises a lifting mechanism and a clamping mechanism; the top of the bottom plate 1 is fixedly provided with a mounting structure 2 through a screw; the mounting structure 2 further comprises a through groove 201, a limiting hole 202, a sliding groove 203, a through hole 204 and a mounting plate 205; four limiting holes 202 are formed in the mounting plate 205 in a penetrating manner, and a through hole 204 is formed in the center of the mounting plate 205 in a penetrating manner; the mounting plate 205 is symmetrically provided with through grooves 201 in a left-right penetrating manner, and the mounting plate 205 is symmetrically provided with sliding grooves 203 in a front-back penetrating manner; the top of the mounting plate 205 is fixedly provided with a fixing plate 9 through a screw; the fixing device 3 is fixedly arranged at the center of the top of the bottom plate 1 through a screw, and the inside of the fixing device 3 is connected with a sliding device 4 in a sliding manner; the lifting structure 5 is connected inside the mounting plate 205 in a sliding manner, and the bottom of the lifting structure 5 is connected with the adjusting device 6; the clamping device 7 is connected to the top of the lifting structure 5 in a sliding mode, and the fixed block 11 is welded to the right side of the top of the mounting plate 205; the screw rod 10 is in threaded connection with the inside of the fixed block 11, the left side of the screw rod 10 is in rotary connection with the clamping device 7, and the right side of the screw rod 10 is welded with a hexagonal block 12; the positioning device 8 is welded at the front end of the top of the lifting structure 5.

The fixing device 3 further comprises a base 301, a limiting plate 302 and a T-shaped groove 303; the base 301 is internally provided with a T-shaped groove 303, the front end and the rear end of the base 301 are fixedly provided with limiting plates 302 through screws, and the limiting plates 302 prevent the T-shaped block 403 from sliding off.

The sliding device 4 further comprises a sliding block 401, an adjusting hole 402, a T-shaped block 403 and a first handle 404; an adjusting hole 402 is formed in the sliding block 401, and a first handle 404 is welded at the center of the front end of the sliding block 401; the welding of slider 401 bottom has T type piece 403, and T type piece 403 sliding connection is inside T type groove 303, makes slider 401 slide through pulling handle 404, and the staff can highly adjust according to the spare part of difference for the device can process the spare part of co-altitude not, has avoided frequently changing the processing frock and has leaded to the equipment precision to reduce, and the device has reduced the time of changing the frock, has improved machining efficiency, has also reduced the cost of factory's preparation frock simultaneously.

Wherein, the lifting structure 5 further comprises a top plate 501, a limit column 502, a fixing cap 503, a sliding plate 504, an adjusting block 505 and an adjusting groove 506; the bottom of the top plate 501 is welded with four limiting columns 502, the four limiting columns 502 are connected inside the limiting holes 202 in a sliding mode, and the bottoms of the four limiting columns 502 are connected with fixing caps 503 in a threaded mode; an adjusting block 505 is welded at the center of the bottom of the top plate 501, and the adjusting block 505 is connected inside the through hole 204 in a sliding manner; the top plate 501 is symmetrically penetrated with adjusting grooves 506 in front and back; the sliding plates 504 are symmetrically welded at the bottom of the top plate 501 left and right, the sliding plates 504 are connected inside the through grooves 201 in a sliding mode, products to be processed can be placed on the top plate 501 conveniently, and the fixing caps 503 are convenient to disassemble and assemble the top plate 501.

The adjusting device 6 further comprises an adjusting plate I601, an adjusting plate II 602, a supporting block 603 and a handle 604; the two supporting blocks 603 are welded on the top of the bottom plate 1 in a bilateral symmetry manner, and the two first adjusting plates 601 are rotatably connected with the two sliding plates 504 through rotating shafts; the outer walls of the two first adjusting plates 601 are connected with a second adjusting plate 602 in a sliding manner, and the two second adjusting plates 602 are fixedly and rotatably connected with the two supporting blocks 603 through rotating shafts; a handle 604 is welded between the two adjusting plates 602, and a worker can control the top plate 501 to rise by pressing the handle 604, so that the worker can adjust the position of the sliding block 401 conveniently, and the structure is convenient for the worker to operate.

The clamping device 7 further comprises a clamping plate 701, a stabilizing block 702 and a fixing pin 703; the clamping plate 701 is connected inside the two adjusting grooves 506 in a sliding manner, and stabilizing blocks 702 are symmetrically arranged at the front and the back of the bottom of the clamping plate 701; two steady blocks 702 pass through fixed pin 703 and splint 701 fixed connection, and two steady blocks 702 sliding connection are inside two spouts 203, splint 701 sliding connection is in the inside setting of two adjustment tanks 506 for splint 701 not only can keep the parallel and level with fixed plate 9 top always, can also highly carry out automatically regulated according to spare part, has guaranteed the centre gripping maximize, and two steady blocks 702 sliding connection are inside two spouts 203, have improved the stability that spare part adds man-hour.

The positioning device 8 further comprises a positioning plate 801, a fixing groove 8011, a limiting pin 802, a spring 803, a pressing device 804, a limiting block 805 and a second handle 806; a fixing groove 8011 is formed in the positioning plate 801, and limiting pins 802 are connected to the positioning plate 801 in a sliding manner in a bilateral symmetry manner; the front ends of the two limiting pins 802 are welded with pressing devices 804, springs 803 are symmetrically arranged on the pressing devices 804 and the positioning plate 801 in a left-right mode, and the two springs 803 are located outside the two limiting pins 802; the second handle 806 is connected inside the fixing groove 8011 in a sliding manner, the front end of the second handle 806 is rotatably connected to the front end of the pressing device 804, the limiting block 805 is welded on the outer wall of the second handle 806, the pressing device 804 is convenient for positioning a part to be processed, and the accuracy of clamping is guaranteed, the conventional clamping mode generally adopts the working experience of workers to carry out manual clamping, but the requirement of an airplane part during processing is high, the mode is easy to change the angle during clamping, so that a processed product is scrapped, and the second handle 806 can be pulled to rotate ninety degrees after the clamping of the clamping device 7 is completed, so that the limiting block 805 is connected inside the fixing groove 8011 in a clamping manner, the damage of a cutter to the positioning device 8 during processing of the part is avoided, meanwhile, the positioning device 8 is prevented from interfering with the processing of the part, the design is humanized, and the use of the workers is facilitated, the processing efficiency of spare part has been improved.

Wherein, the pressing device 804 further comprises a pressing plate 8041, a rotating roller 8042, a connecting block 8043 and a fixed shaft 8044; nine groups of connecting blocks 8043 are welded on the pressing plate 8041 in an up-down symmetrical mode, rotating rollers 8042 are arranged inside the nine groups of connecting blocks 8043, the nine rotating rollers 8042 are rotatably connected inside the nine groups of connecting blocks 8043 through fixing shafts 8044, the traditional positioning device 8 is used, when the clamping device 7 is clamped, the positioning device 8 easily scratches the surface of a part, the processing of the part is influenced, the device passes through the rotating rollers 8042, the connecting blocks 8043 and the fixing shafts 8044, the problem that the surface of the part is scratched in a traditional mode when being positioned is solved, the clamping accuracy in part processing is guaranteed, and the processing precision of the part is improved.

When the adjusting block 505 is located at the foremost adjusting hole 402, the distance between the top of the top plate 501 and the clamping plate 701 is 5mm, and when the adjusting block 505 is located at the rearmost adjusting hole 402, the distance between the bottom of the top plate 501 and the top of the stabilizing block 702 is 5 mm; be provided with the 3mm clearance between roof 501 outer wall and the 9 inner walls of fixed plate, guaranteed that the device can normal use in highest place and lowest, be provided with the setting in 3mm clearance between roof 501 outer wall and the 9 inner walls of fixed plate, traditional centre gripping frock is when using, the waste residue is remained easily in the corner between roof 501 and the fixed plate 9, and the staff of being not convenient for discovers and clears up, lead to spare part bottom unevenness man-hour adding, make spare part after the processing scrap, the processing progress of spare part has not only been influenced, and aircraft spare part is expensive, huge loss has been caused to the mill.

The specific use mode and function of the embodiment are as follows:

when the device is used, firstly, a worker fixes the device on the top of an equipment workbench through the bottom plate 1, then the worker pulls the first handle 404 according to the height of a part to be processed to enable the sliding block 401 to slide, the worker can adjust according to the height of different parts, the device can process parts with different heights, the reduction of equipment precision caused by frequent replacement of processing tools is avoided, the device reduces the time for replacing the tools, improves the processing efficiency, simultaneously reduces the cost for manufacturing the tools in factories, then the part to be processed is placed on the top of the top plate 501 and is pressed through the positioning device 8, the clamping accuracy is ensured, then the hexagonal block 12 is screwed to enable the screw rod 10 to drive the clamping device 7 to clamp, and the clamping device 7 can rotate ninety degrees by pulling the second handle 806 after clamping is completed, the limiting block 805 is connected to the inside of the fixing groove 8011 in a clamping mode, damage to the positioning device 8 caused by a cutter during machining of parts is avoided, meanwhile, the positioning device 8 is prevented from interfering machining of the parts, the design is humanized, the use of workers is facilitated, and machining efficiency of the parts is improved.

The invention is not described in detail, but is well known to those skilled in the art.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. The utility model provides a location centre gripping frock of aircraft parts processing which characterized in that: comprises a bottom plate (1), a fixing device (3), a lifting structure (5), a clamping device (7), a positioning device (8) and a screw rod (10); the top of the bottom plate (1) is fixedly provided with a mounting structure (2) through a screw; the mounting structure (2) further comprises a through groove (201), a limiting hole (202), a sliding groove (203), a through hole (204) and a mounting plate (205); four limiting holes (202) are formed in the mounting plate (205) in a penetrating manner, and a through hole (204) is formed in the center of the mounting plate (205) in a penetrating manner; the mounting plate (205) is symmetrically provided with through grooves (201) in a penetrating manner from left to right, and the mounting plate (205) is symmetrically provided with sliding grooves (203) from front to back; the top of the mounting plate (205) is fixedly provided with a fixing plate (9) through a screw; the fixing device (3) is fixedly arranged at the center of the top of the bottom plate (1) through a screw, and the inside of the fixing device (3) is connected with a sliding device (4) in a sliding manner; the lifting structure (5) is connected inside the mounting plate (205) in a sliding manner, and the bottom of the lifting structure (5) is connected with an adjusting device (6); the clamping device (7) is connected to the top of the lifting structure (5) in a sliding mode, and a fixing block (11) is welded to the right side of the top of the mounting plate (205); the screw rod (10) is in threaded connection with the inside of the fixing block (11), the left side of the screw rod (10) is rotatably connected with the clamping device (7), and the right side of the screw rod (10) is welded with the hexagonal block (12); the positioning device (8) is welded at the front end of the top of the lifting structure (5);

the sliding device (4) further comprises a sliding block (401), an adjusting hole (402), a T-shaped block (403) and a first pull handle (404); an adjusting hole (402) is formed in the sliding block (401), and a first handle (404) is welded at the center of the front end of the sliding block (401); the bottom of the sliding block (401) is welded with a T-shaped block (403), and the T-shaped block (403) is connected inside the T-shaped groove (303) in a sliding mode;

the lifting structure (5) further comprises a top plate (501), a limiting column (502), a fixing cap (503), a sliding plate (504), an adjusting block (505) and an adjusting groove (506); the bottom of the top plate (501) is welded with four limiting columns (502), the four limiting columns (502) are connected inside the limiting hole (202) in a sliding mode, and the bottoms of the four limiting columns (502) are connected with fixing caps (503) in a threaded mode; the center of the bottom of the top plate (501) is welded with an adjusting block (505), and the adjusting block (505) is connected inside the through hole (204) in a sliding manner; the top plate (501) is symmetrically penetrated with adjusting grooves (506) in front and back; the sliding plates (504) are welded at the bottom of the top plate (501) in a bilateral symmetry mode, and the sliding plates (504) are connected inside the through grooves (201) in a sliding mode.

2. A positioning and clamping tool for machining aircraft parts according to claim 1, wherein: the fixing device (3) further comprises a base (301), a limiting plate (302) and a T-shaped groove (303); t type groove (303) have been seted up to base (301) inside, and both ends have limiting plate (302) through screw fixed mounting around base (301).

3. A positioning and clamping tool for machining aircraft parts according to claim 1, wherein: the adjusting device (6) further comprises a first adjusting plate (601), a second adjusting plate (602), a supporting block (603) and a handle (604); the two supporting blocks (603) are welded on the top of the bottom plate (1) in a bilateral symmetry manner, and the two first adjusting plates (601) are rotatably connected with the two sliding plates (504) through rotating shafts; the outer walls of the two first adjusting plates (601) are connected with a second adjusting plate (602) in a sliding mode, and the two second adjusting plates (602) are fixedly and rotatably connected with the two supporting blocks (603) through rotating shafts; a handle (604) is welded between the two second adjusting plates (602).

4. A positioning and clamping tool for machining aircraft parts according to claim 1, wherein: the clamping device (7) further comprises a clamping plate (701), a stabilizing block (702) and a fixing pin (703); the clamping plate (701) is connected inside the two adjusting grooves (506) in a sliding mode, and the bottom of the clamping plate (701) is symmetrically provided with stabilizing blocks (702) in the front-back mode; two stabilizing blocks (702) are fixedly connected with the clamping plate (701) through fixing pins (703), and the two stabilizing blocks (702) are connected inside the two sliding grooves (203) in a sliding mode.

5. A positioning and clamping tool for machining aircraft parts according to claim 1, wherein: the positioning device (8) further comprises a positioning plate (801), a fixing groove (8011), a limiting pin (802), a spring (803), a pressing device (804), a limiting block (805) and a handle II (806); fixing grooves (8011) are formed in the positioning plate (801), and limiting pins (802) are connected in the positioning plate (801) in a sliding mode in a bilateral symmetry mode; the front ends of the two limiting pins (802) are welded with pressing devices (804), springs (803) are symmetrically arranged on the pressing devices (804) and the positioning plate (801) in the left-right direction, and the two springs (803) are located outside the two limiting pins (802); the second handle (806) is connected to the inside of the fixing groove (8011) in a sliding mode, the front end of the second handle (806) is connected to the front end of the pressing device (804) in a rotating mode, and a limiting block (805) is welded to the outer wall of the second handle (806).

6. A positioning and clamping tool for machining aircraft parts according to claim 5, wherein: the pressing device (804) further comprises a pressing plate (8041), a rotating roller (8042), a connecting block (8043) and a fixed shaft (8044); nine groups of connecting blocks (8043) are symmetrically welded on the upper portion and the lower portion of the pressing plate (8041), rotating rollers (8042) are arranged inside the nine groups of connecting blocks (8043), and the nine rotating rollers (8042) are rotatably connected inside the nine groups of connecting blocks (8043) through fixing shafts (8044).

7. A positioning and clamping tool for machining aircraft parts according to claim 1, wherein: when the adjusting block (505) is positioned in the adjusting hole (402) at the frontmost end, the distance between the top of the top plate (501) and the clamping plate (701) is 5mm, and when the adjusting block (505) is positioned in the adjusting hole (402) at the rearmost end, the distance between the bottom of the top plate (501) and the top of the stabilizing block (702) is 5 mm; and a 3mm gap is formed between the outer wall of the top plate (501) and the inner wall of the fixing plate (9).