CN219598575U

CN219598575U - Laser welding fixture for thin-wall part of aircraft engine in blocks

Info

Publication number: CN219598575U
Application number: CN202321836282.XU
Authority: CN
Inventors: 陈宏祥; 李兵; 龙超
Original assignee: Sichuan Ande Technology Co ltd
Current assignee: Sichuan Ande Technology Co ltd
Priority date: 2023-07-13
Filing date: 2023-07-13
Publication date: 2023-08-29
Anticipated expiration: 2033-07-13

Abstract

The utility model discloses a blocking laser welding fixture for an aircraft engine thin-wall part, which relates to the technical field of welding of aircraft engine thin-wall parts. According to the utility model, the positioning rings which can be lifted by the electric telescopic rods are arranged on the outer walls of the eight groups of pressing plates, the positioning rings are connected with the pressing plates through the positioning inner convex blocks and the positioning sliding grooves, when the positioning rings move to one end of a workpiece to be welded, which is far away from the bottom plate, along the positioning sliding grooves, a good positioning effect can be formed, the phenomenon that the workpiece to be welded is deformed after being welded at one end of the workpiece to be welded, which is far away from the bottom plate, is avoided, the upper and lower dimensions are kept consistent, the later shaping times are reduced, the production efficiency is improved, and when the laser welding head is close to the positioning rings, the positioning rings can be driven to move up and down through the stretching and retracting of the stretching shaft of the electric telescopic rods so as to let the laser welding head be positioned.

Description

Laser welding fixture for thin-wall part of aircraft engine in blocks

Technical Field

The utility model relates to the technical field of welding of thin-wall parts of aircraft engines, in particular to a blocking laser welding fixture for the thin-wall parts of the aircraft engines.

Background

Because the circumferential dimension of the thin-wall workpiece of the aircraft engine is large and is limited by thermoforming equipment, the part needs to be subjected to block forming during thermoforming, then the block-formed parts are welded to form a complete revolving body part, a conventional welding fixture mainly comprises a base, a molded surface positioning plate and a support, the welding fixture is used for clamping, when the large revolving body part is welded, the phenomenon of wrinkling or bulging occurs at two sides of a welding line, and therefore the quality of the produced part is poor, and the part can be produced only by carrying out shaping for many times in the later period due to the large deformation of the welding;

in order to solve the problem, the block welding fixture for the titanium alloy special-shaped revolving body thin-wall part is proposed heretofore, and comprises a base, a positioning plate, a supporting plate and a pressing plate, wherein the positioning plate, the supporting plate and the pressing plate are arranged on the base;

however, in practical use, the improvement technology still has a certain defect that the bottom of the positioning plate for supporting is connected with the base through the supporting plate, but the upper part of the positioning plate is in a suspended state, and the processed part easily has the problem that the size of one end close to the base is smaller than that of one end far away from the base, namely, the supporting force of one end of the part far away from the base is insufficient, so that the deformation after welding is caused, and therefore, the improvement on the thin-wall part blocking laser welding clamp of the aircraft engine is necessary.

Disclosure of Invention

The utility model aims to solve the defects in the prior art, and provides a blocking laser welding fixture for an aircraft engine thin-wall part.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides an aircraft engine thin wall spare piecemeal laser welding anchor clamps, includes the bottom plate, waits to weld the work piece, wait to weld the work piece by four sets of solid of revolution split joint is the annular concatenation and forms, four sets of solid of revolution split joint department forms four welds, the bottom plate upper wall is through four sets of interior fagging fixedly connected with four sets of locating plates, four sets of locating plate combination forms annular and annular circumference outer wall and wait to weld the work piece inside wall size and coincide, wait to weld the work piece and hug closely at the locating plate outer wall, wait to weld the work piece and compress tightly through eight sets of clamp plates, eight sets of the clamp plates all set up in pairs in the both sides of four welds respectively, eight sets of two sets of adjacent one sides between with between the pair in the clamp plates all are provided with the inclined plane that are used for convenient welding, through hexagonal screw locking between clamp plate, wait to weld the work piece and the locating plate, the bottom plate upper wall just is provided with the retainer plate outside is provided with the retainer plate that is used for improving the effect of compressing tightly, be provided with the drive assembly that is used for driving retainer plate and reciprocates between retainer plate, still be provided with between retainer plate and the bottom plate and the guide ring and the locating plate that keeps stable structure when moving down are used for setting up and between the retainer plate.

As a further description of the above technical solution:

the driving assembly comprises four groups of electric telescopic rods, the four groups of electric telescopic rods are fixedly connected to the lower wall of the bottom plate, the four groups of electric telescopic rod extension shafts penetrate through the bottom plate and extend out to the upper side of the bottom plate, one ends of the electric telescopic rod extension shafts, which are located above the bottom plate, are fixedly connected with the lower wall of the positioning ring, and the four groups of electric telescopic rods are equally distributed circumferentially by taking the center of the bottom plate as the center of a circle under overlooking projection.

As a further description of the above technical solution:

the guide structure comprises four groups of guide rods, the four groups of guide rods are fixedly connected to the lower wall of the positioning ring, the four groups of guide rods are uniformly distributed in a circumference mode by taking the center of the positioning ring as the center of the circle, and one ends, far away from the positioning ring, of the guide rods penetrate through the bottom plate and are in sliding connection with the bottom plate.

As a further description of the above technical solution:

the positioning structure comprises a positioning lug and a positioning chute, the positioning chute is arranged on one side, far away from a workpiece to be welded, of the pressing plate, the positioning chute is communicated with the lower wall of the pressing plate, and the positioning lug is arranged on the inner side wall of the positioning ring and coincides with the positioning chute under the overlooking projection.

As a further description of the above technical solution:

the junction of the outer wall and the upper wall of the positioning lug is provided with a guide fillet which is used for facilitating the positioning lug to enter the positioning chute.

As a further description of the above technical solution:

the upper wall of the bottom plate is provided with a containing groove sunken in the upper surface of the bottom plate, and the size of the positioning ring is consistent with that of the containing groove under overlooking projection.

The utility model has the following beneficial effects:

compared with the prior art, this aircraft engine thin-wall spare piecemeal laser welding anchor clamps sets up the retainer plate that can go up and down through electric telescopic handle at eight group's clamp plate outer walls to bump in the location, the retainer plate is connected with the clamp plate through location spout, after the retainer plate moves the one end that the bottom plate was kept away from to the work piece of waiting to weld along the location spout, can form better positioning action, avoid waiting to weld the work piece and keep away from the phenomenon that appears warping after the one end welding of bottom plate, upper and lower size keeps unanimous, reduce later shaping number of times, improve production efficiency, during the welding, in order to avoid the retainer plate to interfere the laser welding head, thereby the position is let for the laser welding head to the extension and the withdrawal drive retainer plate of accessible electric telescopic handle extension shaft when the laser welding head is close to the retainer plate.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a laser welding fixture for blocking thin-walled parts of an aircraft engine;

FIG. 2 is an enlarged view of part of the laser welding fixture for the thin-walled part of the aircraft engine according to the present utility model;

FIG. 3 is a schematic diagram of a partial structure of a bottom plate and a containing groove of the block laser welding fixture for the thin-walled part of the aircraft engine;

fig. 4 is a schematic diagram of a local structure of a positioning ring and a positioning lug of the block laser welding fixture for the thin-walled part of the aircraft engine.

Legend description:

1. a bottom plate; 2. an inner support plate; 3. a positioning plate; 4. splitting the revolving body; 5. a pressing plate; 6. a guide rod; 7. an electric telescopic rod; 8. a positioning ring; 9. an inclined plane; 10. welding seams; 11. positioning the protruding blocks; 12. positioning a chute; 13. a receiving groove; 14. guiding the round angle.

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 4, the present utility model provides an aircraft engine thin-wall part blocking laser welding fixture: the welding device comprises a bottom plate 1 and a workpiece to be welded, wherein the workpiece to be welded is formed by annularly splicing four groups of revolution body split pieces 4, four welding seams 10 are formed at the splicing positions of the four groups of revolution body split pieces 4, the upper wall of the bottom plate 1 is fixedly connected with four groups of positioning plates 3 through four groups of inner supporting plates 2, the four groups of positioning plates 3 are combined to form a circular ring, the circular ring-shaped circumferential outer wall is identical with the inner side wall of the workpiece to be welded in size, the workpiece to be welded is tightly attached to the outer wall of the positioning plates 3, and when in welding, the four groups of revolution body split pieces 4 are annularly tightly attached to the outer walls of the four groups of positioning plates 3, and the four welding seams 10 are formed after the four groups of welding seams are spliced;

the workpieces to be welded are tightly pressed by eight groups of pressing plates 5, the eight groups of pressing plates 5 are respectively arranged at two sides of four welding seams 10 in pairs, inclined planes 9 which are used for facilitating welding are arranged at two adjacent sides between the same pairs of the eight groups of pressing plates 5, the workpieces to be welded and the positioning plates 3 are tightly locked by hexagonal screws, after the revolving body split 4 is installed, a group of pressing plates 5 are arranged at the left side and the right side of each welding seam 10 by hexagonal screws, and the revolving body split 4 is tightly pressed on the outer wall of the positioning plates 3 by the pressing plates 5;

the upper wall of the bottom plate 1 and positioned outside the eight groups of pressing plates 5 are provided with positioning rings 8 for improving the pressing effect, the upper wall of the bottom plate 1 is provided with a containing groove 13 sunk on the upper surface of the bottom plate 1, the positioning rings 8 are consistent with the containing groove 13 in size in the overlooking projection, and when the revolving body split 4 and the pressing plates 5 are installed, the positioning rings 8 sink on the lower wall inside the containing groove 13 and do not interfere with installation;

a driving assembly for driving the positioning ring 8 to move up and down is arranged between the positioning ring 8 and the bottom plate 1, the driving assembly comprises four groups of electric telescopic rods 7, the extending shafts of the four groups of electric telescopic rods 7 penetrate through the bottom plate 1 and extend to the upper side of the bottom plate 1, one ends of the extending shafts of the four groups of electric telescopic rods 7, which are positioned above the bottom plate 1, are fixedly connected with the lower wall of the positioning ring 8, the four groups of electric telescopic rods 7 are equally distributed in a circumference mode by taking the center of the bottom plate 1 as the circle center under overlooking projection, the extending shafts of the electric telescopic rods 7 can drive the positioning ring 8 to move upwards, and the retracting shafts of the electric telescopic rods 7 can drive the positioning ring 8 to move downwards;

a guide structure for keeping stability when the positioning ring 8 moves up and down is further arranged between the positioning ring 8 and the bottom plate 1, the guide structure comprises four groups of guide rods 6, the four groups of guide rods 6 are fixedly connected to the lower wall of the positioning ring 8, the four groups of guide rods 6 are uniformly distributed in a circumference mode by taking the center of the positioning ring 8 as a circle center, one ends, far away from the positioning ring 8, of the four groups of guide rods 6 penetrate through the bottom plate 1 and are in sliding connection with the bottom plate 1, and the positioning ring 8 is kept stable when driven to move by the electric telescopic rod 7 through the four groups of guide rods 6;

the positioning structure used for positioning is arranged between the positioning ring 8 and the pressing plate 5, the positioning structure comprises a positioning convex block 11 and a positioning sliding groove 12, the positioning sliding groove 12 is arranged on one side, away from a workpiece to be welded, of the pressing plate 5, the positioning sliding groove 12 is communicated with the lower wall of the pressing plate 5, the positioning convex block 11 is arranged on the inner side wall of the positioning ring 8 and coincides with the lower projection of the positioning sliding groove 12 in a overlooking mode, a guiding circular bead 14 used for facilitating the positioning convex block 11 to enter the positioning sliding groove 12 is arranged at the joint of the outer wall of the positioning convex block 11 and the upper wall, after the pressing plate 5 is installed, the positioning ring 8 is stretched out through an extending shaft of the electric telescopic rod 7 to drive the positioning ring 8 to move upwards, the positioning ring 8 enters the positioning sliding groove 12 through the positioning convex block 11 to limit the pressing plate 5, and tightening of the positioning ring 8 is avoided to deform during welding.

Working principle: during welding, four groups of revolving body split 4 are annularly clung to the outer walls of four groups of positioning plates 3, four welding seams 10 are formed after splicing, after the revolving body split 4 is installed, a group of pressing plates 5 are arranged on the left side and the right side of each welding seam 10 by hexagonal screws, the revolving body split 4 is tightly pressed on the outer walls of the positioning plates 3 by the pressing plates 5, after the pressing plates 5 are installed, the positioning rings 8 are driven to move upwards by extending out shafts of electric telescopic rods 7, the positioning rings 8 enter positioning sliding grooves 12 through positioning convex blocks 11, the pressing plates 5 are limited, and during welding, the deformation is avoided by tightening the positioning rings 8;

the electric telescopic rod 7 stretches out the shaft and can drive the locating ring 8 to move upwards, the electric telescopic rod 7 stretches out the shaft and retracts and can drive the locating ring 8 to move downwards, and the locating ring 8 is kept stable when being driven to move by the electric telescopic rod 7 through the four groups of guide rods 6.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. The utility model provides an aircraft engine thin wall spare piecemeal laser welding anchor clamps, includes bottom plate (1), waits to weld the work piece, wait to weld the work piece and be annular concatenation by four sets of solid of revolution split (4) and form, four sets of solid of revolution split (4) concatenation department forms four welding seams (10), its characterized in that: the upper wall of the bottom plate (1) is fixedly connected with four groups of positioning plates (3) through four groups of inner supporting plates (2), the four groups of positioning plates (3) are combined to form a circular ring shape, the circular ring-shaped circumference outer wall is matched with the size of the inner side wall of a workpiece to be welded, the workpiece to be welded is tightly attached to the outer wall of the positioning plate (3), the workpiece to be welded is tightly pressed through eight groups of pressing plates (5), the eight groups of pressing plates (5) are respectively arranged at two sides of four welding seams (10) in pairs, inclined planes (9) which are used for facilitating welding are respectively arranged at two adjacent sides between the same pair of pressing plates (5), the novel welding fixture is characterized in that the pressing plate (5), the workpiece to be welded and the positioning plate (3) are locked through hexagonal screws, positioning rings (8) used for improving the pressing effect are arranged on the upper wall of the bottom plate (1) and located on the outer side of the eight groups of pressing plates (5), driving components used for driving the positioning rings (8) to move up and down are arranged between the positioning rings (8) and the bottom plate (1), a stable guide structure used for keeping the positioning rings (8) to move up and down is further arranged between the positioning rings (8) and the bottom plate (1), and a positioning structure used for positioning is arranged between the positioning rings (8) and the pressing plate (5).

2. The aircraft engine thin-walled part blocking laser welding fixture of claim 1, wherein: the driving assembly comprises four groups of electric telescopic rods (7), the four groups of electric telescopic rods (7) are fixedly connected to the lower wall of the bottom plate (1), the four groups of electric telescopic rods (7) extend out of the shaft and penetrate through the bottom plate (1) and extend out of the shaft to the upper portion of the bottom plate (1), one end, located above the bottom plate (1), of each electric telescopic rod (7) extends out of the shaft and is fixedly connected to the lower wall of the positioning ring (8), and the four groups of electric telescopic rods (7) are equally distributed in a circle mode by taking the center of the bottom plate (1) as the center of the circle under overlooking projection.

3. The aircraft engine thin-walled part blocking laser welding fixture of claim 2, wherein: the guide structure comprises four groups of guide rods (6), the four groups of guide rods (6) are fixedly connected to the lower wall of the positioning ring (8), the four groups of guide rods (6) are equally distributed in the circumference with the center of the positioning ring (8) as the circle center, and one ends, far away from the positioning ring (8), of the guide rods (6) penetrate through the bottom plate (1) and are slidably connected with the bottom plate.

4. The aircraft engine thin-walled part blocking laser welding fixture according to claim 3, wherein: the positioning structure comprises a positioning lug (11) and a positioning chute (12), wherein the positioning chute (12) is arranged on one side, far away from a workpiece to be welded, of the pressing plate (5), the positioning chute (12) is communicated with the lower wall of the pressing plate (5), and the positioning lug (11) is arranged on the inner side wall of the positioning ring (8) and coincides with the positioning chute (12) under the overlooking projection.

5. The aircraft engine thin-walled part blocking laser welding fixture of claim 4, wherein: the joint of the outer wall and the upper wall of the positioning lug (11) is provided with a guiding fillet (14) which is used for facilitating the positioning lug (11) to enter the positioning chute (12).

6. The aircraft engine thin-walled part blocking laser welding fixture of claim 5, wherein: the upper wall of the bottom plate (1) is provided with a containing groove (13) sunk on the upper surface of the bottom plate (1), and the size of the positioning ring (8) is consistent with that of the containing groove (13) in the overlooking projection.