CN218612226U

CN218612226U - Welding device suitable for double-side welding of two-side ultra-long Z-shaped structure

Info

Publication number: CN218612226U
Application number: CN202222436985.5U
Authority: CN
Inventors: 黄卫; 卢明明; 马羽; 李文强; 吴锐
Original assignee: Shaanxi Aircraft Industry Co Ltd
Current assignee: Shaanxi Aircraft Industry Co Ltd
Priority date: 2022-09-14
Filing date: 2022-09-14
Publication date: 2023-03-14
Anticipated expiration: 2032-09-14

Abstract

The utility model belongs to aviation metal welding field especially involves the welding set who is applicable to both sides overlength Z style of calligraphy structure double-side welding, the device includes clamp plate, first cushion, second cushion, first cushion and second cushion are placed respectively in treating welding part rib both sides cavity, the clamp plate with first cushion, treat that welding part, second cushion compress tightly fixedly. The utility model discloses properly reduced both sides overlength Z style of calligraphy structure part friction stir welding and warp, guaranteed the geometric tolerances and the relative position tolerance of welded assembly around the welding, ensured the final assembly precision of spare part. The welding process difficulty can be greatly reduced, the production process is simplified, the tool fixture is universal, the production efficiency is greatly improved, the tool manufacturing cost is reduced, and the production period is ensured; the problem of the both sides of part overlength Z style of calligraphy friction stir welding after deformation is solved, guaranteed the stability of welding seam quality, improved the part qualification rate.

Description

Welding device suitable for double-side welding of two-side ultra-long Z-shaped structure

Technical Field

The utility model belongs to the technical field of the aeronautical manufacturing, a welding set and welding method suitable for both sides overlength Z style of calligraphy structure double-sided welding is related to.

Background

In the design of an aeronautical structure, the aeronautical structure has an overlength Z-shaped structure on two sides, wherein the Z shape

When the two-side ultra-long Z-shaped structure double-side weld joint is subjected to friction stir welding in the prior art, if a mode of the original welding technology, which is disclosed in Chinese patent publication No. CN201710128922.4, is adopted, a set of special tools is required to be adopted for implementation, and in the welding process, because the shape of a part to be welded limits the ultra-long cushion block, the cushion block is not easy to be tightly propped and is easy to shift, welding defects are caused slightly, the part is scrapped seriously, the welding quality is unstable, and the welding deformation is huge; the novel process method reduces the welding deformation of the parts, ensures the stability of the welding quality of the welding line, and improves the qualification rate and the production efficiency of the parts; secondly, the existing process optimizes the welding procedure, realizes the universality of the tool and reduces the manufacturing cost of the tool.

When the side edge distance is smaller during the welding of the friction stir welding cavity structure, in order to simplify the processing process and ensure the processing quality, an integrated clamp for folding, pressing and jacking is adopted. The welding cushion block that now adopts does not consider that there is certain tolerance in the thickness when the part adds man-hour during the design, often appears cushion and part laminating not good, welding cushion and the difficult top of clamp plate tightly and produce the problem of aversion easily in the use, leads to light then to cause welding defect, and heavy then leads to the part to scrap, and welding quality is unstable, welding deformation is huge.

SUMMERY OF THE UTILITY MODEL

Solves the technical problem

The two sides of the overlong Z-shaped structure in the large freight aircraft floor cavity structure have the advantages that when the structure is welded, the conventional design mode is not easy to move due to poor fit between the cushion block and a part and difficult jacking of the welding cushion block and the welding pressing plate, and the welding defects of the part are avoided. The production process is simplified, the labor productivity is improved, and the production cost is reduced.

The technical scheme of the utility model is that: for parts to be welded with the overlong Z-shaped structures on two sides of the two cavities, the two cavities are formed, the height-adjustable cushion blocks and the cushion blocks are installed in the cavities of the parts to be welded before the parts are welded, the fitting degree between the cushion blocks and the parts is adjusted by rotating the adjusting bolts according to the fitting condition of the inner surface of the cavity and the surface of the device, and the pressure arms of the welding tool are pressed on the pinch plate to ensure that the parts are stressed uniformly so as to prevent the parts from generating large deformation in the welding process.

Welding set suitable for overlength Z style of calligraphy structure double-sided welding in both sides, the device includes clamp plate, first cushion, second cushion, place respectively in waiting to weld part rib both sides cavity first cushion and second cushion, the clamp plate compresses tightly fixedly first cushion, the part of waiting to weld, second cushion.

Furthermore, the pressing plate is of a plate-shaped structure, one end of the pressing plate is provided with a limiting plate, the other end of the pressing plate is provided with a boss, the boss is provided with a threaded hole, and a screw is configured to realize compression and fixation.

Furthermore, a through groove is formed in the surface of the pressing plate, and the through groove is used for limiting the welding position.

Furthermore, the first cushion block is a height-adjustable cushion block.

Furthermore, the height-adjustable cushion block is formed by combining two trapezoidal blocks, and the height of the upper end face of the height-adjustable cushion block is adjusted by the adjusting screw so as to be matched with an area to be welded at the upper end of a part to be welded.

Furthermore, a guide slide rail is arranged between the two trapezoidal blocks in the height-adjustable cushion block, and a limiting plate is arranged on the side face of the height-adjustable cushion block so as to ensure that the height-adjustable cushion block is always positioned on the same plane in the height adjusting process.

Furthermore, the end parts of the pressing plate, the first cushion block and the second cushion block are all subjected to chamfering treatment, so that the parts to be welded are prevented from being scratched.

Furthermore, the second cushion block is of an I-shaped structure, a step is arranged at the end of the second cushion block, and the step is matched with a region to be welded at the lower end of the part to be welded.

Advantageous effects

When the device is installed during welding of the friction stir welding cavity, the adjustable cushion block can be maintained according to the height of the cavity, the pressing plate is installed after the cushion block is installed, and the height-adjustable base plate is tightly jacked by adjusting the position of the jacking block through adjusting the length of the nut on the pressing plate. Thereby ensuring the form and position tolerance and the relative position tolerance of the welding assembly before and after welding and ensuring the final assembly precision of parts; and the welding quality is ensured. When assembling and welding are carried out, welding stress and cold-hot deformation often cause the relative position of each part to be inaccurate, and the welding tool clamp can control the direction of the stress and the deformation through positioning and locking positions.

The utility model adopts a new welding method to match with the welding tool scheme, and utilizes the integrated functions of the folding, pressing and jacking of the auxiliary welding tool to realize accurate positioning and clamping of the parts to be welded, so as to realize high-efficiency processing of double-sided welding seams of overlong Z-shaped structures on two sides and eliminate welding deformation of the parts by reverse welding, effectively ensure the stability of the welding quality of the welding seams, and improve the qualification rate and the production efficiency of the parts; secondly, the existing process method realizes the universality of the tool and reduces the manufacturing cost of the tool. Thirdly, the new process method ensures the stability of the quality of the welding seam and improves the production quality and efficiency.

Drawings

The utility model comprises 4 figures, the drawings of which are explained as follows:

figure 1 is a view of a press plate,

figure 2 is a view of a height adjustable spacer,

figure 3 is a view of the head block,

FIG. 4 is a diagram of the mounting positions of height adjustable spacers and spacers;

wherein, 1-pressing plate, 2-height adjustable cushion block, 3-cushion block, and 4-part to be welded.

Detailed Description

The welding device suitable for double-side welding of the overlong Z-shaped structure on two sides, which is provided by the utility model, is explained in detail by combining the accompanying drawings of the specification below, referring to fig. 1-4, the specifically designed welding device comprises a height-adjustable cushion block 2, a welding cushion block 3 and a pressing plate 1, and when the welding device is used, the height-adjustable cushion block 2 and the welding cushion block 3 are respectively arranged in spaces on two sides of a rib of a part 4 to be welded, and the height of the height-adjustable cushion block 2 is adjusted, so that the upper end surface is propped against a region to be welded of the part 4 to be welded; the end part of the welding cushion block 3 is provided with a step which is matched with a to-be-welded area at the lower end of the to-be-welded part 4, and the pressing plate 1 is buckled on the to-be-welded part 4; and fixing the height-adjustable cushion block 2, the welding cushion block 3 and the part 4 to be welded together by a fixture.

The specific using process is as follows:

firstly, mounting a height-adjustable cushion block 2 at a part to be welded;

secondly, observing a fit clearance between the device and the part 4 to be welded;

thirdly, adjusting the nut on the height-adjustable cushion block 2 in a rotating mode according to the size of the gap, enabling the sliding ejector block to move to a proper position to jack the upper ejector block, and guaranteeing that the upper ejector block is completely attached to the part without the gap;

step four, mounting the welding cushion block 3 in the cavity on the other side;

step five, after the butt joint gap of the edge to be welded is adjusted, the pressing plate 1 is buckled and pressed on the part, and the tool and the part are tightly propped through an adjusting nut after the installation position is adjusted;

and step six, welding the parts after the working procedures are finished.

After the device is installed during welding of the friction stir welding cavity, the height of the device can be adjusted according to the height of the cavity to ensure the form and position tolerance and the relative position tolerance of a welding assembly before and after welding, and then a cushion block and a pressing plate are installed to ensure the final assembly precision of parts; and the welding quality is ensured. When assembling and welding are carried out, welding stress and cold-hot deformation often cause the relative position of each part to be inaccurate, and the welding tool clamp can control the direction of the stress and the deformation through positioning and locking positions. The welding receiving, pressing and jacking integrated fixture can guarantee form and position tolerance and relative position tolerance of a welding assembly before and after welding, guarantee final assembly precision of parts and can guarantee welding quality. The welding process difficulty can be greatly reduced, the production process is simplified, the labor productivity is improved, and the production cost is reduced.

The above detailed description or the examples are only used for explaining the technical solution of the present invention, and are not intended to limit the present application, and the parts not described in detail are all regarded as the conventional technical means or common general knowledge in the art; those of ordinary skill in the art will understand that: based on the design idea of the present application, it should be able to make adaptive modifications to the technical solutions described in the foregoing embodiments, or make equivalent substitutions to some or all of the technical features, and these modifications or substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. The welding device is suitable for double-side welding of the overlong Z-shaped structures on two sides and is characterized by comprising a pressing plate, a first cushion block and a second cushion block, wherein the first cushion block and the second cushion block are respectively placed in cavities on two sides of a rib of a part to be welded, and the pressing plate presses and fixes the first cushion block, the part to be welded and the second cushion block.

2. The welding device suitable for double-sided welding of two sides of an overlong Z-shaped structure as claimed in claim 1, wherein the pressing plate is of a plate-shaped structure, one end of the pressing plate is provided with a limiting plate, the other end of the pressing plate is provided with a boss, the boss is provided with a threaded hole, and a screw is configured to realize compression fixation.

3. The welding device suitable for double-side welding of the two-side overlong Z-shaped structure as claimed in claim 2, wherein a through groove is formed in the surface of the pressure plate, and the through groove is used for limiting a welding position.

4. The welding device suitable for double-sided welding of two sides of an overlength zigzag structure of claim 1, wherein the first cushion block is a height-adjustable cushion block.

5. The welding device suitable for double-sided welding of the two sides of the overlong Z-shaped structure as claimed in claim 4, wherein the height-adjustable cushion block is formed by combining two trapezoidal blocks, and the height of the upper end face is adjusted through an adjusting screw.

6. The welding device suitable for double-sided welding of the overlong Z-shaped structures on two sides as claimed in claim 5, wherein a guide slide rail is arranged between two trapezoidal blocks in the height-adjustable cushion block, and a limiting plate is arranged on the side surface of the height-adjustable cushion block so as to ensure that the height-adjustable cushion block is always positioned on the same plane in the height adjusting process.

7. The welding device suitable for double-sided welding of the two-sided overlong Z-shaped structure as claimed in claim 1, wherein the ends of the pressure plate, the first cushion block and the second cushion block are rounded.

8. A welding device suitable for double-sided welding of two sides of an overlong Z-shaped structure as claimed in claim 1 or 7, wherein the second cushion block is in an I-shaped structure, and the end part of the second cushion block is provided with a step which is matched with a region to be welded at the lower end of a part to be welded.