CN221695583U - Anti-splashing and anti-deformation tool for multi-blade electron beam welding - Google Patents

Abstract

The utility model discloses an anti-splashing and anti-deformation tool for multi-blade electron beam welding, which belongs to the technical field of blade welding and comprises a chassis and a lower flange pressing ring, wherein a lower flange of a casing is placed on the chassis, and the lower flange pressing ring can be connected to the chassis to press the lower flange; an upper flange pressing ring is connected to the upper flange of the casing, a plurality of baffle ring connecting holes are formed in the inner side wall of the upper flange pressing ring, and a circle of baffle rings are connected through the baffle ring connecting holes; the novel blade protecting device comprises a blade, and is characterized by further comprising a plurality of protecting sheets, wherein the protecting sheets are provided with profiling holes, the profiling holes are matched with the blade shapes of the blade, the protecting sheets are sleeved on the blade through the profiling holes, and the protecting sheets can be limited between the baffle ring and the casing. The utility model can prevent the electron beam from splashing and avoid the welding deformation from damaging the blade.

Description

A spatter-proof and deformation-proof tool for multi-blade electron beam welding

Technical Field

The utility model relates to the technical field of blade welding, in particular to an anti-splash and anti-deformation tool used for electron beam welding of multiple blades.

Background Art

Electron beam welding is widely used in aerospace, atomic energy, national defense, military and other fields due to its advantages such as self-melting, no need for fillers, low oxidation, and small thermal deformation. Electron beam has strong penetration ability. The structure, material, and matching clearance of the product will affect the adjustment of welding parameters. Before formal welding, the specimen is usually used for controlled variable method test to select parameters with good surface forming, low heat input, and small spatter.

When producing aviation rectifier stator assemblies, the assembly requires more than 100 blades to be embedded in the outer casing through electron beam welding. After welding, it is necessary to ensure that there is no spatter on the blades. However, spatter generated by electron beam welding is an objective phenomenon recognized by the industry, and aviation products have high requirements for surface quality. For example, pliers and grinding of the blades will affect the appearance quality of the blades. Therefore, the blades need to be protected during welding to ensure the surface quality of the blades.

In this solution, a lower flange is provided at the bottom of the casing and an upper flange is provided at the top of the casing. One end of all blades is embedded in the casing and needs to be welded, and the other end of all blades is embedded in an inner ring. Although electron beam welding has less heat input and less product deformation after welding than other types of welding, the cumulative welding volume of more than 100 blades is large, which is also a challenge to controlling the deformation of the product.

In view of the above-mentioned problems existing in the prior art, the utility model combines many years of design and use experience in related fields, supplemented by strong professional knowledge, and designs and manufactures an anti-splash and anti-deformation tooling for multi-blade electron beam welding to overcome the above-mentioned defects.

Utility Model Content

In order to solve the problems existing in the prior art, the utility model provides an anti-splash and anti-deformation tool for electron beam welding of multiple blades, which can not only prevent the electron beam from splashing, but also avoid welding deformation and damage to the blades.

In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows: an anti-splash and anti-deformation tool for multi-blade electron beam welding, comprising a chassis and a lower flange pressure ring, the lower flange of the casing is placed on the chassis, and the lower flange pressure ring can be connected to the chassis to press the lower flange;

An upper flange pressure ring is connected to the upper flange of the casing, and a plurality of retaining ring connecting holes are arranged on the inner side wall of the upper flange pressure ring, through which a circle of retaining rings is connected;

It also includes a plurality of protective sheets, each of which is provided with a contoured hole, the contoured hole matches the blade shape, the protective sheet is sleeved on the blade through the contoured hole, and the protective sheet can be limited between the retaining ring and the casing.

Preferably, the chassis comprises an upper chassis and a lower chassis, the outer diameter of the upper chassis is smaller than the outer diameter of the lower chassis, the upper chassis is connected to the lower chassis, and the casing is installed between the upper chassis and the lower chassis;

The centers of the upper chassis and the lower chassis are both provided with through holes, the through holes are provided with a central axis, and the central axis can be connected to an electron beam welding machine.

Preferably, a raised ring is provided on the lower chassis, the raised ring can support the lower flange, a positioning boss is provided at the bottom of the lower flange, and the inner side of the raised ring can cooperate with the positioning boss to position the lower flange;

An upper step is provided on the upper chassis, and the outer side of the upper step can cooperate with the inner side of the inner ring to position the inner ring.

Preferably, the protective sheet is provided with an opening, and the opening passes through the side of the protective sheet to the contoured hole;

The opening is arranged at the end of the long side of the profiled hole.

Preferably, a gap is provided between the contoured hole and the blade.

Preferably, a plurality of long slot holes are evenly distributed on the circumference of the upper flange pressure ring, and the positions of the long slot holes correspond to the positions of the connection holes on the upper flange;

The long slot hole is arranged along the radial direction of the upper flange pressure ring.

Preferably, a small-diameter boss is provided on the lower end surface of the upper flange pressing ring, and the outer diameter of the small-diameter boss is smaller than the outer diameter of the upper flange pressing ring;

The small-diameter boss can be stuck in the inner hole of the upper flange.

Preferably, the baffle ring is formed by splicing a plurality of arc-shaped baffles.

Preferably, a plurality of bolt holes are evenly distributed on the circumference of the lower flange pressure ring, and the positions of the bolt holes correspond to the positions of the connection holes on the lower flange;

The lower flange pressure ring is also provided with a plurality of threaded holes evenly distributed around the circumference, and the threaded holes are arranged around the outer periphery of the bolt holes;

A supporting bolt is threaded in the threaded hole, and the head of the supporting bolt abuts against the chassis.

Preferably, the lower flange pressing ring is formed by splicing a plurality of arc-shaped lower flange pressing blocks.

The utility model is beneficial in that:

1. The utility model provides a protective sheet with a profiled hole sleeve on the blade, which effectively blocks the electron beam splash and ensures the surface quality of the blade after welding. The protective sheet is cut from a thin plate, has low cost, is easy to process, easy to install, and has strong versatility.

2. The utility model provides an opening on the protective sheet, and the opening is arranged at the end of the long side of the contoured hole, so that the installation and removal of the protective sheet are facilitated through the opening.

3. The utility model can also be applied to other types of thin-walled multi-blade electron beam welding components. The protective plates can be designed with contoured holes according to different blade shapes. It is low-cost and easy to install. When the number of blades is dense, the protective plates can be overlapped without affecting the use.

4. The retaining ring and the casing of the utility model can limit the position of the protective sheet, thereby improving the protective effect of the protective sheet, and the retaining ring can be disassembled during the welding process. After disassembly, the welding quality and forming condition of the weld can be observed, so that the welding state can be adjusted in time.

5. The upper flange pressure ring and the lower flange pressure ring of the utility model can effectively enhance the structural strength of the thin-walled parts of the casing, reduce the deformation and thermal shrinkage, reduce the difficulty of subsequent machining, and save costs. The long slot hole of the upper flange pressure ring also takes into account the offset of the thermal expansion changes caused by the post-weld heat treatment.

6. When the materials of the components to be welded in the utility model are relatively high-cost materials such as high alloys and titanium alloys, the tooling can be made of cheaper stainless steel, carbon steel, etc., with low production costs without reducing the effect. The whole set of tooling is easy to install and has strong replaceability.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a partial schematic diagram of an assembly to be welded;

FIG2 is a top view of the assembly to be welded;

FIG3 is a front view of an anti-splash and anti-deformation tool for multi-blade electron beam welding;

FIG4 is a schematic structural diagram of an anti-splash and anti-deformation tool for multi-blade electron beam welding;

FIG5 is a cross-sectional view of an anti-splash and anti-deformation tool for multi-blade electron beam welding;

FIG6 is a partial cross-sectional view of an anti-splash and anti-deformation tool for multi-blade electron beam welding;

FIG7 is a top view of the chassis of the utility model;

Fig. 8 is a cross-sectional view of the chassis A-A of the utility model;

FIG9 is a top view of the upper flange pressure ring of the utility model;

Figure 10 is a cross-sectional view of the upper flange pressure ring of the utility model;

FIG11 is a partial schematic diagram of the upper flange pressure ring of the utility model;

FIG12 is a top view of the lower flange pressure ring of the utility model;

FIG13 is a partial schematic diagram of the lower flange pressure ring of the utility model;

FIG14 is a front view of the protective sheet of the utility model;

FIG. 15 is a schematic diagram of the protective sheet of the utility model installed on the blade.

In the figure: 1-casing, 2-lower flange, 3-upper flange, 4-inner ring, 5-blade, 6-positioning boss, 7-lower chassis, 8-lower flange pressure ring, 9-upper flange pressure ring, 10-retaining ring, 11-center axis, 12-upper chassis, 13-protective sheet, 71-raised ring, 81-bolt hole, 82-threaded hole, 91-long slot hole, 92-small diameter boss, 93-retaining ring connecting hole, 121-upper step, 131-profile hole, 132-opening.

DETAILED DESCRIPTION

In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

As shown in Figures 1 to 15, an anti-splash and anti-deformation tool for multi-blade electron beam welding includes a chassis and a lower flange pressing ring 8. The lower flange 2 of the casing 1 is placed on the chassis, and the lower flange pressing ring 8 can be connected to the chassis to press the lower flange 2 of the casing 1, and the upper flange pressing ring 9 is connected to the upper flange 3 of the casing 1. The structural strength of the thin-walled parts of the casing 1 can be effectively enhanced by the upper flange pressing ring 9 and the lower flange pressing ring 8, reducing the deformation and thermal shrinkage, and reducing the processing difficulty for subsequent machining.

Furthermore, the utility model has a plurality of retaining ring connecting holes 93 on the inner side wall of the upper flange pressure ring 9, through which a circle of retaining ring 10 is connected, and the retaining ring 10 is preferably composed of a plurality of arc-shaped baffles, and also includes a plurality of protective sheets 13, and the protective sheets 13 are provided with profiling holes 131, and the profiling holes 131 match the leaf shape of the blade 5, and the protective sheets 13 are sleeved on the blade 5 through the profiling holes 131, and the protective sheets 13 can be limited between the retaining ring 10 and the casing 1.

The utility model provides a protective sheet 13 with a contoured hole 131 which is sleeved on the blade 5, effectively blocking the electron beam splashing and ensuring the surface quality of the blade 5 after welding. The protective sheet 13 is cut from a thin plate, has low cost, is easy to process, is easy to install, and has strong versatility.

In addition, the position of the protective sheet 13 can be limited by the retaining ring 10 and the casing 1, thereby improving the protective effect of the protective sheet 13. Moreover, the retaining ring 10 can be disassembled during the welding process, and the welding quality and forming condition of the weld can be observed after disassembly, so as to adjust the welding state in time.

The protective sheet 13 of the utility model is preferably provided with an opening 132, which passes through the side of the protective sheet 13 to the contoured hole 131, and the opening 132 is arranged at the end of the long side of the contoured hole 131. Since the blades 5 on the casing 1 are relatively dense, the installation and removal of the protective sheet 13 are facilitated through the opening 132.

A gap is preferably provided between the contoured hole 131 and the blade 5 , and the gap is preferably controlled at 0.5 mm. The protective sheet 13 can move with the blade 5 within a certain range to prevent the blade 5 from shrinking during welding and damaging the blade 5 .

The chassis of the utility model is located at the bottom of the assembly to be welded, and is used for assembling, positioning, clamping and fixing the assembly to be welded. The chassis specifically includes an upper chassis 12 and a lower chassis 7. The outer diameter of the upper chassis 12 is smaller than the outer diameter of the lower chassis 7. The upper chassis 12 is connected to the lower chassis 7 by bolts, and the casing 1 is installed between the upper chassis 12 and the lower chassis 7. Through holes are provided in the centers of the upper chassis 12 and the lower chassis 7, and a central shaft 11 is provided in the through hole, and an electron beam welder can be connected to the central shaft 11.

The lower chassis 7 of the utility model is provided with a raised ring 71, which can support the lower flange 2. The bottom of the lower flange 2 is provided with a positioning boss 6. The inner side of the raised ring 71 can cooperate with the positioning boss 6 to position the lower flange 2. The above structure not only positions the lower flange 2 through the raised ring 71, but also prevents the deformation phenomenon that may occur during the welding of the casing 1. The upper chassis 12 of the utility model is provided with an upper step 121. The outer side of the upper step 121 can cooperate with the inner side of the inner ring 4 to position the inner ring 4, thereby completing the positioning and fixing of the inner ring 4.

The upper flange pressing ring 9 and the lower flange pressing ring 8 of the utility model are annular structures for controlling the deformation of the casing 1, which can prevent flanging during the welding process and weaken the axial and radial shrinkage trends. The upper flange pressing ring 9 mainly functions to control the flanging deformation of the upper flange 3. A plurality of long slot holes 91 are evenly distributed on the circumference of the upper flange pressing ring 9. The long slot holes 91 are arranged along the radial direction of the upper flange pressing ring 9. The positions of the long slot holes 91 correspond to the positions of the connecting holes on the upper flange 3. The upper flange pressing ring 9 is connected to the upper flange 3 by bolts through the long slot holes 91. The long slot holes 91 of the utility model can prevent the casing 1 from being damaged by relative sliding due to the different thermal expansion coefficients of the tooling after welding.

The lower end surface of the upper flange pressing ring 9 is preferably provided with a small-diameter boss 92, the outer diameter of which is smaller than that of the upper flange pressing ring 9. The small-diameter boss 92 can be stuck in the inner hole of the upper flange 3. The small-diameter boss 92 can prevent the upper flange 3 from radially shrinking during welding.

The utility model has a plurality of bolt holes 81 evenly distributed on the circumference of the lower flange pressing ring 8, and the positions of the bolt holes 81 correspond to the positions of the connecting holes on the lower flange 2. The lower flange 2 can be pressed between the upper flange pressing ring 9 and the chassis by tightening the bolts, thereby controlling the flanging and axial shrinkage problems of the lower flange 2 caused by welding.

The lower flange pressure ring 8 is also provided with a plurality of threaded holes 82 evenly distributed around the circumference. The threaded holes 82 are arranged on the periphery of the bolt holes 81. Support bolts are threaded in the threaded holes 82. The heads of the support bolts are against the chassis. The support bolts of the utility model can provide an upward supporting force. Combined with the downward clamping force provided by the clamping bolts, the two cooperate to make the contact surfaces of the lower flange pressure ring 8 and the lower flange 2 fit tightly and tighten.

The lower flange pressing ring 8 of the utility model is preferably formed by splicing several arc-shaped lower flange pressing blocks, which can avoid the problem of difficulty in processing due to the lower flange pressing ring 8 being too large. In this embodiment, the lower flange pressing ring 8 is formed by splicing three arc-shaped lower flange pressing blocks.

The specific working process of this utility model:

The lower flange pressing ring 8 flattens the lower flange 2 of the casing 1 and fixes it on the chassis, controlling the flanging and axial contraction of the lower flange 2;

The upper flange pressing ring 9 is connected to the upper flange 3 of the casing 1 by bolts to make up for the weakness of the thin wall strength of the casing 1 itself and control the flanging of the upper flange 3. The small-diameter boss 92 on the upper flange pressing ring 9 can control the radial contraction of the upper flange 3. The oblong hole on the end surface of the upper flange pressing ring 9 can prevent the casing 1 from sliding relative to the tooling due to the different thermal expansion coefficients after welding, which can damage the casing 1.

The inner wall of the upper flange pressure ring 9 is connected with a circle of retaining ring 10 by bolts, so that the range of motion of the protective sheet 13 can be limited between the casing 1 and the retaining ring 10;

When installing, the protective sheet 13 is put on the blade 5 through the contoured hole 131. The setting of the opening 132 can facilitate disassembly and assembly. The protective sheet 13 can move relatively with the blade 5 within a limited range, which can not only prevent electron beam splashing, but also avoid welding deformation and damage to the blade 5, thereby ensuring the surface quality of the blade 5.

It should be understood that the purpose of these embodiments is only to illustrate the utility model and is not intended to limit the protection scope of the utility model. In addition, it should also be understood that after reading the technical content of the utility model, those skilled in the art can make various changes, modifications and/or variations to the utility model, and all of these equivalent forms also fall within the protection scope defined by the claims attached to this application.

Claims (10)

1. The anti-splashing and anti-deformation tooling for multi-blade electron beam welding is characterized by comprising a chassis and a lower flange pressing ring (8), wherein the lower flange (2) of a casing (1) is placed on the chassis, and the lower flange pressing ring (8) can be connected to the chassis to press the lower flange (2);

An upper flange pressing ring (9) is connected to an upper flange (3) of the casing (1), a plurality of baffle ring connecting holes (93) are formed in the inner side wall of the upper flange pressing ring (9), and a circle of baffle rings (10) are connected through the baffle ring connecting holes (93);

Still include a plurality of guard plates (13), be equipped with profile modeling hole (131) on guard plates (13), profile modeling hole (131) match with blade (5) leaf shape, guard plates (13) cup joint on blade (5) through profile modeling hole (131), guard plates (13) can be spacing keep off between ring (10) and receiver (1).

2. A splash and deformation preventing tooling for multi-lobe electron beam welding according to claim 1, wherein the chassis comprises an upper chassis (12) and a lower chassis (7), the outer diameter of the upper chassis (12) is smaller than the outer diameter of the lower chassis (7), the upper chassis (12) is connected to the lower chassis (7), and the casing (1) is installed between the upper chassis (12) and the lower chassis (7);

The center of the upper chassis (12) and the center of the lower chassis (7) are respectively provided with a through hole, a central shaft (11) is arranged in each through hole, and the central shafts (11) can be connected with an electron beam welding machine.

3. The anti-splashing and anti-deformation tool for multi-blade electron beam welding according to claim 2, wherein a raised ring (71) is arranged on the lower chassis (7), the raised ring (71) can support the lower flange (2), a positioning boss (6) is arranged at the bottom of the lower flange (2), and the inner side of the raised ring (71) can be matched with the positioning boss (6) to position the lower flange (2);

An upper step (121) is arranged on the upper chassis (12), and the outer side of the upper step (121) can be matched with the inner side of the inner ring (4) to position the inner ring (4).

4. A splash and deformation preventing tooling for multi-blade electron beam welding according to claim 1, wherein the protective sheet (13) is provided with an opening (132), and the opening (132) penetrates from the side edge of the protective sheet (13) to the profiling hole (131);

The opening (132) is provided at the long-side end of the profiling hole (131).

5. A spatter and deformation preventing tool for multi-blade electron beam welding according to claim 4, wherein a gap is provided between the profiling hole (131) and the blade (5).

6. The anti-splashing and anti-deformation tool for multi-blade electron beam welding according to claim 1, wherein a plurality of long slot holes (91) are uniformly distributed on the circumference of the upper flange pressing ring (9), and the positions of the long slot holes (91) correspond to the positions of connecting holes on the upper flange (3);

the direction of the long slot hole (91) is along the radial direction of the upper flange pressing ring (9).

7. The anti-splashing and anti-deformation tool for multi-blade electron beam welding according to claim 1, wherein a small-diameter boss (92) is arranged on the lower end face of the upper flange pressing ring (9), and the outer diameter of the small-diameter boss (92) is smaller than that of the upper flange pressing ring (9);

the small-diameter boss (92) can be clamped in an inner hole of the upper flange (3).

8. The anti-splashing and anti-deformation tool for multi-blade electron beam welding according to claim 1, wherein the baffle ring (10) is formed by splicing a plurality of arc-shaped baffles.

9. The anti-splashing and anti-deformation tool for multi-blade electron beam welding according to claim 1, wherein a plurality of bolt holes (81) are uniformly distributed on the circumference of the lower flange pressing ring (8), and the positions of the bolt holes (81) correspond to the positions of connecting holes on the lower flange (2);

A plurality of threaded holes (82) are uniformly distributed on the circumference of the lower flange compression ring (8), and the threaded holes (82) are arranged on the periphery of the bolt holes (81);

And a supporting bolt is screwed in the threaded hole (82), and the head of the supporting bolt is propped against the chassis.

10. The anti-splashing and anti-deformation tool for multi-blade electron beam welding according to claim 1, wherein the lower flange pressing ring (8) is formed by splicing a plurality of arc-shaped lower flange pressing blocks.