Detachable welding combined tool for high-precision easily-deformed parts

Abstract

The utility model discloses a detachable welding combination tool for high-precision easily-deformed parts, which comprises an inner die, a plurality of connecting holes, a plurality of connecting rods and a plurality of connecting rods, the outer die surface of the inner die is provided with an avoiding groove for avoiding the work of a welding gun, and the two sides, close to the avoiding groove, of the outer die surface of the inner die are provided with the plurality of connecting holes; the outer mold is located on the outer side of the inner mold, an annular gap for containing a part to be welded is formed between the inner mold face and the outer mold face of the outer mold, a notch for avoiding a welding gun head is formed in the outer mold, and the notch can coincide with the avoiding groove correspondingly; a plurality of penetrating holes coaxial with the connecting holes are formed in the outer mold and correspond to the two sides of the notch, and fasteners are detachably connected into the penetrating holes and the connecting holes; the part positioning gasket is fixed between the inner die and the outer die and limits the distance between the multiple parts, the structure is simple, disassembly, assembly and use are convenient, thermal deformation of the parts to be welded during welding can be avoided, and therefore the welding quality of the high-precision welding parts is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of brazing technology for high-precision easily deformable parts, specifically relating to a detachable welding assembly tooling for high-precision easily deformable parts. Background Technology

[0002] In the field of brazing technology for aerospace components, many parts are prone to deformation during welding due to their complex structure, high precision requirements, and thin walls, such as elastic rings. These parts require brazing after bending, and during the brazing process, they are easily deformed by heat, making it difficult to guarantee the dimensional accuracy and geometric tolerances of the parts according to design standards. Traditionally, brazing of such parts involves clamping them on a workbench and manual assistance. However, for some special high-precision parts, clamping on a workbench cannot effectively control the deformation, making it difficult to guarantee the required precision. Existing manual welding methods are inefficient, processing only one part at a time.

[0003] Therefore, how to provide a high-precision, detachable welding assembly tooling for easily deformable parts is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, the present invention provides a high-precision, easily deformable part detachable welding assembly tooling, which is easy to disassemble, ensures welding quality and dimensional accuracy, and prevents deformation of parts during welding.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a high-precision, easily deformable, detachable welding assembly tooling, comprising:

[0006] The inner mold has an outer mold surface with a clearance groove for the welding gun to work, and multiple connection holes are provided on the outer mold surface and on both sides near the clearance groove.

[0007] An outer mold is located outside the inner mold. There is an annular gap between the inner mold surface and the outer mold surface of the outer mold to accommodate the part to be welded. The outer mold is provided with a notch for avoiding the welding gun head. The notch can coincide with the avoidance groove. The outer mold is provided with multiple through holes coaxial with the connecting holes on both sides of the corresponding notch. Fasteners are disassembled and connected in the through holes and connecting holes.

[0008] Part positioning shims are fixed between the inner mold and the outer mold and limit the spacing between multiple parts.

[0009] The beneficial effects of this utility model are: the inner mold and the outer mold work together to restrict the shape of the parts to be welded. It can be understood that the outer mold surface of the inner mold can be in close contact with the parts to be welded. Specifically, a part positioning shim is added, which can limit the distance and position of multiple parts to be welded, effectively preventing the parts to be welded from deforming due to heat during welding, thereby ensuring the welding accuracy of the parts to be welded. The notch and the clearance groove provide clearance space for the welding gun head to work, effectively ensuring the smooth completion of the welding process. This product can process multiple parts at the same time, with high welding efficiency.

[0010] Preferably, both the inner mold and the outer mold are annular structures, both the outer mold surface and the inner mold surface are cylindrical surfaces, and the gap between the outer mold surface and the inner mold surface is greater than the radial wall thickness of the part to be welded.

[0011] The resulting technical effect is that the inner and outer molds are ring-shaped, which is intended to match the configuration of the parts to be welded, and also facilitates the loading and unloading of the parts to be welded. It should be noted that the gap between the outer mold surface and the inner mold surface is larger than the radial wall thickness of the parts to be welded in order to add positioning shims for the parts later, thereby ensuring the position of multiple parts to be welded is defined.

[0012] Preferably, the part positioning pad is an arc-shaped piece that adapts to the partial shape of the outer mold surface and the inner mold surface. Multiple contoured slots are provided side by side at intervals on the concave sidewall of the part positioning pad. The contoured slots are used to position the part to be welded on the outer mold surface.

[0013] The resulting technical effect is that the part positioning shim is an arc-shaped piece, which can better match the shape of the inner mold surface and the outer mold surface. The part positioning shim can ensure that multiple parts to be welded are tightly attached to the outer mold surface of the inner mold, thereby constraining their shape deformation.

[0014] Preferably, the part positioning shim is provided with a plurality of transition holes for fasteners to pass through, and the thickness of the part positioning shim is the same as the gap between the outer mold surface and the inner mold surface.

[0015] The resulting technical effect is that the part positioning shim is fixed between the inner mold and the outer mold by fasteners, and the thickness of the part positioning shim is the same as the gap between the inner and outer molds, which can ensure the installation stability of the part positioning shim.

[0016] Preferably, there are two part positioning pads distributed on both sides of the relief groove, and the weld joint of the part to be welded is located in the overlapping area of ​​the notch and the relief groove.

[0017] The resulting technical effect is that, since the weld joint of the part to be welded is located in the overlapping area of ​​the notch and the relief groove, this area is prone to heat deformation. Therefore, placing the part positioning shim near this area can effectively prevent the part to be welded from heat deformation and ensure the dimensional accuracy of the part to be welded.

[0018] Preferably, a positioning shoulder is fixed on the inner mold surface of the outer mold near the bottom of the notch, and one end face of the inner mold abuts against the positioning shoulder.

[0019] The resulting technical effect is that a positioning shoulder is provided on the inner side of the outer mold for quick positioning during the assembly of the inner mold. It should be noted that this feature can help match the coaxial connection between the inner mold connecting hole and the outer mold through hole, which facilitates the connection of subsequent fasteners.

[0020] Preferably, the part to be welded is a ring-shaped structural component.

[0021] The resulting technical effect is that the part to be welded is a high-precision annular thin sheet, which is highly accurate and easily deformable. Attached Figure Description

[0022] Figure 1 This utility model relates to a structure of a detachable welding assembly tooling for high-precision, easily deformable parts. Figure 1 ;

[0023] Figure 2 This utility model relates to a structure of a detachable welding assembly tooling for high-precision, easily deformable parts. Figure 2 ;

[0024] Figure 3 This is a structural diagram of the outer mold of a high-precision, easily deformable, detachable welding assembly tooling for this utility model.

[0025] Figure 4 This is a structural diagram of the inner mold of a high-precision, easily deformable, detachable welding assembly tooling for parts according to this utility model.

[0026] Figure 5 This is a structural diagram of a part positioning pad for a high-precision, easily deformable, detachable welding assembly tooling for parts according to this utility model.

[0027] Figure 6 This is a schematic diagram of the fit between the part positioning shim and the inner mold in a high-precision, easily deformable, detachable welding assembly tooling for the present invention.

[0028] Figure 7 This is a set of drawings of the machining parts for a high-precision, easily deformable, detachable welding assembly tooling for this utility model.

[0029] 1 Inner mold, 11 Outer mold surface, 2 Recessed groove, 3 Connecting hole, 4 Outer mold, 41 Inner mold surface, 5 Notch, 6 Through hole, 7 Fastener, 8 Part positioning pad, 81 Contour groove, 82 Transition hole, 9 Part, 10 Positioning shoulder, 101 Part to be welded. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] See appendix to this utility model Figures 1 to 7 According to an embodiment of the present invention, a high-precision detachable welding assembly for easily deformable parts includes:

[0032] The inner mold 1 has an outer mold surface 11 with a relief groove 2 for the welding gun to work, and four connecting holes 3 are provided on the outer mold surface 11 and on both sides near the relief groove 2.

[0033] The outer mold 4 is located outside the inner mold 1. There is an annular gap between the inner mold surface 41 and the outer mold surface 11 of the outer mold 4 to accommodate the part 101 to be welded. The outer mold 4 is provided with a notch 5 for the welding gun head to avoid the position. The notch 5 can coincide with the position groove 2 in the circumferential direction. There are four through holes 6 on the outer mold 4 and on both sides of the notch 5, which are coaxial with the connecting hole 3. Fasteners 7 are disassembled and connected in the through holes 6 and the connecting hole 3. The fasteners can be fastening bolts, which are used with fastening nuts, or fastening screws, which are directly threaded into the corresponding threaded connecting hole.

[0034] The part positioning shim 8 is fixed between the inner mold 1 and the outer mold 4 and restricts the spacing between multiple parts. In this case example, it can simultaneously position 4 parts to be welded.

[0035] In other embodiments, both the inner mold 1 and the outer mold 4 are annular structures, the outer mold surface 11 is a cylindrical surface, the inner mold surface 41 is a hollow inner cylindrical surface, and the gap between the outer mold surface 11 and the inner mold surface 41 is larger than the radial wall thickness of the part 101 to be welded. This is to leave space for the subsequent placement of the positioning shim 8.

[0036] In some other specific embodiments, the part positioning pad 8 is an arc-shaped piece that adapts to the partial shape of the outer mold surface 11 and the inner mold surface 41. Four contouring slots 81 are provided side by side at equal intervals on the concave sidewall of the part positioning pad 8. The contouring slots adapt to the shape of the parts to be welded. The contouring slots 81 are used to position multiple parts 101 to be welded on the outer mold surface 11.

[0037] In other embodiments, the part positioning shim 8 is provided with two transition holes 82 for the fastener 7 to pass through, and the thickness of the part positioning shim 8 is the same as the gap between the outer mold surface 11 and the inner mold surface 41.

[0038] In some other embodiments, there are two part positioning pads 8 distributed on both sides of the relief groove 2, and the weld joint of the part to be welded is located in the overlapping area of ​​the notch 5 and the relief groove 2.

[0039] In some other specific embodiments, a positioning shoulder 10 is fixed on the inner mold surface 41 of the outer mold 4 near the bottom of the notch 5, and one end face of the inner mold 1 abuts against the positioning shoulder 10 for positioning.

[0040] In other embodiments, the part to be welded 101 is a ring-shaped sheet.

[0041] The notch and clearance groove are designed to prevent interference between the welding torch and the parts and tooling during brazing, and to ensure the smooth completion of the welding process.

[0042] This product's tooling is designed with clearance fits between the inner and outer molds and the contour-following positioning shims, based on the dimensional tolerances of the inner holes of high-precision, easily deformable parts. The fit tolerances ensure that the high-precision, easily deformable parts can be securely installed. This product can simultaneously accommodate four high-precision, easily deformable parts, allowing for simultaneous brazing of all four parts, significantly improving welding efficiency compared to traditional single-part brazing. Fasteners (screws and lock nuts) secure and lock the inner and outer molds and the positioning shims, preventing heat deformation during subsequent welding and ensuring weld quality. This product is easy to assemble and disassemble, effectively controls welding deformation, ensures welding precision, and significantly improves welding efficiency.

[0043] Traditional brazing methods involve clamping the parts on a fitter's workbench and manual assistance to braze high-precision, easily deformable parts. During the welding process, the dimensional tolerances of the welded parts cannot be effectively guaranteed due to the influence of clamping and welding temperature, and the parts are prone to deformation. This product's tooling is a detachable welding assembly, which solves the problem of easy deformation during welding, ensures the dimensional accuracy of the brazed joints, and improves welding efficiency. By researching and designing a detachable welding assembly, it ensures precise welding of parts, prevents deformation, guarantees dimensional accuracy requirements, and enables the quick and efficient welding of four parts at once, significantly improving welding efficiency compared to traditional methods.

[0044] The apparatus and methods disclosed in the embodiments are described simply because they correspond to the methods disclosed in the embodiments. For relevant details, please refer to the method section.

[0045] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A high-precision, easily deformable, detachable welding assembly tooling, characterized in that, include: The inner mold (1) has an outer mold surface (11) with a relief groove (2) for avoiding the operation of the welding gun. Multiple connecting holes (3) are provided on the outer mold surface (11) and on both sides near the relief groove (2). The outer mold (4) is located outside the inner mold (1). The inner mold surface (41) and the outer mold surface (11) of the outer mold (4) have an annular gap to accommodate the part to be welded (101). The outer mold (4) is provided with a notch (5) for avoiding the welding gun head. The notch (5) can coincide with the avoidance groove (2). The outer mold (4) is provided with multiple through holes (6) on both sides corresponding to the notch (5) and coaxial with the connecting hole (3). Fasteners (7) are disassembled and connected in the through holes (6) and the connecting hole (3). Part positioning shims (8) are fixed between the inner mold (1) and the outer mold (4) and limit the spacing between multiple parts.

2. The high-precision, easily deformable, detachable welding assembly tooling for parts according to claim 1, characterized in that, The inner mold (1) and the outer mold (4) are both annular structures. The outer mold surface (11) and the inner mold surface (41) are both cylindrical surfaces. The gap between the outer mold surface (11) and the inner mold surface (41) is greater than the radial wall thickness of the part to be welded (101).

3. The high-precision, easily deformable, detachable welding assembly tooling for parts according to claim 1, characterized in that, The part positioning pad (8) is an arc-shaped piece that adapts to the partial shape of the outer mold surface (11) and the inner mold surface (41). Multiple contouring slots (81) are arranged side by side on the concave sidewall of the part positioning pad (8). The contouring slots (81) are used to position the part to be welded (101) on the outer mold surface (11).

4. The high-precision, easily deformable, detachable welding assembly tooling for parts according to claim 3, characterized in that, The part positioning shim (8) is provided with a plurality of transition holes (82) for fasteners (7) to pass through, and the thickness of the part positioning shim (8) is the same as the gap between the outer mold surface (11) and the inner mold surface (41).

5. A high-precision, easily deformable, detachable welding assembly tooling for parts according to claim 4, characterized in that, There are two positioning pads (8) for the parts and they are distributed on both sides of the relief groove (2). The weld joint of the part to be welded is located in the overlapping area of ​​the notch (5) and the relief groove (2).

6. A high-precision, detachable welding assembly tooling for easily deformable parts according to any one of claims 1-5, characterized in that, A positioning shoulder (10) is fixed on the inner mold surface (41) of the outer mold (4) and near the bottom of the notch (5), and one end face of the inner mold (1) abuts against the positioning shoulder (10).

7. A high-precision, easily deformable, detachable welding assembly tooling for parts according to claim 6, characterized in that, The part to be welded (101) is a ring-shaped structure.

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