A design method of a positioning special fixture based on a vane assembly energy storage spot welding

Abstract

The application provides a design method of a special fixture for positioning energy storage spot welding based on a guide vane assembly, comprising the following steps: determining an energy storage spot welding process route, first spot welding a baffle plate 1 and a baffle plate 2, then spot welding a honeycomb, and then spot welding and combining with a main part. Determining a part positioning reference, and selecting an outer circle of the part as a positioning reference surface. Selecting a spot pole base material, and selecting brass or red copper as the spot pole base material. Designing a detachable spot pole base, preferentially assembling the baffle plate 1 and the baffle plate 2 during spot welding, forming a baffle plate assembly, and increasing the welding points and the welding strength to form a honeycomb assembly. The application has the following advantages: the part size precision is ensured, the stability and the inclusiveness are considered at the same time, and the spot welding efficiency is improved. The fitting degree between the honeycomb and the baffle plate is improved through the adaptive curvature, the stress strength of the part during the energy storage spot welding is increased, the combination between the parts is strengthened, the deformation of the baffle plate and the honeycomb is reduced, and the vacuum brazing quality of the part is improved.

Description

Technical Field

[0001] This invention relates to the field of pre-welding assembly and positioning of vacuum brazing components for aero-engines, and particularly to a design method for a special fixture for energy storage spot welding positioning of guide vane components. Background Technology

[0002] As aero engines are continuously upgraded, the structure of components also changes accordingly. The low-guide vane assembly of this aircraft model adopts a new configuration, resulting in difficulties in machining, welding, and a low first-pass yield. New process and tooling solutions are needed for this new configuration. Summary of the Invention

[0003] The purpose of this invention is to improve the efficiency and brazing quality of pre-vacuum brazing positioning spot welding of parts in conjunction with a new process scheme. Specifically, it provides a design method for a special fixture for energy storage spot welding positioning of guide vane assemblies.

[0004] This invention provides a design method for a special fixture for energy storage spot welding positioning of guide vane assemblies, comprising:

[0005] I. Determine the spot welding process route for energy storage. First, spot weld partition 1 and partition 2, then spot weld the honeycomb 3, and finally spot weld it to the main body component 4. See attached document. Figure 2

[0006] II. Determining the positioning datum of the part

[0007] With attachment Figure 1 Taking the part shown in the figure as an example, the outer circle of the part is selected as the positioning reference surface.

[0008] III. Selection of Point Pole Seat Material

[0009] The material for the point electrode holder is brass or copper, with copper being preferred.

[0010] IV. Design of detachable pole mount (see appendix) Figure 3

[0011] The radial positioning dimension of the point pole seat positioning surface should be consistent with the attached... Figure 2 The outer diameter of the middle partition 1 is the same. During the spot welding process, partition 1 and partition 2 are assembled first to form a partition assembly, and the number of welding points is increased to increase the welding strength.

[0012] After the partition assembly is spot-welded, the honeycomb 3 is placed on the spot-welded partition and spot-welded a second time to attach the honeycomb 3 to the partition assembly, forming the honeycomb assembly. Then, the honeycomb assembly is spot-welded to the main body part 4 on the energy storage spot welding fixture, completing the spot welding process.

[0013] Compared with the prior art, the advantages of this invention are:

[0014] The design method of the special fixture for energy storage spot welding of guide vane assemblies described in this invention ensures the dimensional accuracy of parts while taking into account stability and containment. This allows a single fixture to complete the energy storage spot welding of guide vane assemblies, reducing worker workload and improving spot welding efficiency. By adapting the curvature, the fit between the honeycomb and the partition is improved, increasing the stress strength of the parts during energy storage spot welding, strengthening the bonding force between parts, reducing deformation of the partition and honeycomb, and improving the vacuum brazing quality of the parts. Attached Figure Description

[0015] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments:

[0016] Figure 1 Schematic diagram of energy storage spot welding fixture;

[0017] Figure 2 For the new configuration diagram;

[0018] Figure 3 This is a diagram of a detachable pole mount. Detailed Implementation

[0019] The present invention will be further explained below with reference to specific implementation schemes, but it is not limited to the present invention. The structures, proportions, sizes, etc. shown in the accompanying drawings are only used to complement the content disclosed in the specification, so as to enable those skilled in the art to understand and read, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effect and purpose that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0020] This invention provides a design method for a special fixture for energy storage spot welding positioning of guide vane assemblies, comprising:

[0021] I. Determine the spot welding process route for energy storage. First, spot weld partition 1 and partition 2, then spot weld the honeycomb 3, and finally spot weld it to the main body component 4. See attached document. Figure 2

[0022] II. Determining the positioning datum of the part

[0023] With attachment Figure 1 Taking the part shown in the figure as an example, the outer circle of the part is selected as the positioning reference surface.

[0024] III. Selection of Point Pole Seat Material

[0025] The material for the point electrode holder is brass or copper, with copper being preferred.

[0026] IV. Design of detachable pole mount (see appendix) Figure 3

[0027] The radial positioning dimension of the point pole seat positioning surface should be consistent with the attached... Figure 2 The outer diameter of the middle partition 1 is the same. During the spot welding process, partition 1 and partition 2 are assembled first to form a partition assembly, and the number of welding points is increased to increase the welding strength.

[0028] After the partition assembly is spot-welded, the honeycomb 3 is placed on the spot-welded partition and spot-welded a second time to attach the honeycomb 3 to the partition assembly, forming the honeycomb assembly. Then, the honeycomb assembly is spot-welded to the main body part 4 on the energy storage spot welding fixture, completing the spot welding process.

[0029] Matters not covered in this invention are common knowledge.

[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method of spot welding based on a guide vane assembly energy storage point welding positioning special fixture, characterized in that: The welding method based on the positioning special fixture of the energy storage spot welding of the guide vane assembly comprises the following steps: I. Determine the energy storage spot welding process route, first spot weld the partition plate one (1) and the partition plate two (2), then spot weld the honeycomb (3), and then spot weld and combine with the main part (4); II. Determine the part positioning reference, select the outer circle of the part as the positioning reference surface; III. Select the electrode holder material, the electrode holder material is selected from brass or red copper; IV. Design a detachable electrode holder, the radial positioning size of the electrode holder positioning surface is the same as the outer diameter of the partition plate one (1), in the spot welding process, the partition plate one (1) and the partition plate two (2) are preferentially assembled to form a partition plate assembly, and the welding points are increased to increase the welding strength; after the spot welding of the partition plate assembly is completed, the honeycomb (3) is placed on the spot-welded partition plate, and secondary spot welding is performed, the honeycomb (3) is spot welded to the partition plate assembly to form a honeycomb assembly; then the assembly is completed on the energy storage spot welding fixture, the honeycomb assembly is spot welded to the main part (4), and the spot welding process is completed.

2. The method of claim 1, wherein the method is characterized by: The electrode holder material is selected from red copper.

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