Civil aircraft generator rotating rectifier welding tool

Abstract

The utility model provides a civil aircraft generator rotating rectifier welding tool, and belongs to the technical field of welding tools. Comprising a first welding tool, the first welding tool comprises a first heating plate and a first positioning plate coaxially arranged on the first heating plate in a sliding mode, and a first gap used for containing an upper-layer polar plate and a diode is reserved between the first heating plate and the first positioning plate; the first positioning plate is provided with a plurality of first positioning grooves used for being in one-to-one plugging cooperation with diodes. The device further comprises a second welding tool, the second welding tool comprises a second heating plate and a second positioning plate coaxially arranged on the second heating plate in a sliding mode, and a second gap used for containing the upper-layer polar plate, the diode and the leading-out piece is reserved between the second heating plate and the second positioning plate. The second positioning plate is provided with a plurality of second positioning grooves used for being matched with the leading-out sheets in an inserted mode. The effect of improving the welding convenience of the rotary rectifier is achieved.

Description

Technical Field

[0001] This utility model relates to the field of welding tooling technology, and in particular to a welding tooling for a rotating rectifier of a civil aircraft generator. Background Technology

[0002] Modern civilian power systems mainly consist of generators, APU generators (also known as auxiliary generators), batteries, and emergency generators. APU generators are typically three-stage electrically excited synchronous generators. The rotating rectifier's function is to rectify the alternating current generated by the excitation rotor into direct current, which is then input into the main rotor field.

[0003] like Figure 1 As shown, a rotating rectifier typically includes a rectifier body and lead-out tabs. The rectifier body includes an upper electrode plate and multiple sets of diodes welded and fixed to the upper electrode plate. The number of lead-out tabs corresponds one-to-one with the number of diode sets and is welded together. Because diodes are very small and numerous, a welding fixture for a civil aircraft generator rotating rectifier is needed to facilitate the welding of the diodes, upper electrode plate, and lead-out tabs. Utility Model Content

[0004] In view of the above problems, this utility model provides a welding fixture for a rotating rectifier of a civil aircraft generator.

[0005] To achieve the above-mentioned objectives, the technical solution adopted by this utility model is as follows:

[0006] A welding fixture for a rotating rectifier of a civil aircraft generator is provided. The fixture includes a first welding fixture for welding and fixing an upper electrode plate and multiple diodes to form the rectifier body. The first welding fixture includes a first heating plate and a first positioning plate coaxially slidably disposed on the first heating plate. A first gap is left between the first heating plate and the first positioning plate to accommodate the upper electrode plate and the diodes. The first positioning plate has multiple first positioning grooves for inserting and engaging with the diodes. The fixture also includes a second welding fixture for welding and fixing the rectifier body and multiple lead-out pieces. The second welding fixture includes a second heating plate and a second positioning plate coaxially slidably disposed on the second heating plate. A second gap is left between the second heating plate and the second positioning plate to accommodate the upper electrode plate, diodes, and lead-out pieces. The second positioning plate has multiple second positioning grooves for inserting and engaging with the lead-out pieces.

[0007] Furthermore, both the first heating plate and the second heating plate are provided with elastic extrusion components for driving the corresponding first positioning plate / second positioning plate to move and approach themselves. The elastic extrusion component includes a spring, a screw and a nut. One end of the screw is vertically fixed to the first heating plate / second heating plate, and the other end of the screw passes through the first positioning plate / second positioning plate and is threadedly connected to the nut. The spring is sleeved on the screw, with one end of the spring abutting against the first positioning plate / second positioning plate and the other end of the spring abutting against the nut.

[0008] Furthermore, both the first heating plate and the second heating plate are provided with multiple positioning posts parallel to the screw, and the first positioning plate, the second positioning plate and the upper electrode plate are provided with multiple positioning holes of the same size as the positioning posts.

[0009] Furthermore, the end of the positioning post away from the first heating plate / second heating plate has a chamfer.

[0010] Furthermore, the first positioning plate is made of heat insulation board, which is a glass fiber laminate; the second positioning plate is made of heat dissipation board, which is made of No. 45 steel, and the side of the second positioning plate away from the second heating plate has an annular heat dissipation groove.

[0011] The beneficial effects of this utility model are as follows: Multiple sets of diodes are inserted one by one into the first positioning groove on the first positioning plate. Then, the upper electrode plate is placed between the first positioning plate and the first heating plate. Next, the first positioning plate is moved so that one end of the diode can be pressed down on the upper electrode plate. The solder between the diode and the upper electrode plate is gold solder. By heating with the first heating plate, the gold solder can be melted, so that the diode is welded to the upper electrode plate and forms the rectifier body. In the next step, the rectifier body and multiple lead-out pieces are placed between the second heating plate and the second positioning plate, and the multiple lead-out pieces are inserted one by one into the second positioning groove. The solder between the lead-out pieces and the diode is gold solder paste. By heating with the second heating plate, the gold solder paste can be melted, so that the multiple lead-out pieces can be welded to each set of diodes respectively. This has the effect of improving the welding convenience of the rotary rectifier. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the rotating rectifier structure of a welding fixture for a civil aircraft generator rotating rectifier according to an embodiment of this application.

[0013] Figure 2 This is a schematic diagram of the first welding fixture structure of a welding fixture for a rotating rectifier of a civil aircraft generator according to an embodiment of this application.

[0014] Figure 3 This is a schematic diagram of the second welding fixture structure of a welding fixture for a rotating rectifier of a civil aircraft generator according to an embodiment of this application.

[0015] Figure 4 This is an exploded view of the first welding fixture of a welding fixture for a rotating rectifier of a civil aircraft generator according to an embodiment of this application.

[0016] Figure 5 This is an exploded view of the second welding fixture of a welding fixture for a rotating rectifier of a civil aircraft generator according to an embodiment of this application.

[0017] Among them, 1. First welding fixture; 11. First heating plate; 12. First positioning plate; 121. First positioning groove; 13. First gap; 2. Second welding fixture; 21. Second heating plate; 211. Second positioning groove; 22. Second positioning plate; 221. Heat dissipation groove; 23. Second gap; 3. Elastic extrusion assembly; 31. Spring; 32. Screw; 33. Nut; 4. Washer; 5. Positioning post; 51. Chamfer; 6. Positioning hole; 7. Rectifier body; 71. Upper electrode plate; 72. Diode; 8. Lead-out piece. Detailed Implementation

[0018] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0019] This application discloses a welding fixture for a rotating rectifier of a civil aircraft generator, referring to... Figure 2 and Figure 3 The rectifier body 7 is formed by welding and fixing an upper electrode plate 71 and multiple diodes 72 to form the rectifier body 7. The first welding fixture 1 includes a first heating plate 11 and a first positioning plate 12 coaxially slidably disposed on the first heating plate 11. A first gap 13 is left between the first heating plate 11 and the first positioning plate 12 to accommodate the upper electrode plate 71 and the diodes 72. The first positioning plate 12 has multiple first positioning grooves 121 for inserting and engaging with the diodes 72 one by one. The rectifier body 7 is also formed by welding and fixing a second welding fixture 2 to weld and fix multiple lead-out pieces 8. The second welding fixture 2 includes a second heating plate 21 and a second positioning plate 22 coaxially slidably disposed on the second heating plate 21. A second gap 23 is left between the second heating plate 21 and the second positioning plate 22 to accommodate the upper electrode plate 71, the diodes 72 and the lead-out pieces 8. The second positioning plate 22 has multiple second positioning grooves 211 for inserting and engaging with the lead-out pieces 8.

[0020] In this embodiment, the upper electrode plate 71 is made of electrical pure copper, and the lead sheet 8 is made of beryllium copper. The operator can first insert multiple sets of diodes 72 one by one into the first positioning slot 121 on the first positioning plate 12, then place the upper electrode plate 71 between the first positioning plate 12 and the first heating plate 11. Next, the first positioning plate 12 is moved so that one end of the diode 72 can be pressed down onto the upper electrode plate 71. The solder between the diode 72 and the upper electrode plate 71 is gold solder. Heating with the first heating plate 11 melts the gold solder, allowing the diode 72 to be soldered onto the upper electrode plate 71 and forming the rectifier body 7. Next, the rectifier body 7 and multiple lead-out pieces 8 are placed between the second heating plate 21 and the second positioning plate 22, and the multiple lead-out pieces 8 are inserted one by one into the second positioning groove 211. The solder between the lead-out pieces 8 and the diodes 72 is gold solder paste. Heating with the second heating plate 21 melts the gold solder paste, allowing the multiple lead-out pieces 8 to be soldered onto each group of diodes 72. This improves the ease of soldering the rotating rectifier.

[0021] Reference Figure 4 and Figure 5 Each of the first heating plate 11 and the second heating plate 21 is provided with an elastic compression assembly 3 for driving the corresponding first positioning plate 12 / second positioning plate 22 to move and approach itself. The elastic compression assembly 3 includes a spring 31, a screw 32, and a nut 33. One end of the screw 32 is vertically welded and fixed to the first heating plate 11 / second heating plate 21, and the other end of the screw 32 passes through the first positioning plate 12 / second positioning plate 22 and is threadedly connected to the nut 33. The spring 31 is sleeved on the screw 32, with one end of the spring 31 abutting against the first positioning plate 12 / second positioning plate 22 and the other end of the spring 31 abutting against the nut 33.

[0022] During the welding process, the first heating plate 11 and the second heating plate 21 are heated to a higher temperature, and both the gold solder sheet and the gold solder paste will melt. The air on the welding surface can be discharged by the spring 31 pressing against the first positioning plate 12 / second positioning plate 22 to avoid the occurrence of poor welding.

[0023] In other embodiments of this application, since the outer diameter of some springs 31 is relatively large, a washer 4 can be installed between the nut 33 and the spring 31, and the outer diameter of the washer 4 is ensured to be larger than the outer diameter of the spring 31.

[0024] Furthermore, multiple positioning posts 5 parallel to the screw 32 are welded onto the first heating plate 11 and the second heating plate 21, and multiple positioning holes 6 with sizes adapted to the positioning posts 5 are opened on the first positioning plate 12, the second positioning plate 22 and the upper electrode plate 71.

[0025] By connecting the positioning pin 5 with the positioning hole 6, the installation stability of the upper electrode plate 71, diode 72 and lead plate 8 during the welding process can be further improved.

[0026] To facilitate the positioning post 5 passing through the positioning hole 6, a chamfer 51 is provided at the end of the positioning post 5 away from the first heating plate 11 / second heating plate 21.

[0027] Furthermore, the first positioning plate 12 is a heat insulation plate, which is a glass fiber laminate; the second positioning plate 22 is a heat dissipation plate, which is made of No. 45 steel, and an annular heat dissipation groove 221 is provided on the side of the second positioning plate 22 away from the second heating plate 21.

[0028] During the heating process of the first heating plate 11 and the second heating plate 21, the positioning post 5 and the screw 32 transfer heat. During the welding of the diode 72 to the upper electrode plate 71, the first positioning plate 12, made of fiberglass laminate, is not only heat-resistant but also a non-metallic material with poor thermal conductivity, preventing the diode 72 from overheating and being damaged. During the welding of the diode 72 to the lead plate 8, the second positioning plate 22, made of 45# steel, is a metallic material. This allows for more uniform pressure between the diode 72 and the lead plate 8 under the elastic force of the spring 31 when the solder paste melts, resulting in a more uniform distribution of the melted solder paste. Simultaneously, the second positioning plate 22, through the heat dissipation grooves 221, increases its own heat dissipation, further preventing the diode 72 from overheating and being damaged.

[0029] The implementation principle of a welding fixture for a rotating rectifier of a civil aircraft generator according to an embodiment of this application is as follows: Multiple sets of diodes 72 are inserted one by one into the first positioning groove 121 on the first positioning plate 12. Then, the upper electrode plate 71 is placed between the first positioning plate 12 and the first heating plate 11. Next, the first positioning plate 12 is moved so that one end of the diode 72 can be pressed down onto the upper electrode plate 71. The solder between the diode 72 and the upper electrode plate 71 is gold solder. Heating with the first heating plate 11 melts the gold solder, allowing the diode 72 to be welded onto the upper electrode plate 71 and forming the rectifier body 7. Next, the rectifier body 7 and multiple lead-out pieces 8 are placed between the second heating plate 21 and the second positioning plate 22, and the multiple lead-out pieces 8 are inserted one by one into the second positioning groove 211. The solder between the lead-out pieces 8 and the diodes 72 is gold solder paste. Heating with the second heating plate 21 melts the gold solder paste, allowing the multiple lead-out pieces 8 to be welded onto each set of diodes 72 respectively. It improves the ease of welding rotary rectifiers.

[0030] Those skilled in the art will understand that although preferred embodiments of the present invention have been described, those skilled in the art, once they understand the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention. Clearly, those skilled in the art can make various alterations and modifications to the present invention without departing from its spirit and scope. Thus, if these modifications and modifications of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention also intends to include these modifications and modifications.

Claims

1. A civil aircraft generator rotary rectifier welding fixture characterized by: The application relates to a welding tool (1) for welding and fixing an upper layer of plates (71) and a plurality of diodes (72) to form a rectifier main body (7), wherein the welding tool (1) comprises a first heating plate (11) and a first positioning plate (12) coaxially and slidingly arranged on the first heating plate (11), a first gap (13) is left between the first heating plate (11) and the first positioning plate (12) for accommodating the upper layer of plates (71) and the diodes (72), and a plurality of first positioning grooves (121) are formed in the first positioning plate (12) for one-to-one plug-in cooperation with the diodes (72). The application also relates to a second welding tool (2) for welding and fixing the rectifier main body (7) and a plurality of lead-out sheets (8), wherein the second welding tool (2) comprises a second heating plate (21) and a second positioning plate (22) coaxially and slidingly arranged on the second heating plate (21), a second gap (23) is left between the second heating plate (21) and the second positioning plate (22) for accommodating the upper layer of plates (71), the diodes (72) and the lead-out sheets (8), and a plurality of second positioning grooves (211) are formed in the second positioning plate (22) for plug-in cooperation with the lead-out sheets (8).

2. A civilian aircraft generator rotary rectifier welding fixture as defined in claim 1, wherein: The first heating plate (11) and the second heating plate (21) are respectively provided with elastic extrusion assemblies (3) for driving the corresponding first positioning plate (12) / second positioning plate (22) to move and approach the first heating plate (11) / second heating plate (21), the elastic extrusion assembly (3) comprises a spring (31), a screw rod (32) and a nut (33), one end of the screw rod (32) is fixedly connected to the first heating plate (11) / second heating plate (21) in a perpendicular mode, the other end of the screw rod (32) penetrates through the first positioning plate (12) / second positioning plate (22) and is threadedly connected to the nut (33), the spring (31) is sleeved on the screw rod (32), one end of the spring (31) abuts against the first positioning plate (12) / second positioning plate (22), and the other end of the spring (31) abuts against the nut (33).

3. A civilian aircraft generator rotary rectifier welding fixture as defined in claim 2 wherein: The first heating plate (11) and the second heating plate (21) are respectively provided with a plurality of positioning columns (5) parallel to the screw rod (32), the first positioning plate (12), the second positioning plate (22) and the upper layer of plates (71) are respectively provided with a plurality of positioning holes (6) with sizes matched with the positioning columns (5).

4. A civilian aircraft generator rotary rectifier welding fixture as defined in claim 3 wherein: The positioning column (5) is provided with a chamfer (51) at an end far away from the first heating plate (11) / second heating plate (21).

5. A civilian aircraft generator rotary rectifier welding fixture as defined in claim 1 wherein: The first positioning plate (12) is a heat insulation plate, and the heat insulation plate is a glass fiber laminated plate; the second positioning plate (22) is a heat dissipation plate, the heat dissipation plate is made of 45# steel, and a ring-shaped heat dissipation groove (221) is formed in a side of the second positioning plate (22) far away from the second heating plate (21).

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