Welding device and welding method for thin-wall guider

Abstract

The invention discloses a welding device and method for a thin-wall guider, and belongs to the technical field of aero-engine part machining. The welding device comprises a base, and a supporting plate is fixedly arranged at the top end, extending out of the base, of a rotating shaft; the sliding supporting assembly is slidably arranged on the base in the radial direction of the base and abuts against the rotary disc. The sliding supporting assembly is used for abutting against the welding faces of the first to-be-welded part and the second to-be-welded part after the first to-be-welded part and the second to-be-welded part are sequentially installed on the base. The rotating shaft is used for pushing the sliding supporting assembly to slide inwards in the radial direction of the base through the rotating disc, and then the sliding supporting assembly is separated from the first to-be-welded part and the second to-be-welded part. The welding faces of the first to-be-welded part and the second to-be-welded part of the thin-wall guider are synchronously supported through the sliding supporting assembly, the size stability and consistency of the flow channel face of the thin-wall guider after welding are ensured, meanwhile, the rotary disc can conveniently drive the sliding supporting assembly to slide to be separated from the welded part, and the part can be conveniently taken out.

Description

Technical Field

[0001] This application relates to the technical field of aero-engine part processing, and in particular, to a welding device for a thin-walled guide vane. In addition, this application also relates to a welding method using the above-mentioned welding device for the thin-walled guide vane. Background Art

[0002] The information provided in this section is for the purpose of generally presenting the background of this application. To the extent described in this section, the work of the currently named inventors and aspects that may not constitute prior art descriptions at the time of filing are neither expressly nor impliedly considered prior art to this application.

[0003] In the field of aero-engine component processing, an integral guide vane cast by the investment casting method is usually split into multiple unit bodies at the wax pattern stage. After these unit bodies are pressed out by a single mold, they are welded together again. When the flow path surface has a long and narrow structure, the flow path needs to be split into two parts: a blade area and a non-blade area (i.e., a single ring).

[0004] Traditionally, the first method is flat split (please refer to the attached Figure 2 and 3 ). This method has low requirements for the wall thickness of the part, but during the wax pattern assembly, it is impossible to accurately position the part axially and radially. Controlled only by the operator's naked eye, during welding, problems such as misalignment, unevenness, and inclination are likely to occur, resulting in poor consistency and ultimately the final dimensions exceeding the tolerance range. In this case, the welding efficiency is very low, and it is difficult to remedy the problems when they are discovered later.

[0005] The second method is stepped split (please refer to the attached Figure 4 ). This method can use the steps to position it axially and radially, but this method is only applicable to parts with a split part thickness a greater than 4 mm. After the thin-walled part is split into steps, it is easy to have a situation where the steps are not filled during the wax pattern stage, resulting in the steps being ineffective; especially for a guide vane with a structure that is small at both ends and large in the middle (the diameter Φb at the middle split is greater than the diameters Φa and Φc of the installation edges at both ends), using a flat split, without using a fixture, will result in inaccurate positioning. If a fixture is used to position the thin wall at the split, it is difficult to remove the wax pattern after welding; and since the wall thickness at the connection welding part of this guide vane is only 1.3 mm, the stepped split cannot be used either.

[0006] In summary, due to various factors, there is an urgent need to develop a special alignment welding device to solve the problems of unevenness and deformation caused by inaccurate positioning during the welding of the wax pattern of the flow path surface of the thin-walled guide vane, and at the same time ensure that the wax pattern can be normally removed after welding.

[0007] It should be noted that the information disclosed in the above background art section is only used to enhance the understanding of the background of the present application. Therefore, it may include information that does not constitute the prior art known to those of ordinary skill in the art. Summary of the Invention

[0008] In view of at least one of the above technical problems, the present application provides a welding device and a welding method for a thin-walled guide. The sliding support assembly can synchronously support the welding surfaces of the first and second parts to be welded of the thin-walled guide, ensuring the dimensional stability and consistency of the flow channel surface of the thin-walled guide after welding. At the same time, it is also convenient for the turntable to drive the sliding support assembly to slide away from the welded part, facilitating the removal of the part.

[0009] According to one aspect of the present application, there is provided a welding device for a thin-walled guide, which is used to support and clamp the first and second parts to be welded of the thin-walled guide and align their welding surfaces. The welding device for the thin-walled guide includes a base, a sliding support assembly, a turntable, a support plate and a rotating shaft:

[0010] The base is used to support the first part to be welded. The rotating shaft is rotatably arranged in a preset shaft hole on the base. The support plate is fixedly arranged at the top of the rotating shaft extending out of the shaft hole of the base. The support plate is used to support the second part to be welded and limit its axial and radial directions.

[0011] The turntable is fixedly arranged on the rotating shaft, and the turntable is located between the support plate and the base. The support structure of the sliding support assembly is slidably arranged on the base along the radial direction of the base. The support structure of the sliding support assembly is used to press against the welding surfaces of the first and second parts to be welded after the first and second parts to be welded are successively arranged on the base, so as to align the welding surfaces of the first and second parts to be welded. The rotating shaft is used to drive the turntable to rotate and push the support structure of the sliding support assembly to slide inwards along the radial direction of the base, thereby separating the support structure of the sliding support assembly from the first and second parts to be welded.

[0012] In some embodiments of the present application, the support structure of the sliding support assembly includes a sliding member. The sliding support assembly further includes a pushing member and a clamping member. A plurality of first limiting grooves are annularly arranged on the base, and a third limiting groove communicating with the first limiting groove is arranged beside each first limiting groove. The sliding member is slidably arranged in the first limiting groove along the radial direction of the base. A second compression spring is arranged between the sliding member and the side wall of the first limiting groove. The second compression spring is used to apply an elastic force to the sliding member along the radial direction of the base inward. The clamping member is slidably arranged in the third limiting groove. A first compression spring is arranged between the clamping member and the inner wall of the third limiting groove. The first compression spring is used to apply an elastic force to the clamping member to slide from the third limiting groove into the first limiting groove, so as to make the clamping member clamp the sliding member to make the sliding member press against the welding surfaces of the first workpiece to be welded and the second workpiece to be welded. The pushing member is arranged on the clamping member. The pushing member is used to abut against the turntable. The turntable is used to push the pushing member during the rotation along with the rotating shaft, so as to drive the clamping member to disengage from the sliding member through the pushing member, and further make the sliding member release the limitation on the first workpiece to be welded and the second workpiece to be welded.

[0013] In some embodiments of the present application, the support structure of the sliding support assembly further includes a support block. The first end of the support block is hinged to the sliding member. The sliding member is also used to press against the welding surfaces of the first workpiece to be welded and the second workpiece to be welded through the second end of the support block when sliding outward along the radial direction of the base.

[0014] In some embodiments of the present application, the second end of the support block is an arc surface structure.

[0015] In some embodiments of the present application, the sliding member includes a support portion and a sliding portion. The support portion is arranged on the sliding portion. The sliding portion is slidably arranged in the first limiting groove along the radial direction of the base. A limiting hole is arranged at the top of the support portion. The first end of the support block is connected to the limiting hole through a pin shaft. A support platform is arranged below the limiting hole of the support portion. The support platform is used to support the bottom of the support block.

[0016] In some embodiments of the present application, an installation groove is arranged on the side wall of the sliding portion of the sliding member facing the outer circumference of the base. One end of the second compression spring is inserted into the installation groove. The installation groove is used to limit and guide the second compression spring.

[0017] In some embodiments of the present application, the sliding support assembly further includes a keyway plate. A second limiting groove is arranged beside the first limiting groove on the base. The keyway plate is fixedly arranged in the second limiting groove. A keyway is arranged on the keyway plate. The length direction of the keyway is parallel to the length direction of the third limiting groove. The pushing member passes through the keyway. The keyway is used to guide the pushing member.

[0018] In some embodiments of the present application, a clamping groove is formed on the turntable. An extension portion is provided on one side of the clamping groove. The top end of the pushing member is located in the clamping groove and abuts against the extension portion. During the rotation of the turntable with the rotating shaft, the pushing member is pushed by the extension portion, and the clamping groove is used to limit the pushing member.

[0019] According to another aspect of the present application, a welding method for a thin-wall guide is further provided. Using the above-mentioned welding device for the thin-wall guide, the welding method for the thin-wall guide includes the following steps:

[0020] S100. Manually turn the turntable to rotate with the rotating shaft, and push the supporting structure of the sliding support assembly to slide radially inward along the base through the turntable;

[0021] S200. Place the first workpiece to be welded on the base, place the second workpiece to be welded on the support plate, and align the welding surface of the second workpiece with the welding surface of the first welding surface;

[0022] S300. Release the turntable, manually push the supporting structure of the sliding support assembly to slide radially outward along the base, and press the welding surfaces of the first workpiece to be welded and the second workpiece to be welded through the supporting structure of the sliding support assembly;

[0023] S400. Weld the welding surfaces of the first workpiece to be welded and the second workpiece to be welded using a soldering iron.

[0024] In some embodiments of the present application, in step S300, manually push the sliding member to drive the support block to press the welding surfaces of the first workpiece to be welded and the second workpiece to be welded. When the sliding member slides radially outward along the base, the clamping member is pushed into the first limiting groove by the first compression spring to clamp the sliding member; after step S400, lift the welded part upward, and the support block flips upward under the action of the thrust of the part to facilitate the removal of the part.

[0025] The present application has the following beneficial effects:

[0026] The welding device for a thin-walled guide in this application is provided with a rotatable rotating shaft on the base, and a support plate is arranged on the top of the rotating shaft. The base can support the bottom of the first workpiece to be welded, and at the same time, the support plate can support and position the second workpiece to be welded, enabling the second workpiece to be welded to be preliminarily aligned with the welding surface of the first workpiece to be welded. Furthermore, by using the sliding support assembly to tightly press the welding surface of the second workpiece to be welded against that of the first workpiece, problems such as uneven welding, deformation, and low efficiency caused by repeated processing on the welding surface can be reduced, ensuring the dimensional stability and consistency after welding. In addition, it is convenient to drive the sliding support assembly to slide radially inward along the base through the turntable in the middle of the rotating shaft to release the pressing effect on the part. For parts with small ends and a large welding part in the middle, it can be more conveniently and smoothly directly lifted out, effectively improving the processing efficiency, reducing the bump damage to the parts to be processed, and ensuring the processing quality.

[0027] The welding method for the thin-walled guide in this application also has the above beneficial effects. It also includes the ability to conveniently and quickly clamp the first workpiece to be welded and the second workpiece to be welded. By using the sliding support assembly, it effectively solves the problem that when the two parts of the wax mold of the flow channel surface of the guide with a thin-walled flow channel surface are assembled after disassembly, they can still be accurately aligned and firmly welded, ensuring that the welding process does not deform, thereby improving the welding accuracy and quality. At the same time, for parts with small ends (the upper and lower installation edges of the inner ring of the guide) and a large middle part (the welding part), after being welded on this device, it is also convenient to quickly take them out by directly lifting them up.

[0028] Of course, it is not necessary for any product implementing this application to achieve all the above-mentioned advantages simultaneously. In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. The following will refer to the drawings for a further detailed description of this application. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings forming a part of this application are used to provide a further understanding of this application. The schematic embodiments and descriptions of this application are used to explain this application and do not constitute an improper limitation of this application. In the drawings:

[0030] Figure 1 is the overall structural schematic diagram of the preferred embodiment of this application;

[0031] Figure 2 is the schematic diagram of the flat-mouth type split guide of the prior art;

[0032] Figure 3 is the partial enlarged schematic diagram at A;

[0033] Figure 4 is the schematic diagram of the stepped split guide of the prior art;

[0034] Figure 5It is a schematic diagram of the preferred embodiment of the present application without the parts to be processed placed thereon;

[0035] Figure 6 It is a schematic structural diagram of the sliding member of the preferred embodiment of the present application;

[0036] Figure 7 It is a schematic structural diagram of the turntable of the preferred embodiment of the present application;

[0037] Figure 8 It is a schematic installation diagram of the clamping member of the preferred embodiment of the present application;

[0038] Figure 9 It is a schematic installation diagram of the sliding member of the preferred embodiment of the present application;

[0039] Figure 10 It is a schematic installation diagram of the support block of the preferred embodiment of the present application;

[0040] Figure 11 It is a schematic installation diagram of the first welding member to be welded of the preferred embodiment of the present application;

[0041] Figure 12 It is a schematic overall top view after the first welding member to be welded is placed well in the preferred embodiment of the present application;

[0042] Figure 13 It is a schematic structural diagram of the support plate of the preferred embodiment of the present application;

[0043] Figure 14 It is a schematic installation diagram of the second welding member to be welded of the preferred embodiment of the present application;

[0044] Figure 15 It is a schematic structural diagram of the support block of the preferred embodiment of the present application;

[0045] Figure 16 It is a schematic diagram of the first welding member to be welded and the second welding member to be welded being lifted after welding is completed in the preferred embodiment of the present application;

[0046] Figure 17 It is a schematic diagram of the support block being turned upwards in the preferred embodiment of the present application.

[0047] Legend Explanation: 100, the first welding member to be welded; 200, the second welding member to be welded; 1, the base; 11, the first limiting groove; 12, the second limiting groove; 13, the third limiting groove; 14, the limiting boss; 2, the pushing member; 3, the turntable; 31, the clamping groove; 32, the extending portion; 4, the support plate; 5, the support block; 6, the clamping member; 61, the first compression spring; 7, the sliding member; 71, the installation groove; 72, the second compression spring; 73, the supporting portion; 74, the sliding portion; 8, the keyway plate; 81, the keyway; 9, the rotating shaft. Detailed Implementation Manner

[0048] The embodiments of the present application will be described in detail below with reference to the accompanying drawings. However, the present application can be implemented in many different ways defined and covered by the following.

[0049] Figure 1 is a schematic diagram of the overall structure of a preferred embodiment of the present application; Figure 2 is a schematic diagram of a flat-mouth split guide of the prior art; Figure 3 is a partial enlarged schematic diagram at position A; Figure 4 is a schematic diagram of a stepped split guide of the prior art; Figure 5 is a schematic diagram of a preferred embodiment of the present application without a part to be processed placed; Figure 6 is a schematic diagram of the structure of a sliding member of a preferred embodiment of the present application; Figure 7 is a schematic diagram of the structure of a turntable of a preferred embodiment of the present application; Figure 8 is a schematic diagram of the installation of a clamping member of a preferred embodiment of the present application;

[0050] Figure 9 is a schematic diagram of the installation of a sliding member of a preferred embodiment of the present application; Figure 10 is a schematic diagram of the installation of a support block of a preferred embodiment of the present application; Figure 11 is a schematic diagram of the installation of a first workpiece to be welded of a preferred embodiment of the present application;

[0051] Figure 12 is a schematic diagram of the overall top view after placing the first workpiece to be welded of a preferred embodiment of the present application; Figure 13 is a schematic diagram of the structure of a support plate of a preferred embodiment of the present application; Figure 14 is a schematic diagram of the installation of a second workpiece to be welded of a preferred embodiment of the present application; Figure 15 is a schematic diagram of the structure of a support block of a preferred embodiment of the present application; Figure 16 is a schematic diagram of the first workpiece to be welded and the second workpiece to be welded being lifted after welding is completed in a preferred embodiment of the present application; Figure 17 is a schematic diagram of the support block flipping upward in a preferred embodiment of the present application.

[0052] A welding device for a thin-walled guide is used to support and clamp a first workpiece to be welded 100 and a second workpiece to be welded 200 of the thin-walled guide and align the welding surfaces of the two. The welding device for the thin-walled guide includes a base 1, a sliding support assembly, a turntable 3, a support plate 4, and a rotating shaft 9:

[0053] The base 1 is used to support the first workpiece to be welded 100. The rotating shaft 9 is rotatably arranged in a preset shaft hole on the base 1. The support plate 4 is fixedly arranged at the top of the rotating shaft 9 extending out of the shaft hole of the base 1. The support plate 4 is used to support the second workpiece to be welded 200 and limit the second workpiece to be welded 200 axially and radially;

[0054] The turntable 3 is fixedly arranged on the rotating shaft 9, and the turntable 3 is located between the support plate 4 and the base 1. The support structure of the sliding support assembly is slidably arranged on the base 1 along the radial direction of the base 1. The support structure of the sliding support assembly is used to press against the welding surfaces of the first workpiece to be welded 100 and the second workpiece to be welded 200 after the first workpiece to be welded 100 and the second workpiece to be welded 200 are successively arranged on the base 1, so as to align the welding surfaces of the first workpiece to be welded 100 and the second workpiece to be welded 200; the rotating shaft 9 is used to drive the turntable 3 to rotate and push the support structure of the sliding support assembly to slide inwards along the radial direction of the base 1 through the turntable 3, so that the support structure of the sliding support assembly disengages from the first workpiece to be welded 100 and the second workpiece to be welded 200.

[0055] Here, the meaning of "base 1" refers to the structure for overall support. In some embodiments, the base 1 is a disc structure, and a shaft hole is provided at the center of the base 1. The shaft hole is connected to the rotating shaft 9 through a bearing. A limiting boss 14 is arranged on the base 1. The outer ring of the limiting boss 14 is set as the B surface, and the upper surface of the base 1 is provided with the A surface. The A surface is used to support the bottom of the first workpiece to be welded 100, and the B surface is used to support the inner side of the first workpiece to be welded 100 to realize the radial positioning of the first workpiece to be welded 100.

[0056] Here, the meanings of "the first workpiece to be welded 100" and "the second workpiece to be welded 200" refer to two parts of the guide vane that are to be welded into a whole. In some embodiments, the first workpiece to be welded 100 is the blade area of the guide vane, and the second workpiece to be welded 200 is the non-blade area of the guide vane.

[0057] In this application, by arranging a rotatable rotating shaft 9 on the base 1 and a support plate 4 on the top of the rotating shaft 9, the bottom of the first workpiece to be welded 100 can be supported by the base 1, and at the same time, the second workpiece to be welded 200 can be supported and limited by the support plate 4, so that the second workpiece to be welded 200 can be initially aligned with the welding surface of the first workpiece to be welded 100. Furthermore, by pressing against the second workpiece to be welded 200 with the sliding support assembly, the welding surface of the second workpiece to be welded 200 and the first workpiece to be welded 100 can be pressed, reducing problems such as uneven welding, deformation, and low efficiency caused by repeated processing on the welding surface, and ensuring the dimensional stability and consistency after welding. In addition, it is convenient to drive the sliding support assembly to slide inwards along the radial direction of the base 1 through the turntable 3 in the middle of the rotating shaft 9 to disengage from the pressing effect on the parts. For parts with small ends and a large welding part in the middle, it can be more conveniently and smoothly directly extracted, effectively improving the processing efficiency, reducing the collision damage of the parts to be processed, and ensuring the processing quality.

[0058] Preferably, please refer to Figure 1 、 6As shown in Fig. -17, the support structure of the sliding support assembly includes a sliding member 7. The sliding support assembly further includes a pushing member 2 and a clamping member 6. A plurality of first limiting grooves 11 are formed in a circular array on the base 1. A third limiting groove 13 communicating with the first limiting groove 11 is formed beside each first limiting groove 11. The sliding member 7 is slidably disposed in the first limiting groove 11 along the radial direction of the base 1. A second compression spring 72 is disposed between the sliding member 7 and the side wall of the first limiting groove 11. The second compression spring 72 is used to apply an elastic force to the sliding member 7 in the radially inward direction along the base 1. The clamping member 6 is slidably disposed in the third limiting groove 13. A first compression spring 61 is disposed between the clamping member 6 and the inner wall of the third limiting groove 13. The first compression spring 61 is used to apply an elastic force to the clamping member 6 to slide the clamping member 6 into the first limiting groove 11, so as to clamp the sliding member 7 and make the sliding member 7 press against the welding surfaces of the first workpiece to be welded 100 and the second workpiece to be welded 200. The pushing member 2 is disposed on the clamping member 6. The pushing member 2 is used to abut against the turntable 3. The turntable 3 is used to push the pushing member 2 during the rotation along the rotating shaft 9, so as to drive the clamping member 6 to disengage from the sliding member 7 through the pushing member 2, and further make the sliding member 7 loosen the limitation on the first workpiece to be welded 100 and the second workpiece to be welded 200.

[0059] It can be understood that the sliding member 7 has a tendency to slide radially inward along the base 1 under the push of the second compression spring 72, while the clamping member 6 can be pushed into the first limiting groove 11 by the first compression spring 61 to clamp the sliding member 7 and prevent the sliding member 7 from sliding radially inward along the base 1, so that the sliding member 7 can maintain the pressing and limiting on the first workpiece to be welded 100 and the second workpiece to be welded 200. After the turntable 3 pushes the pushing member 2 to drive the clamping member 6 to disengage from the sliding member 7, the sliding member 7 will be pushed by the second compression spring 72 to slide radially inward along the base 1. At this time, on the one hand, the sliding member 7 can be disengaged from the limitation on the first workpiece to be welded 100 and the second workpiece to be welded 200, and on the other hand, it is also convenient to replace the new parts later, and then manually push the sliding member 7 to press against the new workpieces to be welded. After the sliding member 7 is manually pushed to move within a certain range, the clamping member 6 can re-limit the sliding member 7 again. In this way, the quick and stable pressing and limiting of the parts can be realized, and the dimensional stability and consistency of the workpieces to be welded after welding can be ensured.

[0060] In some embodiments, multiple groups of sliding support assemblies are provided.

[0061] Optionally, the pushing member 2 is a cylindrical pin, which can reduce the frictional resistance on the side wall of the pushing member 2 during the sliding process, reduce the wear of the pushing member 2 on the parts in contact with it, and extend the service life of the parts.

[0062] Preferably, please refer to Figure 6-17As shown, the sliding support assembly further includes a support block 5. The first end of the support block 5 is hinged to the sliding member 7, and the sliding member 7 is further configured to, when sliding radially outward along the base 1, press against the welding surfaces of the first workpiece to be welded 100 and the second workpiece to be welded 200 through the second end of the support block 5.

[0063] It can be understood that the sliding member 7 can simultaneously press against, support, and limit the welding surfaces of the first workpiece to be welded 100 and the second workpiece to be welded 200 through the support block 5. Since the first end of the support block 5 is hinged to the sliding member 7, for the overall part after the welding of the first workpiece to be welded 100 and the second workpiece to be welded 200, which has a form of being small at both ends and large in the middle (welding area), the overall part can be directly lifted manually, driving the support block 5 to flip, thereby realizing the operation of quickly and directly removing the part, which is very convenient and effectively improves the processing efficiency.

[0064] In this preferred embodiment, the second end of the support block 5 has an arc surface structure.

[0065] It can be understood that by designing the second end of the support block 5 as an arc surface structure, the support area of the second end of the support block 5 can be increased, and phenomena such as easy bumping and damage to the workpiece to be welded caused by the support block 5 can be avoided, realizing stable support for the workpiece to be welded.

[0066] Specifically, the sliding member 7 includes a support portion 73 and a sliding portion 74. The support portion 73 is disposed on the sliding portion 74. The sliding portion 74 is slidably disposed in the first limiting groove 11 along the radial direction of the base 1. A limiting hole is formed at the top of the support portion 73. The first end of the support block 5 is connected to the limiting hole through a pin shaft. A support platform is disposed below the limiting hole of the support portion 73 for supporting the bottom of the support block 5.

[0067] It can be understood that the support platform on the support portion 73 can support and limit the support block 5, ensuring that the support block 5 is not easily displaced when pressing against and limiting the welding surfaces of the first workpiece to be welded 100 and the second workpiece to be welded 200, and ensuring the stability of support and positioning.

[0068] Optionally, the support portion 73 has a telescopic rod structure, which can drive the support block 5 to lift and lower to adjust the height of the support block 5, thereby adapting to the needs of a wider range of support working conditions.

[0069] Preferably, please refer to Figure 1 and Figure 6 As shown, an installation groove 71 is formed on the side wall of the sliding portion 74 of the sliding member 7 facing the outer circumference of the base 1. One end of the second compression spring 72 is inserted into the installation groove 71, and the installation groove 71 is used for limiting and guiding the second compression spring 72.

[0070] It can be understood that the second compression spring 72 can be limited and guided through the installation groove 71, preventing the second compression spring 72 from being prone to deviation or friction with the first limiting groove 11 during the compression or elongation process, not only ensuring the smooth sliding of the sliding member 7 but also improving the service life of the second compression spring 72.

[0071] Preferably, as shown in Figure 1 and Figure 6 , the sliding support assembly further includes a keyway plate 8. A second limiting groove 12 is provided beside the first limiting groove 11 on the base 1. The keyway plate 8 is fixedly arranged in the second limiting groove 12. A keyway 81 is provided on the keyway plate 8. The length direction of the keyway 81 is parallel to the length direction of the third limiting groove 13. The pushing member 2 is arranged through the keyway 81, and the keyway 81 is used to guide the pushing member 2.

[0072] It can be understood that the keyway 81 of the keyway plate 8 can guide the pushing member 2, ensuring that the pushing member 2 slides along the length direction of the second limiting groove 12, preventing the pushing member 2 from deviating and causing jamming and other phenomena, so as to ensure the smooth sliding of the positioning member 6 and stably abut and position the sliding member 7.

[0073] Preferably, as shown in Figure 1 and Figure 7 , a positioning groove 31 is provided on the turntable 3. An extension 32 is provided on one side of the positioning groove 31. The top end of the pushing member 2 is located in the positioning groove 31 and abuts against the extension 32. During the rotation of the turntable 3 along with the rotating shaft 9, the pushing member 2 is pushed by the extension 32, and the positioning groove 31 is used to limit the pushing member 2.

[0074] It can be understood that when the turntable 3 rotates, it can push the pushing member 2 through the extension 32. The pushing member 2 is slidably connected between the extension 32 and the side wall of the positioning groove 31. The pushing member 2 can be limited by the positioning groove 31 to prevent the pushing member 2 from detaching from the turntable 3, ensuring that the turntable 3 can smoothly drive the sliding member 7 and the support block 5 to move through the pushing member 2.

[0075] Optionally, a handle is provided on the turntable 3 to facilitate manually pushing the turntable 3 to rotate.

[0076] According to another aspect of the present application, a welding method for a thin-wall guide is also provided. Using the above-mentioned welding device for the thin-wall guide, the welding method for the thin-wall guide includes the following steps:

[0077] S100. Manually rotate the turntable 3 along with the rotating shaft 9, and push the support structure of the sliding support assembly to slide radially inwards along the base 1;

[0078] S200. Place the first workpiece to be welded 100 on the base 1, place the second workpiece to be welded 200 on the support plate 4, and align the welding surfaces of the second workpiece to be welded 200 and the first workpiece to be welded 100;

[0079] S300. Loosen the turntable 3, manually push the support structure of the sliding support assembly to slide radially outward along the base 1, and press against the welding surfaces of the first workpiece to be welded 100 and the second workpiece to be welded 200 through the support structure of the sliding support assembly;

[0080] S400. Weld the welding surfaces of the first workpiece to be welded 100 and the second workpiece to be welded 200 using a soldering iron.

[0081] The welding method of the thin-walled guide in this application also has the above beneficial effects. It also includes being able to conveniently and quickly clamp the first workpiece to be welded 100 and the second workpiece to be welded 200. Through the sliding support assembly, it effectively solves the problem that when the two parts of the wax mold of the flow channel surface of the guide with a thin-walled flow channel surface are assembled after disassembly, they can still be accurately aligned and firmly welded, ensuring that the welding process does not deform, thereby improving the welding accuracy and quality. At the same time, for parts that are small at both ends (the upper and lower installation edges of the inner ring of the guide) and large in the middle (the welding part), after being welded on this device, it is also convenient to quickly take them out by directly lifting them up.

[0082] Preferably, in step S300, manually push the sliding member 7 to drive the support block 5 to press against the welding surfaces of the first workpiece to be welded 100 and the second workpiece to be welded 200. When the sliding member 7 slides radially outward along the base 1, the positioning member 6 is pushed by the first compression spring 61 to enter the first limiting groove 11 to position the sliding member 7; after step S400, lift the welded part upward, and the support block 5 flips upward under the action of the thrust of the part to smoothly take out the part.

[0083] In some embodiments, for re-welding the guide that is disassembled in the wax mold stage, the welding method of the thin-walled guide in this application can adopt the following steps:

[0084] Rotate the handle of the turntable 3 counterclockwise, the component pusher 2 drives the positioning member 6 to slide, and the sliding member 7 retreats under the action of the second compression spring 72 and is stuck at the positioning member 6, so that multiple support blocks 5 arranged in an annular array simultaneously converge towards the center;

[0085] Place the first workpiece to be welded 100 (blade area component) on the base 1, the bottom of the first workpiece to be welded 100 is supported against the A surface for axial positioning, and the B surface on the base 1 performs radial positioning on the first workpiece to be welded 100, and the first workpiece to be welded 100 is fixedly placed;

[0086] Push the sliding member 7 one by one by hand to drive the support block 5 to move towards the circumference (radially outward of the base 1). As the sliding member 7 moves forward, the positioning member 6 will be ejected under the action of the first compression spring 61 and enter into the first limiting groove 11, and finally stop at the preset card slot at the tail of the sliding member 7, and the position of the support block 5 is limited and fixed;

[0087] Place the second workpiece to be welded 200 (non-blade area) on the support plate 4. There are positioning bosses on the support plate 4. Let the outer circular surface of the positioning boss be the D surface, and let the upper surface of the support plate 4 be the C surface. Use the C surface for axial positioning and the D surface for radial positioning to fix the second workpiece to be welded 200;

[0088] Let the arc surface at the second end of the support block 5 be the E surface. At this time, the splitting surfaces of the first workpiece to be welded 100 and the second workpiece to be welded 200 both rest on the E surface of the support block 5. After welding the two parts firmly with a soldering iron, manually hold the bottom of the welded integral part and lift it up. The component support block 5 will flip up under the action of the part thrust, and the part can be taken out smoothly.

[0089] The welding device of this application is simply designed and easy to operate. All thin-walled guides can adopt this scheme, which solves the problems of out-of-tolerance dimensions, deformation, and poor consistency during the welding process of the guide runner surface, and can effectively solve the problem that after the guide with a thin-walled runner surface is split, the two parts of the wax mold of its runner surface can still be accurately aligned and firmly welded during assembly, ensuring that the welding process does not deform, thereby improving the welding accuracy and quality. At the same time, for parts with small ends (the upper and lower installation edges of the guide inner ring) and large middle (welding area), it is also convenient to take out after welding on this device, effectively reducing the work difficulty of operators, and at the same time improving the welding efficiency and production efficiency.

[0090] It should be noted that in this article, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0091] Specific examples are used in this article to elaborate on the principle and implementation manner of this application. The description of the above examples is only used to help understand the method and its core idea of this application. The above is only the preferred implementation manner of this application. It should be noted that due to the limited nature of written expression and objectively existing infinite specific structures, for those of ordinary skill in the art in this technical field, without departing from the principle of this application, several improvements, refinements or changes can be made, or the above technical features can be combined in an appropriate manner; these improvements, refinements, changes or combinations, or directly applying the inventive concept and technical solution to other occasions without improvement, should all be regarded as the protection scope of this application.

Claims

1. A welding device for a thin-walled guide, which is used to support and clamp a first workpiece to be welded (100) and a second workpiece to be welded (200) of the thin-walled guide, and align the welding surfaces of the two, characterized in that, The welding device for the thin-walled guide includes a base (1), a sliding support assembly, a turntable (3), a support plate (4) and a rotating shaft (9): The base (1) is used to support the first workpiece to be welded (100). The rotating shaft (9) is rotatably arranged in a preset shaft hole on the base (1). The support plate (4) is fixedly arranged at the top of the rotating shaft (9) extending out of the shaft hole of the base (1). The support plate (4) is used to support the second workpiece to be welded (200) and limit the second workpiece to be welded (200) axially and radially; The turntable (3) is fixedly arranged on the rotating shaft (9), and the turntable (3) is located between the support plate (4) and the base (1). The support structure of the sliding support assembly is slidably arranged on the base (1) along the radial direction of the base (1). The support structure of the sliding support assembly is used to press against the welding surfaces of the first workpiece to be welded (100) and the second workpiece to be welded (200) after the first workpiece to be welded (100) and the second workpiece to be welded (200) are successively installed on the base (1), so that the welding surfaces of the first workpiece to be welded (100) and the second workpiece to be welded (200) are aligned; The rotating shaft (9) is used to drive the turntable (3) to rotate and push the support structure of the sliding support assembly to slide inwards along the radial direction of the base (1) through the turntable (3), so that the support structure of the sliding support assembly is disengaged from the first workpiece to be welded (100) and the second workpiece to be welded (200).

2. The welding device for a thin-walled guide according to claim 1, characterized in that, The support structure of the sliding support assembly includes a sliding member (7). The sliding support assembly also includes a pushing member (2) and a positioning member (6). A plurality of first limiting grooves (11) are annularly arrayed on the base (1). A third limiting groove (13) communicating with the first limiting groove (11) is arranged beside each first limiting groove (11). The sliding member (7) is slidably arranged in the first limiting groove (11) along the radial direction of the base (1). A second compression spring (72) is arranged between the sliding member (7) and the side wall of the first limiting groove (11). The second compression spring (72) is used to apply an elastic force to the sliding member (7) in the radially inward direction of the base (1). The positioning member (6) is slidably arranged in the third limiting groove (13). A first compression spring (61) is arranged between the positioning member (6) and the inner wall of the third limiting groove (13). The first compression spring (61) is used to apply an elastic force to the positioning member (6) to slide from the third limiting groove (13) into the first limiting groove (11), so that the positioning member (6) catches the sliding member (7) to make the sliding member (7) press against the welding surfaces of the first workpiece to be welded (100) and the second workpiece to be welded (200); The pushing member (2) is arranged on the positioning member (6). The pushing member (2) is used to abut against the turntable (3). The turntable (3) is used to push the pushing member (2) during the rotation with the rotating shaft (9), so as to drive the positioning member (6) to disengage from the sliding member (7) through the pushing member (2), so that the sliding member (7) releases the limitation on the first workpiece to be welded (100) and the second workpiece to be welded (200).

3. The welding device for a thin-walled guide according to claim 2, characterized in that, The support structure of the sliding support assembly further includes a support block (5). The first end of the support block (5) is hinged to the sliding member (7), and the sliding member (7) is further configured to, when sliding radially outward along the base (1), press against the welding surfaces of the first workpiece to be welded (100) and the second workpiece to be welded (200) through the second end of the support block (5).

4. A welding device for a thin-walled guide, according to claim 3, characterized in that, The second end of the support block (5) is of an arc surface structure.

5. The welding device for a thin-walled guide according to claim 3, characterized in that, The sliding member (7) includes a support portion (73) and a sliding portion (74). The support portion (73) is disposed on the sliding portion (74). The sliding portion (74) is slidably disposed in the first limiting groove (11) along the radial direction of the base (1). A limiting hole is provided at the top of the support portion (73). The first end of the support block (5) is connected to the limiting hole through a pin shaft. A support platform is provided below the limiting hole of the support portion (73) for supporting the bottom of the support block (5).

6. The welding device for a thin-walled guide according to claim 5, characterized in that, An installation groove (71) is provided on the side wall of the sliding portion (74) of the sliding member (7) facing the outer circumference of the base (1). One end of the second compression spring (72) is inserted into the installation groove (71), and the installation groove (71) is used for limiting and guiding the second compression spring (72).

7. A welding device for a thin-walled guide, according to claim 2, characterized in that The sliding support assembly further includes a keyway plate (8). A second limiting groove (12) is provided on the base (1) beside the first limiting groove (11). The keyway plate (8) is fixedly disposed in the second limiting groove (12). A keyway (81) is provided on the keyway plate (8). The length direction of the keyway (81) is parallel to the length direction of the third limiting groove (13). The pushing member (2) is disposed through the keyway (81), and the keyway (81) is used for guiding the pushing member (2).

8. The welding device for a thin-walled guide according to claim 2, characterized in that, A clamping groove (31) is provided on the turntable (3). An extension portion (32) is provided on one side of the clamping groove (31). The top end of the pushing member (2) is located in the clamping groove (31) and abuts against the extension portion (32). During the rotation of the turntable (3) with the rotating shaft (9), the pushing member (2) is pushed by the extension portion (32), and the clamping groove (31) is used for limiting the pushing member (2).

9. A welding method for a thin-walled guide, characterized in that, For a welding device using the thin-wall guide as described in any one of claims 1-8, the welding method of the thin-wall guide includes the following steps: S100. Manually turn the turntable (3) to rotate with the rotating shaft (9), and push the support structure of the sliding support assembly to slide radially inward along the base (1). S200. Place the first workpiece to be welded (100) on the base (1), place the second workpiece to be welded (200) on the support plate (4), and align the welding surface of the second workpiece to be welded (200) with the welding surface of the first workpiece to be welded (100). S300. Release the turntable (3), manually push the support structure of the sliding support assembly to slide radially outward along the base (1), and press against the welding surfaces of the first workpiece to be welded (100) and the second workpiece to be welded (200) through the support structure of the sliding support assembly. S400. Weld the welding surfaces of the first workpiece to be welded (100) and the second workpiece to be welded (200) using a soldering iron.

10. A welding method for a thin-walled guide, according to claim 9, characterized in that In step S300, manually push the sliding member (7) to drive the support block (5) to press against the welding surfaces of the first workpiece to be welded (100) and the second workpiece to be welded (200). When the sliding member (7) slides radially outward along the base (1), the positioning member (6) is pushed by the first compression spring (61) into the first limiting groove (11) to position the sliding member (7). After step S400, lift the welded part upward. The support block (5) flips upward under the thrust of the part, so that the part can be taken out smoothly.

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