A welding fixture for annular products

Abstract

The utility model belongs to welding technical field discloses a kind of welding tool for annular product.This welding tool includes tool main body, multiple pressing plate and multiple locking piece, annular product can be set in the outer periphery of tool main body, multiple pressing plate is spaced distribution around the outer periphery of tool main body, locking piece is used to lock pressing plate in tool main body, to make pressing plate compress annular product in the outer periphery of tool main body.By setting multiple pressing plate, the clamping force that annular product is received in circumferential direction is consistent, avoid local stress concentration, reduce the initial deformation caused by annular product mounting and clamping uneven stress, and the even type compression of multiple pressing plate provides more uniform constraint to annular product, improve the ability of resistance to deformation of annular product caused by welding thermal cycle;Annular product is set on tool main body, with tool main body large-area contact, can help to conduct the heat of welding area, reduce temperature gradient on annular product, thereby reduce the deformation caused by thermal stress.

Description

Technical Field

[0001] This utility model relates to the field of welding technology, and in particular to a welding fixture for ring-shaped products. Background Technology

[0002] In the soldering of ring-shaped products for semiconductor equipment, a three-jaw chuck is typically used to clamp and fix the ring-shaped product before soldering. However, when using a three-jaw chuck to clamp and fix the ring-shaped product, the contact area between the chuck and the product is small, with only three jaws in contact. Furthermore, the force on the ring-shaped product is uneven, resulting in significant deformation during soldering and poor soldering performance.

[0003] Therefore, there is a need to provide a welding fixture for ring-shaped products to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a welding fixture for ring-shaped products, which reduces the mounting deformation and welding thermal deformation of ring-shaped products and improves the welding quality of ring-shaped products.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A welding fixture for ring-shaped products, comprising:

[0007] The tooling body, the ring-shaped product can be fitted onto the outer periphery of the tooling body;

[0008] Multiple pressure plates and multiple locking elements are provided. The multiple pressure plates are distributed at intervals around the outer periphery of the tooling body. The locking elements are used to lock the pressure plates to the tooling body so that the pressure plates press the annular product against the outer periphery of the tooling body.

[0009] Preferably, the tooling body has a plurality of first threaded holes, which are spaced apart around the outer periphery of the tooling body. The pressure plate has a second threaded hole, and the locking member passes through the second threaded hole and the first threaded hole to be threadedly connected to the pressure plate and the tooling body.

[0010] Preferably, the tooling body has a plurality of first pin holes, which are spaced apart around the outer periphery of the tooling body. The pressure plate has a second pin hole, and the locking member passes through the second pin hole and the first pin hole to be interference-fitted with the pressure plate and the tooling body.

[0011] Preferably, the pressure plate is a rectangular block, and an anti-slip layer is provided on the side of the rectangular block facing the annular product.

[0012] Preferably, the rectangular block is provided with rubber on the side facing the annular product to form the anti-slip layer.

[0013] Preferably, the rectangular block is coated with an anti-slip coating on the side facing the annular product to form the anti-slip layer.

[0014] Preferably, the annular product has multiple through holes around its circumference, the pressure plate includes a pressing part and an insertion part, the insertion part is inserted into the through holes, and the length of the insertion part is less than the length of the through holes, and the pressing part presses against the annular product.

[0015] Preferably, the outer periphery of the annular product is provided with a protrusion, and the pressing part is provided with a groove facing a corresponding side of the annular product. The protrusion matches the groove, and when the pressing part presses against the annular product, the protrusion is located in the groove.

[0016] Preferably, the number of pressure plates and locking elements is 18 each.

[0017] Preferably, the tooling body is made of 304 stainless steel.

[0018] The beneficial effects of this utility model are:

[0019] This welding fixture for ring-shaped products includes a fixture body, multiple pressure plates, and multiple locking elements. The ring-shaped product can be fitted onto the outer circumference of the fixture body. The multiple pressure plates are spaced apart around the outer circumference of the fixture body, and the locking elements are used to lock the pressure plates to the fixture body, so that the pressure plates press the ring-shaped product tightly against the outer circumference of the fixture body. The ring-shaped product to be welded is directly fitted onto the outer circumference of the fixture body. The fixture body provides initial radial positioning and centering for the ring-shaped product. The multiple pressure plates are evenly spaced along the outer circumference of the fixture body. The locking elements are used to lock each pressure plate radially inward and fix it to the fixture body. When the pressure plate is locked, the pressure plate applies a clamping force to the ring-shaped product. Since there are multiple pressure plates evenly distributed around the outer circumference of the fixture body, the multiple pressure plates provide spaced clamping forces along the outer circumference of the ring-shaped product. The ring-shaped product is pressed tightly against the fixture body by the pressure plates. The fixture body provides internal support, and the multiple pressure plates provide external constraints, together clamping and fixing the ring-shaped product.

[0020] Compared to existing technologies, this invention provides a welding fixture for ring-shaped products. By applying evenly distributed clamping forces to the outer circumference of the ring-shaped product using multiple pressure plates, the clamping force on the ring-shaped product is consistent in the circumferential direction, avoiding localized stress concentration and reducing initial deformation caused by uneven force during mounting. Furthermore, the uniform clamping of the multiple pressure plates provides more uniform constraint on the ring-shaped product, improving its resistance to deformation caused by welding thermal cycles. The ring-shaped product, fitted onto the fixture body, has a large contact area with the fixture body, which helps conduct heat from the welding area, reducing the temperature gradient on the ring-shaped product and thus reducing deformation caused by thermal stress. This welding fixture for ring-shaped products utilizes the fixture body to provide large-area internal support and multiple evenly distributed pressure plates to provide uniform external clamping forces, stably constraining the ring-shaped product on the welding fixture, effectively reducing mounting deformation and welding thermal deformation, and improving the welding quality of the ring-shaped product. Attached Figure Description

[0021] Figure 1 This is a front view of the welding fixture for ring-shaped products provided by this utility model;

[0022] Figure 2 This is a cross-sectional view of the welding fixture for ring-shaped products provided by this utility model;

[0023] Figure 3 This is a top view of the pressure plate provided in one embodiment of this utility model;

[0024] Figure 4 This is a cross-sectional view of the pressure plate provided in one embodiment of this utility model;

[0025] Figure 5 This is a top view of the pressure plate provided in another embodiment of this utility model;

[0026] Figure 6 This is a cross-sectional view of the pressure plate provided in another embodiment of this utility model.

[0027] In the picture:

[0028] 1. Tooling body; 11. First threaded hole; 12. First pin hole;

[0029] 2. Pressure plate; 21. Second threaded hole; 22. Second pin hole; 23. Pressing part; 24. Insertion part; 25. Groove. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0031] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] In the description of this embodiment, the terms "upper," "lower," "left," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0034] In the soldering of ring-shaped products for semiconductor equipment, a three-jaw chuck is typically used to clamp and fix the ring-shaped product before soldering. However, when using a three-jaw chuck to clamp and fix the ring-shaped product, the contact area between the chuck and the product is small, with only three jaws in contact. Furthermore, the force on the ring-shaped product is uneven, resulting in significant deformation during soldering and poor soldering performance.

[0035] Therefore, such as Figures 1-6As shown, this embodiment provides a welding fixture for ring-shaped products. The welding fixture for ring-shaped products includes a fixture body 1, multiple pressure plates 2 and multiple locking members. The ring-shaped product can be fitted onto the outer periphery of the fixture body 1. The multiple pressure plates 2 are distributed at intervals around the outer periphery of the fixture body 1. The locking members are used to lock the pressure plates 2 to the fixture body 1 so that the pressure plates 2 press the ring-shaped product tightly against the outer periphery of the fixture body 1.

[0036] The annular product to be welded is directly fitted onto the outer circumference of the fixture body 1. The fixture body 1 provides initial radial positioning and centering for the annular product. Multiple pressure plates 2 are evenly spaced along the outer circumference of the fixture body 1. Each pressure plate 2 is radially locked and fixed to the fixture body 1 using locking devices. When the pressure plate 2 is locked, it applies a clamping force to the annular product. Since there are multiple pressure plates 2 evenly distributed around the outer circumference of the fixture body 1, the multiple pressure plates 2 provide a spaced clamping force along the outer circumference of the annular product. The annular product is pressed against the fixture body 1 by the pressure plates 2. The fixture body 1 provides internal support, and the multiple pressure plates 2 provide external constraints, together clamping and fixing the annular product.

[0037] Compared to existing technologies, the welding fixture for ring-shaped products in this embodiment applies evenly distributed clamping forces to the outer circumference of the ring-shaped product using multiple pressure plates 2. This ensures consistent clamping force on the ring-shaped product in the circumferential direction, avoiding localized stress concentration and reducing initial deformation caused by uneven force during mounting. Furthermore, the uniform clamping of the multiple pressure plates 2 provides more uniform constraint on the ring-shaped product, improving its resistance to deformation caused by welding thermal cycles. The ring-shaped product, fitted onto the fixture body 1, has a large contact area with it, which helps conduct heat from the welding area, reducing the temperature gradient on the ring-shaped product and thus minimizing deformation caused by thermal stress. This welding fixture for ring-shaped products utilizes the fixture body 1 to provide large-area internal support and multiple evenly distributed pressure plates 2 to provide uniform external clamping forces, stably constraining the ring-shaped product on the welding fixture. This effectively reduces mounting deformation and welding thermal deformation, improving the welding quality of the ring-shaped product.

[0038] It is understandable that the outer diameter of the tooling body 1 matches the inner diameter of the annular product so that the annular product can fit with the outer periphery of the tooling body 1 with clearance.

[0039] In one alternative embodiment, such as Figure 1 , Figure 2As shown, the tooling body 1 has multiple first threaded holes 11, which are spaced apart around the outer circumference of the tooling body 1. The pressure plate 2 has a second threaded hole 21. The locking member passes through the second threaded hole 21 and the first threaded hole 11 to be threadedly connected to the pressure plate 2 and the tooling body 1. The annular product is fitted onto the outer circumference of the tooling body 1, and the pressure plate 2 is placed on the annular product, aligning the second threaded hole 21 of the pressure plate 2 with a first threaded hole 11 on the tooling body 1. The locking member is screwed into the second threaded hole 21 of the pressure plate 2 and the corresponding first threaded hole 11 of the tooling body 1. When the locking member is tightened, the pressure plate 2 applies a clamping force to the annular product, pressing it firmly against the tooling body 1. Multiple pressure plates 2 are then fixed in sequence using the above method. The threaded locking method provides a secure mechanical connection, keeping the annular product stable throughout the welding process and preventing deformation or displacement. After welding, the locking member can be turned in the opposite direction to release the pressure of the pressure plate 2 on the annular product, allowing for simple and quick removal of the annular product.

[0040] When the annular product has multiple through holes corresponding to the multiple first threaded holes 11 on the tooling body 1, the annular product is fitted onto the tooling body 1, and the multiple through holes are aligned with the first threaded holes 11. When the pressure plate 2 is locked using a locking member, the locking member passes through the second threaded hole 21, the through hole, and the first threaded hole 11. When the annular product does not have through holes, the annular product is fitted onto the tooling body 1, and the annular product avoids the multiple first threaded holes 11. When the pressure plate 2 is locked using a locking member, the locking member passes through the second threaded hole 21 and the first threaded hole 11, and the locked pressure plate 2 is at least partially pressed against the annular product.

[0041] It should be noted that the locking element can be a screw or a bolt.

[0042] In another alternative embodiment, such as Figure 1 , Figure 2As shown, the tooling body 1 has multiple first pin holes 12, which are spaced apart around the outer periphery of the tooling body 1. The pressure plate 2 has a second pin hole 22. The locking member passes through the second pin hole 22 and the first pin hole 12 to be interference-fitted with the pressure plate 2 and the tooling body 1. The annular product is fitted onto the outer periphery of the tooling body 1, and the pressure plate 2 is placed on the annular product, with the second pin hole 22 of the pressure plate 2 aligned with a first pin hole 12 on the tooling body 1. The locking member is pressed into the second pin hole 22 of the pressure plate 2 and the corresponding first pin hole 12 of the tooling body 1. After the locking member is pressed in, the locking member generates a radial expansion force with the first pin hole 12 and the second pin hole 22, so that the pressure plate 2 is tightly fixed to the tooling body 1. The pressure plate 2 applies a clamping force to the annular product to press the annular product tightly against the tooling body 1. Multiple pressure plates 2 can be fixed in sequence in the above manner. The interference fit provides a strong mechanical connection, keeping the ring product stable throughout the welding process and preventing deformation or displacement. After welding, the locking piece can be pulled out to release the pressure plate 2 on the ring product, allowing the ring product to be removed.

[0043] When the annular product has multiple through holes corresponding to the multiple first pin holes 12 on the tooling body 1, the annular product is fitted onto the tooling body 1, and the multiple through holes are aligned with the first pin holes 12. When the pressure plate 2 is locked using a locking member, the locking member passes through the second pin hole 22, the through hole, and the first pin hole 12. When the annular product does not have through holes, the annular product is fitted onto the tooling body 1, and the annular product avoids the multiple first pin holes 12. When the pressure plate 2 is locked using a locking member, the locking member passes through the second pin hole 22 and the first pin hole 12, and the locked pressure plate 2 is at least partially pressed against the annular product.

[0044] It should be noted that the locking element can be a pin. A press can be used to press the pin in, and a pin-pulling tool can be used to pull it out.

[0045] In one alternative embodiment, such as Figure 3 , Figure 4 As shown, the pressure plate 2 is a rectangular block, and an anti-slip layer is provided on the side of the rectangular block facing the annular product. When using this rectangular block to press the annular product, at least a portion of the rectangular block abuts against the annular product, and the part of the rectangular block in contact with the annular block is provided with an anti-slip layer. The anti-slip layer can increase the friction between the pressure plate 2 and the annular product, prevent minor slippage between the annular product and the pressure plate 2 during the welding process, and improve the welding accuracy.

[0046] Optionally, the rectangular block is provided with rubber on the side facing the annular product to form the aforementioned anti-slip layer. The rubber not only increases the friction between the pressure plate 2 and the annular product, but also prevents the pressure plate 2 from directly contacting the surface of the annular product, thus preventing scratches on the surface of the annular product.

[0047] Optionally, the side of the rectangular block facing the annular product is coated with an anti-slip coating to form the aforementioned anti-slip layer. Applying the anti-slip coating increases the friction between the pressure plate 2 and the annular product, and the coating cost is low. The anti-slip coating can be epoxy resin anti-slip coating, polyurethane-based anti-slip coating, etc., and this embodiment is not limited to any particular type.

[0048] In another alternative embodiment, such as Figure 5 , Figure 6 As shown, the annular product has multiple through holes around its circumference. The pressure plate 2 includes a pressing part 23 and an insertion part 24. The insertion part 24 is inserted into the through holes, and the length of the insertion part 24 is less than the length of the through holes. The pressing part 23 presses against the annular product. By providing the insertion part 24, the pressure plate 2's insertion part 24 is inserted into the through holes, ensuring the positioning accuracy of the annular product and preventing axial displacement of the annular product. Furthermore, the length of the insertion part 24 is less than the length of the through holes, ensuring that the pressing part 23 can stably press against the annular product. The insertion part 24 and the pressing part 23 are integrally formed.

[0049] Furthermore, such as Figure 5 , Figure 6 As shown, the outer periphery of the annular product has protrusions, and the pressing part 23 has a recessed groove 25 facing a corresponding side of the annular product. The protrusions and grooves 25 match, and when the pressing part 23 presses against the annular product, the protrusions are located within the grooves 25. By providing a groove 25 that matches the protrusions on the outer periphery of the annular product, the pressing part 23 can provide stable pressure when pressing against the annular product and will not be affected by the protrusions on the outer periphery of the annular product.

[0050] Optionally, such as Figure 1 As shown, there are 18 pressure plates 2 and locking components. The 18 pressure plates 2 are distributed circumferentially around the annular product, and the 18 locking components are used to lock the pressure plates 2 onto the fixture body 1. The 18 pressure plates 2 work together to press the annular product onto the fixture body 1, so as to provide uniform clamping force for the annular product and improve its ability to resist the deformation of the annular product caused by welding thermal cycling.

[0051] Optionally, the tooling body 1 is made of 304 stainless steel. 304 stainless steel has good thermal stability, ensuring that the tooling body 1 is not easily deformed during the welding of the ring-shaped product. It should be noted that other materials can also be used to make the tooling body 1; this embodiment does not limit its use.

[0052] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A welding fixture for ring-shaped products, characterized in that, include: Tooling body (1), the ring product can be fitted onto the outer periphery of the tooling body (1); Multiple pressure plates (2) and multiple locking elements are provided. The multiple pressure plates (2) are distributed at intervals around the outer periphery of the tooling body (1). The locking elements are used to lock the pressure plates (2) to the tooling body (1) so that the pressure plates (2) press the annular product against the outer periphery of the tooling body (1). The tooling body (1) has a plurality of first threaded holes (11) and the plurality of first threaded holes (11) are distributed at intervals around the outer periphery of the tooling body (1). The pressure plate (2) has a second threaded hole (21) through it. The locking member passes through the second threaded hole (21) and the first threaded hole (11) to be threadedly connected to the pressure plate (2) and the tooling body (1).

2. The welding fixture for ring-shaped products according to claim 1, characterized in that, The tooling body (1) has a plurality of first pin holes (12), which are spaced apart around the outer periphery of the tooling body (1). The pressure plate (2) has a second pin hole (22) through it. The locking member passes through the second pin hole (22) and the first pin hole (12) to be interference-fitted with the pressure plate (2) and the tooling body (1).

3. The welding fixture for ring-shaped products according to claim 1, characterized in that, The pressure plate (2) is a rectangular block, and an anti-slip layer is provided on the side of the rectangular block facing the annular product.

4. The welding fixture for ring-shaped products according to claim 3, characterized in that, The rectangular block has a rubber layer on the side facing the annular product to form the anti-slip layer.

5. The welding fixture for ring-shaped products according to claim 3, characterized in that, The rectangular block is coated with an anti-slip coating on the side facing the annular product to form the anti-slip layer.

6. The welding fixture for ring-shaped products according to claim 1, characterized in that, The annular product has multiple through holes around its circumference. The pressure plate (2) includes a pressing part (23) and a plug-in part (24). The plug-in part (24) is inserted into the through hole, and the length of the plug-in part (24) is less than the length of the through hole. The pressing part (23) presses against the annular product.

7. The welding fixture for ring-shaped products according to claim 6, characterized in that, The outer periphery of the annular product is provided with a protrusion, and the pressing part (23) is provided with a groove (25) facing a corresponding side of the annular product. The protrusion matches the groove (25). When the pressing part (23) presses against the annular product, the protrusion is located in the groove (25).

8. The welding fixture for ring-shaped products according to any one of claims 1-7, characterized in that, The number of pressure plates (2) and locking components is 18 each.

9. The welding fixture for ring-shaped products according to any one of claims 1-7, characterized in that, The main body of the tooling (1) is made of 304 stainless steel.

Images