Rotary friction welding clamp and welding tool
By designing a rotary friction welding fixture suitable for palm-type bionic molds, the problems of many pores, color difference and oxide impurities in the preparation of palm-type bionic molds are solved, and high-quality welding effect is achieved.
Patent Information
- Application Number
- CN202411853463.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-16
- Publication Date
- 2025-02-18
AI Technical Summary
In the prior art, palm-type bionic molds have defects such as many pores, color difference, and a large amount of oxide impurities during the preparation process, and traditional rotary friction welding fixtures cannot be suitable for thin-walled special-shaped structures of palm-type bionic molds.
A rotary friction welding fixture is designed, including an outer mold and an inner mold. A first gap is set between the arm-shaped embryo body in the outer mold and the palm-shaped embryo external clamping module, and an arm-shaped embryo body and a palm-shaped embryo in the inner mold. The intrabody clamp module is rotatable for rotary friction welding.
This rotary friction welding fixture can effectively clamp and fix the special-shaped embryo body of the palm-type bionic mold, improve welding problems, improve welding quality, reduce pores and oxide impurities, and improve product quality.
Smart Images
Figure CN119457398A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of palm-shaped bionic mold manufacturing, and in particular to a rotary friction welding fixture and a welding tool. Background Art
[0002] In the prior art, stir friction welding is mainly used in the preparation process of palm-shaped bionic molds. However, the palm-shaped bionic molds prepared by this process have defects such as many pores, color difference, and a large amount of oxide impurities. Based on this, the inventors have found that the use of rotary friction welding to prepare palm-shaped bionic molds can improve the defects of palm-shaped bionic molds such as many pores, color difference, and a large amount of oxide impurities. However, since the products suitable for traditional rotary friction welding fixtures are usually thick parts (thickness requirements are usually above 2mm) or regular parts, and the constituent embryos of palm-shaped bionic molds are usually special-shaped parts with thin wall thickness (wall thickness is usually 0.8-1.0mm), there is currently no rotary friction welding fixture that can be applied to palm-shaped bionic molds. Summary of the invention
[0003] The purpose of the present application is to provide a rotary friction welding fixture and a welding tool, which can be applied to palm-shaped bionic molds so that rotary friction welding can be used to prepare palm-shaped bionic molds. In addition, it can also be applied to rotary friction welding of other ultra-thin parts with perfect circular welding ports.
[0004] The embodiment of the present application is implemented as follows:
[0005] In the first aspect, the embodiment of the present application provides a rotary friction welding fixture for rotary friction welding an arm-shaped embryo and a palm-shaped embryo to form a bionic model, and the rotary friction welding fixture includes an outer mold and an inner mold. The outer mold includes an arm-shaped embryo external clamping module and a palm-shaped embryo external clamping module arranged in sequence, the arm-shaped embryo external clamping module is used to fix the arm-shaped embryo, and the palm-shaped embryo external clamping module is used to fix the palm-shaped embryo, and there is a first gap between the arm-shaped embryo external clamping module and the palm-shaped embryo external clamping module corresponding to the welding point between the arm-shaped embryo and the palm-shaped embryo; the inner mold has a connected arm-shaped embryo internal clamping module and a palm-shaped embryo internal clamping module, the arm-shaped embryo internal clamping module is used to be arranged in the arm-shaped embryo to clamp the arm-shaped embryo together with the arm-shaped embryo external clamping module, and the palm-shaped embryo internal clamping module is used to be arranged in the palm-shaped embryo to clamp the palm-shaped embryo together with the palm-shaped embryo external clamping module; the inner mold is configured to be rotatable to perform rotary friction welding at the connection between the arm-shaped embryo and the palm-shaped embryo.
[0006] In the above technical scheme, the rotary friction welding fixture includes an outer mold and an inner mold. Specifically, the arm-shaped embryo outer clamping module in the outer mold is used to fit the outer wall of the arm-shaped embryo body, and the palm-shaped embryo outer clamping module in the outer mold is used to fit the outer wall of the palm-shaped embryo body, and there is a first gap for discharge between the two corresponding to the welding point between the arm-shaped embryo body and the palm-shaped embryo body; the arm-shaped embryo body inner clamping module in the inner mold is used to fit the inner wall of the arm-shaped embryo body and play a role in supporting the arm-shaped embryo body, and the palm-shaped embryo body inner clamping module in the inner mold is used to fit the inner wall of the palm-shaped embryo body and support the palm-shaped embryo body, and the inner mold can rotate so that the connection between the arm-shaped embryo body and the palm-shaped embryo body can rotate relative to each other to generate heat and achieve welding. Through the joint action of the arm-shaped embryo external clamping module and the arm-shaped embryo internal clamping module, the arm-shaped embryo with an irregular shape and a thin wall thickness can be effectively clamped and fixed. Through the joint action of the palm-shaped embryo external clamping module and the palm-shaped embryo internal clamping module, the palm-shaped embryo with an irregular shape and a thin wall thickness can be effectively clamped and fixed. That is, the combination of the outer mold and the inner mold of the specific structure can effectively clamp and fix the two major constituent embryos of the palm-shaped bionic mold. In other words, the rotary friction welding fixture of the specific structure provided in the embodiment of the present application can be applied to the palm-shaped bionic mold, so that the rotary friction welding process can be used to prepare the palm-shaped bionic mold. In addition, it can also be applied to the rotary friction welding of other ultra-thin parts with perfect circular welding ports.
[0007] In some optional embodiments, a first groove is provided at a position corresponding to a welding position in a connection between the arm-shaped embryo body clamping module and the palm-shaped embryo body clamping module, and the first groove is recessed in a direction away from the outer mold.
[0008] In the above technical scheme, a first groove which is recessed in the direction away from the outer mold is provided at the connection between the arm-shaped embryo body clamping module and the palm-shaped embryo body clamping module at the position corresponding to the welding point, so as to provide a material removal space for the aluminum material during the process of friction, heat melting and extrusion of the two embryos towards each other, so that the aluminum material that has not been completely melted together at the inner walls of the two embryos is accumulated in the first groove after extrusion (this part of the aluminum material will be removed in the subsequent process and will not remain on the product), thereby improving the problem of poor welding at the inner walls of the two embryos, so as to prepare a palm-shaped bionic mold with better quality.
[0009] In some optional embodiments, the first groove has a recessed depth of no greater than 1 mm.
[0010] In the above technical solution, the upper limit of the depression depth of the first groove is limited within a specific range so that the amount of aluminum material accumulated there is more appropriate, which can improve the problem of excessive aluminum material accumulation and inconvenience in demolding, thereby making it easier to remove the prepared palm-shaped bionic mold from the mold.
[0011] In some optional embodiments, the size of the first gap is 2 to 15 mm.
[0012] In the above technical solution, the size of the first gap (i.e., the distance between the end faces of the arm-shaped embryo body clamping module and the palm-shaped embryo body clamping module) is limited to a specific range, which can effectively clamp and fix the two embryos while providing a suitable size of material removal space for the aluminum material, thereby improving the problem of easy deformation of the two embryos at the welding point while improving the welding quality.
[0013] In some optional embodiments, the wrist of the palm-shaped embryo is a columnar segment, and the palm-shaped embryo body inner clamping module extends to an end of the columnar segment away from the first gap.
[0014] In the above technical solution, with regard to the cylindrical segment structure at the wrist of the palm-shaped embryo, based on the structure of the palm-shaped embryo, the palm-shaped embryo body internal clamping module is set to a specific form that can extend to the end of the cylindrical segment away from the first gap. This setting makes it difficult for the palm-shaped embryo to deform at the welding point and can also make the two embryos have better concentricity at the end close to the welding point after welding is completed.
[0015] In some optional embodiments, a section of the arm-shaped embryo external clamping module close to the first gap is a first clamping section, and a section of the palm-shaped embryo external clamping module close to the first gap is a second clamping section; a section of the first gap of the arm-shaped embryo internal clamping module is a third clamping section, the third clamping section and the first clamping section are used to jointly clamp a section of the arm-shaped embryo close to the palm-shaped embryo, and the second clamping section and the palm-shaped embryo internal clamping module are used to jointly clamp a section of the palm-shaped embryo close to the arm embryo; the interior of the palm-shaped embryo internal clamping module is a hollow structure, and the hollow structure extends into the third clamping section, the thickness of the palm-shaped embryo internal clamping module is consistent with the thickness of the second clamping section, and the thickness of the third clamping section is consistent with the thickness of the first clamping section.
[0016] In the above technical scheme, the thickness of the palm-shaped embryo inner clamping module and the thickness of the second clamping section of the palm-shaped embryo outer clamping module, and the thickness of the third clamping section of the arm-shaped embryo inner clamping module and the thickness of the first clamping section of the arm-shaped embryo outer clamping module are set to the same form, that is, the thicknesses of the two inner and outer clamp modules near the first gap are set to the same form, so that the heat absorption effects of the inner and outer clamp modules in the corresponding areas are basically the same, which helps to achieve better melting effect of the two embryos at the ends near the welding point, and thus helps to improve the welding effect.
[0017] In some optional embodiments, the thickness of the first clamping section and / or the thickness of the second clamping section is 1 to 20 mm.
[0018] In the above technical solution, the thickness of the inner and outer clamp modules near the welding point is limited to a specific range, which can effectively clamp and fix the two embryos while allowing the clamp modules themselves to have a more suitable heat absorption capacity, thereby improving the problem of easy deformation of the two embryos at the welding point while improving the welding quality.
[0019] In some optional embodiments, the inner circumferential wall of one end of the arm-shaped embryo external clamping module close to the first gap is recessed outward and has a first notch extending to the first gap, and the circumferential wall of the first notch is used to fix the first thickened portion located on the outer circumferential wall of the arm-shaped embryo.
[0020] In the above technical scheme, the outer peripheral wall of the arm-shaped embryo is usually provided with a first thickened portion at one end close to the welding point. Based on this structural feature, the inner peripheral wall of the outer clamp module of the arm-shaped embryo is recessed outward in the corresponding area and is provided with a first notch extending to the first gap. The first thickened portion is supported and fixed by the peripheral wall of the first notch, so that the end of the arm-shaped embryo close to the welding point is not easily deformed during welding, thereby being able to prepare a higher quality bionic mold.
[0021] In some optional embodiments, the inner circumferential wall of one end of the palm-shaped embryo outer clamp module close to the first gap is recessed outward and has a second notch extending to the first gap, and the circumferential wall of the second notch is used to fix the second thickened portion located on the outer circumferential wall of the palm-shaped embryo.
[0022] In the above technical solution, the outer peripheral wall of the palm-shaped embryo is usually provided with a second thickened portion at one end close to the welding point. Based on this structural feature, the inner peripheral wall of the palm-shaped embryo outer clamp module in the corresponding area is recessed outward and provided with a second notch extending to the first gap. The second thickened portion is supported and fixed by the peripheral wall of the second notch, so that the end of the palm-shaped embryo close to the welding point is not easily deformed during welding, thereby being able to prepare a higher quality bionic mold.
[0023] In the second aspect, an embodiment of the present application provides a rotary friction welding tooling, including the rotary friction welding fixture provided by the embodiment of the first aspect, wherein one end of the arm-shaped embryo body clamping module away from the palm-shaped embryo body clamping module is transmission-connected to the power output end of the rotary drive unit, and the palm-shaped embryo body clamping module is embedded in the fixed seat.
[0024] In the above technical scheme, the rotary friction welding tooling includes the rotary friction welding fixture provided by the first aspect embodiment, so that the welding tooling can be suitable for the preparation of palm-shaped bionic molds; specifically, one end of the arm-shaped embryo body clamping module away from the palm-shaped embryo body clamping module is transmission-connected to the power output end of the rotary drive unit to provide power for rotary friction welding; the palm-shaped embryo body clamping module is embedded in the fixed seat, so that the arm-shaped embryo and the palm-shaped embryo can rotate relative to each other and generate heat, so that a high-quality palm-shaped bionic mold can be prepared by rotary friction welding. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
[0026] Figure 1 A schematic diagram of the structure of a rotary friction welding fixture provided in an embodiment of the present application;
[0027] Figure 2 for Figure 1 Schematic cross-sectional view of ;
[0028] Figure 3 A schematic diagram of the structure of an inner mold at a welding point provided in an embodiment of the present application;
[0029] Figure 4 for Figure 2 A partial enlarged view of the middle A;
[0030] Figure 5 This is a cross-sectional schematic diagram of the arm-shaped embryo and the palm-shaped embryo provided in the embodiment of the present application after being assembled in a rotary friction welding fixture.
[0031] Icons: 10-rotational friction welding fixture; 100-external mold; 110-arm-shaped embryo body outer clamping module; 111-first clamping section; 112-first notch; 120-palm-shaped embryo body outer clamping module; 121-second clamping section; 122-second notch; 130-first gap; 200-inner mold; 210-arm-shaped embryo body inner clamping module; 211-third clamping section; 220-palm-shaped embryo body inner clamping module; 230-first groove; 240-limiting protrusion; 20-arm-shaped embryo body; 30-palm-shaped embryo body. DETAILED DESCRIPTION
[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.
[0033] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.
[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0035] In the description of this application, it should be noted that the terms "upper", "lower", "inner", "outer", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the application is usually placed when in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0036] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0037] A rotary friction welding fixture and a welding tool of the present application are described in detail below.
[0038] See also Figure 1 and Figure 2In a first aspect, an embodiment of the present application provides a rotary friction welding fixture 10 for performing rotary friction welding on an arm-shaped embryo and a palm-shaped embryo to form a bionic model. The rotary friction welding fixture 10 includes an outer mold 100 and an inner mold 200 . The outer mold 100 includes an arm-shaped embryo external clamping module 110 and a palm-shaped embryo external clamping module 120 which are arranged in sequence. The arm-shaped embryo external clamping module 110 is used to fix the arm-shaped embryo body, and the palm-shaped embryo external clamping module 120 is used to fix the palm-shaped embryo body. There is a first gap 130 between the arm-shaped embryo external clamping module 110 and the palm-shaped embryo external clamping module 120 corresponding to the welding point between the arm-shaped embryo body and the palm-shaped embryo body; the inner mold 200 has a connected arm-shaped embryo internal clamping module 210 and a palm-shaped embryo internal clamping module 220. The arm-shaped embryo internal clamping module 210 is used to be arranged in the arm-shaped embryo body to clamp the arm-shaped embryo together with the arm-shaped embryo external clamping module 110, and the palm-shaped embryo internal clamping module 220 is used to be arranged in the palm-shaped embryo body to clamp the palm-shaped embryo together with the palm-shaped embryo external clamping module 120; the inner mold 200 is configured to be rotatable to enable rotational friction welding at the connection between the arm-shaped embryo body and the palm-shaped embryo body.
[0039] In the present application, the rotary friction welding fixture 10 includes an outer mold 100 and an inner mold 200. Specifically, the arm-shaped embryo outer clamping module 110 in the outer mold 100 is used to fit the outer wall of the arm-shaped embryo body, and the palm-shaped embryo outer clamping module 120 in the outer mold 100 is used to fit the outer wall of the palm-shaped embryo body, and there is a first gap 130 for discharge corresponding to the welding point between the arm-shaped embryo body and the palm-shaped embryo body; the arm-shaped embryo body inner clamping module 210 in the inner mold 200 is used to fit the inner wall of the arm-shaped embryo body and play a role in supporting the arm-shaped embryo body, and the palm-shaped embryo body inner clamping module 220 in the inner mold 200 is used to fit the inner wall of the palm-shaped embryo body and play a role in supporting the palm-shaped embryo body, and the inner mold 200 can rotate so that the connection between the arm-shaped embryo body and the palm-shaped embryo body can rotate relative to each other to generate heat and achieve welding. Through the joint action of the arm-shaped embryo external clamping module 110 and the arm-shaped embryo internal clamping module 210, the arm-shaped embryo with a special shape and a thin wall thickness can be effectively clamped and fixed. Through the joint action of the palm-shaped embryo external clamping module 120 and the palm-shaped embryo internal clamping module 220, the palm-shaped embryo with a special shape and a thin wall thickness can be effectively clamped and fixed. That is, the combination of the outer mold 100 and the inner mold 200 of the specific structure can effectively clamp and fix the two major constituent embryos of the palm-shaped bionic mold. In other words, the rotary friction welding fixture 10 of the specific structure provided in the embodiment of the present application can be applied to the palm-shaped bionic mold, so that the rotary friction welding process can be used to prepare the palm-shaped bionic mold. In addition, it can also be applied to the rotary friction welding of other ultra-thin parts with perfect circular welding ports.
[0040] See also Figure 2 As an example, the arm-shaped embryo body clamping module 210 and the palm-shaped embryo body clamping module 220 in the inner mold 200 are integrally formed.
[0041] In this embodiment, the arm-shaped embryo body clamping module 210 and the palm-shaped embryo body clamping module 220 are integrally formed, which has the advantage of being easy to carry out industrial manufacturing.
[0042] See also Figure 2 As an example, a limiting protrusion 240 is provided on the outer peripheral wall of one end of the arm-shaped embryo body clamping module 210 away from the palm-shaped embryo body clamping module 220, and the end of the limiting protrusion 240 close to the palm-shaped embryo body clamping module 220 is used to abut against the corresponding end face of the limiting part protruding from the inner peripheral wall of the arm-shaped embryo.
[0043] In this embodiment, the outer peripheral wall of one end of the arm-shaped embryo body clamping module 210 away from the palm-shaped embryo body clamping module 220 is provided with a limiting protrusion 240 for abutting against the limiting part protruding in the arm-shaped embryo body, which can improve the fixing stability of the arm-shaped embryo body.
[0044] It should be noted that in the early stage when the arm-shaped embryo rotates and the palm-shaped embryo rubs and generates heat, the heat generation is unstable, which easily leads to uneven heating of the aluminum material and ineffective melting. If welding is achieved through this part of the aluminum material with poor melting effect, it is easy to cause poor welding (such as cold welding, pores, etc.). Based on this, the structure of the inner clamp module in this area can be optimized.
[0045] See also Figure 3 As an example, a first groove 230 is provided at a position corresponding to a welding point in a connection between the arm-shaped embryo body clamping module 210 and the palm-shaped embryo body clamping module 220 , and the first groove 230 is recessed in a direction away from the outer mold 100 .
[0046] In this embodiment, a first groove 230 recessed in a direction away from the outer mold 100 is provided at the connection between the arm-shaped embryo body clamping module 210 and the palm-shaped embryo body clamping module 220 at the position corresponding to the welding position, so as to provide a material removal space for the aluminum material during the process of friction, heat melting and extrusion of the two embryos towards each other, so that the aluminum material that has not been completely melted together at the inner walls of the two embryos is accumulated in the first groove 230 after extrusion (this part of the aluminum material will be removed in the subsequent process and will not remain on the product), thereby improving the problem of poor welding at the inner walls of the two embryos, so as to prepare a palm-shaped bionic mold with better quality.
[0047] As an example, the depression depth of the first groove 230 is not greater than 1 mm, for example but not limited to, the depression depth is any one of 0.05 mm, 0.1 mm, 0.15 mm and 1 mm, or a range of values between any two of them.
[0048] In this embodiment, the upper limit of the depression depth of the first groove 230 is limited within a specific range so that the amount of aluminum material accumulated there is more appropriate, which can improve the problem of inconvenience in demolding due to excessive accumulation of aluminum material, thereby making it easier to remove the prepared palm-shaped bionic mold from the mold.
[0049] As an example, the size of the first gap 130 is 2-15 mm, for example but not limited to any one of 2 mm, 4 mm, 6 mm, 8 mm, 10 mm, 12 mm and 15 mm or a range between any two of them.
[0050] In this embodiment, the size of the first gap 130 (i.e., the distance between the end faces of the arm-shaped embryo external clamping module 110 and the palm-shaped embryo external clamping module 120) is limited to a specific range, which can provide a suitable size of material removal space for the aluminum material while effectively clamping and fixing the two embryos, thereby improving the problem of easy deformation of the two embryos at the welding point while improving the welding quality.
[0051] As an example, the wrist of the palm-shaped embryo is a cylindrical section (the cylindrical section at the wrist is the structural basis for the embryo to perform rotational friction welding, and the length can be 10 to 20 mm), and the palm-shaped embryo body clamping module 220 extends to the end of the cylindrical section away from the first gap 130.
[0052] In this embodiment, with respect to the cylindrical section structure at the wrist of the palm-shaped embryo, the palm-shaped embryo body clamping module 220 is set to a specific form that can extend to the end of the cylindrical section away from the first gap 130. This setting makes it difficult for the palm-shaped embryo to deform at the welding point and can also make the two embryos have better concentricity at the end close to the welding point after welding is completed.
[0053] It should be noted that since the outer clamp module and the inner clamp module absorb heat, and their respective heat absorption effects are related to their own thickness, and the melting effect of the aluminum blank is closely related to the heat generated at the welding point, therefore, considering the melting effect of the aluminum material, the structure of the outer clamp module and the inner clamp module at this point can be optimized.
[0054] See also Figure 4As an example, a section of the arm-shaped embryo external clamping module 110 close to the first gap 130 is the first clamping section 111, and a section of the palm-shaped embryo external clamping module 120 close to the first gap 130 is the second clamping section 121; a section of the first gap 130 of the arm-shaped embryo internal clamping module 210 is the third clamping section 211, and the third clamping section 211 and the first clamping section 111 are used to jointly clamp a section of the arm-shaped embryo close to the palm-shaped embryo, and the second clamping section 121 and the palm-shaped embryo internal clamping module 220 are used to jointly clamp a section of the palm-shaped embryo close to the arm embryo; the interior of the palm-shaped embryo internal clamping module 220 is a hollow structure, and the hollow structure extends into the third clamping section 211, the thickness of the palm-shaped embryo internal clamping module 220 is consistent with the thickness of the second clamping section 121, and the thickness of the third clamping section 211 is consistent with the thickness of the first clamping section 111.
[0055] In this embodiment, the thickness of the palm-shaped embryo inner clamping module 220 and the thickness of the second clamping section 121 of the palm-shaped embryo outer clamping module 120, and the thickness of the third clamping section 211 of the arm-shaped embryo inner clamping module 210 and the thickness of the first clamping section 111 of the arm-shaped embryo outer clamping module 110 are respectively set to the same form, that is, the thicknesses of the two inner and outer clamp modules near the first gap 130 are respectively set to the same form, so that the heat absorption effects of the inner and outer clamp modules in the corresponding areas are basically the same, which helps to achieve better melting effect of the two embryos at the ends near the welding point, and thus helps to improve the welding effect.
[0056] As an example, the thickness of the first clamping segment 111 and / or the thickness of the second clamping segment 121 is 1 to 20 mm, for example but not limited to any point value among 2 mm, 4 mm, 6 mm, 8 mm, 10 mm, 12 mm, 14 mm, 16 mm, 18 mm and 20 mm, or a range value between any two of the thicknesses.
[0057] In this embodiment, the thickness of the inner and outer clamp modules near the welding point is limited to a specific range, which can effectively clamp and fix the two embryos while allowing the clamp modules themselves to have a more suitable heat absorption capacity, thereby improving the problem of easy deformation of the two embryos at the welding point while also improving the welding quality.
[0058] It should be noted that the relative thickness of the first clamping section 111 and the second clamping section 121 is not limited and can be adjusted according to actual needs. For example, the thickness of the first clamping section 111 can be equal to the thickness of the second clamping section 121, or the thickness of the first clamping section 111 can be greater than the thickness of the second clamping section 121, or the thickness of the first clamping section 111 can be less than the thickness of the second clamping section 121.
[0059] See also Figure 4As an example, the inner circumferential wall of one end of the arm-shaped embryo external clamp module 110 close to the first gap 130 is recessed outward and is provided with a first notch 112 extending to the first gap 130, and the surrounding wall of the first notch 112 is used to fix the first thickened portion located on the outer circumferential wall of the arm-shaped embryo.
[0060] In this embodiment, the outer peripheral wall of the arm-shaped embryo is usually provided with a first thickened portion at one end near the welding point. Based on this structural feature, the inner peripheral wall of the arm-shaped embryo external clamp module 110 in the corresponding area is recessed outward and provided with a first notch 112 extending to the first gap 130. The first thickened portion is supported and fixed by the peripheral wall of the first notch 112, so that the end of the arm-shaped embryo near the welding point is not easily deformed during welding, thereby being able to prepare a higher quality bionic mold.
[0061] See also Figure 4 As an example, the inner circumferential wall of one end of the palm-shaped embryo external clamping module 120 close to the first gap 130 is recessed outward and is provided with a second notch 122 extending to the first gap 130, and the circumferential wall of the second notch 122 is used to fix the second thickened portion located on the outer circumferential wall of the palm-shaped embryo.
[0062] In this embodiment, the outer peripheral wall of the palm-shaped embryo is usually provided with a second thickened portion at one end near the welding point. Based on this structural feature, the inner peripheral wall of the palm-shaped embryo external clamping module 120 in the corresponding area is recessed outward and provided with a second notch 122 extending to the first gap 130. The second thickened portion is supported and fixed by the peripheral wall of the second notch 122, so that the end of the palm-shaped embryo near the welding point is not easily deformed during welding, thereby being able to prepare a higher quality bionic mold.
[0063] It should be noted that the form of the arm-shaped embryo external clamping module 110 is not limited and can be set according to the conventional choices in the field. For example, the arm-shaped embryo external clamping module 110 can be 2 to 10 small clamping blocks combined into a circular, prismatic or square form, or it can be a combination of two automatic chucks (the automatic chuck form can be automatically controlled by an electric, pneumatic or hydraulic power unit to cooperate from the up and down or left and right directions, which is more convenient for loading and unloading products); and the specific size is not limited, and it shall be based on the ability to match the arm-shaped embryo internal clamping module 210. For example, its length can be 10 to 400 mm, and the maximum outer diameter of the external clamping mold with a circular or prismatic appearance after combination can be 100 to 500 mm.
[0064] It should be noted that the form of the palm-shaped embryo external clamping module 120 is not limited, and can be set according to the conventional selection in the field. For example, the palm-shaped embryo external clamping module 120 is formed by splicing two relatively distributed upper modules and lower modules. The length of a single module can be 10 to 500 mm, the width can be 10 to 300 mm, and the thickness can be 10 to 200 mm. It should be noted that the structural or functional units not specifically described or limited in the rotary friction welding fixture 10 can be set according to the conventional selection in the field.
[0065] In order to better understand the technical solution, the schematic diagram of the arm-shaped embryo and the palm-shaped embryo after being assembled in the rotary friction welding fixture 10 is used for auxiliary explanation. Figure 5 , wherein the arm-shaped embryo 20 is clamped and fixed between the arm-shaped embryo external clamping module 110 and the arm-shaped embryo internal clamping module 210 , and the palm-shaped embryo 30 is clamped and fixed between the palm-shaped embryo external clamping module 120 and the palm-shaped embryo internal clamping module 220 .
[0066] In the second aspect, an embodiment of the present application provides a rotary friction welding tooling, including the rotary friction welding fixture 10 provided in the embodiment of the first aspect, wherein one end of the arm-shaped embryo body clamping module 210 away from the palm-shaped embryo body clamping module 220 is transmission-connected to the power output end of the rotary drive unit, and the palm-shaped embryo body clamping module 120 is embedded in a fixed seat.
[0067] In the present application, the rotary friction welding tooling includes the rotary friction welding fixture 10 provided in the first aspect embodiment, so that the welding tooling can be suitable for the preparation of palm-shaped bionic molds; specifically, the end of the arm-shaped embryo body clamping module 210 away from the palm-shaped embryo body clamping module 220 is transmission-connected to the power output end of the rotary drive unit to provide power for rotary friction welding; the palm-shaped embryo body clamping module 120 is embedded in the fixed seat, so that the arm-shaped embryo 20 and the palm-shaped embryo 30 can rotate relative to each other and generate heat, so that a high-quality palm-shaped bionic mold can be prepared by rotary friction welding.
[0068] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A rotary friction welding fixture (10), characterized in that: The rotary friction welding fixture (10) is used for performing rotary friction welding on an arm-shaped embryo and a palm-shaped embryo to form a bionic model, and comprises: An outer mold (100), the outer mold (100) comprising an arm-shaped embryo external clamping module (110) and a palm-shaped embryo external clamping module (120) arranged in sequence, the arm-shaped embryo external clamping module (110) being used to fix the arm-shaped embryo, the palm-shaped embryo external clamping module (120) being used to fix the palm-shaped embryo, and a first gap (130) corresponding to a welding position between the arm-shaped embryo external clamping module (110) and the palm-shaped embryo external clamping module (120); An inner mold (200), the inner mold (200) comprising an arm-shaped embryo body clamping module (210) and a palm-shaped embryo body clamping module (220) connected to each other, the arm-shaped embryo body clamping module (210) being used to be arranged in the arm-shaped embryo body to clamp the arm-shaped embryo body together with the arm-shaped embryo body clamping module (110), and the palm-shaped embryo body clamping module (220) being used to be arranged in the palm-shaped embryo body to clamp the palm-shaped embryo body together with the palm-shaped embryo body clamping module (120); The inner mold (200) is configured to be rotatable so as to perform rotational friction welding on the connection between the arm-shaped embryo and the palm-shaped embryo.
2. The rotary friction welding fixture (10) according to claim 1, characterized in that: A first groove (230) is provided at a position corresponding to the welding point in the connection between the arm-shaped embryo body clamping module (210) and the palm-shaped embryo body clamping module (220), and the first groove (230) is recessed in a direction away from the outer mold (100).
3. The rotary friction welding fixture (10) according to claim 2, characterized in that: The depression depth of the first groove (230) is no greater than 1 mm.
4. The rotary friction welding fixture (10) according to claim 1, characterized in that: The size of the first gap (130) is 2 to 15 mm.
5. The rotary friction welding fixture (10) according to claim 1, characterized in that: The wrist of the palm-shaped embryo is a columnar section, and the palm-shaped embryo body clamping module (220) extends to an end of the columnar section away from the first gap (130).
6. The rotary friction welding fixture (10) according to any one of claims 1 to 5, characterized in that: A section of the arm-shaped embryo external clamping module (110) close to the first gap (130) is a first clamping section (111), and a section of the palm-shaped embryo external clamping module (120) close to the first gap (130) is a second clamping section (121); a section of the arm-shaped embryo internal clamping module (210) close to the first gap (130) is a third clamping section (211), and the third clamping section (211) and the first clamping section (111) are used to clamp the arm-shaped embryo close to the palm-shaped embryo. The second clamping section (121) and the palm-shaped embryo body clamping module (220) are used to jointly clamp a section of the palm-shaped embryo body close to the arm-shaped embryo body; the interior of the palm-shaped embryo body clamping module (220) is a hollow structure, and the hollow structure extends into the third clamping section (211); the thickness of the palm-shaped embryo body clamping module (220) is consistent with the thickness of the second clamping section (121), and the thickness of the third clamping section (211) is consistent with the thickness of the first clamping section (111).
7. The rotary friction welding fixture (10) according to claim 6, characterized in that: The thickness of the first clamping section (111) and / or the thickness of the second clamping section (121) is 1 to 20 mm.
8. The rotary friction welding fixture (10) according to any one of claims 1 to 5, characterized in that: The inner peripheral wall of one end of the arm-shaped embryo external clamping module (110) close to the first gap (130) is recessed outward and is provided with a first notch (112) extending to the first gap (130), and the peripheral wall of the first notch (112) is used to fix the first thickened portion located on the outer peripheral wall of the arm-shaped embryo.
9. The rotary friction welding fixture (10) according to claim 8, characterized in that: The inner peripheral wall of one end of the palm-shaped embryo external clamping module (120) close to the first gap (130) is recessed outward and is provided with a second notch (122) extending to the first gap (130), and the peripheral wall of the second notch (122) is used to fix the second thickened portion located on the outer peripheral wall of the palm-shaped embryo.
10. A rotary friction welding tool, characterized in that: It comprises a rotary friction welding fixture (10) as described in any one of claims 1 to 9, wherein one end of the arm-shaped embryo body clamping module (210) away from the palm-shaped embryo body clamping module (220) is transmission-connected to the power output end of the rotary drive unit, and the palm-shaped embryo body clamping module (120) is embedded in a fixed seat.