Rotary friction welding clamp and welding tool
By designing a rotary friction welding fixture suitable for thin-walled irregular parts, the problem of poor welding in the prior art has been solved, and high-quality biomimetic mold preparation has been achieved. It is applicable to rotary friction welding of palm-shaped biomimetic molds and other round ultra-thin parts.
Patent Information
- Application Number
- CN202423108099.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-16
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-12-16
AI Technical Summary
The lack of rotary friction welding fixtures suitable for thin-walled irregular parts in the existing technology leads to defects such as numerous pores, color differences, and oxide impurities in the preparation of palm-shaped bionic molds.
A rotary friction welding fixture is designed, including an outer mold and an inner mold. The outer mold and the inner mold are used to fix the arm-shaped blank and the palm-shaped blank, respectively, and welding is achieved by rotating the inner mold. The inner mold is provided with a groove at the welding point to provide material removal space. The thickness of the outer mold and the inner mold are matched to ensure uniform heating and clamping. The fixture structure is optimized to adapt to the welding requirements of irregular parts.
It improves the welding quality of thin-walled irregular parts, reduces porosity and oxide impurities, enhances welding concentricity and welding effect, and ensures the quality of biomimetic molds.
Smart Images
Figure CN223557494U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of palm-shaped bionic mold manufacturing, in particular to a rotary friction welding fixture and a welding tool. BACKGROUND
[0002] In the prior art, the palm-shaped bionic mold is mainly prepared by friction stir welding, but the palm-shaped bionic mold prepared by the process has defects such as many pores, color difference, and containing a large amount of oxide impurities. Based on this, the inventors found that the preparation of the palm-shaped bionic mold by rotary friction welding can improve the defects such as many pores, color difference, and containing a large amount of oxide impurities of the palm-shaped bionic mold. However, since the products suitable for the traditional rotary friction welding fixture are usually thick pieces (the thickness requirement is usually more than 2 mm) or regular pieces, and the constituent embryo of the palm-shaped bionic mold is usually a special-shaped piece with a thin wall (the wall thickness is usually 0.8-1.0 mm), there is currently no rotary friction welding fixture suitable for the palm-shaped bionic mold. CONTENT OF THE UTILITY MODEL
[0003] The purpose of the present application is to provide a rotary friction welding fixture and a welding tool, which can be suitable for the palm-shaped bionic mold, so that the preparation of the palm-shaped bionic mold can be carried out by rotary friction welding, and in addition, it can also be suitable for the rotary friction welding of other super-salient pieces with a circular welding interface.
[0004] The embodiments of the present application are implemented as follows:
[0005] In a first aspect, the embodiments of the present application provide a rotary friction welding fixture for rotary friction welding of an arm-shaped embryo and a palm-shaped embryo to form a bionic model, the rotary friction welding fixture comprising an outer mold and an inner mold. The outer mold comprises an arm-shaped embryo outer clamping module and a palm-shaped embryo outer clamping module arranged in sequence, the arm-shaped embryo outer clamping module being used for fixing the arm-shaped embryo, the palm-shaped embryo outer clamping module being used for fixing the palm-shaped embryo, and the arm-shaped embryo outer clamping module and the palm-shaped embryo outer clamping module having a first gap corresponding to the welding position of the arm-shaped embryo and the palm-shaped embryo; the inner mold has an arm-shaped embryo inner clamping module and a palm-shaped embryo inner clamping module connected, the arm-shaped embryo inner clamping module being used for being arranged in the arm-shaped embryo to clamp the arm-shaped embryo together with the arm-shaped embryo outer clamping module, and the palm-shaped embryo inner clamping module being used for being arranged in the palm-shaped embryo to clamp the palm-shaped embryo together with the palm-shaped embryo outer clamping module; the inner mold is configured to be rotatable to perform rotary friction welding at the connection position of the arm-shaped embryo and the palm-shaped embryo.
[0006] In the technical solution, the rotary friction welding fixture comprises 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, the palm-shaped embryo outer clamping module in the outer mold is used to fit the outer wall of the palm-shaped embryo, and a first gap for discharging materials is arranged between the two modules corresponding to the welding position of the arm-shaped embryo and the palm-shaped embryo. The arm-shaped embryo inner clamping module in the inner mold is used to fit the inner wall of the arm-shaped embryo and support the arm-shaped embryo. The palm-shaped embryo inner clamping module in the inner mold is used to fit the inner wall of the palm-shaped embryo and support the palm-shaped embryo. The inner mold can rotate to enable the connection position of the arm-shaped embryo and the palm-shaped embryo to generate heat through relative rotation and realize welding. Through the cooperation of the arm-shaped embryo outer clamping module and the arm-shaped embryo inner clamping module, effective clamping and fixing of the arm-shaped embryo with a special shape and a thin wall thickness can be realized. Through the cooperation of the palm-shaped embryo outer clamping module and the palm-shaped embryo inner clamping module, effective clamping and fixing of the palm-shaped embryo with a special shape and a thin wall thickness can be realized. In other words, the specific structure of the outer mold and the inner mold can be combined to effectively clamp and fix the two embryo bodies of the palm-shaped bionic mold. In other words, the specific structure of the rotary friction welding fixture provided in the embodiment of the 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, the rotary friction welding fixture can also be applied to the rotary friction welding of other superalloy components with a circular welding joint.
[0007] In some optional embodiments, a first groove is arranged at the position of the welding position in the connection position of the arm-shaped embryo inner clamping module and the palm-shaped embryo inner clamping module, and the first groove is recessed towards the direction away from the outer mold.
[0008] In the technical solution, the first groove is arranged at the position of the welding position in the connection position of the arm-shaped embryo inner clamping module and the palm-shaped embryo inner clamping module, and the first groove is recessed towards the direction away from the outer mold. The first groove can provide a space for discharging aluminum materials during the process of frictional heat melting and relative extrusion of the two embryo bodies, so that the aluminum materials that cannot be completely melted together at the inner wall of the two embryo bodies can be accumulated in the first groove after extrusion (the part of the aluminum materials will be removed in the subsequent process and will not be left on the product), thereby improving the problem of poor welding at the inner wall of the two embryo bodies, so as to prepare a palm-shaped bionic mold with better quality.
[0009] In some optional embodiments, the recess depth of the first groove is not higher than 1 mm.
[0010] In the technical solution, the upper limit of the recess depth of the first groove is limited in a specific range, so that the amount of aluminum materials accumulated at the position is appropriate, the problem of excessive accumulation of aluminum materials and inconvenient demolding can be improved, and the prepared palm-shaped bionic mold can be taken out from the mold more easily.
[0011] In some optional embodiments, the size of the first gap is 2-15 mm.
[0012] In the technical solution, the size of the first gap, i.e. the distance between the end faces of the arm-shaped embryo outer clamping module and the palm-shaped embryo outer clamping module, is limited in a specific range, which can effectively clamp and fix the two pieces of embryo while providing a suitable size of material removal space for the aluminum material, so as to improve the welding quality while solving the problem of easy deformation of the two pieces of embryo at the welding position.
[0013] In some optional embodiments, the wrist opening of the palm-shaped embryo is a cylindrical segment, and the palm-shaped embryo inner clamping module extends to the end of the cylindrical segment away from the first gap.
[0014] In the technical solution, the palm-shaped embryo inner clamping module is set to a specific form that can extend to the end of the cylindrical segment away from the first gap based on the structure of the palm-shaped embryo, which makes the palm-shaped embryo not easy to deform at the welding position and also makes the two pieces of embryo have good concentricity at the end close to the welding position after the welding is completed.
[0015] In some optional embodiments, the section of the arm-shaped embryo outer clamping module close to the first gap is a first clamping section, and the section of the palm-shaped embryo outer clamping module close to the first gap is a second clamping section; the section of the arm-shaped embryo inner clamping module close to the first gap is a third clamping section, and the third clamping section and the first clamping section are used to clamp a section of the arm-shaped embryo close to the palm-shaped embryo, and the second clamping section and the palm-shaped embryo inner clamping module are used to clamp a section of the palm-shaped embryo close to the arm-shaped embryo; the palm-shaped embryo inner clamping module has a hollow structure extending into the third clamping section, and the thickness of the palm-shaped embryo inner 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 technical solution, the thickness of the palm-shaped embryo inner clamping module, the thickness of the second clamping section of the palm-shaped embryo outer clamping module, 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, i.e. the thickness of the two kinds of inner and outer clamping modules close to the first gap is set to the same form, so that the heat absorption effects of the inner and outer clamping modules in the corresponding regions are basically consistent, which helps to achieve better melting effect of the two pieces of embryo at the end close to the welding position, and further 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 1-20 mm.
[0018] In the technical solution, the thickness of the inner and outer clamp modules near the welding position is limited in a specific range, so that the two embryo bodies can be effectively clamped and fixed, and the clamp modules have appropriate heat absorption, thereby improving the welding quality and solving the problem of deformation of the two embryo bodies at the welding position.
[0019] In some optional embodiments, the inner circumferential wall of the outer clamp module of the arm-shaped embryo body at one end near the first gap is outwardly recessed and provided with a first notch extending to the first gap, and the circumferential wall of the first notch is used for fixing the first thickened part on the outer circumferential wall of the arm-shaped embryo body.
[0020] In the technical solution, the outer circumferential wall of the arm-shaped embryo body at one end near the welding position is usually provided with a first thickened part, based on this structural feature, the inner circumferential wall of the outer clamp module of the arm-shaped embryo body at the corresponding region is outwardly recessed and provided with a first notch extending to the first gap, and the first thickened part is fixed by the circumferential wall of the first notch, so that the one end of the arm-shaped embryo body near the welding position is not easily deformed during welding, thereby obtaining a higher-quality bionic mold.
[0021] In some optional embodiments, the inner circumferential wall of the outer clamp module of the palm-shaped embryo body at one end near the first gap is outwardly recessed and provided with a second notch extending to the first gap, and the circumferential wall of the second notch is used for fixing the second thickened part on the outer circumferential wall of the palm-shaped embryo body.
[0022] In the technical solution, the outer circumferential wall of the palm-shaped embryo body at one end near the welding position is usually provided with a second thickened part, based on this structural feature, the inner circumferential wall of the outer clamp module of the palm-shaped embryo body at the corresponding region is outwardly recessed and provided with a second notch extending to the first gap, and the second thickened part is fixed by the circumferential wall of the second notch, so that the one end of the palm-shaped embryo body near the welding position is not easily deformed during welding, thereby obtaining a higher-quality bionic mold.
[0023] In the second aspect, the embodiments of the present application provide a rotary friction welding tool, which comprises the rotary friction welding clamp provided in the first aspect, the one end of the inner clamp module of the arm-shaped embryo body away from the inner clamp module of the palm-shaped embryo body is in transmission connection with the power output end of the rotary driving unit, and the outer clamp module of the palm-shaped embryo body is embedded in the fixing seat.
[0024] In the technical solution, the rotary friction welding tool comprises the rotary friction welding clamp provided in the first aspect, so that the welding tool can be applied to the preparation of the palm-shaped bionic mold; specifically, the one end of the inner clamp module of the arm-shaped embryo body away from the inner clamp module of the palm-shaped embryo body is in transmission connection with the power output end of the rotary driving unit, so as to provide power for the rotary friction welding; and the outer clamp module of the palm-shaped embryo body is embedded in the fixing seat, so that the arm-shaped embryo body and the palm-shaped embryo body can rotate relatively and generate heat, thereby preparing a high-quality palm-shaped bionic mold through rotary friction welding. Attached Figure Description
[0025] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0026] Figure 1 This is a schematic diagram of the structure of a rotary friction welding fixture provided in an embodiment of this application;
[0027] Figure 2 for Figure 1 A cross-sectional schematic diagram;
[0028] Figure 3 This application provides a schematic diagram of the structure of an inner mold at the welding point, as shown in the embodiment of the present application.
[0029] Figure 4 for Figure 2 A magnified view of a section at point A in the middle;
[0030] Figure 5 This is a cross-sectional schematic diagram of the arm-shaped and palm-shaped preforms provided in the embodiments of this application after assembly in a rotary friction welding fixture.
[0031] Icons: 10-Rotary friction welding fixture; 100-Outer mold; 110-Arm-shaped preform external clamping module; 111-First clamping section; 112-First notch; 120-Palm-shaped preform external clamping module; 121-Second clamping section; 122-Second notch; 130-First gap; 200-Inner mold; 210-Arm-shaped preform internal clamping module; 211-Third clamping section; 220-Palm-shaped preform internal clamping module; 230-First groove; 240-Limiting protrusion; 20-Arm-shaped preform; 30-Palm-shaped preform. Detailed Implementation
[0032] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0033] Therefore, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the application claimed, but merely represents selected embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the application.
[0034] It should be noted that similar reference numbers and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.
[0035] In the description of the application, it should be noted that the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed, and are only for the convenience of describing the application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.
[0036] In the description of the application, it should also be noted that unless otherwise explicitly specified and limited, the terms "provided", "mounted", "connected", "connected" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication between the two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.
[0037] The following specifically describes a rotary friction welding fixture and a welding tool of the application.
[0038] Referring to Figure 1 and Figure 2In the first aspect, the embodiment of the present application provides a rotary friction welding fixture 10 for rotary friction welding of an arm-shaped embryo and a palm-shaped embryo to form a bionic model. The rotary friction welding fixture 10 comprises an outer mold 100 and an inner mold 200. The outer mold 100 comprises an arm-shaped embryo outer clamping module 110 and a palm-shaped embryo outer clamping module 120 arranged in sequence. The arm-shaped embryo outer clamping module 110 is arranged inside the arm-shaped embryo for fixing the arm-shaped embryo. The palm-shaped embryo outer clamping module 120 is arranged inside the palm-shaped embryo for fixing the palm-shaped embryo. The arm-shaped embryo outer clamping module 110 and the palm-shaped embryo outer clamping module 120 have a first gap 130 corresponding to a welding position of the arm-shaped embryo and the palm-shaped embryo. The inner mold 200 has an arm-shaped embryo inner clamping module 210 and a palm-shaped embryo inner clamping module 220 connected. The arm-shaped embryo inner clamping module 210 is arranged inside the arm-shaped embryo to clamp the arm-shaped embryo together with the arm-shaped embryo outer clamping module 110. The palm-shaped embryo inner clamping module 220 is arranged inside the palm-shaped embryo to clamp the palm-shaped embryo together with the palm-shaped embryo outer clamping module 120. The inner mold 200 is configured to rotate to enable rotary friction welding of the connection position of the arm-shaped embryo and the palm-shaped embryo.
[0039] In the present application, the rotary friction welding fixture 10 comprises the outer mold 100 and the 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. 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. The arm-shaped embryo outer clamping module 110 and the palm-shaped embryo outer clamping module 120 have the first gap 130 corresponding to the welding position of the arm-shaped embryo and the palm-shaped embryo for discharging materials. The arm-shaped embryo inner clamping module 210 in the inner mold 200 is used to fit the inner wall of the arm-shaped embryo and serves as a support for the arm-shaped embryo. The palm-shaped embryo inner clamping module 220 in the inner mold 200 is used to fit the inner wall of the palm-shaped embryo and serves as a support for the palm-shaped embryo. The inner mold 200 can rotate to enable relative rotation of the connection position of the arm-shaped embryo and the palm-shaped embryo to generate heat and achieve welding. The arm-shaped embryo outer clamping module 110 and the arm-shaped embryo inner clamping module 210 can work together to effectively clamp and fix the arm-shaped embryo which has a special shape and a thin wall thickness. The palm-shaped embryo outer clamping module 120 and the palm-shaped embryo inner clamping module 220 can work together to effectively clamp and fix the palm-shaped embryo which has a special shape and a thin wall thickness. In other words, the rotary friction welding fixture 10 with the specific structure provided in the embodiment of the present application can be applied to the palm bionic mold, so that the rotary friction welding process can be used for the preparation of the palm bionic mold. In addition, it can also be applied to the rotary friction welding of other superalloy components with a circular welding joint.
[0040] Referring to Figure 2 As an example, the arm-shaped embryo inner clamping module 210 and the palm-shaped embryo inner clamping module 220 in the inner mold 200 are integrally formed.
[0041] In this embodiment, the arm embryo inner clamping module 210 and the palm embryo inner clamping module 220 are integrally formed, which has the advantage of facilitating industrial manufacturing.
[0042] Referring to Figure 2 As an example, a limiting protrusion 240 is arranged on the outer peripheral wall of the end of the arm embryo inner clamping module 210 away from the palm embryo inner clamping module 220, and the end of the limiting protrusion 240 close to the palm embryo inner clamping module 220 is used to abut against the corresponding end face of the limiting part protruding on the inner peripheral wall of the arm embryo.
[0043] In this embodiment, the arm embryo inner clamping module 210 and the palm embryo inner clamping module 220 are integrally formed, which has the advantage of facilitating industrial manufacturing.
[0044] It should be noted that in the initial stage of the arm embryo rotating and the palm embryo rubbing and generating heat, due to the unstable heat generation, the aluminum material is easily unevenly heated and cannot be effectively melted. If the welding is achieved by passing through this part of the aluminum material with poor melting effect, it is easy to cause poor welding (such as virtual welding, gas hole, etc.). Based on this, the structure of the inner clamping module in this area can be optimized.
[0045] Referring to Figure 3 As an example, a first groove 230 is arranged at the position corresponding to the welding position of the connection between the arm embryo inner clamping module 210 and the palm embryo inner clamping module 220, and the first groove 230 is recessed towards the direction away from the outer mold 100.
[0046] In this embodiment, the first groove 230 is arranged at the position corresponding to the welding position of the connection between the arm embryo inner clamping module 210 and the palm embryo inner clamping module 220, and the first groove 230 is recessed towards the direction away from the outer mold 100. In the process of the two embryos rubbing and melting and being pressed towards each other, the first groove 230 can provide a material removal space for the aluminum material, so that the aluminum material that cannot be completely melted together at the inner wall of the two embryos is accumulated in the first groove 230 after being pressed (this part of the aluminum material will be removed in the subsequent process and will not be left on the product), thereby improving the problem of poor welding at the inner wall of the two embryos, so as to prepare a palm-shaped bionic mold with better quality.
[0047] As an example, the recess depth of the first groove 230 is not higher than 1mm, for example but not limited to any one point value or a range value between any two of 0.05mm, 0.1mm, 0.15mm and 1mm.
[0048] In this embodiment, the upper limit of the depth of the first groove 230 is limited to a certain range, so that the amount of aluminum material accumulated at this position is appropriate, which can improve the problem of excessive accumulation of aluminum material and inconvenient demolding, so that the prepared palm-shaped bionic mold can be taken out from the mold more easily.
[0049] As an example, the size of the first gap 130 is 2-15 mm, for example, but not limited to, any one of the values of 2 mm, 4 mm, 6 mm, 8 mm, 10 mm, 12 mm and 15 mm or a range value between any two of them.
[0050] In this embodiment, the size at the first gap 130 (i.e. the distance between the end faces of the arm-shaped embryo outer clamping module 110 and the palm-shaped embryo outer clamping module 120) is limited to a certain range, which can effectively clamp and fix the two embryos while providing an appropriate size of the material removal space for the aluminum material, thereby improving the problem of easy deformation of the two embryos at the welding position while improving the welding quality.
[0051] As an example, the wrist opening of the palm-shaped embryo is a cylindrical segment (the cylindrical segment at the wrist opening is the structural basis for the embryo to perform rotary friction welding, and the length can be 10-20 mm), and the palm-shaped embryo inner clamping module 220 extends to the end of the cylindrical segment away from the first gap 130.
[0052] In this embodiment, for the cylindrical segment structure at the wrist opening of the palm-shaped embryo, the palm-shaped embryo inner clamping module 220 is arranged in a specific form that can extend to the end of the cylindrical segment away from the first gap 130, which makes the palm-shaped embryo not easy to deform at the welding position and also enables the two embryos to have good concentricity at the end close to the welding position after the welding is completed.
[0053] It should be noted that since the outer clamping module and the inner clamping module absorb heat, and the heat absorption effect of each is related to its own thickness, and the melting effect of the aluminum material embryo is closely related to the heat generated at the welding position. Therefore, considering the aluminum melting effect, the structure of the outer clamping module and the inner clamping module at this position can be optimized.
[0054] Referring to Figure 4As an example, the segment of the arm-shaped embryo outer clamping module 110 close to the first gap 130 is the first clamping segment 111, and the segment of the palm-shaped embryo outer clamping module 120 close to the first gap 130 is the second clamping segment 121; the segment of the arm-shaped embryo inner clamping module 210 close to the first gap 130 is the third clamping segment 211, and the third clamping segment 211 and the first clamping segment 111 are used to clamp a segment of the arm-shaped embryo close to the palm-shaped embryo; the second clamping segment 121 and the palm-shaped embryo inner clamping module 220 are used to clamp a segment of the palm-shaped embryo close to the arm-shaped embryo; the palm-shaped embryo inner clamping module 220 is a hollow structure, and the hollow structure extends into the third clamping segment 211; the thickness of the palm-shaped embryo inner clamping module 220 is consistent with the thickness of the second clamping segment 121, and the thickness of the third clamping segment 211 is consistent with the thickness of the first clamping segment 111.
[0055] In this embodiment, the thickness of the palm-shaped embryo inner clamping module 220, the thickness of the second clamping segment 121 of the palm-shaped embryo outer clamping module 120, the thickness of the third clamping segment 211 of the arm-shaped embryo inner clamping module 210, and the thickness of the first clamping segment 111 of the arm-shaped embryo outer clamping module 110 are respectively set in the same form, that is, the thickness of the two kinds of inner and outer clamping module close to the first gap 130 is respectively set in the same form, so that the heat absorption effect of the inner and outer clamping modules in the corresponding area is basically consistent, which helps to achieve better melting effect at the end of the two embryos close to the welding position, thereby helping 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 1-20 mm, for example but not limited to any one of 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 them.
[0057] In this embodiment, the thickness of the inner and outer clamping modules close to the welding position is limited in a certain range, which can effectively clamp and fix the two embryos while making the clamping module itself have a more appropriate heat absorption amount, so as to improve the problem that the two embryos are easily deformed at the welding position while improving the welding quality.
[0058] It should be noted that the relative thickness of the first clamping segment 111 and the second clamping segment 121 is not limited, and can be adjusted according to actual needs, for example, the thickness of the first clamping segment 111 can be equal to the thickness of the second clamping segment 121, the thickness of the first clamping segment 111 can be greater than the thickness of the second clamping segment 121, or the thickness of the first clamping segment 111 can be less than the thickness of the second clamping segment 121.
[0059] Reference is made to Figure 4As an example, the inner circumferential wall of the arm-shaped embryo outer clamping module 110 at the end close to the first gap 130 is outwardly recessed and provided with a first notch 112 extending to the first gap 130, and the circumferential wall of the first notch 112 is used to fix the first thickened portion on the outer circumferential wall of the arm-shaped embryo.
[0060] In this embodiment, the outer circumferential wall of the arm-shaped embryo at the end close to the welding portion is generally provided with a first thickened portion, and based on this structural feature, the inner circumferential wall of the arm-shaped embryo outer clamping module 110 at the corresponding region is outwardly recessed and provided with a first notch 112 extending to the first gap 130, and the circumferential wall of the first notch 112 is used to hold and fix the first thickened portion, so that the end of the arm-shaped embryo close to the welding portion is not easy to deform during welding, thereby enabling the preparation of a higher-quality bionic mold.
[0061] Referring to Figure 4 As an example, the inner circumferential wall of the palm-shaped embryo outer clamping module 120 at the end close to the first gap 130 is outwardly recessed and 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 on the outer circumferential wall of the palm-shaped embryo.
[0062] In this embodiment, the outer circumferential wall of the palm-shaped embryo at the end close to the welding portion is generally provided with a second thickened portion, and based on this structural feature, the inner circumferential wall of the palm-shaped embryo outer clamping module 120 at the corresponding region is outwardly recessed and provided with a second notch 122 extending to the first gap 130, and the circumferential wall of the second notch 122 is used to hold and fix the second thickened portion, so that the end of the palm-shaped embryo close to the welding portion is not easy to deform during welding, thereby enabling the preparation of a higher-quality bionic mold.
[0063] It should be noted that the form of the arm-shaped embryo outer clamping module 110 is not limited, and can be set according to conventional selection in the art, for example, the arm-shaped embryo outer clamping module 110 can be 2-10 small clamping blocks combined into a circular, prismatic or square form, or can be a form of two automatic chuck combinations (the form of the automatic chuck can be automatically controlled from the up-down or left-right direction by a power unit such as an electric or pneumatic or hydraulic power unit, which is more convenient for loading and unloading products); and the specific size is not limited, and is specifically matched with the arm-shaped embryo inner clamping module 210, for example, the length can be 10-400 mm, and the maximum outer diameter size of the combined outer clamping with a circular or prismatic appearance can be 100-500 mm.
[0064] It should be noted that the form of the palm embryo outer clamping module 120 is not limited, and can be set according to conventional selection in the art, for example, the palm embryo outer clamping module 120 is formed by splicing two oppositely distributed upper modules and lower modules, the length of a single module can be 10-500 mm, the width can be 10-300 mm, and the thickness can be 10-200 mm. It should be noted that the structure or functional unit not specially mentioned or limited in the rotary friction welding clamp 10 can be set according to conventional selection in the art.
[0065] In order to better understand the technical solutions, the schematic diagram of the arm embryo and the palm embryo after being assembled in the rotary friction welding clamp 10 is used for auxiliary description, and details can be referred to Figure 5 , wherein the arm embryo 20 is clamped and fixed between the arm embryo outer clamping module 110 and the arm embryo inner clamping module 210, and the palm embryo 30 is clamped and fixed between the palm embryo outer clamping module 120 and the palm embryo inner clamping module 220.
[0066] In a second aspect, the embodiment of the present application provides a rotary friction welding tool, which comprises the rotary friction welding clamp 10 provided in the first aspect, the end of the arm embryo inner clamping module 210 away from the palm embryo inner clamping module 220 is in transmission connection with the power output end of the rotary driving unit, and the palm embryo outer clamping module 120 is embedded in the fixed seat.
[0067] In the present application, the rotary friction welding tool comprises the rotary friction welding clamp 10 provided in the first aspect, so that the welding tool can be suitable for the preparation of a palm-shaped bionic mold; specifically, the end of the arm embryo inner clamping module 210 away from the palm embryo inner clamping module 220 is in transmission connection with the power output end of the rotary driving unit, so as to provide power for rotary friction welding; the palm embryo outer clamping module 120 is embedded in the fixed seat, so that the arm embryo 20 and the palm embryo 30 can rotate relatively and generate heat, and then a high-quality palm-shaped bionic mold can be prepared by rotary friction welding.
[0068] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. 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 to perform rotary friction welding of arm-shaped and palm-shaped preforms to form a biomimetic model, and includes: An outer mold (100) includes an arm-shaped embryo external clamping module (110) and a palm-shaped embryo external clamping module (120) arranged sequentially. The arm-shaped embryo external clamping module (110) is used to fix the arm-shaped embryo, and the palm-shaped embryo external clamping module (120) is used to fix the palm-shaped embryo. A first gap (130) is formed between the arm-shaped embryo external clamping module (110) and the palm-shaped embryo external clamping module (120) corresponding to the welding joint of the arm-shaped embryo and the palm-shaped embryo. An inner mold (200) has a connected arm-shaped embryo body clamping module (210) and a palm-shaped embryo body clamping module (220). The arm-shaped embryo body clamping module (210) is disposed inside the arm-shaped embryo body to clamp the arm-shaped embryo body together with the arm-shaped embryo body clamping module (110). The palm-shaped embryo body clamping module (220) is disposed inside 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 that the connection between the arm-shaped preform and the palm-shaped preform can be subjected to rotational friction welding.
2. The rotary friction welding fixture (10) according to claim 1, characterized in that, A first groove (230) is provided at the connection between the arm-shaped preform internal clamping module (210) and the palm-shaped preform internal clamping module (220) at the position corresponding to the welding point. 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 depth of the first groove (230) is no more 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 palmar embryo has a cylindrical segment at the wrist opening, and the internal clamping module (220) of the palmar embryo extends to the end of the cylindrical segment 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, The section of the arm-shaped embryo external clamping module (110) near the first gap (130) is the first clamping section (111), and the section of the palmate embryo external clamping module (120) near the first gap (130) is the second clamping section (121); the section of the arm-shaped embryo internal clamping module (210) near the first gap (130) is the third clamping section (211), and the third clamping section (211) and the first clamping section (111) are used together to clamp the arm-shaped embryo near the palmate embryo. The second clamping section (121) and the palmate embryonic body clamping module (220) are used to clamp the palmate embryonic body near the arm-shaped embryonic body; the palmate embryonic body clamping module (220) has a hollow structure inside, and the hollow structure extends into the third clamping section (211); the thickness of the palmate embryonic body clamping module (220) is the same as the thickness of the second clamping section (121), and the thickness of the third clamping section (211) is the same as 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 the arm-shaped embryo external clamping module (110) near the first gap (130) is recessed outward and provided with a first notch (112) extending to the first gap (130). The peripheral wall of the first notch (112) is used to fix the first thickened part 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 the palmate embryo external clamping module (120) near the first gap (130) is recessed outward and provided with a second notch (122) extending to the first gap (130). The peripheral wall of the second notch (122) is used to fix the second thickened part located on the outer peripheral wall of the palmate embryo.
10. A rotary friction welding fixture, characterized in that, The rotary friction welding fixture (10) as described in any one of claims 1 to 9 is provided, wherein the end of the arm-shaped preform internal clamping module (210) away from the palm-shaped preform internal clamping module (220) is connected to the power output end of the rotary drive unit, and the palm-shaped preform external clamping module (120) is embedded in the fixed base.