Automatic alignment high-speed rotating friction welding equipment and method

Abstract

The invention belongs to the technical field of welding equipment, and discloses automatic-alignment high-speed rotating friction welding equipment and method, and the automatic-alignment high-speed rotating friction welding equipment comprises a rotating jig which can carry a rotating workpiece clamped on the rotating jig to be driven in a rotating manner; the moving jig can carry a moving workpiece clamped on the moving jig to be driven in a mode of moving in the axial direction of the rotating workpiece; the grinding jig is arranged between the rotating jig and the grinding jig and comprises a grinding ring sleeve, a moving driving mechanism and a rotating driving mechanism; a grinding inner cavity matched with the joint position of the rotary workpiece and the movable workpiece is formed in the grinding ring sleeve; the movable driving mechanism is used for driving the grinding ring sleeve to move in a radial extension plane where the joint position is located, so that the grinding ring sleeve can eccentrically rotate around the joint position under the condition that the cavity wall of the grinding inner cavity is kept to abut against the surface wall of the outer edge of the joint position; and the rotary driving mechanism is used for driving the polishing ring sleeve to rotate.

Description

Technical Field

[0001] This invention belongs to the field of welding equipment technology, specifically relating to an automatic alignment high-speed rotary friction welding device and method. Background Technology

[0002] Friction welding is a solid-state welding technology that uses the frictional heat generated by a high-speed rotating workpiece or tool to bring the surfaces to be welded to a plastic state. Then, under pressure, atomic bonding is achieved to form a strong weld joint. In this process, the material does not go through a melting stage, thus avoiding metallurgical defects that may be caused by traditional fusion welding, such as porosity and slag inclusions. It is particularly suitable for welding materials with high melting points, easy oxidation, or heat sensitivity.

[0003] Currently, when using traditional friction welding machines to perform friction welding on product surfaces, the welding parts are usually fixed on a fixture, then brought close to the product surface. The fixture then drives the welding parts to rotate at high speed, causing the contact surfaces between the welding parts and the product to reach a plastic state through frictional heat generation. Subsequently, under pressure, the welding parts are fixed to the product. However, during the high-speed rotation and extrusion process, flash can easily occur at the joint between the welding parts and the product, affecting the welding quality. Summary of the Invention

[0004] In view of this, in order to solve the problems mentioned in the background art, the purpose of the present invention is to provide an automatic alignment high-speed rotary friction welding device and method.

[0005] To achieve the above objectives, the present invention provides the following technical solution: An automatic alignment high-speed rotary friction welding device includes: A rotary fixture is capable of carrying a rotating workpiece clamped on it and being driven in a rotating manner. A movable fixture is disposed opposite to the rotary fixture and is driven to carry a movable workpiece clamped thereon in a manner that allows it to move along the axial direction of the rotary workpiece. A grinding fixture, disposed between the rotating fixture and the grinding fixture, includes a grinding ring, a moving drive mechanism, and a rotating drive mechanism. The grinding ring has an internal grinding cavity adapted to the joint position of the rotating and moving workpieces. The moving drive mechanism drives the grinding ring to move within a radially extending plane at the joint position, allowing the grinding ring to rotate eccentrically around the joint position while maintaining the cavity wall abutting against the outer edge of the joint position. The rotating drive mechanism drives the grinding ring to rotate, enabling the grinding ring to circumferentially grind the joint position through the mutual misalignment of the cavity wall and the outer edge of the joint position.

[0006] Preferably, the rotary fixture and the movable fixture are connected by guide posts to guide the movable fixture and the movable workpiece clamped on it to move along the axial direction of the rotary workpiece.

[0007] Preferably, both the rotary fixture and the movable fixture include: An installation template is provided, on which a clamp is mounted. The clamp includes a base and a plurality of clamping arms that are circumferentially and uniformly connected to the base. The clamping arms extend axially along the base and form a clamping space between the plurality of clamping arms. A limiting template is provided opposite to the installation template, and a limiting sleeve is installed on it and fitted around the outer periphery of the clamp. A limiting mechanism connects the mounting template and the limiting template, and drives the limiting template to move relative to the mounting template along the axial direction of the clamp. Wherein, a limiting inclined surface is provided on the clamping arm and / or the limiting sleeve; when the limiting template moves away from the mounting template, it guides the limiting sleeve to move inward on the fixture to retract the plurality of clamping arms; when the limiting template moves closer to the mounting template, it guides the limiting sleeve to move outward on the fixture to release the plurality of clamping arms.

[0008] Preferably, the limiting mechanism includes a slide and a slide block that are slidably assembled via an inclined rail. The slide is mounted on the mounting template via a slide rail extending radially along the clamp. The mounting template is also provided with a driving component that drives the slide to move along the slide rail. The slide block is fixedly mounted on the limiting template by connecting bolts.

[0009] Preferably, the mounting template of the rotary fixture is fixedly mounted by a first bracket, and the first bracket is provided with a rotary power component for driving the clamp of the rotary fixture to rotate.

[0010] Preferably, the movable fixture further includes a fixed template, the limiting template and the fixed template are distributed on both sides of the mounting template, the fixed template is fixedly installed with a second bracket, and the second bracket is provided with a moving power component that is fixedly connected to the mounting template and used to drive the movable fixture to move.

[0011] Preferably, the moving drive mechanism includes a first moving member and a second moving member. The first moving member drives the grinding ring to move horizontally within the radially extending plane where the joint is located, and the second moving member drives the grinding ring to move vertically within the radially extending plane where the joint is located.

[0012] Preferably, the moving drive mechanism further includes a third moving component, which drives the grinding ring sleeve to move axially.

[0013] Preferably, the rotary drive mechanism includes: The turbine is fitted and fixed to the outer circumference of the grinding ring. The worm gear is meshed with the lower side of the turbine; A drive motor is mounted on the lower side of the worm gear and is connected to the worm gear transmission via a gear transmission assembly.

[0014] The present invention also provides a friction welding method performed by the automatically aligned high-speed rotary friction welding equipment as described above, comprising: S1. The grinding ring is driven to deviate from the workpiece mounting space between the rotating fixture and the moving fixture by the moving drive mechanism; S2. Clamp the rotating workpiece on the rotating fixture, and clamp the moving workpiece on the moving fixture; S3. The grinding ring sleeve is moved into the workpiece mounting space between the rotating fixture and the moving fixture by the moving drive mechanism, and the central axis of the rotating workpiece, the moving workpiece and the grinding ring sleeve are on the same straight line. S4. Drive the movable fixture to move along the axis of the rotating workpiece along the axis of the movable workpiece, so as to complete the docking of the rotating workpiece and the movable workpiece inside the grinding ring sleeve. S5. Drive the rotary fixture to rotate, carrying the rotating workpiece clamped thereon, so as to perform friction welding between the rotating workpiece and the moving workpiece. S6. After welding is completed, the grinding ring is moved to an eccentric abutment with the joint position of the rotating workpiece and the moving workpiece by the moving drive mechanism, that is, the inner wall of the grinding cavity abuts against the outer edge surface wall of the joint position. At the same time, the grinding ring is driven to rotate by the rotating drive mechanism to perform grinding of the outer edge surface wall of the joint position by the grinding ring. During the polishing process, the moving drive mechanism and the rotating drive mechanism are continuously driven so that the polishing ring can rotate eccentrically around the joint position while maintaining the inner wall of the polishing cavity against the outer edge surface of the joint position, thereby completing the full polishing of the outer circumference of the joint position by the polishing ring.

[0015] Compared with the prior art, the present invention has the following advantages: (1) The present invention provides an automatic alignment high-speed rotary friction welding equipment and method. By adding a grinding fixture that cooperates with the rotating fixture and the moving fixture, the automatic grinding of the weld seam after the workpiece is aligned and welded is realized, thereby effectively improving the welding processing efficiency and welding quality.

[0016] (2) In this invention, the grinding fixture includes a grinding ring and a moving drive mechanism and a rotating drive mechanism for driving the grinding ring to move and rotate. This enables the reasonable installation and driving of the grinding ring without affecting the installation and alignment welding of the workpiece. It also has the advantages of simple structure and stable drive, which can effectively improve the grinding quality.

[0017] (3) In this invention, the rotary drive mechanism adopts a drive structure with worm gear and a transmission structure with gear set, thereby effectively reducing the axial space occupied by the rotary drive mechanism, so that the overall grinding fixture can be flexibly adapted and installed between the rotary fixture and the moving fixture with smaller space.

[0018] (4) In this invention, both the rotating fixture and the moving fixture adopt a clamping structure with a clamp and a limiting sleeve. The clamp is installed on the mounting template and the limiting sleeve is installed on the limiting template. A limiting mechanism that can drive the limiting template to move axially is set between the mounting template and the limiting template. In this way, while ensuring that the fixture has a stable clamping effect on the workpiece, the integrated installation of the overall fixture structure is realized. It has the advantages of stable structure, small space occupation and high integration. Attached Figure Description

[0019] Figure 1 This is one of the structural schematic diagrams of the present invention; Figure 2 This is the second structural schematic diagram of the present invention; Figure 3 This is an exploded view of the structure of the rotating fixture, guide column, and moving fixture in this invention. Figure 4 This is an exploded view of the rotating fixture in this invention; Figure 5 This is an exploded view of the structure of the movable fixture in this invention; Figure 6 This is a schematic diagram of the limiting mechanism in this invention; Figure 7 This is an exploded view of the structure of the clamp and the limiting sleeve in this invention; Figure 8 This is a schematic diagram of the grinding fixture in this invention; Figure 9 This is a schematic diagram of the internal structure of the rotary drive mechanism in this invention; Figure 10 This is a schematic diagram illustrating the motion principle of the grinding ring sleeve grinding the workpiece joint position under the combined drive of the moving drive mechanism and the rotating drive mechanism in this invention. In the picture: Rotary jig - 10; Rotary power component - 101; Moving jig - 20; Fixed template - 201; Moving power component - 202; Grinding jig - 30; Grinding ring - 301; Moving drive mechanism - 302; First moving component - 3021; ​​Second moving component - 3022; Third moving component - 3023; Rotary drive mechanism - 303; Turbine - 3031; Worm gear - 3032; Drive motor - 3033; Gear transmission set - 3034; Guide column - 40; Installation template-1; clamp-11; base-111; clamp arm-112; limiting template-2; limiting sleeve-21; limiting mechanism-3; inclined rail-31; slide-32; slide base-33; slide rail-34; driving component-35; limiting inclined surface-4. Detailed Implementation

[0020] To further understand the content of this invention, a detailed description of the invention is provided in conjunction with the accompanying drawings and embodiments. The structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art, and are not intended to limit the implementation conditions of the invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effects and objectives of the invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity and not intended to limit the scope of implementation. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention. It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein.

[0021] like Figure 1 and Figure 2 As shown, the automatic alignment high-speed rotary friction welding equipment provided by the present invention includes a machine body and a rotating fixture 10, a movable fixture 20, and a grinding fixture 30 installed in the machine body. The rotating fixture 10 and the movable fixture 20 are arranged opposite each other on the operating table of the machine body. The grinding fixture 30 is disposed between the rotating fixture 10 and the grinding fixture 30, and a through hole is provided on the operating table to accommodate the grinding fixture 30, thereby allowing the grinding fixture 30 to be stored below the operating table through the through hole, thus preventing the grinding fixture 30 from interfering with the installation operation of the workpiece within the workpiece mounting space between the rotating fixture 10 and the movable fixture 20.

[0022] Continue to refer to Figure 4 and Figure 6 As shown, the rotating fixture 10 includes Figure 4 The installation template 1, the limiting template 2, and the limiting mechanism 3 are shown. Specifically, the installation template 1 is fixedly mounted on the operating table of the machine body via a first bracket. A clamp 11 and a slide rail 34 extending radially along the clamp 11 are mounted on the installation template 1. A rotary power component 101 (such as a drive motor) is provided on the first bracket for driving the clamp 11 of the rotating jig 10 to rotate. The clamp 11 includes, for example, the following components... Figure 7 The diagram shows a base 111 and multiple clamping arms 112 circumferentially and uniformly connected to the base 111. The clamping arms 112 extend axially along the base 111 and form a clamping space between them. A limiting sleeve 21 is mounted on the limiting template 2 and fitted around the outer periphery of the clamp 11. The limiting mechanism 3 includes a slide 32 and a slide block 33 slidably mounted on an inclined rail 31. The slide 32 is slidably mounted on the rail 34. The mounting template 1 is also provided with a driving component 35 that drives the slide 32 to move along the rail 34. The slide block 33 is fixedly mounted on the limiting template 2 by connecting bolts. Optionally, to enable the driving component 35 to effectively adapt to the narrow installation space between the mounting template 1 and the limiting template 2, the driving component 35 is preferably [missing information - likely a specific component or design element]. Figure 7 The motor lead screw structure shown ensures that the slide 32 can move stably while making the central axis of the motor lead screw perpendicular to the central axis of the fixture 11, thereby effectively reducing the circumferential space occupied by the overall fixture.

[0023] It should be noted that the clamping arm 112 and / or the limiting sleeve 21 are provided with the following: Figure 7 The limiting inclined surface 4 shown allows the clamp 11 to clamp or release the workpiece by means of the axial movement of the limiting sleeve 21 on the clamp 11.

[0024] In this embodiment, the specific operation of clamping the rotating workpiece on the rotating fixture 10 includes: performing a workpiece installation operation in the workpiece installation space between the rotating fixture 10 and the moving fixture 20; partially inserting the rotating workpiece into the clamping space formed between the multiple clamping arms 112 at the front end of the clamp 11; activating the drive unit 35 to drive the slide 32 to move along the slide rail 34 (radially along the clamp 11); while the slide 32 is moving, it drives the inclined rail 31 to move synchronously (the inclined rail 31 is a groove opened on the slide 32), thereby driving the slide block 33 that slides with the inclined rail 31 to move along the axial direction of the clamp 11, thereby driving the limiting template 2 connected thereto to move. Specifically, when the limiting template 2 moves away from the mounting template 1, it drives the limiting sleeve 21 to move on the clamp 11 and approach the front end of the clamping arm 112, thereby performing the mold closing movement of the limiting sleeve 21, and through the limitation of the limiting inclined surface 4, it drives the multiple clamping arms 112 to retract inward, thereby clamping the rotating workpiece.

[0025] Conversely, when the material is removed after welding, the limiting template 2 moves close to the mounting template 1, which drives the limiting sleeve 21 to move on the clamp 11 and close to the rear end of the clamping arm 112. At this time, the front end of the clamping arm 112 expands and resets (slightly deforms) under its own elastic force, that is, it releases the multiple clamping arms 112 outward, thereby relaxing the rotating workpiece so as to facilitate the removal of the rotating workpiece from the clamp 11 of the rotating fixture 10.

[0026] Continue to refer to Figure 5 and Figure 6 As shown, the movable fixture 20 includes a fixed template 201, an installation template 1, a limiting template 2, and a limiting mechanism 3. Specifically, the limiting template 2 and the fixed template 201 are distributed on both sides of the installation template 1. The second bracket of the fixed template 201 is fixedly installed on the operating table of the machine body. The second bracket is provided with a moving power component 202 (such as an electric cylinder) that is fixedly connected to the installation template 1 and used to drive the movable fixture 20 to move. The structure of the installation template 1, the limiting template 2, and the limiting mechanism 3 is the same as that of the rotary fixture 10 described above. Based on this, the installation and unloading of moving workpieces in the workpiece installation space between the rotary fixture 10 and the movable fixture 20 is also the same as the operation of the rotary fixture 10 described above.

[0027] In addition, such as Figure 3 As shown, a guide post 40 is provided between the rotating fixture 10 and the moving fixture 20 to guide the reciprocating movement of the moving fixture 20, thereby accurately realizing the automatic docking of the moving workpiece and the rotating workpiece to effectively improve the welding quality.

[0028] Continue to refer to Figures 8-10 As shown, the grinding fixture 30 includes a grinding ring 301, a moving drive mechanism 302, and a rotating drive mechanism 303. Specifically, the moving drive mechanism 302 is as follows: Figure 8 The shown is arranged inside the chassis below the machine body operating table to avoid occupying the operating space above the operating table. The grinding ring sleeve 301 and the rotary drive mechanism 303 are inserted between the rotary fixture 10 and the grinding fixture 30 by passing through the through hole on the operating table.

[0029] The moving drive mechanism 302 includes a first moving member 3021, a second moving member 3022, and a third moving member 3023. The first moving member 3021 drives the grinding ring sleeve 301 to move horizontally within the radially extending plane where the joint position is located. The second moving member 3022 drives the grinding ring sleeve 301 to move vertically within the radially extending plane where the joint position is located. The third moving member 3023 drives the grinding ring sleeve 301 to move axially. (Specific details to follow) Figure 10 As shown in the diagram, after the rotating workpiece and the moving workpiece are docked and friction welding is completed, the grinding ring 301 can be moved to an eccentric abutment position with the joint of the rotating workpiece and the moving workpiece by the cooperation of the first moving part 3021 and the second moving part 3022 (e.g., Figure 10 At position a), if the second moving member 3022 drives the grinding ring sleeve 301 to move vertically upward, and at the same time the first moving member 3021 drives the grinding ring sleeve 301 to move horizontally to the right, the engagement state between the grinding ring sleeve 301 and the joint position will change from... Figure 10 The coordination at point a gradually changes to Figure 10 The mating at point b means that the grinding ring 301, while maintaining the configuration of the inner wall of the grinding cavity abutting the outer edge of the joint position, rotates clockwise eccentrically around the joint position; Figure 10 At position b, if the second moving member 3022 drives the grinding ring sleeve 301 to move vertically downwards while the first moving member 3021 drives the grinding ring sleeve 301 to move horizontally to the right, the engagement state between the grinding ring sleeve 301 and the joint position will change from... Figure 10 The coordination at point b gradually changes to Figure 10 The mating at point c also enables the grinding ring 301 to rotate clockwise eccentrically relative to the joint position. As can be seen from the above, with the real-time cooperation of the first moving part 3021 and the second moving part 3022, the eccentric rotation of the grinding ring 301 relative to the joint position can be effectively achieved, ensuring that the inner wall of the grinding ring 301 always abuts against the outer edge of the joint position.

[0030] Additionally, it should be noted that the third moving component 3023 is used to drive the grinding ring sleeve 301 to move axially, thereby adjusting the axial position of the grinding ring sleeve 301 between the rotating fixture 10 and the moving fixture 20. This ensures that the grinding ring sleeve 301 can precisely fit on the outside of the joint position of the rotating workpiece and the moving workpiece, thus flexibly adapting to different types of workpieces and ensuring the accuracy of the grinding position.

[0031] The rotary drive mechanism 303 includes, for example: Figure 9 The diagram shows a turbine 3031, a worm gear 3032, a drive motor 3033, and a gear transmission assembly 3034. Specifically, the turbine 3031 is sleeved and fixed to the outer circumference of the grinding ring 301, the worm gear 3032 is meshed and connected to the lower side of the turbine 3031, and the drive motor 3033 is located on the lower side of the worm gear 3032. The drive motor 3033 is connected to the worm gear 3032 via the gear transmission assembly 3034, thereby ensuring that the grinding ring 301 can rotate stably under the drive of the drive motor 3033 and the transmission of the turbine 3031, worm gear 3032, and gear transmission assembly 3034, thus achieving relative grinding between the grinding ring 301 and the joint position. With this structural design, all the components of the overall rotary drive mechanism 303 are arranged along the radial direction of the grinding ring sleeve 301. This ensures that the grinding ring sleeve 301 can rotate stably while effectively reducing the axial space occupied by the rotary drive mechanism 303. As a result, the rotary drive mechanism 303 and the grinding ring sleeve 301 can be flexibly adapted and installed between the rotary fixture 10 and the movable fixture 20, which have relatively small spaces, effectively improving the integration and rationality of the overall equipment structure.

[0032] In summary, the present invention also provides a friction welding method performed by the automatically aligned high-speed rotary friction welding equipment as described above, comprising: S1. The grinding ring sleeve 301 and the rotary drive mechanism 303 are driven to retract to the bottom of the operating table by the second moving part 3022 of the moving drive mechanism 302, so as to avoid the grinding fixture 30 interfering with the workpiece installation of the rotary fixture 10 and the moving fixture 20. S2. The rotating workpiece is clamped on the rotating fixture 10, and the moving workpiece is clamped on the moving fixture 20. A gap is reserved between the rotating workpiece and the moving workpiece above the through hole of the operating table. S3. The second moving part 3022 of the moving drive mechanism 302 drives the grinding ring sleeve 301 to rise into the workpiece mounting space between the rotating fixture 10 and the moving fixture 20, and places it in the gap reserved between the rotating workpiece and the moving workpiece, ensuring that the central axis of the rotating workpiece, the moving workpiece and the grinding ring sleeve 301 are on the same straight line. S4. The moving fixture 20 is driven by the moving power component 202 to move along the axis of the rotating workpiece, carrying the moving workpiece clamped thereon, so that one end of the moving workpiece passes through the grinding cavity inside the grinding ring sleeve 301 and completes the docking of the rotating workpiece and the moving workpiece. S5. The rotating fixture 10 is driven to rotate by the rotating power component 101, carrying the rotating workpiece clamped thereon, so as to perform friction welding between the rotating workpiece and the moving workpiece. S6. After welding is completed, the grinding ring 301 is driven to move circumferentially by the third moving part 3023 of the moving drive mechanism 302 to ensure that the joint position of the rotating workpiece and the moving workpiece is located in the grinding cavity inside the grinding ring 301; then, the grinding ring 301 is moved to a state of eccentric abutment with the joint position of the rotating workpiece and the moving workpiece by the cooperation of the first moving part 3021 and the second moving part 3022 of the moving drive mechanism 302, that is, the wall of the grinding cavity abuts against the outer edge surface wall of the joint position, and at the same time, the grinding ring 301 is driven to rotate by the rotating drive mechanism 303 to perform grinding of the outer edge surface wall of the joint position by the grinding ring 301. During the polishing process, the moving drive mechanism 302 and the rotating drive mechanism 303 are continuously driven so that the polishing ring sleeve 301 can rotate eccentrically around the joint position while maintaining the inner wall of the polishing cavity against the outer edge surface wall of the joint position, thereby completing the full polishing of the outer edge circumference of the joint position by the polishing ring sleeve 301. S7. After grinding, the grinding ring 301 is reset and moved to a coaxial position with the joint position by the first moving part 3021 and the second moving part 3022 of the moving drive mechanism 302. In this state, the workpiece is unloaded after cooling. Specifically, during unloading, the limiting mechanism 3 of the moving fixture 20 is used to unlock the clamp 11 of the moving workpiece. Then, the moving power part 202 drives the moving fixture 20 to move and reset, so as to form a space between the moving fixture 20 and the rotating fixture 10 that allows the workpiece to be unloaded. Then, the limiting mechanism 3 of the rotating fixture 10 is used to unlock the clamp 11 of the rotating workpiece, and the welded workpiece can be taken out from one side of the grinding ring 301.

[0033] Repeat steps S1-S7 above to achieve continuous production of the automatic alignment high-speed rotary friction welding equipment of the present invention. The loading and unloading of workpieces can be performed manually, or a robotic arm can be used to achieve fully automated loading, unloading, and welding production.

[0034] In the description of this invention, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0035] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. An automatic alignment high-speed rotary friction welding device, characterized in that, include: The rotary fixture (10) is capable of carrying the rotating workpiece clamped thereon and being driven in a rotating manner; The movable fixture (20) is disposed opposite to the rotating fixture (10) and is driven to carry the movable workpiece clamped thereon in a manner that it moves along the axis of the rotating workpiece. A grinding fixture (30) is disposed between the rotating fixture (10) and the grinding fixture (30), and includes a grinding ring sleeve (301), a moving drive mechanism (302), and a rotating drive mechanism (303). The grinding ring sleeve (301) forms a grinding cavity that is adapted to the joint position of the rotating workpiece and the moving workpiece. The moving drive mechanism (302) is used to drive the grinding ring sleeve (301) to move in the radially extending plane where the joint position is located, so that the grinding ring sleeve (301) can rotate eccentrically around the joint position while maintaining the cavity wall of the grinding inner cavity abutting against the outer edge surface wall of the joint position. The rotating drive mechanism (303) is used to drive the grinding ring sleeve (301) to rotate, so that the grinding ring sleeve (301) can circumferentially grind the joint position through the mutual misalignment of the abutment portion of the cavity wall of the grinding inner cavity and the outer edge surface wall of the joint position.

2. The automatic alignment high-speed rotary friction welding equipment according to claim 1, characterized in that: The rotating fixture (10) and the moving fixture (20) are connected by a guide post (40) to guide the moving fixture (20) and the moving workpiece clamped on it to move along the axis of the rotating workpiece.

3. The automatic alignment high-speed rotary friction welding equipment according to claim 1, characterized in that, Both the rotating fixture (10) and the moving fixture (20) include: The installation template (1) is equipped with a clamp (11). The clamp (11) includes a base (111) and a plurality of clamping arms (112) circumferentially and uniformly connected to the base (111). The clamping arms (112) extend axially along the base (111) and form a clamping space between the plurality of clamping arms (112). A limiting template (2) is set opposite to the installation template (1), and a limiting sleeve (21) is installed on it and sleeved around the outside of the clamp (11). The limiting mechanism (3) connects the mounting template (1) and the limiting template (2) and drives the limiting template (2) to move axially along the clamp (11) relative to the mounting template (1); Wherein, a limiting inclined surface (4) is provided on the clamping arm (112) and / or the limiting sleeve (21); when the limiting template (2) moves away from the mounting template (1), the limiting sleeve (21) is guided to move inward on the clamp (11) to retract the plurality of clamping arms (112); when the limiting template (2) moves close to the mounting template (1), the limiting sleeve (21) is guided to move outward on the clamp (11) to release the plurality of clamping arms (112).

4. The automatic alignment high-speed rotary friction welding equipment according to claim 3, characterized in that: The limiting mechanism (3) includes a slide (32) and a slide base (33) slidably assembled via an inclined rail (31). The slide (32) is mounted on the mounting template (1) via a slide rail (34) extending radially along the clamp (11). The mounting template (1) is also provided with a driving member (35) for driving the slide (32) to move along the slide rail (34). The slide base (33) is fixedly mounted on the limiting template (2) by connecting bolts.

5. An automatic alignment high-speed rotary friction welding device according to claim 3 or 4, characterized in that: The mounting template (1) of the rotating jig (10) is fixedly installed by the first bracket, and the first bracket is provided with a rotating power component (101) for driving the clamp (11) of the rotating jig (10) to rotate.

6. An automatic alignment high-speed rotary friction welding device according to claim 3 or 4, characterized in that: The mobile fixture (20) also includes a fixed template (201). The limiting template (2) and the fixed template (201) are distributed on both sides of the installation template (1). The fixed template (201) is fixedly installed on a second bracket. The second bracket is provided with a moving power component (202) that is fixedly connected to the installation template (1) and used to drive the mobile fixture (20) to move.

7. The automatic alignment high-speed rotary friction welding equipment according to claim 1, characterized in that: The moving drive mechanism (302) includes a first moving member (3021) and a second moving member (3022). The first moving member (3021) drives the grinding ring sleeve (301) to move horizontally in the radial extension plane where the joint is located, and the second moving member (3022) drives the grinding ring sleeve (301) to move vertically in the radial extension plane where the joint is located.

8. The automatic alignment high-speed rotary friction welding equipment according to claim 7, characterized in that: The moving drive mechanism (302) further includes a third moving component (3023), which drives the grinding ring (301) to move axially.

9. The automatic alignment high-speed rotary friction welding equipment according to claim 1, characterized in that, The rotary drive mechanism (303) includes: The turbine (3031) is sleeved and fixed to the outer circumference of the grinding ring sleeve (301); The worm (3032) is meshed with the lower side of the turbine (3031); A drive motor (3033) is installed on the lower side of the worm (3032) and is connected to the worm (3032) via a gear transmission group (3034).

10. A friction welding method performed by the automatic alignment high-speed rotary friction welding equipment according to any one of claims 1-9, characterized in that, include: S1. The grinding ring (301) is driven away from the workpiece mounting space between the rotating fixture (10) and the moving fixture (20) by the moving drive mechanism (302); S2. The rotating workpiece is clamped on the rotating fixture (10), and the moving workpiece is clamped on the moving fixture (20); S3. The grinding ring sleeve (301) is driven by the moving drive mechanism (302) to move into the workpiece mounting space between the rotating fixture (10) and the moving fixture (20), and the central axis of the rotating workpiece, the moving workpiece and the grinding ring sleeve (301) are on the same straight line. S4. Drive the movable fixture (20) to move along the axis of the rotating workpiece with the movable workpiece clamped thereon, so as to complete the docking of the rotating workpiece and the movable workpiece inside the grinding ring (301). S5. Drive the rotating fixture (10) to rotate with the rotating workpiece clamped thereon to perform friction welding between the rotating workpiece and the moving workpiece; S6. After welding is completed, the grinding ring (301) is driven by the moving drive mechanism (302) to move to a state of eccentric contact with the joint position of the rotating workpiece and the moving workpiece, that is, the inner wall of the grinding cavity abuts against the outer edge surface wall of the joint position. At the same time, the grinding ring (301) is driven to rotate by the rotating drive mechanism (303) to perform grinding of the outer edge surface wall of the joint position by the grinding ring (301). During the polishing process, the moving drive mechanism (302) and the rotating drive mechanism (303) are continuously driven so that the polishing ring (301) can rotate eccentrically around the joint position while maintaining the inner wall of the polishing cavity against the outer edge surface of the joint position, thereby completing the full polishing of the outer circumferential surface of the joint position by the polishing ring (301).

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