Hole blocking mechanism for friction welding ending hole

Abstract

The utility model discloses a hole blocking mechanism for a friction welding ending hole, which belongs to the technical field of friction welding equipment and comprises a welding mechanism, the welding mechanism is mounted on a transverse moving mechanism of a mounting frame, a jacking mechanism is arranged below the welding mechanism and arranged on a workbench, and the workbench is arranged on a rack; the jacking mechanism comprises a rotating base and a jacking base which are oppositely arranged, and one side face of the workbench makes contact with a jacking moving piece arranged on the rack; a friction head shaft sleeve is arranged at the bottom end of the welding mechanism and arranged on a mandrel of the rotary telescopic mechanism in a sleeving mode. The positions of the friction head and the workpiece and the inclination angle gap are adjusted, and the welding quality and the hole filling quality are guaranteed. And the quality problem caused by insufficient materials and the influence of excessive materials on the production efficiency are avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to friction welding equipment technical field, concretely relates to a kind of hole plugging mechanism of friction welding end hole. BACKGROUND

[0002] In modern industrial production, welding and hole filling process is an indispensable link in manufacturing process.However, the existing welding and hole filling technology has some obvious limitations, especially in dealing with complex workpieces and diversified production needs.The existing welding and hole filling technology is usually designed for specific types of workpieces and application scenarios.For example, the needle hole filling process in the end stage of traditional friction welding can only handle holes of specific shape and size, and cannot adapt to various complex working conditions.The existing welding equipment usually lacks translation and inclination adjustment functions, which may cause quality problems and affect the quality of welding and hole filling.

[0003] Chinese patent publication number: CN115476031A, publication date: December 16, 2022, discloses a vertical friction welding equipment, which includes a mechanical cover, a side box body is installed side by side on the side of the mechanical cover, and a base is fixedly installed at the bottom of the mechanical cover and the side box body.The invention uses multiple groups of corinthian columns to assist in the use of top forging processing table, installs the sliding table plate and the top plate along multiple groups of corinthian column shaft, makes the rotating main shaft and the mold clamp respectively symmetrically located in the upper and lower middle parts of the top forging processing table, and facilitates the center fixing of aluminum column and copper plate workpieces.The welding equipment can only fix workpieces, and cannot improve the inclination problem of friction head and workpieces, which may cause quality problems. UTILITY MODEL CONTENT

[0004] The utility model provides a kind of hole plugging mechanism of friction welding end hole, by setting up and workbench contact, realize workbench translation, realize the position and inclination gap of adjusting friction head and workpiece, guarantee the quality of welding and hole filling.

[0005] The further purpose of the utility model is to accurately control the amount of material in the friction head shaft sleeve by setting the telescopic rotating mechanism, avoid quality problems caused by insufficient material, and affect production efficiency due to excessive material.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme: a kind of hole plugging mechanism of friction welding end hole, including workbench, workbench is equipped with top tight mechanism, top tight mechanism includes oppositely arranged rotary seat and top tight seat, top tight mechanism includes oppositely arranged several positioning clamps, welding mechanism is installed on the horizontal moving mechanism of mounting bracket between the upper side of several positioning clamps, workbench side surface and top tight moving piece contact, welding mechanism bottom end is equipped with friction head shaft sleeve, friction head shaft sleeve is set on the core shaft of rotary telescopic mechanism.

[0007] Preferably, the top end of the mandrel is fixedly connected with the rotary telescopic rod, and the top end of the rotary telescopic rod is connected with the telescopic screw rod through a conversion joint. The rotary telescopic rod is arranged in the rotary shaft. Through the connection of the rotary telescopic rod and the telescopic screw rod, the stability of the mandrel during rotation and telescopic movement is ensured, and the reliability of the equipment is improved. The design of the telescopic screw rod makes the telescopic movement of the mandrel more accurate, and further optimizes the filling effect of the material.

[0008] Preferably, the top end of the telescopic screw rod is connected with a speed reducer, and the top end of the speed reducer is connected with a telescopic driving unit. The telescopic driving unit is preferably a core pulling motor. Through the cooperation of the speed reducer and the core pulling motor, the rotating speed of the telescopic screw rod can be accurately controlled, so that the accurate telescopic movement of the mandrel is realized. The telescopic movement driven by the motor reduces manual intervention and improves the automation level of the equipment.

[0009] Preferably, the mandrel and the friction head sleeve are arranged in the tool handle, and the top end of the tool handle is fixedly connected with the rotary shaft. The rotary shaft is fixedly connected with the sliding block frame through bolts, and the whole welding mechanism is arranged on the sliding block frame. The sliding block frame is approximately L-shaped. Arranging the mandrel and the friction head sleeve in the tool handle makes the structure compact and facilitates installation and maintenance. The design of the L-shaped sliding block frame increases the stability of the equipment and ensures the smooth progress of the welding process.

[0010] Preferably, the top end of the rotary shaft is arranged in the transmission square hole of the driven wheel, the driven wheel and the driving wheel are connected through a synchronous belt, and the rotary shaft is fixedly connected with the sliding frame. Connecting the driving wheel and the driven wheel through the synchronous belt ensures the accuracy of the rotating angle of the rotary shaft and improves the welding precision. The rotary shaft is fixedly connected with the sliding frame, which facilitates the adjustment of the position of the rotary shaft according to needs and adapts to the needs of different workpieces.

[0011] Preferably, the driving wheel is connected with the rotary driving unit above, the rotary driving unit is arranged on the fixed frame, and the rotary driving mechanism and the fixed frame are arranged on one side of the sliding block frame. The design of the rotary driving unit and the fixed frame ensures the stable rotation of the rotary shaft and reduces vibration. Arranging the rotary driving mechanism on one side of the sliding block frame makes rational use of space and makes the equipment more compact.

[0012] Preferably, the welding mechanism is installed on the lead screw of the horizontal movement mechanism, the lead screw is connected with the horizontal movement driving unit, and the mounting frame is connected with the lifting driving unit. Through the cooperation of the lead screw and the horizontal movement driving unit, the accurate translation of the welding mechanism is realized, and the accuracy of the welding position is ensured. The design of the lifting driving unit enables the height of the welding mechanism to be adjusted according to needs, which adapts to workpieces of different heights.

[0013] Preferably, the workbench is arranged on the rack, one end of the clamping moving part is in contact with the side surface of the workbench, and the other end is fixedly connected with the rack through the fixing block. The clamping moving part is preferably a screw, and the front and rear positions of the workbench are adjusted by adjusting the screw to realize the adjustment of the position of the friction head and the workpiece and the inclination gap between the workpiece and the friction head sleeve.

[0014] Preferably, the workbench is provided with a clamping driving unit, and the driving end of the clamping driving unit is connected with the clamping seat of the clamping mechanism above. The design of the clamping driving unit and the clamping seat ensures the stable clamping of the workpiece during welding, reducing the movement of the workpiece. Through the accurate clamping and positioning of the workpiece by the positioning clamp, the quality of welding and hole filling is ensured.

[0015] Preferably, the clamping mechanism comprises a rotating seat, and the opposite surfaces of the clamping seat and the rotating seat are respectively provided with positioning clamps. A gear is arranged in the rotating seat, the gear is connected with a rotating driving unit, and an infrared sensing unit is arranged above the rotating seat. The opposite surfaces of the clamping seat and the rotating seat are provided with positioning clamps, which are used for clamping and positioning the workpiece. Through the cooperation of the gear and the rotating driving unit, the accurate control of the clamping force is realized, and the stability of the workpiece during welding is ensured. The design of the infrared sensing unit enables the equipment to automatically detect the position and state of the workpiece, realizes intelligent operation, and improves the production efficiency.

[0016] The utility model discloses a kind of hole plugging mechanisms of end hole of friction welding, by setting clamping moving part and workbench contact, workbench translation is realized, the position and inclination clearance of adjusting friction head and workpiece are realized, and the quality of welding and hole filling is guaranteed.The height of mandrel can accurately control how much material in friction head bushing, avoid the quality problem caused by insufficient material, and material too much influence production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is front view of the utility model.

[0018] Figure 2 It is side view of the utility model.

[0019] Figure 3 It is a kind of structure schematic view of the welding mechanism of the utility model.

[0020] Figure 4 It is a kind of structure schematic view of the welding mechanism of the utility model.

[0021] Figure 5 It is Figure 3 Enlarged view of A in the middle.

[0022] Reference numerals in the attached drawings: 1: Frame, 2: Worktable, 3: Clamping mechanism, 3.1: Clamping drive unit, 3.2: Clamping seat, 3.3: Rotating seat, 3.4: Rotation drive unit, 3.5: Positioning fixture, 4: Welding mechanism, 4.1: Slider frame, 4.2: Telescopic drive unit, 4.3: Reducer, 4.4: Telescopic screw, 4.5: Converter joint, 4.6: Rotary telescopic rod, 4.7: Tool holder, 4.8: Mandrel, 4.9: Friction head bushing, 4.10: Rotation drive unit, 4.11: Fixed frame, 4.12: Driving wheel, 4.13: Driven wheel, 4.14: Rotating shaft, 5: Clamping moving part, 6: Fixed block, 7: Inclined clearance, 8: Mounting frame, 9: Transverse movement mechanism. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] like Figure 1 As shown, this friction welding end-hole plugging device mainly consists of a worktable 2, a clamping mechanism 3, a welding mechanism 4, a rotary telescopic mechanism, and other auxiliary components. These components work together to complete the plugging operation of the friction welding end-hole. The worktable 2 serves as the basic support structure of the entire device, supporting the workpiece and related positioning and clamping devices. The clamping mechanism 3 is installed on the worktable 2 to accurately position and stably clamp the workpiece, ensuring that the workpiece does not shift during welding and plugging. The welding mechanism 4 is the core component for realizing the plugging operation. Through the cooperation of the friction head bushing 4.9 and the rotary telescopic mechanism, an appropriate amount of material is filled into the end-hole. The rotary telescopic mechanism can precisely control the height of the mandrel 4.8, thereby accurately adjusting the amount of material in the friction head bushing 4.9, avoiding quality problems and reduced production efficiency caused by insufficient or excessive material.

[0025] Principles of motion.

[0026] Preparation process: First, place the workpiece to be machined into the positioning fixture 3.5 between the clamping seat 3.2 and the rotating seat 3.3. This part has a keyhole-shaped area; align this keyhole with the area on the part that needs repairing the hole.

[0027] Fixing the part: The clamping drive unit 3.1, i.e. the clamping cylinder, starts working and pushes the clamping seat 3.2, which tightly fixes the part and prevents it from moving during the machining process.

[0028] Adjusting the position: The rotating drive unit 3.4 rotates the gear to rotate the entire workpiece to a specific angle. This angle is to enable the machining tool to accurately aim at the area to be repaired.

[0029] Starting the machining: The welding mechanism 4 starts moving downward through the lifting drive unit. The welding mechanism 4 serves to press the machining tool, i.e. the friction head shaft sleeve 4.9, onto the workpiece. In addition, the rotating drive unit 4.10 also starts working, which drives the driving wheel 4.12 to rotate and in turn drives the driven wheel 4.13 to rotate, thereby driving the rotating shaft 4.14 to start rotating. The rotating shaft 4.14 drives the tool handle 4.7, the mandrel 4.8, and the friction head shaft sleeve 4.9 to rotate together.

[0030] Scraping: When the welding mechanism 4 moves down to a certain position and the friction head shaft sleeve 4.9 contacts the surface of the workpiece, it continues to press down for a certain distance to start scraping the excess material (scraping) on the surface of the part. This process is to clean the repair area to enable the subsequent repair work to proceed smoothly.

[0031] Rotating to the initial position: At the same time of scraping, the positioning clamp 3.5 of the clamping seat 3.2 starts to slowly rotate forward to return to its initial position.

[0032] Hole repairing: After the gear box returns to the initial position, the extension drive unit 4.2, i.e. the core pulling motor, starts working. Through the reducer 4.3, the extension screw 4.4 is driven. The extension screw 4.4 drives the conversion joint 4.5, the rotating extension rod 4.6, the mandrel 4.8, and the friction head shaft sleeve 4.9 to move downward together. The purpose of this action is to extrude some internal material, i.e. repair material, into the hole on the workpiece.

[0033] Completing the repair: When the material is extruded into the hole and reaches the appropriate position, the welding mechanism 4 will press down again as a whole for a certain distance, and then stay for a short period of time to allow the material to stabilize in the hole. After that, the welding mechanism 4 moves upward to return to the original position, and at the same time, the extension screw 4.4 above the mandrel 4.8 also moves upward to return to the original position.

[0034] Ending the work: Finally, the second clamping drive unit drives the rotating seat 3.3 to return to the original position, releasing the workpiece. Then, the workpiece can be taken out, and the entire repair work is completed.

[0035] As Figure 1As shown, the workbench 2 is arranged on the frame 1, providing a stable working platform for the entire device. The frame 1 is usually made of high-strength steel, with good rigidity and stability, capable of bearing various forces generated during the operation of the device. The surface of the workbench 2 is precisely machined to ensure its flatness and smoothness, ensuring the stability of the workpiece during placement and processing.

[0036] As shown in Figure 1 , Figure 2 and Figure 5 , the top moving part 5 is in contact with the side of the workbench 2 at one end and is fixed to the frame 1 by the fixed block 6 at the other end. The top moving part 5 is preferably a screw, which allows the operator to adjust the position of the workbench 2 by simply adjusting the screw. In actual operation, when adjusting the position of the friction head and the workpiece, as well as the inclination gap 7 of the workpiece and the friction head shaft sleeve 4.9, the operator only needs to use a wrench to turn the screw. For example, when welding workpieces of different shapes and sizes, it may be necessary to fine-tune the position of the workbench 2 according to the specific circumstances of the workpiece to ensure that the friction head can accurately align with the end hole and maintain the appropriate inclination gap 7. In this way, the quality of welding and hole filling can be effectively guaranteed.

[0037] As shown in Figure 1 , the workbench 2 is provided with a clamping driving unit 3.1, and the driving end of the clamping driving unit 3.1 is connected with the clamping seat 3.2 of the clamping mechanism 3 above. The clamping driving unit 3.1 is preferably a clamping oil cylinder. In actual work, the clamping driving unit 3.1 can provide stable and adjustable clamping force to ensure the stable clamping of the workpiece during welding. The clamping seat 3.2 and the rotating seat 3.3 are provided with positioning clamps 3.5 on the opposite surfaces, which are designed according to the shape and size of the workpiece and can accurately clamp and position the workpiece. For example, for circular workpieces, a positioning clamp 3.5 with an arc-shaped clamp can be used to ensure that the workpiece does not shift during clamping. In some batch production scenarios, the design of the positioning clamp 3.5 can achieve quick clamping and disassembly, improving production efficiency.

[0038] The clamping mechanism 3 includes a rotating seat 3.3, which is provided with a gear inside, and the gear is connected with a rotating driving unit 3.4. The rotating driving unit 3.4 can be a motor or other power device, which can accurately adjust the angle of the positioning clamp 3.5 of the rotating seat 3.3 by controlling the rotation of the gear, thereby achieving accurate control of the angle of the workpiece.

[0039] As shown in Figure 1As shown, the welding mechanism 4 is installed on the screw rod of the transverse movement mechanism 9, and the screw rod is connected with the transverse driving unit. The transverse driving unit usually drives the rotation of the screw rod by using a motor, so as to realize the accurate translation of the welding mechanism 4. In actual work, when the welding position needs to be adjusted, the transverse driving unit can accurately control the rotation angle of the screw rod according to the instruction of the control system, so as to drive the welding mechanism 4 to move in the horizontal direction. For example, when the hole plugging operation is performed on a series of arranged friction welding end holes, the welding mechanism 4 can be quickly and accurately moved above each hole by the transverse movement mechanism 9, so as to ensure the accuracy of the welding position.

[0040] The mounting frame 8 is connected with the lifting driving unit, and the lifting driving unit is designed so that the height of the welding mechanism 4 can be adjusted as needed. The lifting driving unit can adopt various forms such as a hydraulic cylinder, an air cylinder or a motor combined with a lead screw. In actual operation, when facing workpieces of different heights, the operator can adjust the lifting driving unit through the control system, so that the welding mechanism 4 is raised or lowered to the appropriate height.

[0041] As shown in Figure 3 and Figure 4 , the top end of the mandrel 4.8 is fixedly connected with the rotary telescopic rod 4.6, and the top end of the rotary telescopic rod 4.6 is connected with the telescopic screw rod 4.4 through the conversion joint 4.5. The rotary telescopic rod 4.6 is arranged in the rotary shaft 4.14, and the connection between the rotary telescopic rod 4.6 and the telescopic screw rod 4.4 ensures the stability of the mandrel 4.8 during rotation and telescoping. The top end of the telescopic screw rod 4.4 is connected with the speed reducer 4.3, the top end of the speed reducer 4.3 is connected with the telescopic driving unit 4.2, and the telescopic driving unit 4.2 is preferably a core pulling motor. In actual work, the core pulling motor accurately controls the rotation speed of the telescopic screw rod 4.4 through the speed reducer 4.3, so as to realize the accurate telescoping of the mandrel 4.8. For example, when the filling amount of the material in the friction head sleeve 4.9 needs to be controlled, the core pulling motor can accurately adjust the extension length of the mandrel 4.8 according to the preset program, so as to control the amount of material entering the friction head sleeve 4.9. In a certain plastic product manufacturing enterprise, by adopting this accurate mandrel 4.8 control mode, the filling amount error of the material in the friction head sleeve 4.9 is controlled, and the quality problems caused by too much or too little material are effectively avoided.

[0042] As shown in Figure 4As shown, the mandrel 4.8 and the friction head bushing 4.9 are arranged in the tool holder 4.7, and the top end of the tool holder 4.7 is fixedly connected with the rotating shaft 4.14. The rotating shaft 4.14 is fixed on the slider bracket 4.1 by bolts, and the entire welding mechanism 4 is arranged on the slider bracket 4.1, which is generally L-shaped. Arranging the mandrel 4.8 and the friction head bushing 4.9 in the tool holder 4.7 makes the structure compact, facilitating installation and maintenance. The design of the L-shaped slider bracket 4.1 increases the stability of the equipment, ensuring smooth welding process. During actual installation and debugging, it is necessary to ensure that the connection between each component is firm and reliable, and the rotation accuracy of the rotating shaft 4.14 is guaranteed. For example, when installing the rotating shaft 4.14, high-precision positioning tools are required to ensure that the center line of the rotating shaft 4.14 coincides with the center line of other components, so as to ensure the normal operation of the equipment.

[0043] The top end of the rotating shaft 4.14 is arranged in the transmission square hole of the driven wheel 4.13, the driven wheel 4.13 and the driving wheel 4.12 are connected by a synchronous belt, the driving wheel 4.12 is connected with the upper rotary driving unit 4.10, the rotary driving unit 4.10 is arranged on the fixed frame 4.11, and the rotary driving mechanism and the fixed frame 4.11 are arranged on one side of the slider bracket 4.1. The synchronous belt connects the driving wheel 4.12 and the driven wheel 4.13, which can ensure the rotation angle accuracy of the rotating shaft 4.14 and improve the welding accuracy. In actual work, the rotary driving unit 4.10 usually adopts motor-driven mode, and the power is transmitted to the driven wheel 4.13 through the synchronous belt, thereby driving the rotating shaft 4.14 to rotate.

[0044] The design of the rotary driving unit and the fixed frame 4.11 ensures the stable rotation of the rotating shaft 4.14 and reduces vibration. The fixed frame 4.11 is usually made of high-strength steel, which has good rigidity and stability and can effectively support the rotary driving unit 4.10 and the rotating shaft 4.14. During equipment operation, the fixed frame 4.11 can absorb and disperse the vibration and impact force generated by the rotating shaft 4.14, ensuring the normal operation of the equipment. At the same time, the rotary driving mechanism is arranged on one side of the slider bracket 4.1, which reasonably utilizes the space and makes the equipment more compact. In some production workshops with limited space, this compact design can effectively save space and improve the installation and use convenience of the equipment.

[0045] The driving units of the welding mechanism 4 all adopt servo motors, which can realize precise control of the filling process through the servo motor with telescopic screw 4.4, ensuring that the internal material can be fully fused to avoid holes and improve the welding quality. Too fast or too slow filling speed will affect the quality of the caulking welding and cause product quality problems. At the same time, the filling mode of the servo motor with telescopic screw 4.4 can accurately control the amount of material in the friction head bushing 4.9 through the height of the mandrel 4.8, avoiding quality problems caused by insufficient material and affecting production efficiency due to excessive material.

[0046] By optimizing the principle and operation process of the equipment, the operation steps are simplified, and the production efficiency is improved. Specifically, the mold clamping mechanism 3 is clamped, the pressure is in place, the initial position of the rotating motor is zero, the rotating motor is rotated clockwise at a certain angle, the rotating motor of the rotating shaft 4.14 is rotated at a set speed, the welding mechanism 4 is pressed to the workpiece position, the rotating servo motor is slowly rotated counterclockwise to zero, the telescopic servo telephone of the mandrel 4.8 is driven to slowly push out the telescopic screw rod 4.4 by a set distance, after the position is reached, the friction head shaft sleeve 4.9 is slowly pressed down by 0.5mm, after completion, the friction head shaft sleeve 4.9 is slowly raised by 1mm, then quickly returns to zero, each servo motor returns to zero, the mold clamping mechanism 3 is unclamped, and the workpiece is taken out, the action is completed.

[0047] The device is not only suitable for filling the needle hole in the tailing stage of friction welding, but also can be widely used in hole filling of other similar situations. According to the need, the hole plugging process can be carried out many times to fill multiple holes, which has a wide application prospect. The device has strong universality and is suitable for different specifications of products. The translation of the welding mechanism 4 can be used for different working conditions of products. The translation of the workbench 2 can adjust the position and inclination gap 7 between the friction head shaft sleeve 4.9 and the workpiece.

[0048] Obviously, the above embodiments are only examples for clear illustration, and not limitation of the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments need not and cannot be exhausted. The obvious changes or variations derived therefrom are still within the protection scope of the utility model.

Claims

1. A friction welding end hole plugging mechanism, characterized in that, It comprises a welding mechanism, the welding mechanism is installed on the transverse mechanism of the mounting frame, the top pressing mechanism is arranged below the welding mechanism, the top pressing mechanism is arranged on the workbench, and the workbench is arranged on the rack; The top pressing mechanism comprises oppositely arranged rotating seats and top pressing seats, and one side surface of the workbench is in contact with the top pressing moving piece arranged on the rack; The bottom end of the welding mechanism is provided with a friction head shaft sleeve, and the friction head shaft sleeve is sleeved on the core shaft of the rotating telescopic mechanism.

2. A hole-plugging mechanism for finishing holes in a friction weld as defined in claim 1, wherein The top end of the core shaft is fixedly connected with the rotating telescopic rod, and the top end of the rotating telescopic rod is connected with the telescopic screw rod through the conversion joint.

3. A plug hole mechanism for finishing holes in friction welding as defined in claim 2, wherein The top end of the telescopic screw rod is connected with the speed reducer, and the top end of the speed reducer is connected with the telescopic driving unit.

4. A hole plugging mechanism for finishing holes in a friction weld as defined in claim 1 or 2, wherein The core shaft and the friction head shaft sleeve are arranged in the tool handle, and the top end of the tool handle is fixedly connected with the rotating shaft.

5. A plug hole mechanism for finishing holes in friction welding as defined in claim 4, wherein The top end of the rotating shaft is arranged in the transmission square hole of the driven wheel, the driven wheel and the driving wheel are connected through the synchronous belt, and the rotating shaft is fixedly arranged on the sliding frame.

6. A plug hole mechanism for finishing holes in a friction weld as defined in claim 5, wherein The driving wheel is connected with the rotating driving unit above, the rotating driving unit is arranged on the fixed frame, and the rotating driving mechanism and the fixed frame are arranged on one side of the sliding block frame.

7. A plug hole mechanism for finishing holes in friction welding as defined in claim 1, wherein The welding mechanism is installed on the lead screw of the transverse mechanism, the lead screw is connected with the transverse driving unit, and the mounting frame is connected with the lifting driving unit.

8. A plug hole mechanism for finishing holes in a friction weld as defined in claim 1, wherein The workbench is arranged on the rack, one end of the top pressing moving piece is in contact with the side surface of the workbench, and the other end is fixedly arranged on the rack through the fixed block.

9. A hole-plugging mechanism for finishing holes in a friction weld as defined in claim 1 or 8, wherein The workbench is provided with a top pressing driving unit, and the driving end of the top pressing driving unit is connected with the top pressing seat of the top pressing mechanism above.

10. A plug hole mechanism for finishing holes in a friction weld as defined in claim 9, wherein The opposite surfaces of the top pressing seat and the rotating seat are respectively provided with positioning clamps, the rotating seat is provided with a gear, the gear is connected with the rotating driving unit, and the rotating seat is provided with an infrared sensing unit above.

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