Multi-degree-of-freedom positioning platform for welding of special-shaped parts

Abstract

This invention relates to the field of welding equipment technology, and more particularly to a multi-degree-of-freedom positioning platform for welding irregularly shaped parts. The multi-degree-of-freedom positioning platform for welding irregularly shaped parts includes a platform, characterized in that: the platform is provided with an adaptive clamping mechanism for adaptively clamping the irregularly shaped parts, a limiting component for locking the state of the adaptive clamping mechanism after clamping, and a fine-tuning mechanism for adjusting the spatial posture of the irregularly shaped parts to align the welding surfaces. By setting up the adaptive clamping mechanism, when the push plate slides, hydraulic oil in the storage tube is forced into the irregularly shaped tube, pushing the push rod and its end plate to clamp the irregularly shaped parts. The push rod can adaptively adjust its extension length according to the contour of the irregularly shaped parts, thereby enabling the adaptive clamping mechanism to clamp irregularly shaped parts of different shapes. By setting up the limiting component, the top plate can be limited, improving the stability of the top plate clamping the irregularly shaped parts. By setting up the fine-tuning mechanism, the welding surfaces of two irregularly shaped parts can be aligned.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, and in particular to a multi-degree-of-freedom positioning platform for welding irregularly shaped parts. Background Technology

[0002] As an indispensable key auxiliary tool for welding operations, welding platforms are known for their stability and reliability. Their core function is to provide a stable working surface, and their height and angle can be adjusted according to needs to ensure accurate welding.

[0003] To ensure welding accuracy, the workpiece usually needs to be clamped before welding. Current welding platforms can only clamp workpieces with fixed shapes. For irregularly shaped parts, the clamping equipment needs to be constantly adjusted according to their shape, and the welding surfaces of irregularly shaped parts are difficult to align. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, the present invention provides a multi-degree-of-freedom positioning platform for welding irregularly shaped parts.

[0005] The technical solution is: a multi-degree-of-freedom positioning platform for welding irregularly shaped parts, comprising the platform, wherein the platform is provided with an adaptive clamping mechanism for adaptively clamping the irregularly shaped parts, a limiting component for locking the state of the adaptive clamping mechanism after clamping, and a fine-tuning mechanism for adjusting the spatial posture of the irregularly shaped parts to align the welding surfaces; wherein the adaptive clamping mechanism, the limiting component, and the fine-tuning mechanism work together to achieve stable clamping of the irregularly shaped parts and precise adjustment of the welding posture;

[0006] The adaptive clamping mechanism includes a support platform symmetrically arranged on the platform and irregularly shaped tubes symmetrically mounted on the support platform. A storage tube is connected to the irregularly shaped tube. A push plate is slidably installed inside the storage tube. Multiple push rods are arranged and slidably installed inside the irregularly shaped tube. A first compression spring is provided between the push rod and the inner wall of the irregularly shaped tube. A top plate is hinged to the end of the push rod outside the irregularly shaped tube. An arc-shaped toothed plate is fixedly installed on the outer wall of the top plate. A plug block is provided on one side of the arc-shaped toothed plate for use with it.

[0007] To further explain, the adaptive clamping mechanism also includes a T-shaped shaft fixedly installed on one side of the insert block and slidably installed inside the push rod. A second compression spring is provided between the T-shaped shaft and the push rod. The same connecting frame driven by a hydraulic cylinder is fixedly connected to the two push plates on the same side. The connecting frame is slidably connected to the storage tube through it.

[0008] To further explain, the adaptive clamping mechanism also includes an elastic sliding plate that is slidably mounted inside the irregular tube.

[0009] To further explain, the limiting component includes a bracket that is elastically slidably installed inside the irregular tube, and multiple C-shaped plates that slide against the inner wall of the irregular tube are arranged and fixedly installed on the bracket.

[0010] To further explain, the fine-tuning mechanism includes an electric slide rail symmetrically mounted on the platform. A gear fixedly connected to the support platform is movably connected inside the electric slide rail. Racks symmetrically mounted on the platform are provided on both sides of the gear. After the racks move, they mesh with the gears. Two sets of C-shaped telescopic frames are symmetrically provided on the platform. A through groove is opened on the C-shaped telescopic frame. A slider located in the through groove is fixedly mounted on the rack.

[0011] To further explain, the fine-tuning mechanism also includes a guide rail located on one side of the rack and fixedly connected to the platform, and the slider is slidably installed in the guide rail.

[0012] To further explain, the fine-tuning mechanism also includes an electric lifting frame symmetrically installed on the platform. The C-shaped telescopic frame is elastically slidably installed inside the telescopic end of the electric lifting frame. A positioning plate is elastically rotatably connected to the telescopic end of the electric lifting frame. A lever is symmetrically fixedly installed on the positioning plate. A rotating wheel that cooperates with the lever is rotatably connected to the telescopic end of the C-shaped telescopic frame.

[0013] To further explain, two sets of mounting brackets are symmetrically fixedly installed on the platform. A control plate is slidably connected inside the mounting bracket. A tension spring is provided between the control plate and the inner wall of the mounting bracket. A groove is provided on the C-shaped telescopic bracket. An elastic wedge is slidably connected inside the groove. A toothed groove matching the elastic wedge is provided at the bottom of the control plate.

[0014] To further explain, a plug rod is slidably mounted through the mounting bracket, and a slot matching the plug rod is provided on one side of the control panel.

[0015] To further explain, a pedal is provided on one side of the mounting bracket. The pedal is elastically and slidably mounted on the platform. A diagonal rod is fixedly mounted on the pedal, and the diagonal rod is slidably connected to the insertion rod through it.

[0016] Beneficial effects:

[0017] 1. This invention features an adaptive clamping mechanism. When the push plate slides, the hydraulic oil in the storage tube is forced into the shaped tube, pushing the push rod and the top plate at its end to clamp the shaped part. The push rod can adaptively adjust its stroke according to the volume of the shaped part, thus enabling the adaptive clamping mechanism to clamp shaped parts of different shapes. By setting a limiting component, the top plate can be limited, improving the stability of the top plate clamping the shaped part. By setting a fine-tuning mechanism, the welding surfaces of the two shaped parts can be aligned.

[0018] 2. By setting up an elastic sliding plate, after all the top plates have finished clamping the irregular part and the insert block has engaged with the arc-shaped toothed plate, the excess hydraulic oil can be temporarily stored in the oil storage cavity of the irregular tube. By setting up a C-shaped plate, the internal channel of the irregular tube can be blocked, further improving the stability of the top plates clamping the irregular part.

[0019] 3. By setting a positioning plate, the present invention can control the movement of different racks according to the offset direction of the welding surface of the irregular part, and can adjust the movement stroke of the rack according to the degree of offset of the welding surface of the irregular part, thereby changing the meshing stroke of the gear and the rack to ensure that the welding surfaces of the two irregular parts can be aligned. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the adaptive clamping mechanism of the present invention;

[0022] Figure 3 This is a schematic diagram of the installation of the top rod of the present invention;

[0023] Figure 4 This is a schematic diagram of the installation of the insertion block of the present invention;

[0024] Figure 5 This is a schematic diagram of the installation at the top plate of the present invention;

[0025] Figure 6 This is a schematic diagram of the installation at the connecting frame of the present invention;

[0026] Figure 7 This is a schematic diagram of the fine-tuning mechanism of the present invention;

[0027] Figure 8 This is a schematic diagram of the structure of the U-shaped telescopic frame of the present invention;

[0028] Figure 9 This is a schematic diagram of the installation of the gear in this invention;

[0029] Figure 10 This is a schematic diagram of the installation of the guide rail of the present invention;

[0030] Figure 11 This is a schematic diagram of the installation of the control board of the present invention;

[0031] Figure 12 This is a schematic diagram of the installation of the diagonal rod in this invention.

[0032] The meanings of the reference numerals in the diagram are as follows: 1-Platform, 201-Bearing platform, 202-Irregular tube, 203-Storage tube, 204-Push plate, 205-Top rod, 206-Top plate, 207-Arc-shaped toothed plate, 208-Insertion block, 301-T-shaped shaft, 302-Hydraulic cylinder, 303-Connecting frame, 401-Elastic sliding plate, 501-Bracket, 502-C-shaped plate, 601-Electric slide rail, 602-Gear, 603-Rack, 604-C-shaped telescopic frame, 605-Slider, 701-Guide rail, 801-Electric lifting frame, 802-Positioning plate, 803-Roller, 901-Mounting frame, 902-Control panel, 903-Elastic wedge, 1001-Insertion rod, 1101-Pedal, 1102-Diagonal rod. Detailed Implementation

[0033] The invention will now be described more fully below with reference to the accompanying drawings, in which presently preferred embodiments of the invention are illustrated. However, the invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness and to fully convey the scope of the invention to those skilled in the art.

[0034] Example 1

[0035] A multi-degree-of-freedom positioning platform for welding irregularly shaped parts, such as Figures 1-5 As shown, the device includes a platform 1, on which is provided an adaptive clamping mechanism for adaptively clamping irregularly shaped parts, a limiting component for locking the state of the adaptive clamping mechanism after clamping, and a fine-tuning mechanism for adjusting the spatial posture of the irregularly shaped parts to align the welding surfaces; wherein, the adaptive clamping mechanism, the limiting component and the fine-tuning mechanism work together to achieve stable clamping of irregularly shaped parts and precise adjustment of welding posture.

[0036] The adaptive clamping mechanism includes a support platform 201 symmetrically arranged on the platform 1 and a shaped tube 202 symmetrically fixedly installed on the support platform 201. A storage tube 203 is connected to the shaped tube 202. Hydraulic oil is filled in the shaped tube 202 and the storage tube 203. A push plate 204 is slidably installed in the storage tube 203. Four push rods 205 are equidistantly arranged and slidably installed in the shaped tube 202. A first compression spring is provided between the push rod 205 and the inner wall of the shaped tube 202. The first compression spring is sleeved on the outer wall of the push rod 205. A top plate 206 is hinged to the end of the push rod 205 outside the shaped tube 202. An arc-shaped toothed plate 207 is fixedly installed on the outer wall of the top plate 206. A plug 208 is provided on one side of the arc-shaped toothed plate 207 for use with it. When the plug 208 engages with the arc-shaped toothed plate 207, it can limit the top plate 206.

[0037] like Figures 3-6As shown, the adaptive clamping mechanism also includes a T-shaped shaft 301 fixedly installed on one side of the insert block 208 and slidably installed inside the top rod 205. A second compression spring is provided between the T-shaped shaft 301 and the top rod 205. The second compression spring is sleeved on the outer wall of the T-shaped shaft 301. There is a gap between the T-shaped shaft 301 and the inner wall of the shaped tube 202. The same connecting frame 303 driven by the hydraulic cylinder 302 is fixedly connected to the two push plates 204 on the same side. The hydraulic cylinder 302 is installed on the support platform 201 through the support plate. The connecting frame 303 is slidably connected to the storage tube 203.

[0038] like Figure 3 As shown, the adaptive clamping mechanism also includes an elastic slide plate 401 that is slidably installed inside the shaped tube 202, which divides part of the space inside the shaped tube 202 into an oil storage chamber.

[0039] like Figure 3 As shown, the limiting component includes a bracket 501 that is elastically slidably installed inside the shaped tube 202. Four C-shaped plates 502 that slide against the inner wall of the shaped tube 202 are arranged and fixedly installed on the bracket 501. After the C-shaped plates 502 slide, they can block the internal channel of the shaped tube 202, so that the hydraulic oil pushing the push rod 205 and the T-shaped shaft 301 no longer flows.

[0040] Initially, the two support platforms 201 are far apart, and the push plate 204 is located inside the storage tube 203 on the side away from the shaped tube 202, abutting against the inner wall of the storage tube 203. Both the first and second compression springs are in the released state. First, the two shaped parts are placed on the two support platforms 201 respectively, with the welding surfaces of the two shaped parts facing each other. The extension end of the hydraulic cylinder 302 is controlled to extend. The extension end of the hydraulic cylinder 302 drives the push plate 204 to slide along the storage tube 203 through the connecting frame 303. The hydraulic oil in the storage tube 203 is pushed into the shaped tube 202 by the push plate 204, so that the hydraulic oil in the shaped tube 202 acts on the push rod 205, the T-shaped shaft 301 and the elastic sliding... When the plate 401 applies a pushing force, because the elastic force of the elastic sliding plate 401 is greater than the elastic force of the second compression spring, and the elastic force of the second compression spring is greater than the elastic force of the first compression spring, each push rod 205 independently slides out of the shaped tube 202 under the action of hydraulic oil, and drives the top plate 206 on it to move, and drives the insertion block 208 to move synchronously through the second compression spring and the T-shaped shaft 301. Taking one of the top plates 206 as an example, when the top plate 206 moves to contact the outer wall of the shaped part, the top plate 206 is squeezed by the outer wall of the shaped part and rotates freely until it fits against the outer wall of the shaped part, and applies a reaction force to the push rod 205. The push rod 205 stops moving under the force. All the other top plates 206 are in contact with the outer wall of the irregular part. At this time, all the push rods 205 stop moving, while the push plate 204 continues to move, increasing the hydraulic oil's thrust on the T-shaped shaft 301. The T-shaped shaft 301 slides along the push rods 205 under force, driving the insert block 208 to move. The second compression spring contracts under force. After the insert block 208 moves, it meshes with the arc-shaped toothed plate 207, limiting the top plate 206 and preventing it from rotating. This improves the stability of the top plate 206 in clamping the irregular part and prevents the irregular part from shaking or misaligning. At this time, the arc-shaped toothed plate 207 stops the T-shaped shaft 301 through the insert block 208, while the push plate 204 continues to move, increasing the hydraulic oil's thrust on the elastic sliding plate 4. The thrust of 01 causes the elastic slide plate 401 to contract and slide elastically, allowing the hydraulic oil in the shaped tube 202 to enter the oil storage chamber of the shaped tube 202. Subsequently, the push plate 204 contacts and squeezes the support 501. The support 501 contracts and slides elastically, driving the four C-shaped plates 502 on it to slide until the push plate 204 abuts against the inner wall of the storage tube 203. The push plate 204 no longer pushes the support 501. Each C-shaped plate 502 blocks the internal channel of the shaped tube 202, preventing the hydraulic oil of the push rod 205 and the T-shaped shaft 301 from flowing. This allows the top plate 206 to maintain stable clamping of the shaped part, further improving the stability of the top plate 206 in clamping the shaped part.

[0041] As a further supplement, the hydraulic oil enters the oil storage cavity of the shaped tube 202 by the elastic contraction and sliding of the elastic slide plate 401. When clamping small shaped parts, the push rod 205 slides along the shaped tube 202 for a large stroke, thus reducing the amount of hydraulic oil entering the oil storage cavity. When clamping large shaped parts, the push rod 205 slides along the shaped tube 202 for a small stroke, thus increasing the amount of hydraulic oil entering the oil storage cavity. This enables the adaptive clamping mechanism to clamp shaped parts of different volumes.

[0042] Example 2

[0043] like Figures 7-9 As shown, the fine-tuning mechanism includes an electric slide rail 601 symmetrically mounted on the platform 1. A gear 602, which is fixedly connected to the support platform 201, is movably connected inside the electric slide rail 601. A rack 603, which is symmetrically mounted on the platform 1, is provided on the front and rear sides of the gear 602. After the rack 603 moves, it meshes with the gear 602. Two sets of C-shaped telescopic frames 604 are symmetrically provided on the platform 1, with two frames in each set. A through groove is opened at the bottom of the fixed end of the C-shaped telescopic frame 604. A slider 605 located in the through groove is fixedly installed on the top of the rack 603.

[0044] like Figure 9 and Figure 10 As shown, the fine-tuning mechanism also includes a guide rail 701 located on one side of the rack 603 and fixedly connected to the platform 1. The slider 605 is slidably installed in the guide rail 701, and the rack 603 can be controlled to move closer to or away from the gear 602 through the guide rail 701.

[0045] like Figure 7 and Figure 8 As shown, the fine-tuning mechanism also includes an electric lifting frame 801 symmetrically installed on the platform 1. The telescopic end of the C-shaped telescopic frame 604 is elastically slidably installed in the telescopic end of the electric lifting frame 801 in the left and right direction. A positioning plate 802 is elastically rotatably connected to the telescopic end of the electric lifting frame 801. A lever is symmetrically fixedly installed on the front and rear sides of the positioning plate 802. A rotating wheel 803 that cooperates with the lever is rotatably connected to the top of the telescopic end of the C-shaped telescopic frame 604.

[0046] like Figure 7 , Figure 11 and Figure 12 As shown, two sets of mounting brackets 901 are symmetrically fixedly installed on the top of the platform 1, with each set having two brackets arranged in front and behind. A control plate 902 is slidably connected inside the mounting bracket 901 along the vertical direction. A tension spring is provided between the top of the control plate 902 and the top of the inner wall of the mounting bracket 901. A groove is provided on the U-shaped telescopic frame 604, and an elastic wedge 903 is slidably connected in the groove. A toothed groove matching the elastic wedge 903 is provided at the bottom of the control plate 902.

[0047] like Figure 11 and Figure 12 As shown, a rod 1001 is slidably mounted through the side wall of the mounting bracket 901. A slot matching the rod 1001 is provided on one side of the control board 902. When the rod 1001 is inserted into the slot, the bottom of the control board 902 is in contact with the U-shaped telescopic bracket 604.

[0048] like Figure 11 and Figure 12 As shown, a pedal 1101 is provided on one side of the mounting bracket 901. The pedal 1101 is elastically slidably mounted on the platform 1 in the up-down direction. A diagonal rod 1102 is fixedly installed at the bottom of the pedal 1101. The diagonal rod 1102 is slidably connected to the insertion rod 1001 through the pedal.

[0049] Initially, there is a gap between gear 602 and the adjacent rack 603. The length direction of positioning plate 802 is consistent with the horizontal length direction of electric lifting frame 801. Elastic wedge 903 is inserted into the tooth groove of control plate 902. The elastic force of pedal 1101 is greater than the elastic force of tension spring. Pedal 1101, through inclined rod 1102, causes insertion rod 1001 to press against the slot of control plate 902. Tension spring is in an extended state. After the adaptive clamping mechanism completes clamping of the irregular part, due to the large volume of the irregular part, it is difficult to ensure that the welding surfaces of the two irregular parts are precisely aligned when the irregular part is placed on the support platform 201. Therefore, it is necessary to fine-tune the angle of the irregular part to ensure that the welding surfaces of the two irregular parts are precisely aligned when welding the irregular part. First, control the electric... The telescopic end of the lifting frame 801 extends, causing the positioning plate 802 to rise to the height of the welding surface of the irregular part, and causing the telescopic end of the corresponding C-shaped telescopic frame 604 to extend. Then, the telescopic end of the electric lifting frame 801 is controlled to stop extending, and the telescopic ends of the positioning plate 802 and the C-shaped telescopic frame 604 stop moving. Then, the gear 602 is controlled to move through the electric slide rail 601. The two gears 602 respectively drive the two bearing platforms 201 to move closer to each other. The bearing platforms 201 clamp the irregular part through the adaptive clamping mechanism. Subsequently, the welding surface of the irregular part contacts the positioning plate 802. The positioning plate 802 is squeezed by the welding surface of the irregular part and rotates clockwise or counterclockwise elastically. Taking the positioning plate 802 on the right as an example, the positioning plate 802... When rotated counterclockwise, the positioning plate 802 drives the lever on it to press against the rotating wheel 803 on the front C-shaped telescopic frame 604. The rotating wheel 803, under force, causes the C-shaped telescopic frame 604 to elastically contract and slide to the right. The through groove of the C-shaped telescopic frame 604 drives the corresponding rack 603 to move to the right through the slider 605, and drives the elastic wedge 903 to move. The elastic wedge 903 is continuously elastically contracted and released by the tooth groove of the control plate 902. The inner wall of the guide rail 701 presses against the outer wall of the slider 605, causing the slider 605 to slide along the through groove of the C-shaped telescopic frame 604. The slider 605 drives the rack 603 to move towards the side closer to the gear 602. Then the slider 605 moves to the corner of the guide rail 701 and passes over it. The slider 605 continues along the... The guide rail 701 slides, driving the rack 603 to move until the positioning plate 802 is fully engaged with the welding surface of the irregular part. The electric slide rail 601 controls the gear 602 to stop moving, thus stopping the irregular part. The telescopic end of the electric lifting frame 801 extends again, causing the positioning plate 802 to rise again, and the telescopic end of the C-shaped telescopic frame 604 to extend again until the positioning plate 802 passes over the irregular part. The toothed groove of the control plate 902, through the elastic wedge 903, limits the C-shaped telescopic frame 604, thus stabilizing the rack 603 after movement. The telescopic end of the electric lifting frame 801 stops extending, thus stopping the movement of the positioning plate 802 and the telescopic end of the C-shaped telescopic frame 604.Then, the electric slide rail 601 continues to control the movement of gear 602, thereby causing the adaptive clamping mechanism to continue moving while holding the irregular part. Subsequently, gear 602 meshes with the rack 603 on the front side and rotates under the action of rack 603. Gear 602 drives the support platform 201 to rotate, and the support platform 201 drives the irregular part to rotate through the adaptive clamping mechanism, adjusting the orientation of the welding surface of the irregular part until gear 602 moves to the end of electric slide rail 601, at which point gear 602 stops rotating, thus causing the adaptive clamping mechanism to stop driving the irregular part to rotate.

[0050] When the positioning plate 802 on the right rotates clockwise, the lever on the positioning plate 802 presses against the rotating wheel 803 on the rear C-shaped telescopic frame 604. The rotating wheel 803, under force, causes the C-shaped telescopic frame 604 to elastically contract and slide to the right. The through groove of the C-shaped telescopic frame 604, through the slider 605, drives the corresponding rack 603 to move to the right, and drives the elastic wedge 903 to move. The elastic wedge 903, under the pressure of the tooth groove of the control plate 902, continuously elastically contracts and releases its sliding. The inner wall of the guide rail 701 presses against the outer wall of the slider 605. The wall compression causes the slider 605 to slide along the through groove of the U-shaped telescopic frame 604. The slider 605 drives the rack 603 to move towards the side closer to the gear 602. Then, the slider 605 moves to the corner of the guide rail 701 and passes over it. The slider 605 continues to slide along the guide rail 701, driving the rack 603 to move until the positioning plate 802 is completely in contact with the welding surface of the irregular part. The gear 602 is stopped by the electric slide rail 601, which in turn stops the movement of the irregular part, thus controlling the extension and retraction of the electric lifting frame 801. The extension end extends again, causing the telescopic end of the electric lifting frame 801 to lift the positioning plate 802 again, and causing the telescopic end of the C-shaped telescopic frame 604 to extend again until the positioning plate 802 passes over the irregular part. The toothed groove of the control plate 902 can limit the C-shaped telescopic frame 604 through the elastic wedge 903, thereby stabilizing the moved rack 603, controlling the extension end of the electric lifting frame 801 to stop extending, thereby stopping the movement of the positioning plate 802 and the telescopic end of the C-shaped telescopic frame 604, and then continuing to move via the electric slide The rail 601 controls the movement of the gear 602, which in turn causes the adaptive clamping mechanism to continue moving while holding the irregular part. Subsequently, the gear 602 meshes with the rack 603 on the rear side and rotates under the action of the rack 603. The gear 602 drives the support platform 201 to rotate. The support platform 201 drives the irregular part to rotate through the adaptive clamping mechanism, adjusting the orientation of the welding surface of the irregular part until the gear 602 moves to the end of the electric slide rail 601. The gear 602 then stops rotating, thereby causing the adaptive clamping mechanism to stop driving the irregular part to rotate.

[0051] The positioning plate 802 on the left side can rotate the irregular part on the left side by repeating the above steps. When the two gears 602 move closer to each other and contact the ends of the corresponding electric slide rails 601, the welding surfaces of the two irregular parts are completely aligned. The irregular parts can then be welded using existing welding equipment (the welding equipment is existing technology and is not shown in the figure, so it will not be described in detail here). After welding, the telescopic end of the hydraulic cylinder 302 is retracted. The telescopic end of the hydraulic cylinder 302 drives the push plate 204 to slide in the opposite direction through the connecting frame 303. The elastic slide plate 401 and the bracket 501 gradually release and slide back to their original positions as the push plate 204 slides. The hydraulic oil in the oil storage chamber of the irregular tube 202 gradually flows back to the storage tube 203 through the irregular tube 202. The bracket 501 drives the four C-shaped plates 502 on it to slide and reset, connecting the internal channels of the irregular tube 202 until the elastic slide plate 401 is fully reset. The hydraulic oil in the irregular tube 202 continues to flow back into the storage tube 203. The second compression spring releases, causing the T-shaped shaft 301 to slide in the opposite direction along the top rod 205. The T-shaped shaft 301 drives the insert block 208 to move away from the arc-shaped toothed plate 207. The arc-shaped toothed plate 207 is released, allowing the top plate 206 to move. After all the second compression springs in the same irregular tube 202 are released, the first compression spring gradually releases, causing the top rod 205 to slide and reset. The top rod 205 drives the top plate 206 to move and reset, and through the second compression spring, drives the T-shaped shaft 301 to move and reset. The top plate 206 is no longer in contact with the irregular part. The welded irregular part is removed, and then the gear 602 is reversed via the electric slide rail 601. Gear 602, meshing with the previously adjusted rack 603, drives the support platform 201 to reverse. The support platform 201 then drives the adaptive clamping mechanism to move until gear 602 disengages from rack 603. The support platform 201 rotates to its initial angle, and gear 602 continues to move, resetting the support platform 201. The support platform 201 then resets the adaptive clamping mechanism. The telescopic end of the electric lifting frame 801 retracts and resets, causing the positioning plate 802 to descend and reset, and also causing the telescopic end of the U-shaped telescopic frame 604 to retract and reset. Finally, the operator adjusts the rack 603 on the same side after its movement. When the pedal 1101 is pressed down, it elastically contracts and slides, causing the inclined rod 1102 to move. Under the action of the inclined rod 1102, the insert rod 1001 slides away from the control plate 902. The tension spring gradually contracts, causing the control plate 902 to rise and slide. After the control plate 902 rises, the elastic wedge 903 disengages from the toothed groove of the control plate 902, allowing the C-shaped telescopic frame 604 to move. The C-shaped telescopic frame 604 elastically releases and slides, causing the slider 605 to move in the opposite direction through its through-groove, and also causing the elastic wedge 903 to move. The guide rail 701 presses against the outer wall of the slider 605, causing the slider 605 to slide in the opposite direction along the through-groove of the C-shaped telescopic frame 604, and causing the rack 603 to move away from the gear 602.The slider 605 then slides to the corner of the guide rail 701 and passes over it until the U-shaped telescopic frame 604 resets, thereby resetting the slider 605 and the rack 603, thus completing the reset of the entire device.

[0052] As a further supplement, the greater the offset angle of the welding surface of the irregular part, the greater the rotation angle of the positioning plate 802, which in turn makes the movement stroke of the rack 603 greater, and the earlier the gear 602 contacts the rack 603, which in turn makes the bearing platform 201 drive the irregular part to rotate more through the adaptive clamping mechanism. Thus, the irregular part can be adaptively adjusted through the fine adjustment mechanism to improve the welding accuracy.

[0053] It should be understood that this embodiment is for illustrative purposes only and is not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

Claims

1. A multi-degree of freedom positioning platform for welding of a profiled part, comprising a platform (1), characterized in that: The platform (1) is provided with an adaptive clamping mechanism for adaptively clamping irregular parts, a limiting component for locking the state of the adaptive clamping mechanism after clamping, and a fine-tuning mechanism for adjusting the spatial orientation of the irregular parts to align the welding surfaces. The adaptive clamping mechanism, the limiting component, and the fine-tuning mechanism work together to achieve stable clamping of irregularly shaped parts and precise adjustment of welding posture. The adaptive clamping mechanism includes a support platform (201) symmetrically arranged on the platform (1) and a shaped tube (202) symmetrically installed on the support platform (201). A storage tube (203) is connected to the shaped tube (202). A push plate (204) is slidably installed inside the storage tube (203). A plurality of push rods (205) are arranged and slidably installed inside the shaped tube (202). A first compression spring is provided between the push rod (205) and the inner wall of the shaped tube (202). A top plate (206) is hinged to the end of the push rod (205) outside the shaped tube (202). An arc-shaped toothed plate (207) is fixedly installed on the outer wall of the top plate (206). A plug (208) is provided on one side of the arc-shaped toothed plate (207) for use with it. The adaptive clamping mechanism also includes a T-shaped shaft (301) fixedly installed on one side of the insert (208) and slidably installed inside the push rod (205). A second compression spring is provided between the T-shaped shaft (301) and the push rod (205). The same connecting frame (303) driven by a hydraulic cylinder (302) is fixedly connected to the two push plates (204) on the same side. The connecting frame (303) is slidably connected to the storage tube (203). The adaptive clamping mechanism also includes an elastic slide plate (401) that is slidably mounted inside the shaped tube (202). The limiting component includes a bracket (501) that is elastically slidably installed inside the shaped tube (202), and a plurality of C-shaped plates (502) that slide against the inner wall of the shaped tube (202) are arranged and fixedly installed on the bracket (501). The fine-tuning mechanism includes an electric slide rail (601) symmetrically mounted on the platform (1). A gear (602) fixedly connected to the support platform (201) is movably connected in the electric slide rail (601). A rack (603) symmetrically mounted on the platform (1) is provided on both sides of the gear (602). The rack (603) meshes with the gear (602) after it moves. Two sets of C-shaped telescopic frames (604) are symmetrically provided on the platform (1). A through groove is provided on the C-shaped telescopic frame (604). A slider (605) located in the through groove is fixedly mounted on the rack (603).

2. The multi-DOF positioning platform for welding of a profiled part according to claim 1, characterized in that: The fine-tuning mechanism also includes a guide rail (701) located on one side of the rack (603) and fixedly connected to the platform (1), and the slider (605) is slidably installed in the guide rail (701).

3. The multi-DOF positioning platform for welding of a profiled part according to claim 2, characterized in that: The fine-tuning mechanism also includes an electric lifting frame (801) symmetrically installed on the platform (1). The C-shaped telescopic frame (604) is elastically slidably installed in the telescopic end of the electric lifting frame (801). A positioning plate (802) is elastically rotatably connected to the telescopic end of the electric lifting frame (801). A lever is symmetrically fixedly installed on the positioning plate (802). A rotating wheel (803) that cooperates with the lever is rotatably connected to the telescopic end of the C-shaped telescopic frame (604).

4. The multi-DOF positioning platform for welding of a profiled part according to claim 3, characterized in that: Two sets of mounting brackets (901) are symmetrically fixed on the platform (1). A control plate (902) is slidably connected inside the mounting bracket (901). A tension spring is provided between the control plate (902) and the inner wall of the mounting bracket (901). A groove is provided on the U-shaped telescopic frame (604). An elastic wedge (903) is slidably connected inside the groove. A toothed groove matching the elastic wedge (903) is provided at the bottom of the control plate (902).

5. The multi-DOF positioning platform for welding of a profiled part according to claim 4, characterized in that: A plug rod (1001) is slidably mounted through the mounting bracket (901), and a slot matching the plug rod (1001) is provided on one side of the control board (902).

6. The multi-DOF positioning platform for welding of a profiled part according to claim 5, characterized in that: The mounting bracket (901) has a pedal (1101) on one side. The pedal (1101) is elastically slidably mounted on the platform (1). A diagonal rod (1102) is fixedly mounted on the pedal (1101). The diagonal rod (1102) is slidably connected to the insertion rod (1001) through the pedal.

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