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

Abstract

The invention relates to the technical field of welding equipment, in particular to a multi-degree-of-freedom positioning platform for special-shaped part welding. A multi-degree-of-freedom positioning platform for welding special-shaped parts comprises a platform body and is characterized in that the platform body is provided with a self-adaptive clamping mechanism used for clamping the special-shaped parts in a self-adaptive mode, a limiting assembly used for locking the state of the self-adaptive clamping mechanism after clamping and a fine adjustment mechanism used for adjusting the spatial posture of the special-shaped parts so that welding faces can be aligned. By arranging the self-adaptive clamping mechanism, when a push plate slides, hydraulic oil in a storage pipe is pressed into a special-shaped pipe, an ejector rod and an ejector plate at the end of the ejector rod are pushed to clamp a special-shaped part, the ejector rod can adjust the extending length in a self-adaptive mode according to the outline of the special-shaped part, and therefore the self-adaptive clamping mechanism can clamp the special-shaped parts of different shapes; by arranging the limiting assembly, the top plate can be limited, the stability of clamping the special-shaped parts by the top plate is improved, and by arranging the fine adjustment mechanism, the welding surfaces of the two special-shaped parts can be aligned.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of welding equipment, in particular to a multi-degree-of-freedom positioning platform for welding special-shaped parts. BACKGROUND

[0002] The welding platform is an indispensable key auxiliary tool for welding operation, and is known for its stability and reliability. Its core function is to provide a stable working surface, which can adjust the height and angle according to the requirements to ensure accurate welding.

[0003] In order to ensure the accuracy of welding, the workpiece needs to be clamped before welding. The current welding platform can only clamp workpieces with fixed shapes. For various special-shaped parts, the clamping equipment needs to be adjusted according to the shape of the special-shaped part, and the welding surface of the special-shaped part is difficult to align. SUMMARY

[0004] In order to overcome the shortcomings of the prior art, the present application provides a multi-degree-of-freedom positioning platform for welding special-shaped parts.

[0005] The technical scheme is: a multi-degree-of-freedom positioning platform for welding special-shaped parts, comprising a platform, an adaptive clamping mechanism for adaptively clamping special-shaped parts, a limiting component for locking the state of the adaptive clamping mechanism after clamping, and a fine adjustment mechanism for adjusting the spatial attitude of the special-shaped part to align the welding surface; wherein the adaptive clamping mechanism, the limiting component and the fine adjustment mechanism cooperate to realize stable clamping of the special-shaped part and accurate adjustment of the welding position. The adaptive clamping mechanism comprises a bearing table symmetrically arranged on the platform and a special-shaped pipe symmetrically mounted on the bearing table, a storage pipe is communicated on the special-shaped pipe, a push plate is slidingly installed in the storage pipe, a plurality of jacks are slidingly installed in the special-shaped pipe, a first compression spring is arranged between the jack and the inner wall of the special-shaped pipe, the end of the jack outside the special-shaped pipe is hinged with a top plate, an arc-shaped tooth plate is fixedly installed on the outer wall of the top plate, and a plug block cooperating with the arc-shaped tooth plate is arranged on one side of the arc-shaped tooth plate.

[0006] Further, the adaptive clamping mechanism further comprises a T-shaped shaft fixedly installed on one side of the plug block and slidingly installed in the jack, a second compression spring is arranged between the T-shaped shaft and the jack, the same side of the two push plates is fixedly connected with the same connecting frame driven by a hydraulic cylinder, and the connecting frame is in through sliding connection with the storage pipe.

[0007] Further, the adaptive clamping mechanism further comprises an elastic sliding plate slidingly installed in the special-shaped pipe.

[0008] Further illustrate, the limiting assembly comprises a bracket elastically and slidably arranged in the special-shaped tube, and a plurality of C-shaped plates are fixedly arranged on the bracket and slidably arranged on the inner wall of the special-shaped tube.

[0009] Further illustrate, the fine adjustment mechanism comprises electric sliding rails symmetrically arranged on the platform, gears movably connected in the electric sliding rails and fixedly connected with the bearing table, racks movably arranged on the platform and symmetrically arranged on the two sides of the gears, and two groups of U-shaped telescopic frames symmetrically arranged on the platform and provided with through grooves, and sliding blocks fixedly arranged on the racks and located in the through grooves.

[0010] Further illustrate, the fine adjustment mechanism further comprises guide rails arranged on one side of the racks and fixedly connected with the platform, and the sliding blocks are slidably arranged in the guide rails.

[0011] Further illustrate, the fine adjustment mechanism further comprises electric lifting frames symmetrically arranged on the platform, the U-shaped telescopic frames are elastically and slidably arranged in the telescopic ends of the electric lifting frames, positioning plates elastically and rotatably connected with the telescopic ends of the electric lifting frames, lever rods symmetrically fixedly arranged on the positioning plates, and rotating wheels rotatably connected with the telescopic ends of the U-shaped telescopic frames and matched with the lever rods.

[0012] Further illustrate, two groups of mounting frames are symmetrically fixedly arranged on the platform, control plates are slidably connected in the mounting frames, tension springs are arranged between the control plates and the inner walls of the mounting frames, recesses are arranged on the U-shaped telescopic frames, elastic wedge blocks are slidably connected in the recesses, and tooth grooves matched with the elastic wedge blocks are arranged on the bottom of the control plates.

[0013] Further illustrate, plug rods are slidably arranged through the mounting frames, and plug grooves matched with the plug rods are arranged on one side of the control plates.

[0014] Further illustrate, a pedal is arranged on one side of the mounting frame, the pedal is elastically and slidably arranged on the platform, an inclined rod is fixedly arranged on the pedal, and the inclined rod is slidably connected with the plug rod in a penetrating mode.

[0015] Beneficial effects: 1、The self-adaptive clamping mechanism can clamp different-shaped special-shaped parts, the limiting assembly can limit the top plate, the stability of clamping the special-shaped part by the top plate is improved, and the fine adjustment mechanism can align the welding surfaces of two special-shaped parts.

[0016] 2、The elastic slide plate is arranged, when all the top plates complete clamping of the special-shaped part and the plug block is engaged with the arc-shaped toothed plate, the excess hydraulic oil can be temporarily stored in the oil storage cavity of the special-shaped pipe, the C-shaped plate is arranged, the internal passage of the special-shaped pipe can be blocked, and the stability of clamping the special-shaped part by the top plate is further improved.

[0017] 3、The positioning plate is arranged, different rack movements can be controlled according to the offset direction of the welding surface of the special-shaped part, the movement stroke of the rack can be adjusted according to the offset degree of the welding surface of the special-shaped part, the meshing stroke of the gear and the rack is changed, and then the welding surfaces of the two special-shaped parts can be aligned. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the overall structure schematic diagram of the application; Figure 2 It is the structure schematic diagram of the adaptive clamping mechanism of the application; Figure 3 It is the installation schematic diagram of the ejector rod of the application; Figure 4 It is the installation schematic diagram of the plug block of the application; Figure 5 It is the installation schematic diagram of the top plate of the application; Figure 6 It is the installation schematic diagram of the connecting frame of the application; Figure 7 It is the structure schematic diagram of the fine adjustment mechanism of the application; Figure 8 It is the structure schematic diagram of the C-shaped telescopic frame of the application; Figure 9 It is the installation schematic diagram of the gear of the application; Figure 10 It is the installation schematic diagram of the guide rail of the application; Figure 11 It is the installation schematic diagram of the control plate of the application; Figure 12 It is the installation schematic diagram of the inclined rod of the application.

[0019] 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

[0020] 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.

[0021] Example 1 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. 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.

[0022] like Figures 3-6As shown, the adaptive clamping mechanism further comprises a T-shaped shaft 301 fixedly installed on one side of the plug 208 and slidingly penetrating the top rod 205, a second compression spring is arranged 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, and a gap is formed between the T-shaped shaft 301 and the inner wall of the special-shaped pipe 202. The two push plates 204 on the same side are fixedly connected with the same connecting frame 303 driven by a hydraulic cylinder 302, the hydraulic cylinder 302 is installed on the bearing table 201 through a support plate, and the connecting frame 303 is in penetrating sliding connection with the storage pipe 203.

[0023] As shown in Figure 3 As shown, the adaptive clamping mechanism further comprises an elastic sliding plate 401 slidingly installed in the special-shaped pipe 202, and the elastic sliding plate 401 divides part of the space in the special-shaped pipe 202 into an oil storage cavity.

[0024] As shown in Figure 3 As shown, the limiting assembly comprises a support 501 elastically and slidingly installed in the special-shaped pipe 202, four C-shaped plates 502 slidingly abutting the inner wall of the special-shaped pipe 202 are fixedly installed on the support 501, and the C-shaped plates 502 can block the internal passage of the special-shaped pipe 202 after sliding, so that the hydraulic oil of the push top rod 205 and the T-shaped shaft 301 no longer flows.

[0025] At the beginning, the two bearing tables 201 are away from each other, the push plate 204 is located in the storage tube 203 away from the side of the special-shaped tube 202 and abuts against the inner wall of the storage tube 203, the first compression spring and the second compression spring are in the released state, first, the two special-shaped parts are respectively placed on the two bearing tables 201, and the welding surfaces of the two special-shaped parts are opposite, the extension end of the hydraulic cylinder 302 is extended, 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 special-shaped tube 202 by the push plate 204, the hydraulic oil in the special-shaped tube 202 exerts a pushing force on the top rod 205, the T-shaped shaft 301 and the elastic slide plate 401, because the elastic force of the elastic slide 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, at this time, each top rod 205 independently slides out of the special-shaped tube 202 under the action of the hydraulic oil, and drives the top plate 206 on it to move, and drives the plug 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 special-shaped part, the top plate 206 is extruded by the outer wall of the special-shaped part and freely rotates to fit the outer wall of the special-shaped part, and exerts a counter force on the top rod 205, so that the top rod 205 stops moving until the other top plates 206 are all fitted with the outer wall of the special-shaped part, at this time, all the top rods 205 stop moving, the push plate 204 continues to move, so that the hydraulic oil increases the pushing force on the T-shaped shaft 301, the T-shaped shaft 301 slides along the top rod 205 and drives the plug block 208 to move under the action of the force, the second compression spring is contracted under the action of the force, the plug block 208 is engaged with the arc-shaped tooth plate 207 after moving, and limits the top plate 206, so that the top plate 206 cannot rotate, thereby improving the stability of the top plate 206 clamping the special-shaped part, preventing the special-shaped part from shaking and misplacing, at this time, the arc-shaped tooth plate 207 stops the movement of the T-shaped shaft 301 through the plug block 208, the push plate 204 continues to move, so that the hydraulic oil increases the pushing force on the elastic slide plate 401, the elastic slide plate 401 elastically contracts and slides under the action of the force, so that the hydraulic oil in the special-shaped tube 202 enters the oil storage cavity of the special-shaped tube 202, then the push plate 204 contacts and extrudes the bracket 501, the bracket 501 elastically contracts and slides under the action of the force and drives 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 bracket 501, each C-shaped plate 502 respectively blocks the internal passage of the special-shaped tube 202, so that the hydraulic oil pushing the top rod 205 and the T-shaped shaft 301 no longer flows, thereby making the top plate 206 keep stable clamping the special-shaped part, further improving the stability of the top plate 206 clamping the special-shaped part.

[0026] 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.

[0027] Example 2 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] like Figure 11 and Figure 12As 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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 irregularly shaped parts, 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 posture of the irregular 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 irregular 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). Multiple 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.

2. The multi-degree-of-freedom positioning platform for welding irregularly shaped parts according to claim 1, characterized in that: 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 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).

3. The multi-degree-of-freedom positioning platform for welding irregularly shaped parts according to claim 2, characterized in that: The adaptive clamping mechanism also includes an elastic slide plate (401) that is slidably mounted inside the shaped tube (202).

4. The multi-degree-of-freedom positioning platform for welding irregularly shaped parts according to claim 3, characterized in that: 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).

5. A multi-degree-of-freedom positioning platform for welding irregularly shaped parts according to claim 1, characterized in that: 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).

6. The multi-degree-of-freedom positioning platform for welding irregularly shaped parts according to claim 5, 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).

7. A multi-degree-of-freedom positioning platform for welding irregularly shaped parts according to claim 6, 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).

8. A multi-degree-of-freedom positioning platform for welding irregularly shaped parts according to claim 7, 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).

9. A multi-degree-of-freedom positioning platform for welding irregularly shaped parts according to claim 8, 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).

10. A multi-degree-of-freedom positioning platform for welding irregularly shaped parts according to claim 9, 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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