Clamping assembly for machining and welding of vehicle parts
Through preheating the door welding clamping assembly and the clamping structure driven by servo motor, the problem of deformation of the clamping assembly at high temperature is solved, and the positioning accuracy and stability of the welding process are improved.
Patent Information
- Application Number
- CN202411470739.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-21
- Publication Date
- 2024-12-13
AI Technical Summary
The existing clamping components for door welding are prone to deform at high temperatures, resulting in the positioning accuracy during welding and the inability to effectively fix the workpiece.
A clamping assembly including a support frame, a temperature sensor and a preheating assembly is designed to preheat the clamping assembly through a hot air gun to reduce the thermal stress caused by the sudden temperature rise, and clamping is achieved using a servo motor and a multi-stage electric telescopic rod. Stable fixation of the components.
It effectively prevents deformation of the clamping components due to temperature changes during welding, improves positioning accuracy and clamping stability during welding, and ensures welding quality.
Smart Images
Figure CN119115377A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of clamping components, in particular to a clamping component for machining and welding vehicle parts. Background Art
[0002] Vehicle parts processing and welding equipment is a device and system used to weld various parts during automobile production and maintenance. Parts processing and welding clamping assemblies are tools specially designed to fix and support welded parts. Their main purpose is to ensure the accuracy and stability of the parts position during the welding process, thereby improving welding quality and efficiency.
[0003] In the process of welding car doors, as one of the vehicle parts, car doors are large in size and take a long time to weld. In addition, car doors are generally made of steel and require a higher welding temperature (about 1400-1600°C). The existing clamping components for welding car doors are mostly made of low-carbon steel materials. In the process of welding car doors, the clamping components are not heat-treated in advance, resulting in sudden high temperatures. The local high temperature will cause the low-carbon steel material to expand, and it will shrink when cooling after welding, causing deformation, which will easily lead to the clamping mechanism being unable to effectively fix the workpiece, affecting the positioning accuracy during the welding process.
[0004] Therefore we propose a clamping assembly for machining and welding of vehicle parts, so as to solve the above-mentioned problems. Summary of the invention
[0005] The purpose of the present invention is to provide a clamping assembly for vehicle parts processing and welding, so as to solve the problem that the clamping assembly is easily deformed when clamping automobile parts for welding due to lack of preheating in advance as mentioned in the background art.
[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a clamping assembly for processing and welding vehicle parts, comprising a support frame and a temperature sensor, a moving assembly is arranged on the outer surface of the support frame, two clamping assemblies are arranged at the bottom of the moving assembly, a preheating assembly is arranged between the opposite outer surfaces of the support frame, the preheating assembly comprises two bearing rods, two limit rods are fixed between the outer surfaces of the two bearing rods, a multi-stage electric telescopic rod is arranged on the outer surface of one of the bearing rods, a load-bearing frame is fixed at one end of the multi-stage electric telescopic rod, a connecting shaft is movably embedded in the inner wall of one side of the load-bearing frame, a worm gear is fixedly sleeved near the center of the outer surface of the connecting shaft, an installation frame is fixed at one end of the connecting shaft, a hot air gun is arranged on the inner wall of the installation frame, a supporting shaft is fixed on the outer surface of the installation frame, a reinforcing frame is fixedly installed near the bottom of the inner wall of the load-bearing frame, a driving motor is fixedly installed on the outer surface of the reinforcing frame by screws, and a worm is fixedly connected to the output shaft of the driving motor.
[0007] Preferably, the two ends of the two limit rods are movably inserted into the opposite outer parts of the load-bearing frame, one end of the support shaft is movably embedded in the inner wall of the load-bearing frame, the two ends of the worm are movably inserted into the opposite outer parts of the reinforcing frame, and the outer surface of the worm is meshingly connected with the outer surface of the worm wheel.
[0008] Preferably, the moving component includes a mounting rod and two sliding rods, the outer surface of the mounting rod is fixedly connected to the outer surface of the support frame, and two connecting blocks are fixed to the top of the mounting rod, and the outer surface of one of the connecting blocks is fixedly installed with a forward and reverse motor by screws, and the output shaft of the forward and reverse motor is fixedly connected with a screw rod.
[0009] Preferably, both ends of the screw rod are movably connected to the outside of the two connecting blocks, the outer surface of the screw rod is connected to the internal thread of one of the sliding rods, the bottom end of one of the sliding rods is movably connected to the outside of the mounting rod, the temperature sensor is fixedly connected to the outer surface of one of the sliding rods by screws, and four positioning frames are fixed to the bottom of the mounting rod.
[0010] Preferably, every two adjacent positioning frames form a group, and two limiting tubes are fixed between the outer surfaces of each group of positioning frames. Every two adjacent limiting tubes form a group, and a movable frame is slidably sleeved between the outer surfaces of each group of limiting tubes, and the outer surfaces of the two movable frames are respectively fixedly connected to the outer surfaces of the two sliding rods.
[0011] Preferably, the outer surfaces of the two sliding rods are fixed with anti-compression frames, the interiors of the two anti-compression frames are fixed with tooth rows, a rotating shaft is fixed near the center of the bottom of the mounting rod, a gear is movably sleeved on the outer surface of the rotating shaft, and the outer surfaces of the two tooth rows are meshed with the outer surfaces of the gears.
[0012] Preferably, a clamping assembly is provided on the outer surfaces of the two slide bars near the bottom, and the two clamping assemblies each include a connecting plate, and one side outer surface of the two connecting plates is fixedly connected to the outer surfaces of the two slide bars respectively.
[0013] Preferably, a support block is fixed near the bottom of the outer surface of the other side of the two connecting plates, a servo motor is fixedly installed on the top of the two connecting plates by screws, the output shafts of the two servo motors are fixedly connected with a threaded tube, and the two ends of the two threaded tubes are movably penetrated to the opposite outsides of the connecting plates.
[0014] Preferably, the outer surfaces of the two threaded tubes are threadedly sleeved with clamping blocks, the outer surfaces of the two clamping blocks are slidably connected to the inner walls of the two connecting plates respectively, and the outer surfaces of the two connecting plates are fixed with mounting frames.
[0015] Preferably, a plurality of springs are arranged at the bottom of the two mounting frames, and the plurality of springs are divided into two groups, the top ends of the two groups of springs are respectively fixedly connected to the bottoms of the two mounting frames, and the bottom ends of the two groups of springs are respectively fixedly connected to the tops of the two clamping blocks.
[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. In the process of using the clamping assembly to clamp the car door and weld it, in order to prevent the influence of high temperature on the car door clamping assembly, start the hot air gun, align the output end of the hot air gun with the direction of the clamping assembly, and then move the hot air gun to preheat the clamping assembly, thereby reducing the deformation of the clamping assembly caused by the thermal stress caused by the sudden temperature rise during the welding process, thereby solving the problem in the prior art that the clamping assembly is easily deformed due to the lack of advance preheating when the clamping assembly clamps the automobile parts for welding.
[0017] 2. When the door of a car needs to be clamped and welded, first place the door to be welded between two support blocks, then move the two support blocks toward each other until the opposite outer surfaces of the door are tightly attached to the inner walls of the two support blocks, thereby clamping and fixing the door. Then start the two servo motors to drive the two clamps to move to the outer surfaces of the door respectively, so that the door can be further clamped and fixed, effectively preventing the door from being displaced by external influences during the clamping and welding process.
[0018] 3. When the multiple clamps move downward, the multiple compressed springs will extend toward the support blocks respectively, thereby applying a downward force to the clamps, further improving the stability of the clamps. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a front perspective view of a clamping assembly for machining and welding vehicle parts of the present invention; Figure 2 It is a three-dimensional diagram of a moving component part of a clamping assembly for machining and welding vehicle parts of the present invention; Figure 3 This is a three-dimensional view of a limiting tube portion of a clamping assembly for machining and welding vehicle parts of the present invention; Figure 4 A sectional perspective view of a gear portion of a clamping assembly for machining and welding vehicle parts according to the present invention; Figure 5 A three-dimensional diagram of a clamping block portion of a clamping assembly for machining and welding vehicle parts according to the present invention; Figure 6 A partially cutaway perspective view of a connecting plate of a clamping assembly for machining and welding vehicle parts according to the present invention; Figure 7 It is a three-dimensional view of the bearing rod part of a clamping assembly for processing and welding vehicle parts of the present invention; Figure 8 A cross-sectional perspective view of a load-bearing frame portion of a clamping assembly for machining and welding vehicle parts of the present invention; Fig. 9 The present invention is a perspective view of the structure of a compression frame of a clamping assembly for machining and welding vehicle parts.
[0020] In the figure: 1. Support frame; 2. Moving assembly; 201. Mounting rod; 202. Connecting block; 203. Forward and reverse motor; 204. Screw rod; 205. Sliding rod; 206. Positioning frame; 207. Positioning tube; 208. Compression frame; 209. Gear row; 210. Rotating shaft; 211. Gear; 212. Moving frame; 3. Clamping assembly; 301. Connecting plate; 302. Supporting block; 303. Servo motor; 304 , threaded pipe; 305, clamping block; 306, mounting frame; 307, spring; 4, preheating assembly; 401, load-bearing rod; 402, limit rod; 403, multi-stage electric telescopic rod; 404, load-bearing frame; 405, connecting shaft; 406, worm gear; 407, mounting frame; 408, hot air gun; 409, supporting shaft; 410, reinforcement frame; 411, driving motor; 412, worm; 5, temperature sensor. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0022] See also Figure 1-9The present invention provides a technical solution: a clamping assembly for processing and welding vehicle parts, including a support frame 1 and a temperature sensor 5, a moving assembly 2 is arranged on the outer surface of the support frame 1, two clamping assemblies 3 are arranged at the bottom of the moving assembly 2, a preheating assembly 4 is arranged between the opposite outer surfaces of the support frame 1, and the preheating assembly 4 includes two bearing rods 401, two limit rods 402 are fixed between the outer surfaces of the two bearing rods 401, a multi-stage electric telescopic rod 403 is arranged on the outer surface of one of the bearing rods 401, a load-bearing frame 404 is fixed at one end of the multi-stage electric telescopic rod 403, a connecting shaft 405 is movably embedded in the inner wall of one side of the load-bearing frame 404, and a worm gear 406 is fixedly sleeved near the center of the outer surface of the connecting shaft 405, and a connecting rod 406 is fixedly sleeved near the center of the outer surface of the connecting shaft 405. A mounting frame 407 is fixed to one end of the connecting shaft 405, a hot air gun 408 is arranged on the inner wall of the mounting frame 407, a supporting shaft 409 is fixed to the outer surface of the mounting frame 407, a reinforcing frame 410 is fixedly installed on the inner wall of the load-bearing frame 404 near the bottom, a driving motor 411 is fixedly installed on the outer surface of the reinforcing frame 410 by screws, a worm 412 is fixedly connected to the output shaft of the driving motor 411, two ends of the two limit rods 402 are respectively movable to penetrate to the opposite outside of the load-bearing frame 404, one end of the supporting shaft 409 is movably embedded in the inner wall of the load-bearing frame 404, two ends of the worm 412 are respectively movable to penetrate to the opposite outside of the reinforcing frame 410, the outer surface of the worm 412 is meshedly connected with the outer surface of the worm wheel 406, and the moving group Component 2 includes a mounting rod 201 and two sliding rods 205. The outer surface of the mounting rod 201 is fixedly connected to the outer surface of the support frame 1. Two connecting blocks 202 are fixed to the top of the mounting rod 201. The outer surface of one of the connecting blocks 202 is fixedly installed with a forward and reverse motor 203 by screws. The output shaft of the forward and reverse motor 203 is fixedly connected with a screw rod 204. The two ends of the screw rod 204 are respectively movably penetrated to the outside of the two connecting blocks 202. The outer surface of the screw rod 204 is connected to the internal thread of one of the sliding rods 205. The bottom end of one of the sliding rods 205 is movably penetrated to the outside of the mounting rod 201. The temperature sensor 5 is fixedly connected to the outer surface of one of the sliding rods 205 by screws. The bottom of the mounting rod 201 is fixed. There are four positioning frames 206, and each adjacent two positioning frames 206 form a group. Two limiting tubes 207 are fixed between the outer surfaces of each group of positioning frames 206. Each adjacent two limiting tubes 207 form a group. A moving frame 212 is slidably sleeved between the outer surfaces of each group of limiting tubes 207. The outer surfaces of the two moving frames 212 are respectively fixedly connected to the outer surfaces of the two sliding rods 205. The outer surfaces of the two sliding rods 205 are fixed with anti-pressure frames 208. The insides of the two anti-pressure frames 208 are fixed with tooth rows 209. A rotating shaft 210 is fixed near the center of the bottom of the mounting rod 201. The outer surface of the rotating shaft 210 is movably sleeved with a gear 211. The outer surfaces of the two tooth rows 209 are meshed and connected with the outer surfaces of the gear 211.
[0023] In this embodiment, during the automobile manufacturing process, when the door in the automobile needs to be clamped and welded, the door to be welded is first placed between the two support blocks 302, and then the forward and reverse motors 203 are started to drive the screw rod 204 to rotate, thereby driving the sliding rod 205 connected thereto to move along the screw rod 204, thereby driving the moving frame 212 connected thereto to move along the two limiting tubes 207, thereby driving the anti-pressure frame 208 connected thereto to move, and then driving the gear row 209 fixedly connected to the anti-pressure frame 208 to move in the direction of the rotating shaft 210, thereby causing the gear 211 to rotate, and the rotation of the gear 211 drives the other gear row 209 to move forward, wherein, as Fig. 9 As shown, the inner wall of one side of the compression frame 208 is solid, and the inner wall of the other side is connected, the purpose of which is to facilitate the corresponding tooth row 209 to move forward, and the movement of the other tooth row 209 drives the two slide bars 205 to move toward each other, and then drives the two support blocks 302 to move toward each other, until the opposite outer surfaces of the car door are tightly attached to the inner walls of the two support blocks 302, respectively, so that the car door is clamped and fixed. In the process of clamping and fixing the car door, the welding device is in the process of welding the car door. Since the car door is made of steel, the welding temperature is about 1400-1600°C. In order to prevent the influence of high temperature on the car door clamping assembly, when the car door is clamped, the drive motor 411 is started to drive the worm 412 to rotate, and then drive the worm wheel 406 to rotate, so that the installation frame 407 rotates, wherein, as shown in Figure 8As shown, the support shaft 409 supports the installation frame 407, and the rotation of the installation frame 407 drives the hot air gun 408 to rotate. When the air outlet of the hot air gun 408 is aligned with the position of the vehicle door and the two clamping components 3, the hot air gun 408 is started, wherein the hot air gun 408 inhales air through the blower, and the rotation of the blower generates negative pressure, so that the surrounding air flows into the interior of the device, and the inhaled air flows through the heat exchanger to increase the temperature of the air. The heated air is sent out through the blower and flows to the space that needs to be heated. In this process, the hot air blower adjusts the wind speed according to the set temperature and working mode to keep the temperature stable. At the same time, the multi-stage electric telescopic rod 403 is started to extend or shorten it, driving the load-bearing frame 404 to move horizontally along the direction of the two limit rods 402, thereby the vehicle door and the two clamping components 3 are heated. The component 3 is heated by hot air to achieve preheating of the two clamping components 3. When the temperature sensor 5 detects that the temperature of the two clamping components 3 has reached the required temperature, the hot air gun 408 can be turned off through an external control system. The temperature sensor 5 uses the characteristic that the resistance of metal changes when the temperature changes. In the case of a known material's resistance-temperature characteristic curve, the corresponding temperature can be calculated by measuring the resistance value. By preheating the car door and the two clamping components 3 in advance, the clamping mechanism reaches a certain preheating temperature before welding, thereby reducing the deformation of the clamping component 3 caused by the thermal stress caused by the sudden temperature rise during the welding process, thereby solving the problem in the prior art that the clamping component is easily deformed due to the lack of advance preheating when the clamping component clamps the automobile parts for welding.
[0024] Embodiment 2: Figure 1-Figure 3 and Figure 5-Figure 6 As shown, the outer surfaces of the two slide bars 205 are provided with a clamping assembly 3 near the bottom, and the two clamping assemblies 3 include a connecting plate 301. The outer surfaces of one side of the two connecting plates 301 are respectively fixedly connected to the outer surfaces of the two slide bars 205. The outer surfaces of the other sides of the two connecting plates 301 are respectively fixed with a support block 302 near the bottom. The tops of the two connecting plates 301 are fixedly installed with servo motors 303 by screws. The output shafts of the two servo motors 303 are fixedly connected with threaded tubes 304. The two ends of the two threaded tubes 304 are respectively movably penetrated. To the opposite outside of the connecting plate 301, the outer surfaces of the two threaded tubes 304 are threadedly sleeved with clamping blocks 305, and the outer surfaces of the two clamping blocks 305 are respectively slidably connected to the inner walls of the two connecting plates 301, and the outer surfaces of the two connecting plates 301 are fixed with mounting frames 306, and the bottoms of the two mounting frames 306 are respectively provided with multiple springs 307, and the multiple springs 307 are divided into two groups, and the top ends of the two groups of springs 307 are respectively fixedly connected to the bottoms of the two mounting frames 306, and the bottom ends of the two groups of springs 307 are respectively fixedly connected to the tops of the two clamping blocks 305.
[0025] In this embodiment, in order to further fix the door, the two servo motors 303 are started to drive the two threaded tubes 304 to rotate, thereby driving the two clamping blocks 305 to move toward the two supporting blocks 302 respectively. Figure 6 As shown, the internal cross-section of the connecting plate 301 is cross-shaped, and its purpose is to limit the clamping block 305. When the two clamping blocks 305 are respectively moved to the outer surface of the vehicle door, the vehicle door can be further clamped and fixed, effectively preventing the vehicle door from being displaced by external influences during the clamping and welding process. In addition, when multiple clamping blocks 305 move downward, multiple compressed springs 307 will be extended in the direction of the supporting block 302, thereby giving the clamping block 305 a downward force, further improving the stability of the clamping block 305.
[0026] The method of use and working principle of the device: During the automobile manufacturing process, when the door of the automobile needs to be clamped and welded, the door to be welded is first placed between the two support blocks 302, and then the forward and reverse motors 203 are started to drive the screw rod 204 to rotate, thereby driving the sliding rod 205 connected thereto to move along the screw rod 204, thereby driving the moving frame 212 connected thereto to move along the two limiting tubes 207, thereby driving the anti-pressure frame 208 connected thereto to move, and then driving the gear row 209 fixedly connected to the anti-pressure frame 208 to move in the direction of the rotating shaft 210, thereby causing the gear 211 to rotate, and the rotation of the gear 211 drives the other gear row 209 to move forward, thereby driving the two support blocks 302 to rotate. The support blocks 302 move toward each other until the opposite outer surfaces of the vehicle door are tightly attached to the inner walls of the two support blocks 302, thereby clamping and fixing the vehicle door. In the process of clamping and fixing the vehicle door, in order to further fix the vehicle door, the two servo motors 303 are started to drive the two threaded tubes 304 to rotate, thereby driving the two clamping blocks 305 to move toward the directions of the two support blocks 302, respectively. When the two clamping blocks 305 move to the outer surfaces of the vehicle door, respectively, the vehicle door can be further clamped and fixed. In addition, when multiple clamping blocks 305 move downward, multiple compressed springs 307 will be caused to extend toward the directions of the support blocks 302, respectively, thereby giving the clamping blocks 305 a downward force, further In order to improve the stability of the clamping block 305, during the welding process of the door, since the door is made of steel, the welding temperature is about 1400-1600°C. In order to prevent the high temperature from affecting the door clamping assembly, after the door is clamped, the drive motor 411 is started to drive the worm 412 to rotate, thereby driving the worm wheel 406 to rotate, so that the installation frame 407 rotates, and the rotation of the installation frame 407 drives the hot air gun 408 to rotate. When the air outlet of the hot air gun 408 is aligned with the door and the two clamping assemblies 3, the hot air gun 408 is started, and the multi-stage electric telescopic rod 403 is started at the same time to extend or shorten it, driving the load-bearing frame 404 to move horizontally along the direction of the two limit rods 402. Move, thereby heating the car door and the two clamping components 3 with hot air to achieve preheating of the two clamping components 3. When the temperature sensor 5 detects that the temperature of the two clamping components 3 reaches the required temperature, the hot air gun 408 can be turned off through the external control system. By preheating the car door and the two clamping components 3 in advance, the clamping mechanism reaches a certain preheating temperature before welding, thereby reducing the deformation of the clamping components 3 caused by the thermal stress caused by the sudden temperature rise during the welding process. Among them, the external control system is electrically connected to the forward and reverse motors 203, the servo motor 303, the multi-stage electric telescopic rod 403, the hot air gun 408, the drive motor 411 and the temperature sensor 5.
[0027] The wiring diagram of the forward and reverse motor 203, the servo motor 303, the multi-stage electric telescopic rod 403, the hot air gun 408, the drive motor 411 and the temperature sensor 5 in the present invention is common knowledge in the art, and its working principle is a well-known technology. The model is selected according to the actual use. Therefore, the control method and wiring arrangement of the forward and reverse motor 203, the servo motor 303, the multi-stage electric telescopic rod 403, the hot air gun 408, the drive motor 411 and the temperature sensor 5 are no longer explained in detail.
[0028] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A clamping assembly for machining and welding vehicle parts, comprising a support frame (1) and a temperature sensor (5), a moving assembly (2) being arranged on the outer surface of the support frame (1), and two clamping assemblies (3) being arranged at the bottom of the moving assembly (2); Features: A preheating assembly (4) is arranged between opposite outer surfaces of the support frame (1), the preheating assembly (4) comprising two bearing rods (401), two limiting rods (402) being fixed between the outer surfaces of the two bearing rods (401), a multi-stage electric telescopic rod (403) being arranged on the outer surface of one of the bearing rods (401), a load-bearing frame (404) being fixed at one end of the multi-stage electric telescopic rod (403), a connecting shaft (405) being movably embedded in an inner wall of one side of the load-bearing frame (404), and an outer surface of the connecting shaft (405) A worm gear (406) is fixedly sleeved near the center, a mounting frame (407) is fixedly mounted on one end of the connecting shaft (405), a hot air gun (408) is arranged on the inner wall of the mounting frame (407), a supporting shaft (409) is fixedly mounted on the outer surface of the mounting frame (407), a reinforcing frame (410) is fixedly mounted on the inner wall of the load-bearing frame (404) near the bottom, a driving motor (411) is fixedly mounted on the outer surface of the reinforcing frame (410) by means of screws, and a worm (412) is fixedly connected to the output shaft of the driving motor (411).
2. The clamping assembly for machining and welding vehicle parts according to claim 1, characterized in that: The two ends of the two limit rods (402) are respectively movable and penetrate to the opposite outer sides of the load-bearing frame (404), one end of the support shaft (409) is movably embedded in the inner wall of the load-bearing frame (404), and the two ends of the worm (412) are respectively movable and penetrate to the opposite outer sides of the reinforcing frame (410), and the outer surface of the worm (412) is meshingly connected with the outer surface of the worm wheel (406).
3. The clamping assembly for machining and welding vehicle parts according to claim 2, characterized in that: The moving assembly (2) comprises a mounting rod (201) and two sliding rods (205); the outer surface of the mounting rod (201) is fixedly connected to the outer surface of the support frame (1); two connecting blocks (202) are fixedly connected to the top of the mounting rod (201); a forward and reverse motor (203) is fixedly mounted on the outer surface of one of the connecting blocks (202) by means of screws; and the output shaft of the forward and reverse motor (203) is fixedly connected to a lead screw (204).
4. The clamping assembly for machining and welding vehicle parts according to claim 3, characterized in that: The two ends of the screw rod (204) are respectively movably connected to the outside of the two connecting blocks (202); the outer surface of the screw rod (204) is connected to the internal thread of one of the sliding rods (205); the bottom end of one of the sliding rods (205) is movably connected to the outside of the mounting rod (201); the temperature sensor (5) is fixedly connected to the outer surface of one of the sliding rods (205) by screws; and four positioning brackets (206) are fixed to the bottom of the mounting rod (201).
5. The clamping assembly for machining and welding vehicle parts according to claim 4, characterized in that: Every two adjacent positioning frames (206) form a group, and two limiting tubes (207) are fixed between the outer surfaces of each group of positioning frames (206). Every two adjacent limiting tubes (207) form a group, and a moving frame (212) is slidably sleeved between the outer surfaces of each group of limiting tubes (207), and the outer surfaces of the two moving frames (212) are fixedly connected to the outer surfaces of the two sliding rods (205) respectively.
6. The clamping assembly for machining and welding vehicle parts according to claim 5, characterized in that: The outer surfaces of the two sliding rods (205) are fixed with anti-compression frames (208), the interiors of the two anti-compression frames (208) are fixed with tooth rows (209), a rotating shaft (210) is fixed near the center of the bottom of the mounting rod (201), a gear (211) is movably sleeved on the outer surface of the rotating shaft (210), and the outer surfaces of the two tooth rows (209) are meshingly connected with the outer surface of the gear (211).
7. The clamping assembly for machining and welding vehicle parts according to claim 6, characterized in that: A clamping assembly (3) is provided on the outer surface of the two slide bars (205) near the bottom, and the two clamping assemblies (3) each include a connecting plate (301), and one side outer surface of the two connecting plates (301) is fixedly connected to the outer surfaces of the two slide bars (205), respectively.
8. The clamping assembly for machining and welding vehicle parts according to claim 7, characterized in that: A support block (302) is fixed to the outer surface of the other side of the two connecting plates (301) near the bottom, a servo motor (303) is fixedly mounted on the top of the two connecting plates (301) by means of screws, the output shafts of the two servo motors (303) are fixedly connected to a threaded tube (304), and both ends of the two threaded tubes (304) are movably penetrated to opposite exteriors of the connecting plates (301).
9. The clamping assembly for machining and welding vehicle parts according to claim 8, characterized in that: The outer surfaces of the two threaded tubes (304) are threadedly sleeved with clamping blocks (305), the outer surfaces of the two clamping blocks (305) are respectively slidably connected to the inner walls of the two connecting plates (301), and the outer surfaces of the two connecting plates (301) are fixed with mounting frames (306).
10. The clamping assembly for machining and welding vehicle parts according to claim 9, characterized in that: A plurality of springs (307) are arranged at the bottom of the two mounting frames (306), and the plurality of springs (307) are divided into two groups. The top ends of the two groups of springs (307) are respectively fixedly connected to the bottoms of the two mounting frames (306), and the bottom ends of the two groups of springs (307) are respectively fixedly connected to the tops of the two clamping blocks (305).