Precise multi-axis linkage processing machine tool for cooling fin production

Abstract

The invention relates to the technical field of linkage machining tools, in particular to a precise multi-axis linkage machining tool for cooling fin production. The driving mounting assembly comprises multiple sets of L-shaped transmission plates which are arranged above the bottom plate in a linear array mode, long plates are fixedly mounted at the lower ends of the multiple sets of L-shaped transmission plates, transmission connectors are fixedly mounted on the opposite sides of the long plates, and elastic clamping plates are rotationally mounted in the transmission connectors; and first springs are symmetrically mounted between the elastic clamping plate and the long plate. Through the cooperative elastic effect of an elastic clamping plate and an opening plate in the driving installation assembly, the distance between welded fins is actively expanded when the tail end fins are welded, the industrial problem that a welding gun cannot stretch into a narrow gap for welding due to insufficient space is effectively solved, meanwhile, the structural integrity of the fins can be kept through an elastic expansion mechanism, and the welding efficiency is improved. The whole circulating airflow of the finned tube is not damaged, and the heat dissipation performance is optimized.

Description

Technical Field

[0001] This invention relates to the field of multi-axis linkage machining technology, specifically to a precision multi-axis linkage machining tool for producing heat sink fins. Background Technology

[0002] Welding machine tools are typically used to join metal parts together using welding technology. They combine the functions of welding technology and machine tools. In the field of heat sink fin welding machine tools, such as the heat sink production processing equipment disclosed in patent CN219053539U, during the fin welding process, as the fins are continuously welded to the outer wall of the base tube, the spacing between the fins continuously decreases. When welding the last fin, the distance between the unwelded fin and the already welded fins becomes so small that the welding torch tip cannot be inserted for welding. If the U-shaped fins are manually squeezed, it will cause plastic deformation of the fins, thereby disrupting the airflow for heat dissipation on the outer wall of the heat sink. Specifically, when the fins undergo irreversible plastic deformation, the uneven distribution of the fin spacing results in: some areas having too small a fin spacing, leading to airflow blockage points and increased wind resistance; and some areas having too large a spacing, causing the airflow to bypass the effective heat dissipation area, forming a "short-circuit flow." This uneven distribution disrupts the continuity of the airflow path in the design, resulting in a decrease in heat dissipation efficiency. Summary of the Invention

[0003] To address the aforementioned shortcomings of existing technologies, this invention provides a precision multi-axis linkage machining tool for producing heat sink fins, which can effectively solve the problem that the welding time interval of fins is too small in existing technologies, affecting the welding process.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] This invention provides a precision multi-axis linkage machining tool for producing heat sink fins, comprising:

[0006] Base plate;

[0007] A drive mounting assembly includes multiple sets of L-shaped transmission plates arranged in a linear array above a base plate. A long plate is fixedly mounted on the lower end of each set of L-shaped transmission plates. A transmission joint is fixedly mounted on the opposite side of each long plate. An elastic clamping plate is rotatably mounted inside the transmission joint. A first spring is symmetrically mounted between the elastic clamping plate and the long plate. A spreading plate is provided on one side of the elastic clamping plate. The spreading plate is driven to rotate elastically on one side of the elastic clamping plate.

[0008] A rotary drive assembly for clamping a workpiece and driving a stepping rotation;

[0009] A loading auxiliary component, which is used to carry the workpiece and assist in loading.

[0010] Preferably, a support frame is fixedly installed on the upper surface of the base plate. The support frame consists of two frames, a straight rod and a square plate fixedly installed between the frames. A vertical slide rail is fixedly installed at the inner top of the frame. A lifting drive assembly is fixedly installed inside the square plate. A lifting plate is fixedly installed at the output end of the lifting drive assembly. The lifting plate is slidably connected to the inner wall of the vertical slide rail.

[0011] Preferably, a horizontal slide rail is fixedly installed on the lower end face of the lifting plate, baffles are fixedly installed on both ends of the horizontal slide rail, a main drive shaft is rotatably installed between the baffles and below the horizontal slide rail, a rotary drive component is fixedly installed on one side of the baffle, the output end of the rotary drive component passes through the baffle and is fixedly connected to the main drive shaft, a plurality of slide blocks are linearly slidably installed on the outer wall of the horizontal slide rail, and a U-shaped connecting frame is fixedly installed on the lower end face of the slide blocks.

[0012] Preferably, external plates are fixedly installed on both sides of the U-shaped connecting frame, and a transmission gear shaft is rotatably installed inside the external plates. The L-shaped transmission plate is composed of two L-shaped moving frames, one of which has a toothed groove on its lower end face and the other has a toothed groove on its upper end face. The L-shaped moving frame meshes with the transmission gear shaft through the toothed groove. A first spring is fixedly installed on the opposite side of the L-shaped transmission plate. The first spring passes through the U-shaped connecting frame and is slidably connected to it. An electromagnetic clutch is fixedly installed on the inner wall of the transmission gear shaft, and the output end of the electromagnetic clutch engages with the outer wall of the main transmission shaft through frictional transmission.

[0013] Preferably, a square frame is fixedly installed on one side of the outer plate, and a sliding frame is slidably installed on the inner wall of the square frame. The inner wall of the sliding frame has a first toothed groove that meshes with a transmission gear shaft. Second toothed grooves are provided on both sides of the sliding frame. Mounting plates are fixedly installed on both sides of the square frame. A toothed head is rotatably installed on one side of the mounting plate. A short shaft is rotatably installed on one side of the toothed head and on the outer wall of the short shaft. A sleeve is fixedly installed on one side of the toothed head and on the outer wall of the short shaft. A coil spring is provided inside the sleeve. The inner and outer ends of the coil spring are fixedly connected to the short shaft and the sleeve, respectively. A connecting rod is fixedly installed on one end of the short shaft. One side of the connecting rod and at a lower position is fixedly connected to a spreading plate. A second spring is fixedly installed between the sliding frame and the square frame.

[0014] Preferably, a vertical plate is fixedly installed on the upper end face of the base plate, and a self-centering rotary chuck is fixedly installed inside the vertical plate.

[0015] Preferably, a slide rail is fixedly installed on the upper end surface of the base plate, a sliding support plate is slidably installed in the slide rail, and a support base is fixedly installed on the upper end surface of the sliding support plate.

[0016] Preferably, a mounting bracket is fixedly installed on one side of the sliding support plate, and a telescopic drive device is fixedly installed on one side of the mounting bracket. The output end of the telescopic drive device passes through the mounting bracket and is fixedly installed with a telescopic rod. A placement plate is fixedly installed at one end of the telescopic rod, and a positioning seat is fixedly installed on one side of the placement plate. A V-shaped groove is formed on the outer wall of the placement plate at the position corresponding to the positioning seat.

[0017] The technical solution provided by this invention has the following advantages compared with the known prior art:

[0018] First, by leveraging the synergistic elasticity of the elastic clamp and the expansion plate in the drive mounting assembly, the spacing between the welded fins is actively expanded during the welding of the end fins. This effectively solves the industry problem that the welding torch cannot reach into the narrow gap for welding due to insufficient space. At the same time, this elastic expansion mechanism can maintain the integrity of the fin structure, ensuring that the overall airflow of the finned tube is not disrupted, thus optimizing the heat dissipation performance.

[0019] Secondly, the precise fit of the internal structure of the drive mounting assembly enables precise control of the fin clamping force and pushing force: the first spring provides a buffer for the elastic clamping plate to avoid rigid clamping causing indentation or warping of the thin-walled fins; the coil spring limits the maximum output torque of the expansion plate to ensure that the welded fins only undergo controllable elastic bending and can fully recover after the expansion gap, avoiding the risk of deformation.

[0020] Third, the electromagnetic clutch, in conjunction with the voltage gradient input voltage, automatically adjusts the transmission torque according to the local spacing angle of the fins. In dense areas, the force is reduced to prevent over-expansion, while in loose areas, the force is increased to ensure effective expansion, significantly improving the adaptability and reliability of the processing. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0022] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the lifting plate of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of the slide block of the present invention;

[0025] Figure 4 This is an exploded structural diagram of the block diagram of the present invention;

[0026] Figure 5 This is an exploded structural diagram of the long plate of the present invention;

[0027] Figure 6 This is an exploded structural diagram of the tooth head of the present invention;

[0028] Figure 7 This is a schematic diagram of the structure of the rotary drive assembly of the present invention;

[0029] Figure 8 This is a schematic diagram of the structure of the feeding auxiliary component of the present invention;

[0030] Figure 9 for Figure 8 Enlarged structural diagram at point A;

[0031] Figure 10 This is a schematic diagram of the structure where the fin spacing changes gradually.

[0032] Reference numerals: 1. Base plate; 101. Support frame; 102. Vertical slide rail; 2. Drive mounting assembly; 201. Lifting drive assembly; 202. Lifting plate; 203. Horizontal slide rail; 204. Baffle; 205. Main drive shaft; 206. Rotary drive component; 207. Slide seat; 208. U-shaped connecting frame; 209. External plate; 210. Transmission gear shaft; 211. L-shaped transmission plate; 212. Long plate; 213. Transmission joint; 214. Elastic clamp; 215. First spring; 216. Electromagnetic clutch; 21 7. Frame; 218. Sliding frame; 219. Second spring; 220. Mounting plate; 221. Sleeve; 222. Coil spring; 223. Short shaft; 224. Tooth head; 225. Linking rod; 226. Spreading plate; 3. Rotary drive assembly; 301. Vertical plate; 302. Self-centering rotary chuck; 4. Feeding auxiliary assembly; 401. Slide rail; 402. Sliding support plate; 403. Mounting frame; 404. Support base; 405. Telescopic drive device; 406. Telescopic rod; 407. Placement tray; 408. Positioning seat. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0034] The present invention will be further described below with reference to embodiments.

[0035] Example: Refer to Figures 1 to 10A precision multi-axis linkage machining tool for producing heat sink fins, comprising:

[0036] Base plate 1;

[0037] The drive mounting assembly 2 includes multiple sets of L-shaped transmission plates 211 arranged in a linear array above the base plate 1. A long plate 212 is fixedly installed at the lower end of the multiple sets of L-shaped transmission plates 211. A transmission joint 213 is fixedly installed on the opposite side of the long plate 212. An elastic clamping plate 214 is rotatably installed inside the transmission joint 213. A first spring 215 is symmetrically installed between the elastic clamping plate 214 and the long plate 212. A spreading plate 226 is provided on one side of the elastic clamping plate 214. The spreading plate 226 is driven to rotate elastically on one side of the elastic clamping plate 214. Through the synergistic effect of the elastic clamping plate 214 and the spreading plate 226, the spacing of the welded fins is actively expanded when welding the last fin. This design solves the industry problem that the welding torch cannot enter the narrow gap, and at the same time optimizes the airflow organization of the base tube.

[0038] Rotary drive assembly 3 is used to clamp the workpiece and drive the stepping rotation.

[0039] The feeding auxiliary component 4 is used to support the workpiece and assist in feeding.

[0040] Reference Figures 1 to 2 A support frame 101 is fixedly installed on the upper surface of the base plate 1. The support frame 101 consists of two frames, a straight rod and a square plate fixedly installed between the frames. A vertical slide rail 102 is fixedly installed on the inner top of the frame. A lifting drive assembly 201 is fixedly installed inside the square plate. The lifting drive assembly 201 is an existing device consisting of an existing motor, a threaded sleeve and a screw. A lifting plate 202 is fixedly installed on the output end of the lifting drive assembly 201. The lifting plate 202 is slidably connected to the inner wall of the vertical slide rail 102.

[0041] Reference Figures 1 to 3 A horizontal slide rail 203 is fixedly installed on the lower end face of the lifting plate 202. Baffles 204 are fixedly installed on both ends of the horizontal slide rail 203. A main drive shaft 205 is rotatably installed between the baffles 204 and below the horizontal slide rail 203. A rotary drive component 206 is fixedly installed on one side of the baffle 204. The rotary drive component 206 uses an existing motor. The output end of the rotary drive component 206 passes through the baffle 204 and is fixedly connected to the main drive shaft 205. Multiple slide blocks 207 are linearly slidably installed on the outer wall of the horizontal slide rail 203. A U-shaped connecting frame 208 is fixedly installed on the lower end face of the slide block 207.

[0042] Reference Figures 3 to 5An outer plate 209 is fixedly installed on both sides of the U-shaped connecting frame 208. A transmission gear shaft 210 is rotatably installed inside the outer plate 209. The L-shaped transmission plate 211 consists of two L-shaped moving frames. The lower end face of one L-shaped moving frame has a toothed groove, and the upper end face of the other L-shaped moving frame has a toothed groove. The L-shaped moving frame meshes with the transmission gear shaft 210 through the toothed groove. A first spring 215 is fixedly installed on the opposite side of the L-shaped transmission plate 211. The first spring 215 passes through the U-shaped connecting frame 208 and is slidably connected to it. An electromagnetic clutch 216 is fixedly installed on the inner wall of the transmission gear shaft 210. The electromagnetic clutch 216 is an existing device. The working principle of the electromagnetic clutch 216 is to control the engagement and disengagement of the clutch by electromagnetic force. It is usually composed of an electromagnetic coil, an iron core, a friction disc or other engagement component, and a spring. In the non-engaged state of the clutch, the friction disc... There is a certain gap between the drive shaft and the rotating wheel. At this time, there is no connection between the drive shaft and the main drive shaft 205. When the electromagnetic coil is activated, the magnetic field attracts the iron core, thereby engaging the friction disc with the main drive shaft 205 to form a power transmission. The gradient control of the input voltage of the electromagnetic clutch 216 is as follows: the input voltage is automatically adjusted according to the fin spacing angle. In the area where the U-shaped fin angle is small, the voltage is reduced → the transmission torque is reduced → to avoid over-spreading; in the area where the U-shaped fin angle is large, the voltage is increased → the torque is increased → to ensure effective expansion. The output end of the electromagnetic clutch 216 engages with the outer wall of the main drive shaft 205 through friction transmission. The first spring 215 is symmetrically installed between the elastic clamp 214 and the long plate 212. When the elastic clamp 214 contacts the fin to be welded, the first spring 215 provides a non-linear buffer force to ensure that the fin only undergoes elastic compression and avoids plastic deformation such as indentation or warping.

[0043] Reference Figures 4 to 6A square frame 217 is fixedly installed on one side of the outer plate 209. A sliding bracket 218 is slidably installed on the inner wall of the square frame 217. A first toothed groove is formed on the inner wall of the sliding bracket 218, which meshes with the transmission gear shaft 210. Second toothed grooves are formed on both sides of the sliding bracket 218. Mounting plates 220 are fixedly installed on both sides of the square frame 217. A toothed head 224 is rotatably installed on one side of the mounting plate 220. A short shaft 223 is rotatably installed on one side of the toothed head 224. A sleeve 221 is fixedly installed on one side of the toothed head 224 and on the outer wall of the short shaft 223. A coil spring 222 is provided inside the sleeve 221. The inner and outer ends of the coil spring 222 are respectively fixed to the short shaft 223 and the sleeve 221. A connecting rod 225 is fixedly installed at one end of the short shaft 223. The connecting rod 225 is fixedly connected to the expansion plate 226 on one side and at a lower position. A second spring 219 is fixedly installed between the sliding frame 218 and the square frame 217. The inner and outer ends of the coil spring 222 are fixed to the short shaft 223 and the sleeve 221, respectively. When the tooth 224 rotates to push the expansion plate 226, the coil spring 222 accumulates torque and limits the output torque to ≤ 70% of the fin yield strength (measured 15–25 N·m). This torque constraint causes the welded fins to only produce 15°–25° elastic bending. After the fin spacing expands by 8–15 mm, it can still completely return to its original shape, avoiding the risk of deformation.

[0044] Reference Figure 7 A vertical plate 301 is fixedly installed on the upper end face of the base plate 1, and a self-centering rotary chuck 302 is fixedly installed inside the vertical plate 301.

[0045] Reference Figures 8 to 9 A slide rail 401 is fixedly installed on the upper surface of the base plate 1. A sliding support plate 402 is slidably installed in the slide rail 401. A support base 404 is fixedly installed on the upper surface of the sliding support plate 402. A mounting bracket 403 is fixedly installed on one side of the sliding support plate 402. A telescopic drive device 405 is fixedly installed on one side of the mounting bracket 403. The telescopic drive device 405 uses an existing electric push rod. The output end of the telescopic drive device 405 passes through the mounting bracket 403 and is fixedly installed with a telescopic rod 406. A placement plate 407 is fixedly installed on one end of the telescopic rod 406. A positioning seat 408 is fixedly installed on one side of the placement plate 407. A V-shaped groove is opened on the outer wall of the placement plate 407 at the position corresponding to the positioning seat 408.

[0046] The working principle of this invention is as follows:

[0047] The operator places one end of the base tube into the self-centering rotary chuck 302 for clamping and fixing. This chuck drives the base tube to rotate in steps (the self-centering rotary chuck 302 is an existing device, composed of a self-centering chuck and a stepper motor; the self-centering chuck clamps one end of the base tube, and the stepper motor is mounted on one side of the vertical plate 301 via a mounting bracket, driving the base tube to rotate in steps via its output end connected to the self-centering chuck). By pushing the sliding support plate 402 to slide within the slide rail 401 (the sliding support plate 402 and the slide rail 401 can be fixed using existing screws, or the screws can be loosened to allow the sliding support plate 402 to slide), the sliding support plate 402 moves the support base 404 to the lower outer wall of the other end of the base tube, as shown in the reference. Figure 9 The groove on the upper surface of the support 404 can contact the outer wall of the base tube and support the base tube. The telescopic drive device 405 drives the telescopic rod 406 to move the placement plate 407 and the positioning seat 408 towards the outer wall of the base tube. The lower end surface of the positioning seat 408 will contact the outer wall of the base tube. The rotation drive assembly 3, which is set with the first U-shaped fin welded to the outer wall of the base tube, does not drive the base tube to rotate. The telescopic drive device 405 drives the telescopic rod 406, the placement plate 407, and the positioning seat 408 towards the outer wall of the base tube. The movement is initiated so that the positioning seat 408 contacts the outer wall of the base tube. At this point, personnel can slide the U-shaped fins into the positioning seat 408 via the V-groove, causing the lower end of the U-shaped fins to conform to the outer wall of the base tube. During the welding of the U-shaped fins, a three-point welding method is used: first, the point furthest from the positioning seat 408 at the contact point between the U-shaped fins and the base tube is welded; then, a second point is welded at the position between the already welded point and the positioning seat 408; finally, the telescopic drive device 405 drives the telescopic rod 406. The placement plate 407 and positioning seat 408 are moved away from the welding position, so that the positioning seat 408 is no longer in contact with the outer wall of the base tube. Finally, a final point welding is performed at the original contact position between the positioning seat 408 and the base tube, thus completing the three-point welding. This can initially weld the U-shaped fins onto the outer wall of the base tube and prevent the U-shaped fins from shifting during subsequent welding, which would cause the welding position to deviate. (It should be noted that the lower end of the positioning seat 408 is not closed, but open. In general, the positioning seat 408 is fixedly installed on one side of the placement plate 407 by two inclined plates and supported on both sides of the U-shaped fins on the outer wall of the base tube.) After welding the previous U-shaped fin, the set rotation drive component 3 will drive the base tube to rotate stepwise to align the next welding position with the V-groove. After the drive stops rotating the stainless steel, the telescopic drive device 405 will drive the telescopic rod 406 and the placement plate 407 and positioning seat 408 to move again towards the outer wall of the base tube, assisting the personnel in placing the U-shaped fins on the outer wall of the base tube for subsequent welding.

[0048] When welding the last U-shaped fin, the distance between the U-shaped fins is insufficient for the welding torch tip to extend into the weld. Manually squeezing the U-shaped fins would deform them, affecting subsequent heat dissipation. The lifting drive assembly 201 drives the lifting plate 202 to slide downwards within the vertical slide rail 102. The descending lifting plate 202 pulls the horizontal slide rail 203 down with it. Multiple sliding blocks 207, evenly distributed on the outer wall of the horizontal slide rail 203 (calculated based on the length of the base pipe; for a base pipe of 3m to 5m, three sliding blocks 207 are preferred), effectively allow the elastic clamping plate 214 to evenly clamp the pre-welded U-shaped fins and allow the spreading plate 226 to... Pushing aside the already welded U-shaped fins, the distance between the already welded U-shaped fins and the pre-welded U-shaped fins is evenly expanded, facilitating the welding of the last U-shaped fin on the outer wall of the base tube. It should be noted that when evenly pushing the slide block 207 to distribute it evenly on the outer wall of the horizontal slide rail 203, it is necessary to avoid the positioning seat 408. During the descent of the lifting plate 202 and the horizontal slide rail 203, the slide block 207 and the U-shaped connecting frame 208 will descend together. During the descent of the U-shaped connecting frame 208, the elastic clamp 214 and the spreading plate 226 will descend into the gap between the pre-welded U-shaped fins and the already welded U-shaped fins. The main drive shaft 205 is driven to rotate by opening the rotary drive component 206. During rotation, 205 drives the electromagnetic clutch 216 to rotate by contacting its output end. The transmission gear shaft 210 then meshes with the L-shaped transmission plate 211, causing the long plate 212 to move relative to it. During this relative movement, the long plate 212 moves the elastic clamping plate 214. The elastic clamping plate 214 then contacts and presses the side of the pre-welded U-shaped fins. This pressing action compresses the first spring 215, effectively preventing the long plate 212 from directly driving the elastic clamping plate 214 to contact the pre-welded U-shaped fins and causing plastic deformation. The overall deformation of the U-shaped fins reduces the subsequent heat dissipation effect. During the rotation of the transmission gear shaft 210, it meshes with the first tooth groove and drives the sliding frame 218 to descend, compressing the second spring 219 (the second spring 219 is used to reset the sliding frame 218). The descending sliding frame 218 meshes with the tooth head 224 through the second tooth groove, driving the tooth head 224 to rotate. The rotating tooth head 224 drives the short shaft 223 to rotate and coils the spring 222. During the rotation of the short shaft 223, it drives the connecting rod 225 and the expansion plate 226 to rotate (the connecting rod 225 and the expansion plate 226 are fixedly connected by existing screws. When it is necessary to adjust the angle of the expansion plate 226, the angle of the expansion plate 226 can be adjusted by loosening the screws).To facilitate the downward extension of the expansion plate 226 into the gap between the already welded U-shaped fins and the pre-welded U-shaped fins, the rotating expansion plate 226 pushes the already welded U-shaped fins, thereby increasing the distance between them. This compression of the pre-welded U-shaped fins and the pushing away of the already welded U-shaped fins widens the gap between them, allowing the welding torch tip to extend into the gap for welding.

[0049] It should be noted that during the process of the L-shaped transmission plate 211 being driven to move in opposite directions by meshing with the transmission gear shaft 210, the L-shaped transmission plate 211 will drive the first spring 215 to slide within the U-shaped connecting frame 208, thereby ensuring the stability of the L-shaped transmission plate 211 when it is driven to move.

[0050] When the elastic clamping plate 214 is driven to compress the pre-welded U-shaped fins and the spreading plate 226 is driven to push away the already welded U-shaped fins, the first spring 215 is compressed when the L-shaped transmission plate 211 drives the elastic clamping plate 214 to move toward the pre-welded U-shaped fins and compress them, providing an adjustable clamping force of 0.5-2MPa (adaptively adjusted according to the fin thickness), avoiding rigid compression that causes plastic deformation of the U-shaped fins (when the U-shaped fins are 0.3-1mm thick); and the expanded spacing can create ideal contact conditions for subsequent high-frequency welding.

[0051] When the toothed head 224 rotates to push the opening plate 226, the coil spring 222 is twisted and stores energy. The torque of the coil spring 222 limits the pushing force to ≤ 70% of the fin yield strength, ensuring that the welded fins only undergo elastic bending (the bending angle is 15°-25° when the thickness of the U-shaped fin is 0.3-1mm), without permanent deformation. After pushing open, the distance between adjacent U-shaped fins can be increased by 8 to 15mm to meet the operating space requirements of the welding torch. After welding is completed, the coil spring 222 releases the torque, driving the opening plate 226 to return to its original position. At the same time, the short shaft 223 rotates in the opposite direction to make the toothed head 224 disengage from the U-shaped fin, achieving the reset effect.

[0052] It should also be noted that in existing equipment, when welding U-shaped fins to the outer wall of the base tube, without changing the number of U-shaped fins, the distance between the U-shaped fins is kept uniform at one end of the base tube, while the distance between the U-shaped fins is usually reduced at the other end of the base tube (see reference). Figure 10As shown, the end of the base tube with uniform spacing between U-shaped fins is usually the inlet end (the angle of the U-shaped fins is relatively large when uniform spacing between each U-shaped fin is required), and conversely, the end with lower density is usually the outlet end (the angle of the U-shaped fins is relatively small when the spacing between each U-shaped fin is required, although the angle of the U-shaped fins may change, the welding position remains unchanged). This adjustment method adjusts the angle between U-shaped fins without changing the number of U-shaped fins, making the angle between the U-shaped fins gradually decrease. This is to achieve a thermodynamic balance of "enhanced heat transfer in the high-temperature zone + reduced flow resistance in the low-temperature zone". Therefore, during rotation... During the rotation of the main drive shaft 205 driven by the drive component 206, the voltage input to each electromagnetic clutch 216 needs to be adjusted according to the angle of the U-shaped fins. Where the angle between the U-shaped fins is larger, the voltage input to the electromagnetic clutch 216 is relatively higher, resulting in a larger rotation amplitude of the main drive shaft 205 driving the transmission gear shaft 210 through the electromagnetic clutches 216. Conversely, where the angle between the U-shaped fins is smaller, the voltage input to the electromagnetic clutch 216 is relatively lower (because the gap between the smaller angles of the U-shaped fins and the smaller angles between the welded U-shaped fins will increase due to the smaller angles, requiring only a smaller force). Clamping or pushing allows the welding torch to extend into the welding area, avoiding excessive clamping or pushing. The elastic clamping plate 214 and the support plate 226 are slidably and evenly distributed on the outer wall of the transverse slide rail 203. This reduces the rotation amplitude of the main drive shaft 205 driving the transmission gear shaft 210 via the electromagnetic clutch 216. Consequently, the relative movement of the L-shaped transmission plate 211 driven by the transmission gear shaft 210 is also reduced. With the reduced relative movement of the long plate 211 of the L-shaped transmission plate, the clamping force on the pre-welded U-shaped fins, driven by the long plate 212 and the relative movement of the elastic clamping plate 214, is also reduced, thus decreasing the compression amplitude of the U-shaped fins. Similarly, in the transmission... When the rotation amplitude of the moving gear shaft 210 decreases, the amplitude of the sliding frame 218 driven by the first tooth groove will also decrease accordingly. When the amplitude of the sliding frame 218 decreases, the amplitude of the rotation of the tooth head 224 driven by the second tooth groove will also decrease accordingly. The tooth head 224 drives the short shaft 223 to rotate, coils the spring 222, and drives the connecting rod 225 and the spreading plate 226 to push the U-shaped fins that have been welded. In this way, the elastic clamping plate 214 and the spreading plate 226 can be adjusted to exert different squeezing and pushing forces on the U-shaped fins to avoid the problem of deformation caused by excessive squeezing or pushing of the U-shaped fins.

[0053] After welding is completed, the entire structure is driven to rise within the support frame 101 by the lifting drive assembly 201, and then the base tube is released by the self-centering rotary chuck 302, pushing the sliding support plate 402 to slide and move within the inner wall of the slide rail 401, thus removing the base tube.

[0054] The control of electrical components in this equipment, such as the drive mounting assembly, lifting drive assembly 201, rotary drive component 206, electromagnetic clutch 216, self-centering rotary chuck 302, and telescopic drive device 405, can be programmed and controlled using existing PLC controllers. This is existing technology and is relatively mature, so it will not be elaborated on here.

[0055] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A precision multi-axis linkage machining tool for producing heat sink fins, characterized in that, include: Base plate (1); The drive mounting assembly (2) includes multiple sets of L-shaped transmission plates (211) arranged in a linear array above the base plate (1). A long plate (212) is fixedly installed at the lower end of the multiple sets of L-shaped transmission plates (211). A transmission joint (213) is fixedly installed on the opposite side of the long plate (212). An elastic clamping plate (214) is rotatably installed inside the transmission joint (213). A first spring (215) is symmetrically installed between the elastic clamping plate (214) and the long plate (212). A spreading plate (226) is provided on one side of the elastic clamping plate (214). The spreading plate (226) is driven to rotate elastically on one side of the elastic clamping plate (214). A rotary drive assembly (3) is used to clamp a workpiece and drive a stepping rotation; The loading auxiliary component (4) is used to carry the workpiece and assist in loading.

2. The precision multi-axis linkage machining tool for producing heat sink fins according to claim 1, characterized in that, A support frame (101) is fixedly installed on the upper surface of the base plate (1). The support frame (101) consists of two frames, a straight rod and a square plate fixedly installed between the frames. A vertical slide rail (102) is fixedly installed at the inner top of the frame. A lifting drive assembly (201) is fixedly installed inside the square plate. A lifting plate (202) is fixedly installed at the output end of the lifting drive assembly (201). The lifting plate (202) is slidably connected to the inner wall of the vertical slide rail (102).

3. The precision multi-axis linkage machining tool for producing heat sink fins according to claim 2, characterized in that, A horizontal slide rail (203) is fixedly installed on the lower end face of the lifting plate (202). Baffles (204) are fixedly installed on both ends of the horizontal slide rail (203). A main drive shaft (205) is rotatably installed between the baffles (204) and below the horizontal slide rail (203). A rotary drive component (206) is fixedly installed on one side of the baffle (204). The output end of the rotary drive component (206) passes through the baffle (204) and is fixedly connected to the main drive shaft (205). Multiple slide blocks (207) are linearly slidably installed on the outer wall of the horizontal slide rail (203). A U-shaped connecting frame (208) is fixedly installed on the lower end face of the slide block (207).

4. The precision multi-axis linkage machining tool for producing heat sink fins according to claim 3, characterized in that, The U-shaped connecting frame (208) is fixedly mounted with external plates (209) on both sides. A transmission gear shaft (210) is rotatably mounted inside the external plates (209). The L-shaped transmission plate (211) is composed of two L-shaped moving frames. One of the L-shaped moving frames has a toothed groove on its lower end face, and the other L-shaped moving frame has a toothed groove on its upper end face. The L-shaped moving frame meshes with the transmission gear shaft (210) through the toothed groove. A first spring (215) is fixedly mounted on the opposite side of the L-shaped transmission plate (211). The first spring (215) passes through the U-shaped connecting frame (208) and is slidably connected to it. An electromagnetic clutch (216) is fixedly mounted on the inner wall of the transmission gear shaft (210). The output end of the electromagnetic clutch (216) is engaged with the outer wall of the main transmission shaft (205) through frictional transmission.

5. A precision multi-axis linkage machining tool for producing heat sink fins according to claim 4, characterized in that, A square frame (217) is fixedly installed on one side of the outer plate (209). A sliding frame (218) is slidably installed on the inner wall of the square frame (217). A first toothed groove is formed on the inner wall of the sliding frame (218), which meshes with the transmission gear shaft (210). A second toothed groove is formed on both sides of the sliding frame (218). Mounting plates (220) are fixedly installed on both sides of the square frame (217). A toothed head (224) is rotatably installed on one side of the mounting plate (220), and a short shaft (223) is rotatably installed on one side of the toothed head (224). A sleeve (221) is fixedly installed on one side of the tooth (224) and on the outer wall of the short shaft (223). A coil spring (222) is provided inside the sleeve (221). The inner and outer ends of the coil spring (222) are fixedly connected to the short shaft (223) and the sleeve (221) respectively. A connecting rod (225) is fixedly installed on one end of the short shaft (223). The connecting rod (225) is fixedly connected to the expansion plate (226) on one side and at a lower position. A second spring (219) is fixedly installed between the sliding frame (218) and the square frame (217).

6. The precision multi-axis linkage machining tool for producing heat sink fins according to claim 1, characterized in that, A vertical plate (301) is fixedly installed on the upper end face of the base plate (1), and a self-centering rotary chuck (302) is fixedly installed inside the vertical plate (301).

7. The precision multi-axis linkage machining tool for producing heat sink fins according to claim 1, characterized in that, A slide rail (401) is fixedly installed on the upper surface of the base plate (1), a sliding support plate (402) is slidably installed in the slide rail (401), and a support base (404) is fixedly installed on the upper surface of the sliding support plate (402).

8. A precision multi-axis linkage machining tool for producing heat sink fins according to claim 7, characterized in that, A mounting bracket (403) is fixedly installed on one side of the sliding support plate (402). A telescopic drive device (405) is fixedly installed on one side of the mounting bracket (403). The output end of the telescopic drive device (405) passes through the mounting bracket (403) and is fixedly installed with a telescopic rod (406). A placement plate (407) is fixedly installed at one end of the telescopic rod (406). A positioning seat (408) is fixedly installed on one side of the placement plate (407). A V-shaped groove is opened on the outer wall of the placement plate (407) at the position corresponding to the positioning seat (408).

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