Automobile coupling outer circle polishing equipment

Abstract

The invention relates to the technical field of automobile coupling outer circle polishing, in particular to automobile coupling outer circle polishing equipment which comprises a clamping table and polishing machining equipment, a butt joint mechanism and a filling mechanism are arranged on the upper side of the clamping table, and the filling mechanism is arranged on the butt joint mechanism; in the process of clamping the sleeve coupling, rapid filling and locking of a pin hole can be synchronously completed, so that the sharp edge of the pin hole is effectively covered, and after polishing of the sleeve coupling is completed, the filling structure can be rapidly and automatically disengaged, so that workpiece disassembly and assembly and pin hole recovery are synchronously completed; in addition, in the polishing process, after the filling structure is controllably consumed along with propelling of the grinding wheel, the overall function integrity of the filling structure can still be kept, the filling structure can be detachably assembled to the next to-be-machined sleeve coupling to be continuously used, and meanwhile the consumed filling structure can be matched with the outer surface of the to-be-machined sleeve coupling in a self-adaptive mode during repeated filling.

Description

Technical Field

[0001] This invention relates to the field of automotive coupling outer diameter polishing technology, specifically to an automotive coupling outer diameter polishing device. Background Technology

[0002] Couplings in automotive transmission systems are key components that connect two shafts and transmit power and motion. Among them, sleeve couplings are widely used due to their simple structure and good alignment performance. To ensure their transmission accuracy and service life, the outer cylindrical surface of sleeve couplings usually needs to undergo high-precision polishing. Therefore, in production, special outer cylindrical polishing equipment designed for cylindrical and rotationally symmetrical workpieces is often used to uniformly and controllably grind and polish the surface of sleeve couplings to achieve the required surface finish, geometric accuracy, and assembly fit requirements, thereby meeting the stable operation requirements of automotive transmission systems under high-speed and high-load conditions.

[0003] In the prior art, when polishing the outer surface of a sleeve coupling using an external cylindrical polishing device, the sleeve coupling is usually first clamped on a rotary drive device to maintain stable and continuous directional rotation. Then, the polishing wheel on the polishing device is started, causing it to rotate at high speed in a predetermined direction and gradually move towards the outer surface of the sleeve coupling until it maintains stable contact with it. Thus, through the continuous relative motion and friction between the two, uniform polishing of the outer surface of the sleeve coupling is achieved.

[0004] However, the traditional method of polishing the outer surface of the sleeve coupling using external cylindrical polishing equipment has the following problems: 1. In the existing technology, since the outer surface of the sleeve coupling usually has pin holes for assembly and positioning, when the high-speed rotating grinding wheel travels to the pin hole area, the edge of the pin hole will form a local cutting effect on the grinding wheel surface, causing the abrasive layer of the grinding wheel to wear rapidly or even tear, significantly reducing its service life and increasing the production consumable cost. At the same time, at the moment the grinding wheel contacts the pin hole, the sudden change in polishing pressure can easily cause local stress concentration at the edge of the pin hole, resulting in excessive material removal and the formation of micro-pits, or the formation of micro-pits around the pin hole. 1. Processing burrs not only affects the uniformity of surface polishing of the sleeve coupling, but may also affect the geometric accuracy and assembly reliability of the sleeve coupling; 2. In the prior art, in order to avoid the adverse effects of the pin hole on the polishing process of the outer surface of the sleeve coupling, the pin hole is usually filled before processing. Although this method can effectively protect the grinding wheel and control the cost of consumables, it significantly increases the workload of the pre-processing stage. The preparation before filling and the cleaning and restoration steps after polishing are relatively cumbersome, which leads to a significant extension of non-polishing operation time, thus greatly affecting the overall efficiency and production rhythm of the sleeve coupling polishing process. Summary of the Invention

[0005] To achieve the above objectives, the present invention provides the following technical solution: an outer cylindrical polishing device for automotive couplings, comprising a clamping table and a polishing processing device. The clamping table is used to limit and fix the sleeve coupling. The sleeve coupling is provided with a keyway that runs through the left and right sides and pin holes that are symmetrical on the left and right sides and communicate with the keyway vertically. A docking mechanism and a filling mechanism are provided on the upper side of the clamping table, and a filling mechanism is provided on the docking mechanism.

[0006] The docking mechanism includes a lateral adjustment part that is disposed on the upper side of the clamping platform and can be adjusted to move left and right. The lateral adjustment part is provided with an assembly part that docks and assembles with the sleeve coupling. The assembly part is provided with a docking adjustment part for docking and installing the filling mechanism and a docking drive part for limiting and driving the sleeve coupling to rotate. The docking drive part is provided with an adjustment locking part that automatically locks the filling mechanism.

[0007] The filling mechanism includes an alignment insertion part that is jointly provided on the assembly part and the docking adjustment part. The alignment insertion part is used to automatically lock with the adjustment locking part and to automatically disengage with the docking adjustment part. The alignment insertion part is provided with a pin hole filling part with a filling pin hole.

[0008] The filling mechanism includes a lifting adjustment part set on the clamping platform for vertical movement adjustment, and the lifting adjustment part is provided with a clamping docking part for clamping and filling the pin hole filling part.

[0009] Preferably, the lateral adjustment unit includes guide rails symmetrically fixed on the upper side of the clamping platform, an electric slider that moves left and right is slidably mounted on the guide rails, a moving platform is fixedly mounted on the upper side of the electric slider, and a motor is fixedly mounted on the opposite side of the two moving platforms.

[0010] Preferably, the assembly part includes a fixing plate fixedly mounted on the corresponding motor drive end, a connecting plate symmetrically fixedly mounted on the side of the fixing plate away from the corresponding motor, a limiting groove extending vertically through the lower connecting plate, an mounting plate jointly fixedly mounted on the side of the two connecting plates away from the corresponding fixing plate, a threaded sleeve symmetrically fixedly mounted on the side of the mounting plate away from the corresponding connecting plate, and a through groove extending horizontally through the mounting plate and located below the corresponding threaded sleeve.

[0011] Preferably, the docking adjustment part includes a limiting plate fixedly disposed on the side of the fixed plate away from the corresponding motor and located between the two connecting plates. The limiting plate has a docking groove that runs vertically through the side away from the corresponding fixed plate and is aligned with the end of the corresponding limiting groove near the fixed plate. A sliding plate that moves vertically is elastically disposed in the docking groove by a spring. A wedge block is fixedly disposed on the lower side of the upper connecting plate on the side of the limiting plate away from the corresponding fixed plate. The lower end of the wedge block and the side near the corresponding limiting plate is an inclined surface.

[0012] Preferably, the docking drive unit includes a docking block disposed on the side of the mounting plate away from the corresponding connecting plate. The docking block is provided with docking grooves symmetrically opened on the side of the mounting plate near the corresponding threaded sleeve, which are engaged with the corresponding threaded sleeve. The docking block is provided with an operating groove on the side away from the corresponding mounting plate, which is one-to-one with the docking groove. The operating groove and the corresponding docking groove are provided with a slot that communicates with each other. A bolt that is threadedly connected to the corresponding threaded sleeve is inserted into the slot.

[0013] Preferably, the adjusting locking part includes an adjusting groove opened inside the lower end of the docking block, an adjusting plate that moves left and right is elastically slidably arranged in the adjusting groove by a second spring, a locking rod that slides through the docking block and is engaged with the corresponding through groove is fixedly arranged on the side of the adjusting plate near the corresponding mounting plate, a threaded sleeve that slides through the docking block is fixedly arranged on the side of the adjusting plate away from the corresponding mounting plate, a threaded rod is threadedly connected to the threaded sleeve, and a top plate is fixedly arranged on the side of the threaded rod away from the corresponding threaded sleeve.

[0014] Preferably, the alignment and insertion part includes a rectangular insertion post that fits into the mating groove, a rotating post that is symmetrically rotated at the upper end of the rectangular insertion post, and a spring rod that is symmetrically fixed at the lower side of the rectangular insertion post by a support.

[0015] Preferably, the pin hole filling part includes two spring rods that are elastically slidably disposed at the ends away from the corresponding fixed plates and move left and right. A mating plate is fixedly disposed on the lower side of the driven plate, and a stud is fixedly disposed on the lower side of the mating plate. A filling column that is threadedly connected to the stud and is inserted into the corresponding pin hole for filling is provided. The lower end of the filling column is an arc surface that is smoothly connected to the outer surface of the sleeve coupling.

[0016] Preferably, the lifting adjustment unit includes a U-shaped platform symmetrically fixedly mounted on the upper side of the clamping platform and located between the guide rails. A cylinder is fixedly mounted on the lower side of the horizontal section of the U-shaped platform. A U-shaped lifting frame that moves up and down is fixedly mounted on the telescopic end of the cylinder. A guide rod that is slidably connected to the horizontal section of the U-shaped lifting frame is symmetrically fixedly mounted on the lower side of the horizontal section of the U-shaped lifting frame.

[0017] Preferably, the clamping and docking part includes a U-shaped plate fixedly installed on the upper side of the U-shaped lifting frame. Guide rods two are symmetrically fixedly installed between the vertical sections of the U-shaped plate. Cylinders two are symmetrically fixedly installed on the left and right sides of the U-shaped plate. A clamping plate that is slidably connected to the guide rods two and moves left and right is fixedly installed at the telescopic end of the cylinders two. Cylinder three is fixedly installed on the lower side of the horizontal section of the U-shaped plate. An arc-shaped pressure plate that moves up and down and is located between the clamping plates is fixedly installed at the telescopic end of the cylinder three. The upper arc surface of the arc-shaped pressure plate is stably fitted with the lower arc surface of the filling column and the outer surface of the sleeve coupling.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The present invention, through the cooperation of the docking mechanism, the filling mechanism and the loading mechanism, can simultaneously complete the rapid filling and locking of the pin hole during the clamping of the sleeve coupling. This not only effectively covers the sharp edge of the pin hole, avoiding its cutting damage to the grinding wheel, significantly reducing grinding wheel wear and extending its service life, but also achieves synchronous locking and positioning of the sleeve coupling through the limiting cooperation with the pin hole, ensuring the stability of the sleeve coupling clamping. Furthermore, after the sleeve coupling is polished, the filling structure can be quickly and automatically disengaged, allowing the workpiece unloading and pin hole restoration to be completed simultaneously. This greatly simplifies the independent filling and restoration steps in the traditional process, significantly reduces non-machining time, and significantly improves the overall work efficiency of the outer circle polishing of the sleeve coupling.

[0019] 2. Through the cooperation of the docking mechanism, the filling mechanism, and the loading mechanism, this invention can ensure that even after the filling structure is controlled to be consumed as the grinding wheel advances during the polishing process, it can still maintain its overall functional integrity and can be disassembled and assembled onto the next sleeve coupling to be processed for continued use. At the same time, the consumed filling structure can adaptively match the outer surface of the sleeve coupling to be processed during repeated filling, thereby always forming a continuous working surface that smoothly connects with the outer surface of the sleeve coupling, effectively avoiding surface abrupt changes. In addition, the worn parts of the filling structure can be quickly replaced, and the overall clamping equipment can also adapt to sleeve couplings of different diameters and lengths, realizing efficient adaptation and stable clamping of multiple specifications of workpieces with one system. Attached Figure Description

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

[0021] Figure 2 This is a side cross-sectional view of part of the structure of the present invention.

[0022] Figure 3 This is a partial cross-sectional schematic diagram of the docking mechanism.

[0023] Figure 4 This is a side view sectional diagram of part of the docking mechanism.

[0024] Figure 5 This is a schematic diagram of the assembly section.

[0025] Figure 6 This is a partial cross-sectional schematic diagram of the docking adjustment section.

[0026] Figure 7 This is a partial cross-sectional schematic diagram of the docking drive section.

[0027] Figure 8 This is a schematic diagram of the filling mechanism.

[0028] Figure 9 This is a side sectional view of the filling mechanism.

[0029] Figure 10 This is a partial structural diagram of the loading mechanism.

[0030] Figure 11 This is a side sectional view of part of the loading mechanism.

[0031] Figure 12 This is a schematic diagram of the sleeve coupling structure.

[0032] In the diagram: 1. Clamping table; 2. Polishing equipment; 3. Docking mechanism; 31. Lateral adjustment unit; 311. Guide rail; 312. Electric slider; 313. Moving table; 314. Motor; 32. Assembly unit; 321. Fixing plate; 322. Connecting plate; 323. Limiting groove; 324. Mounting plate; 325. Threaded sleeve; 326. Through groove; 33. Docking adjustment unit; 331. Limiting plate; 332. Docking slide; 333. Slide plate; 334. Wedge block; 34. Docking drive unit; 341. Docking insert; 342. Docking groove; 343. Operating groove; 344. Slot; 345. Bolt; 35. Adjusting locking unit; 351. Adjusting groove; 352. Adjustment... 353. Locking rod; 354. Threaded sleeve II; 355. Threaded rod; 356. Top plate; 4. Filling mechanism; 41. Alignment insertion part; 411. Rectangular insert; 412. Rotating column; 413. Spring rod; 42. Pin hole filling part; 421. Driven plate; 422. Butt plate; 423. Stud; 424. Filling column; 5. Loading mechanism; 51. Lifting adjustment part; 511. U-shaped platform; 512. Cylinder I; 513. U-shaped lifting frame; 514. Guide rod I; 52. Clamping and docking part; 521. U-shaped plate; 522. Guide rod II; 523. Cylinder II; 524. Clamping plate; 525. Cylinder III; 526. Arc-shaped pressure plate; 6. Sleeve coupling. Detailed Implementation

[0033] 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 embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figure 1 and Figure 2A polishing device for the outer diameter of an automotive coupling includes a clamping table 1 and a polishing processing device 2 disposed in front of the clamping table 1 and used to uniformly polish the outer surface of a continuously rotating sleeve coupling 6 through directional high-speed rotation. The clamping table 1 is equipped with a docking mechanism 3 and a filling mechanism 5 on its upper side. A filling mechanism 4 is provided on the docking mechanism 3. To reiterate, the sleeve coupling 6 has a keyway that runs horizontally through it and pin holes that are symmetrically arranged horizontally and vertically connected to the keyway (e.g.,...). Figure 12 (As shown).

[0035] Please see Figure 1 and Figure 2 The docking mechanism 3 includes a horizontal adjustment part 31 that is disposed on the upper side of the clamping table 1 and can be adjusted to move left and right. The horizontal adjustment part 31 is provided with an assembly part 32 that is assembled with the sleeve coupling 6. The assembly part 32 is provided with a docking adjustment part 33 for docking and installing the filling mechanism 4 and a docking drive part 34 for limiting and driving the sleeve coupling 6 to rotate. The docking drive part 34 is provided with an adjustment locking part 35 that automatically locks the filling mechanism 4.

[0036] Please see Figure 1 , Figure 2 and Figure 3 The lateral adjustment unit 31 includes guide rails 311 that are symmetrically fixed on the upper side of the clamping table 1. An electric slider 312 that moves left and right is slidably arranged on the guide rails 311. A moving platform 313 is fixedly arranged on the upper side of the electric slider 312. A motor 314 is fixedly arranged on the opposite side of the two moving platforms 313.

[0037] Please see Figure 2 , Figure 3 , Figure 4 and Figure 5 The assembly part 32 includes a fixing plate 321 fixedly installed at the drive end of the corresponding motor 314. A connecting plate 322 is symmetrically fixedly installed on the side of the fixing plate 321 away from the corresponding motor 314. A limiting groove 323 that runs vertically through the lower connecting plate 322 is provided. An mounting plate 324 is fixedly installed on the side of the two connecting plates 322 away from the corresponding fixing plate 321. A threaded sleeve 325 is symmetrically fixedly installed on the side of the mounting plate 324 away from the corresponding connecting plate 322. A through groove 326 that runs horizontally through the mounting plate 324 and is located below the corresponding threaded sleeve 325 is provided.

[0038] The electric slider 312 can drive the moving platform 313 to move left and right along the guide rail 311 for adjustment. The moving platform 313 then drives the motor 314 to move synchronously. The motor 314 then drives the fixed plate 321 to move synchronously for adjustment. The motor 314 can also drive the fixed plate 321 to rotate continuously in a specific direction. The fixed plate 321 then drives the connecting plate 322 and the mounting plate 324 to rotate synchronously and continuously in a specific direction.

[0039] Please see Figure 2 , Figure 4 and Figure 6 The docking adjustment part 33 includes a limiting plate 331 fixedly disposed on the side of the fixed plate 321 away from the corresponding motor 314 and located between two connecting plates 322. The limiting plate 331 has a docking groove 332 that runs vertically through the side away from the corresponding fixed plate 321 and is aligned with the end of the corresponding limiting groove 323 near the fixed plate 321. A sliding plate 333 that moves vertically is elastically disposed in the docking groove 332 by a spring. A wedge block 334 is fixedly disposed on the lower side of the upper connecting plate 322 on the side of the limiting plate 331 away from the corresponding fixed plate 321. The lower end of the wedge block 334 and the side near the corresponding limiting plate 331 is an inclined surface.

[0040] Please see Figure 3 , Figure 4 and Figure 7 The docking drive unit 34 includes a docking block 341 disposed on the side of the mounting plate 324 away from the corresponding connecting plate 322 and inserted into the keyway on the sleeve coupling 6. The docking block 341 has symmetrically opened docking grooves 342 on the side near the corresponding mounting plate 324, which are inserted into the corresponding threaded sleeve 325. The docking block 341 has an operating groove 343 on the side away from the corresponding mounting plate 324, which corresponds to the docking groove 342. The operating groove 343 and the corresponding docking groove 342 are connected to each other by a slot 344. A bolt 345 that is threadedly connected to the corresponding threaded sleeve 325 is inserted into the slot 344.

[0041] When initially clamping and positioning the sleeve coupling 6, first place the sleeve coupling 6 with the pin hole facing down between the two mating blocks 341, and align the keyway with the mating blocks 341 on both sides. Then, drive the two motors 314 to move synchronously relative to each other through the electric slider 312. The fixing plate 321 then drives the mating blocks 341 to move synchronously relative to each other through the mounting plate 324. The mating blocks 341 are then stably inserted into the keyway until the fixing plate 321 drives the limiting plate 331 to also move into the keyway and the mating slide 332 is aligned with the corresponding pin hole, thus completing the initial clamping and positioning of the sleeve coupling 6. At this time, the fixing plate 321 and the mounting plate 324 can be continuously rotated in a directional manner through the motor 314. The mating blocks 341 rotate synchronously and, through their cooperation with the keyway, can drive the sleeve coupling 6 to also rotate synchronously and continuously in a directional manner.

[0042] When it is necessary to limit and clamp sleeve couplings 6 of different diameters, firstly, manually insert the disassembly tool into the operating groove 343, then unscrew the corresponding bolt 345 from the corresponding threaded sleeve 325 and remove it. At this time, the replacement mating block 341 can be directly slid off from the threaded sleeve 325. Then, select the mating block 341 that matches the keyway size of the new sleeve coupling 6, and insert its mating groove 342 into the corresponding threaded sleeve 325. Then, insert the bolt 345 into the corresponding operating groove 343 and slot 344 and tighten it into the corresponding threaded sleeve 325, thereby assembling the new mating block 341 onto the mounting plate 324.

[0043] Please see Figure 3 and Figure 4 The adjusting locking part 35 includes an adjusting groove 351 opened inside the lower end of the docking block 341. An adjusting plate 352 that moves left and right is elastically slidably arranged in the adjusting groove 351 by a spring. A locking rod 353 that slides through the docking block 341 and is engaged with the corresponding through groove 326 is fixedly arranged on the side of the adjusting plate 352 near the corresponding mounting plate 324. A threaded sleeve 354 that slides through the docking block 341 is fixedly arranged on the side of the adjusting plate 352 away from the corresponding mounting plate 324. A threaded rod 355 is threadedly connected in the threaded sleeve 354. A top plate 356 is fixedly arranged on the side of the threaded rod 355 away from the corresponding threaded sleeve 354.

[0044] When the two mating blocks 341 are simultaneously inserted into the keyway of the corresponding sleeve coupling 6, the two relatively moving top plates 356 come into contact and press against each other. The top plates 356 then drive the corresponding threaded sleeve 354 and adjusting plate 352 to slide along the adjusting groove 351 through the threaded rod 355 and compress the corresponding spring 2. The adjusting plate 352 then drives the locking rod 353 to move relative to the corresponding through groove 326 until the mating slide 332 is aligned with the corresponding pin hole. At this time, the end of the locking rod 353 away from the corresponding adjusting plate 352 is about to enter the corresponding mating slide 332.

[0045] When limiting and clamping sleeve couplings 6 of different lengths or different pin hole spacings, the top plate 356 and threaded rod 355 are rotated, so that the threaded rod 355 drives the top plate 356 to move left and right through the screw drive with the corresponding threaded sleeve 354. This ensures that when the mating groove 332 is aligned with the corresponding pin hole, the two interacting top plates 356 can respectively drive the end of the corresponding locking rod 353 away from the corresponding adjusting plate 352 to just enter the mating groove 332.

[0046] The above operation method can achieve efficient adaptation and stable clamping of a system for different specifications of sleeve couplings 6.

[0047] Please see Figure 2 and Figure 8 The filling mechanism 4 includes an alignment insertion part 41 that is jointly provided on the assembly part 32 and the docking adjustment part 33. The alignment insertion part 41 is used to automatically lock with the adjusting locking part 35 and to automatically disengage with the docking adjustment part 33. The alignment insertion part 41 is provided with a pin hole filling part 42 for filling pin holes.

[0048] Please see Figure 8 and Figure 9 The alignment and insertion part 41 includes a rectangular insertion post 411 that fits and inserts into the mating groove 332. The upper end of the rectangular insertion post 411 is symmetrically rotated with a rotating post 412. The lower side of the rectangular insertion post 411 is symmetrically fixed with a spring rod 413 through a support.

[0049] Please see Figure 8 and Figure 9 The pin hole filling part 42 includes a left-right movable driven plate 421 with two spring rods 413 elastically sliding at one end away from the corresponding fixed plate 321. A docking plate 422 is fixedly installed on the lower side of the driven plate 421. A stud 423 is fixedly installed on the lower side of the docking plate 422. A filling column 424 is threadedly connected to the stud 423 and is inserted into the corresponding pin hole for filling. The lower end of the filling column 424 is an arc surface that smoothly connects with the outer surface of the sleeve coupling 6.

[0050] When the initial clamping of the sleeve coupling 6 is completed, the clamped filling column 424 and rectangular insert 411 are aligned and inserted into the corresponding pin holes by the filling mechanism 5. The rectangular insert 411 is then inserted into the corresponding docking groove 332, and the upper end continuously drives the sliding plate 333 to compress the corresponding spring until the filling column 424 is fully inserted into the pin hole, and the lower arc surface of the filling column 424 smoothly connects with the outer surface of the sleeve coupling 6 to form a continuous working surface. At this time, the electric slider 312 continues to drive the two limiting plates 331 to move relative to each other. The limiting plates 331 then drive the rectangular insert 411 in the docking groove 332 to move synchronously. Because the filling column 424 is subjected to When the pin hole restricts movement, the filling column 424 moves relative to the driven plate 421 and the corresponding spring rod 413 via the mating plate 422 until the rectangular insert 411 contacts and is tightly pressed against the end of the corresponding locking rod 353. Thus, the filling column 424 is stably fixed in the pin hole by locking the rectangular insert 411 with the locking rod 353. Furthermore, the limiting cooperation between the filling column 424 and the pin hole can also lock the initially limited clamped sleeve coupling 6 synchronously. At this time, the motor 314 can drive the clamped and locked sleeve coupling 6 to rotate continuously in a directional direction, and the grinding wheel on the polishing equipment 2 can perform uniform polishing on the outer surface of the sleeve coupling 6.

[0051] The filler post 424 can be quickly replaced by rotating and unscrewing it from the corresponding stud 423. It can also be replaced with a filler post 424 that matches the size of the pin hole according to different pin hole diameters, or a filler post 424 with a smooth arc surface at the end according to the outer surface diameter of the sleeve coupling 6, so as to achieve the adaptation filling and locking of sleeve couplings 6 of different specifications.

[0052] When the outer surface of the sleeve coupling 6 is polished, the sleeve coupling 6 is first rotated by the motor 314 to adjust it to the pin hole facing downwards. Then, the electric slider 312 drives the limiting plate 331 to move in opposite directions. Under the elastic action of the spring rod 413, the rectangular insert 411 moves synchronously until it returns to its initial state. At this time, under the restriction of the pin hole, neither the rectangular insert 411 nor the filling column 424 can continue to move, and the locking rod 353 no longer contacts the rectangular insert 411. Then, the electric slider 312 continues to move in opposite directions, and the spring rod 312 presses the adjusting plate 352 through its elastic force, causing it to synchronously drive the locking rod 353 to move relative to the adjusting groove 351 and the rectangular insert 411, so that the locking rod 353 never contacts the rectangular insert 411. The insert 411 moves relative to the corresponding limiting groove 323, and the inclined surface on the wedge block 334 contacts the corresponding rotating column 412 at the upper end of the rectangular insert 411. The wedge block 334 then drives the rectangular insert 411 and the filling column 424 to move downward through the pressing action of the inclined surface and the rotating column 412. This causes the filling column 424 to break through the locking tension formed by the edge of the pin hole during the polishing process and move downward steadily out of the corresponding pin hole. At this time, the filling mechanism 5 can clamp and fix the lower end of the filling column 424 and take the corresponding rectangular insert 411 out of the pin hole. Then, the electric slider 312 continues to move in opposite directions until the mating insert 341 is completely dislodged from the keyway, thereby releasing the clamping of the sleeve coupling 6.

[0053] The above-described operation method enables the simultaneous and rapid filling and locking of the pin hole during the clamping of the sleeve coupling 6. This not only effectively covers the sharp edges of the pin hole, preventing it from cutting and damaging the grinding wheel, significantly reducing grinding wheel wear and extending its service life, but also achieves synchronous locking and positioning of the sleeve coupling 6 through the limiting cooperation with the pin hole, ensuring the stability of the sleeve coupling 6 clamping. Furthermore, after the sleeve coupling 6 is polished, the filling structure can be quickly and automatically disengaged, allowing the workpiece unloading and pin hole restoration to be completed simultaneously. This greatly simplifies the independent filling and restoration steps in the traditional process, significantly reduces non-machining time, and significantly improves the overall work efficiency of the outer diameter polishing of the sleeve coupling 6.

[0054] Please see Figure 1The filling mechanism 5 includes a lifting adjustment part 51 disposed on the clamping table 1 and used for vertical movement adjustment, and the lifting adjustment part 51 is provided with a clamping docking part 52 for clamping and filling the pin hole filling part 42.

[0055] Please see Figure 1 , Figure 10 and Figure 11 The lifting adjustment unit 51 includes U-shaped platforms 511 symmetrically installed on the upper side of the clamping table 1 and located between the guide rails 311. Both U-shaped platforms 511 can be disassembled and the installation spacing can be adjusted to accommodate sleeve couplings 6 of different lengths or different pin hole spacings. A cylinder 512 is fixedly installed on the lower side of the horizontal section of the U-shaped platform 511. A U-shaped lifting frame 513 that moves up and down is fixedly installed at the telescopic end of the cylinder 512. A guide rod 514 that slides and connects with the horizontal section of the U-shaped lifting frame 511 is symmetrically fixed on the lower side of the horizontal section of the U-shaped lifting frame 513.

[0056] Please see Figure 1 , Figure 10 and Figure 11 The clamping and docking part 52 includes a U-shaped plate 521 fixedly installed on the upper side of the U-shaped lifting frame 513. Guide rods 522 are symmetrically fixedly installed between the vertical sections of the U-shaped plate 521. Cylinders 523 are symmetrically fixedly installed on the left and right sides of the U-shaped plate 521. A clamping plate 524 that is slidably connected to the guide rods 522 and moves left and right is fixedly installed at the telescopic end of the cylinder 523. A cylinder 525 is fixedly installed on the lower side of the horizontal section of the U-shaped plate 521. An arc-shaped pressure plate 526 that moves up and down and is located between the clamping plates 524 is fixedly installed at the telescopic end of the cylinder 525. The upper arc surface of the arc-shaped pressure plate 526 is stably attached to the lower arc surface of the filling column 424 and the outer surface of the sleeve coupling 6.

[0057] When the filling column 424 and the rectangular insert 411 are to be inserted into the corresponding pin holes, the clamping plate 524 is first moved relative to the guide rod 522 by the second cylinder 523 to clamp the lower end of the filling column 424. Then, the U-shaped lifting frame 513 is moved upward by the first cylinder 512. The U-shaped lifting frame 513 then moves the U-shaped plate 521 and the clamped filling column 424 and rectangular insert 411 upward until the rectangular insert 411 is inserted into the docking groove 332 and the sliding plate 333 compresses the spring, and the filling column 424 is also inserted into the pin hole. Inside, at this time, the cylinder 3 525 drives the arc-shaped pressure plate 526 to move upward continuously and contact and fit with the lower arc surface of the filling column 424, and simultaneously releases the clamping plate 524 from the filling column 424 until the arc-shaped pressure plate 526 pushes the filling column 424 completely into the pin hole and the upper arc surface of the arc-shaped pressure plate 526 is stably fitted with the outer surface of the sleeve coupling 6. At this time, under the reverse elastic action of the spring 1, the lower arc surface of the filling column 424 can stably fit with the upper arc surface of the arc-shaped pressure plate 526 and smoothly connect with the outer surface of the sleeve coupling 6 to form a continuous working surface.

[0058] Each time the filler column 424 is loaded onto the sleeve coupling 6, its lower arc surface is polished synchronously with the outer surface of the sleeve coupling 6 by the polishing equipment 2 and is continuously consumed. When the filler column 424 is loaded onto a new sleeve coupling 6 to be processed, the adaptive reverse elastic action of the spring pair of sliding plates 333 and the rectangular insert 411 ensures that the lower arc surface of the consumed filler column 424 is always stably attached to the upper arc surface of the arc-shaped pressure plate 526 and always smoothly connected with the outer surface of the sleeve coupling 6 to form a continuous working surface. This ensures that the function of a single filler column 424 is always complete and that it can continue to work until the filler column 424 is consumed to the point that it needs to be replaced.

[0059] The above-described operation method allows the filling structure to maintain its overall functional integrity even after being controlled to wear down as the grinding wheel advances during the polishing process. It can also be disassembled and assembled onto the next sleeve coupling 6 to be processed for continued use. At the same time, the worn filling structure can adaptively match the outer surface of the sleeve coupling 6 to be processed during repeated filling, thereby always forming a continuous working surface that smoothly connects with the outer surface of the sleeve coupling 6, effectively avoiding surface abrupt changes. In addition, the worn parts of the filling structure can be quickly replaced.

[0060] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0061] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0062] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0063] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A polishing device for the outer diameter of an automotive coupling, comprising a clamping table and a polishing machine, wherein the clamping table is used to limit and fix the sleeve coupling, and the sleeve coupling has a keyway that runs through it from left to right and a pin hole that is symmetrical from left to right and communicates vertically with the keyway, characterized in that: The upper side of the clamping platform is provided with a docking mechanism and a filling mechanism, and the docking mechanism is provided with a filling mechanism; The docking mechanism includes a lateral adjustment part that is set on the upper side of the clamping platform and can be adjusted left and right. The lateral adjustment part is provided with an assembly part that docks with the sleeve coupling. The assembly part is provided with a docking adjustment part for docking and installing the filling mechanism and a docking drive part for limiting and driving the sleeve coupling to rotate. The docking drive part is provided with an adjustment locking part that automatically locks the filling mechanism. The filling mechanism includes an alignment insertion part that is jointly provided on the assembly part and the docking adjustment part. The alignment insertion part is used to automatically lock with the adjusting locking part and to automatically disengage with the docking adjustment part. The alignment insertion part is provided with a pin hole filling part with a filling pin hole. The filling mechanism includes a lifting adjustment part set on the clamping platform for vertical movement adjustment, and the lifting adjustment part is provided with a clamping docking part for clamping and filling the pin hole filling part.

2. The automotive coupling outer diameter polishing equipment according to claim 1, characterized in that: The lateral adjustment unit includes guide rails symmetrically fixed on the upper side of the clamping platform. An electric slider that moves left and right is slidably mounted on the guide rail. A moving platform is fixedly mounted on the upper side of the electric slider. A motor is fixedly mounted on the opposite side of each of the two moving platforms.

3. The automotive coupling outer diameter polishing equipment according to claim 2, characterized in that: The assembly part includes a fixing plate fixedly installed on the corresponding motor drive end. A connecting plate is symmetrically fixedly installed on the side of the fixing plate away from the corresponding motor. A limiting groove that runs vertically through the lower connecting plate is opened. An mounting plate is fixedly installed on the side of the two connecting plates away from the corresponding fixing plate. A threaded sleeve is symmetrically fixedly installed on the side of the mounting plate away from the corresponding connecting plate. A through groove that runs horizontally through the mounting plate and is located below the corresponding threaded sleeve is opened on the mounting plate.

4. The automotive coupling outer diameter polishing equipment according to claim 3, characterized in that: The docking adjustment part includes a limiting plate fixedly installed on the side of the fixed plate away from the corresponding motor and located between two connecting plates. The limiting plate has a docking groove that runs vertically through the side away from the corresponding fixed plate and is aligned with the end of the corresponding limiting groove near the fixed plate. A sliding plate that moves up and down is elastically installed in the docking groove by a spring. A wedge block is fixedly installed on the lower side of the upper connecting plate on the side of the limiting plate away from the corresponding fixed plate. The lower end of the wedge block and the side near the corresponding limiting plate is an inclined surface.

5. The automotive coupling outer diameter polishing equipment according to claim 3, characterized in that: The docking drive unit includes a docking block disposed on the side of the mounting plate away from the corresponding connecting plate. The docking block is symmetrically provided with docking grooves on the side of the mounting plate close to the corresponding threaded sleeve, which are engaged with the corresponding threaded sleeve. The docking block is provided with an operating groove on the side of the mounting plate away from the corresponding docking groove, which is in common with the corresponding docking groove. A slot is provided between the operating slot and the corresponding docking groove, and a bolt is inserted into the slot to be threadedly connected to the corresponding threaded sleeve.

6. The automotive coupling outer diameter polishing equipment according to claim 5, characterized in that: The adjusting locking part includes an adjusting groove inside the lower end of the docking block. An adjusting plate that moves left and right is elastically slidably arranged in the adjusting groove by a spring. A locking rod that slides through the docking block and is engaged with the corresponding through groove is fixedly arranged on the side of the adjusting plate near the corresponding mounting plate. A threaded sleeve that slides through the docking block is fixedly arranged on the side of the adjusting plate away from the corresponding mounting plate. A threaded rod is threadedly connected inside the threaded sleeve. A top plate is fixedly arranged on the side of the threaded rod away from the corresponding threaded sleeve.

7. The automotive coupling outer diameter polishing equipment according to claim 4, characterized in that: The alignment and insertion part includes a rectangular insertion post that fits into the mating groove. The upper end of the rectangular insertion post is symmetrically rotated with a rotating post, and the lower side of the rectangular insertion post is symmetrically fixed with a spring rod through a support.

8. The automotive coupling outer diameter polishing equipment according to claim 7, characterized in that: The pin hole filling part includes two spring rods that are elastically slidably disposed at the ends away from the corresponding fixed plates and move left and right. A mating plate is fixedly disposed on the lower side of the driven plate, and a stud is fixedly disposed on the lower side of the mating plate. A filling column that is threadedly connected to the stud and is inserted into the corresponding pin hole for filling is provided. The lower end of the filling column is an arc surface that is smoothly connected to the outer surface of the sleeve coupling.

9. The automotive coupling outer diameter polishing equipment according to claim 2, characterized in that: The lifting adjustment unit includes a U-shaped platform that is symmetrically fixed on the upper side of the clamping platform and located between the guide rails. A cylinder is fixedly installed on the lower side of the horizontal section of the U-shaped platform. A U-shaped lifting frame that moves up and down is fixedly installed on the telescopic end of the cylinder. A guide rod that is slidably connected to the horizontal section of the U-shaped lifting frame is symmetrically fixed on the lower side of the horizontal section of the U-shaped lifting frame.

10. The automotive coupling outer diameter polishing equipment according to claim 9, characterized in that: The clamping and docking part includes a U-shaped plate fixedly installed on the upper side of the U-shaped lifting frame. Guide rods two are symmetrically fixedly installed between the vertical sections of the U-shaped plate. Cylinders two are symmetrically fixedly installed on the left and right sides of the U-shaped plate. A clamping plate that is slidably connected to the guide rods two and moves left and right is fixedly installed at the telescopic end of cylinder two. Cylinder three is fixedly installed on the lower side of the horizontal section of the U-shaped plate. An arc-shaped pressure plate that moves up and down and is located between the clamping plates is fixedly installed at the telescopic end of cylinder three. The upper arc surface of the arc-shaped pressure plate is stably fitted with the lower arc surface of the filling column and the outer surface of the sleeve coupling.

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