Polishing device for inner wall and outer wall of cylindrical workpiece

Abstract

The invention relates to the technical field of polishing equipment, in particular to a cylindrical workpiece inner and outer wall polishing device which comprises a workbench, a driving assembly, a feeding assembly, a discharging assembly, an inner polishing assembly and an outer polishing assembly. Through linkage of the feeding assembly and the driving assembly, automatic feeding and accurate positioning of the cylindrical workpieces are achieved, the pressing wheels swing along with the rotating frame to press the workpieces, the workpieces are released or blocked through opening and closing of the first barrier strip and the second barrier strip, actions are coordinated, feeding is reliable, and the automation degree is high; according to the discharging assembly, vertical movement of a lifting base is ingeniously converted into swing of a connecting frame through matching of a driving plate and an inclined face of a driving wheel, then polished workpieces are pushed out, actions are linked, discharging is smooth, and the discharging efficiency is improved; the inner polishing assembly and the outer polishing assembly can accurately convey an inner polishing wheel and an outer polishing wheel to designated positions of the inner wall and the outer wall of a workpiece, stable polishing pressure is kept, inner polishing and outer polishing can be conducted at the same time and can also be independently controlled according to the process requirement, and the polishing efficiency and flexibility are improved.

Description

Technical Field

[0001] This invention relates to the field of polishing equipment technology, specifically a polishing device for the inner and outer walls of cylindrical workpieces. Background Technology

[0002] In the field of mechanical manufacturing, cylindrical workpieces (such as steel pipes, sleeves, cylinder barrels, bushings, pipe connectors, etc.) are widely used. These workpieces are usually used as key structural or functional components, and the surface roughness, smoothness and dimensional accuracy of their inner and outer walls directly affect the product's assembly accuracy, sealing performance, wear resistance, corrosion resistance and service life.

[0003] However, traditional polishing methods rely heavily on manual assistance for loading, positioning, and unloading. Operators need to place the workpieces one by one at the polishing station and then manually remove them after polishing. This not only makes the process cumbersome but also results in extremely low efficiency per process. For cylindrical workpieces that are heavy or long, manual handling and positioning also pose safety hazards. Some existing semi-automatic polishing equipment uses a simple support structure to fix the workpiece, lacking an adaptive clamping and limiting mechanism. During the polishing process, the workpiece is prone to slippage, vibration or even jumping due to high-speed rotation, resulting in uneven polishing texture on the inner and outer walls and large fluctuations in surface roughness values, which affects the product qualification rate. Most polishing equipment can only polish the inner or outer wall separately. To complete the processing of a complete workpiece, two clamping and two polishing operations are required. This not only prolongs the production cycle, but may also cause the coaxiality of the inner and outer walls of the workpiece to exceed the tolerance due to the reference deviation between the two clamping operations. Summary of the Invention

[0004] To address the problems in the prior art, the present invention provides a polishing device for the inner and outer walls of cylindrical workpieces.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a polishing device for the inner and outer walls of a cylindrical workpiece, including a worktable, a driving component disposed on the worktable, and a feeding component disposed on the worktable; The drive assembly includes a first fixed base, a first support roller, a connecting shaft, a rotating frame, a connecting bar, and a pressure roller; The feeding assembly includes a feeding hopper and a fixing bar. The feeding hopper is fixedly connected to the worktable, and a fixing bar is fixedly connected to the feeding hopper. The feeding hopper and the feeding hopper together form a figure-eight structure. Two connecting shafts are rotatably connected to the feeding hopper. A U-shaped rotating frame is fixedly connected to the two connecting shafts. Multiple connecting bars are linearly arrayed and fixedly connected to the rotating frame. Pressure rollers for pressing down cylindrical workpieces are rotatably connected to the connecting bars. A first gear is fixedly connected to one of the connecting shafts. A first rotating shaft and a second rotating shaft are rotatably connected to the feeding hopper. A U-shaped rotating shaft is fixedly connected to the first rotating shaft. An arc-shaped first stop bar is fixedly connected to the second rotating shaft, and a second stop bar with an arc-shaped cross-section is fixedly connected to the end of the first rotating shaft. A second gear is fixedly connected to the end of the second rotating shaft, and a third gear is fixedly connected to the end of the second rotating shaft. A fixed plate is fixedly connected to the hopper, and a second driving component is fixedly connected to the fixed plate. A driving bar with a "rocker" shaped cross-section is fixedly connected to the telescopic end of the second driving component. A first rack, a second rack, and a third rack are fixedly connected to the driving bar. The first rack meshes with the first gear, the second rack meshes with the second gear, and the third rack meshes with the third gear. The first rack and the third rack are located on the same side and on opposite sides of the second rack.

[0006] Specifically, two first fixed seats are fixedly connected to the worktable, and a first support roller is rotatably connected to the two first fixed seats. A lifting seat with a U-shaped cross-section is slidably connected to the worktable, and two second fixed seats are fixedly connected to the lifting seat. A second support roller is rotatably connected between the two second fixed seats.

[0007] Specifically, two fixed blocks are fixedly connected to the feeding hopper, and two guide shafts are fixedly connected between the two fixed blocks. A guide block is fixedly connected to one side of the drive bar, and the guide block is slidably connected to the guide shaft.

[0008] Specifically, a fixed frame is fixedly connected to the top of the feeding hopper, a first screw is threadedly connected to the fixed frame, four guide posts are slidably connected to the fixed frame, a guide frame is fixedly connected to the bottom of the four guide posts, the first screw is rotatably connected to the guide frame, and a handwheel is fixedly connected to the top of the first screw.

[0009] Specifically, a first driving component is fixedly connected to the workbench, a first pulley is fixedly connected to the end of the first support roller, and a second pulley is fixedly connected to the output end of the first driving component. The first pulley and the second pulley are driven by a belt.

[0010] Specifically, the workbench is equipped with a feeding assembly, which includes a connecting plate and a third driving component. The connecting plate is fixedly connected to the inside of the workbench, and the third driving component is fixedly connected to the connecting plate. The telescopic end of the third driving component is fixedly connected to the lifting seat. An installation shaft is fixedly connected to the workbench, and a connecting frame is rotatably connected to the installation shaft. A torsion spring is fixedly connected between the connecting frame and the workbench. Multiple push rollers are linearly arrayed and rotatably connected to the connecting frame. The push rollers are located on the side of the cylindrical workpiece away from the feeding hopper. Multiple inclined driving plates are linearly arrayed and fixedly connected to the bottom end of the connecting frame. Multiple mounting strips are linearly arrayed and fixedly connected to the lifting seat. A driving wheel is rotatably connected to the bottom end of the mounting strip, and the driving wheel is rollingly connected to the driving plate.

[0011] Specifically, a guide rod is fixedly connected to the bottom end of the lifting seat, and the guide rod is slidably connected to the connecting plate.

[0012] Specifically, the workbench is equipped with an internal projection assembly, which includes a first slide rail and a first sliding sleeve. Two first slide rails are fixedly connected to the workbench, and two first sliding sleeves are slidably connected to each first slide rail. A first slide table is fixedly connected to each of the four first sliding sleeves. Two third fixed seats are fixedly connected to the workbench, and a second screw is rotatably connected between the two third fixed seats. A first threaded seat is fixedly connected to the bottom end of the first slide table, and the second screw is threadedly connected to the first threaded seat. A fourth driving component is fixedly connected to one of the third fixed seats, and the output end of the fourth driving component is fixedly connected to the second screw. A fifth driving component is fixedly connected to the first slide table, and a third pulley is fixedly connected to the output end of the fifth driving component. A side plate is fixedly connected to the first slide table, and a first rotating seat is fixedly connected to the side plate. A first rotating rod is rotatably connected to the first rotating seat, and a fourth pulley is fixedly connected to one end of the first rotating rod. The third pulley and the fourth pulley are driven by a belt, and an internal projection wheel is fixedly connected to the other end of the first rotating rod.

[0013] Specifically, the workbench is equipped with an external throwing assembly, which includes a second slide rail and a second sliding sleeve. Two second slide rails parallel to the direction of the first support roller are fixedly connected to the workbench. Two second sliding sleeves are slidably connected to each second slide rail. A second slide platform is fixedly connected to each of the four second sliding sleeves. Two third slide rails perpendicular to the direction of the second slide rails are fixedly connected to the second slide platforms. Two third sliding sleeves are slidably connected to each of the third slide rails. A third slide platform is fixedly connected to the top of each of the four third sliding sleeves. A mounting frame is fixedly connected to the third slide platform. A second rotating seat is fixedly connected to the mounting frame. A second rotating rod is rotatably connected to the second rotating seat. An external throwing wheel is fixedly connected to one end of the second rotating rod. A fifth pulley is fixedly connected to the other end of the second rotating rod. An eighth driving component is fixedly connected to the mounting frame. A sixth pulley is fixedly connected to the output end of the eighth driving component. The fifth pulley and the sixth pulley are driven by a belt.

[0014] Specifically, two fourth fixed seats are fixedly connected to the worktable, and a third screw is rotatably connected between the two fourth fixed seats. A sixth driving component is fixedly connected to one of the fourth fixed seats, and the sixth driving component is fixedly connected to the third screw. A second threaded seat is fixedly connected to the bottom end of the second slide, and the third screw is threadedly connected to the second threaded seat. Two fifth fixed seats are fixedly connected to the second slide, and a fourth screw is rotatably connected between the two fifth fixed seats. A third threaded seat is fixedly connected to the bottom end of the third slide, and the fourth screw is threadedly connected to the third threaded seat. A seventh driving component is fixedly connected to one of the fifth fixed seats, and the output end of the seventh driving component is fixedly connected to the fourth screw.

[0015] The beneficial effects of this invention are: (1) The inner and outer wall polishing device for cylindrical workpieces described in this invention has a drive assembly on the worktable and a feeding assembly on the worktable. By linking the feeding assembly with the drive assembly, the automatic feeding and precise positioning of the cylindrical workpiece are realized. The pressure roller swings with the rotating frame to press the workpiece. The opening and closing of the first stop bar and the second stop bar release or block the workpiece. The actions are coordinated, the feeding is reliable, and the degree of automation is high.

[0016] (2) The inner and outer wall polishing device for cylindrical workpieces described in this invention has a feeding component on the worktable. The feeding component cleverly transforms the vertical movement of the lifting seat into the swing of the connecting frame through the inclined surface cooperation of the drive plate and the drive wheel, thereby using the push wheel to push out the polished workpiece. The structure is compact, the action is linked, the unloading is smooth, and the feeding efficiency is improved.

[0017] (3) The inner and outer wall polishing device for cylindrical workpieces described in this invention has an inner polishing component and an outer polishing component on the worktable. The inner polishing component and the outer polishing component can accurately deliver the inner polishing wheel and the outer polishing wheel to the designated positions on the inner and outer walls of the workpiece and maintain a stable polishing pressure. The inner and outer polishing can be carried out simultaneously or independently controlled according to the process requirements, which greatly improves the polishing efficiency and flexibility and is suitable for the processing needs of cylindrical workpieces of different specifications. Attached Figure Description

[0018] Figure 1 A schematic diagram of the overall structure of a preferred embodiment of the cylindrical workpiece inner and outer wall polishing device provided by the present invention; Figure 2 for Figure 1 The diagram shown is an enlarged view of the structure of part A. Figure 3 This is a schematic diagram of the connection structure between the feeding hopper and the fixing frame of the present invention; Figure 4 for Figure 3 The diagram shown is an enlarged view of the structure of section B. Figure 5 for Figure 4 The diagram shown is an enlarged view of the C-section structure. Figure 6 This is a schematic diagram of the connection structure between the guide frame and the guide column of the present invention; Figure 7 for Figure 6 The diagram shown is an enlarged view of the structure of part D. Figure 8 for Figure 7 The diagram shown is an enlarged view of the E-section structure. Figure 9 This is a schematic diagram of the connection structure between the connecting plate and the third driving component of the present invention; Figure 10 for Figure 9 The diagram shows an enlarged view of the F-section structure. Figure 11 for Figure 9 The diagram shows an enlarged view of the G section structure. Figure 12 This is a schematic diagram of the connection structure between the connecting frame and the torsion spring of the present invention.

[0019] In the diagram: 1. Workbench; 2. Drive assembly; 201. First fixed seat; 202. First support roller; 203. Lifting seat; 204. Second fixed seat; 205. Second support roller; 206. First pulley; 207. First drive component; 208. Second pulley; 209. Connecting shaft; 210. Rotating frame; 211. Connecting bar; 212. Pressure roller; 3. Feeding assembly; 301. Discharge hopper; 302. Fixed bar; 303. Feeding hopper; 304. Fixed frame; 305. First screw; 306. Guide frame; 307. Handwheel; 308. 309. Guide post; 310. First gear; 311. First rotating shaft; 312. First stop bar; 313. Second rotating shaft; 314. Second stop bar; 315. Third gear; 316. Fixing plate; 317. Second driving component; 318. Driving bar; 319. First rack; 320. Second rack; 321. Third rack; 322. Fixing block; 323. Guide shaft; 324. Guide block; 401. Unloading assembly; 402. Connecting plate; 403. Third driving component; 404. Guide rod; 405. Mounting shaft; 406. Connecting... 406. Connecting frame; 407. Push wheel; 408. Drive plate; 409. Mounting strip; 410. Drive wheel; 5. Torsion spring; 5. Inner throwing assembly; 501. First slide rail; 502. First sliding sleeve; 503. First slide table; 504. Third fixed seat; 505. Second screw; 506. First threaded seat; 507. Fourth driving component; 508. Fifth driving component; 509. Third pulley; 510. Side plate; 511. First rotating seat; 512. First rotating rod; 513. Fourth pulley; 514. Inner throwing wheel; 6. Outer throwing assembly; 601. 602. Second slide rail; 603. Second slide sleeve; 604. Fourth fixed seat; 605. Third screw; 606. Second threaded seat; 607. Sixth driving component; 608. Third slide rail; 609. Third slide sleeve; 610. Third slide table; 611. Fifth fixed seat; 612. Fourth screw; 613. Third threaded seat; 614. Seventh driving component; 615. Mounting bracket; 616. Eighth driving component; 617. Second rotating seat; 618. Second rotating rod; 619. Fifth pulley; 620. Sixth pulley; 621. Outer polishing wheel. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0021] like Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12 As shown, the polishing device for the inner and outer walls of the cylindrical workpiece of the present invention includes a worktable 1, a driving assembly 2 disposed on the worktable 1, and a feeding assembly 3 disposed on the worktable 1. The drive assembly 2 includes a first fixed base 201, a first support roller 202, a connecting shaft 209, a rotating frame 210, a connecting bar 211, and a pressure roller 212; The feeding assembly 3 includes a feeding hopper 301 and a fixing bar 302. The feeding hopper 301 is fixedly connected to the worktable 1, the fixing bar 302 is fixedly connected to the feeding hopper 301, and the feeding hopper 303 is fixedly connected to the fixing bar 302. The feeding hopper 301 and the feeding hopper 303 together form an "eight"-shaped structure. Two connecting shafts 209 are rotatably connected to the feeding hopper 303. A U-shaped rotating frame 210 is fixedly connected to the two connecting shafts 209. Multiple connecting bars 211 are linearly arrayed and fixedly connected to the rotating frame 210. Pressure rollers 212 for pressing down cylindrical workpieces are rotatably connected to the connecting bars 211. A first gear 309 is fixedly connected to one of the connecting shafts 209. A first rotating shaft 310 and a second rotating shaft 313 are rotatably connected to the feeding hopper 303. A first gear 309 with an arc-shaped cross-section is fixedly connected to the first rotating shaft 310. A stop bar 311 is fixedly connected to a second stop bar 314 with an arc-shaped cross section. A second gear 312 is fixedly connected to the end of the first rotating shaft 310. A third gear 315 is fixedly connected to the end of the second rotating shaft 313. A fixed plate 316 is fixedly connected to the hopper 303. A second driving member 317 is fixedly connected to the fixed plate 316. A driving bar 318 with a "rocker" shaped cross section is fixedly connected to the telescopic end of the second driving member 317. A first rack 319, a second rack 320, and a third rack 321 are fixedly connected to the driving bar 318. The first rack 319 meshes with the first gear 309, the second rack 320 meshes with the second gear 312, and the third rack 321 meshes with the third gear 315. The first rack 319 and the third rack 321 are on the same side and on the opposite side from the second rack 320.The cylindrical workpiece to be polished is placed into the unloading hopper 301. The workpiece rolls along the "V"-shaped channel to the lower end of the loading hopper 303. The second drive unit 317 (preferably a hydraulic cylinder) is activated. When its telescopic end retracts, it drives the drive bar 318 to slide along the guide shaft 323. The first rack 319 on the drive bar 318 drives the first gear 309 and the connecting shaft 209 to rotate, thereby causing the rotating frame 210 to drive the multiple pressure rollers 212 on it to swing downwards and press the bottommost workpiece. After the workpiece polishing is completed and it is unloaded, the second drive unit 317 retracts, driving the drive bar 318 to slide, which in turn drives the rotating frame 210 to rotate. The rotating frame 210 drives the pressure rollers 212 to swing upwards. At the same time, the first rack 319 and the second rack 320 are on opposite sides. Therefore, the second rack 320 and the third rack 321 drive the first gear 319 and the second rack 320 to swing upwards respectively. The second gear 312 and the third gear 315 rotate, causing the first rotating shaft 310 and the second rotating shaft 313 to rotate in opposite directions. This causes the first stop bar 311 to open and the second stop bar 314 to close (blocking the workpieces to be processed behind). Only a single workpiece that is being pressed is allowed to roll out of the loading station and fall into the support area formed by the first support roller 202 and the second support roller 205. Then the second drive component 317 resets, the pressure roller 212 descends, presses the workpiece, the first stop bar 311 closes, and the second stop bar 314 opens. The workpiece to be processed rolls to the first stop bar 311. This process is repeated to complete the single-piece loading. The height of the guide frame 306 can be adjusted by rotating the handwheel 307, thereby fine-tuning the pressing position of the pressure roller 212 to adapt to workpieces of different diameters, while avoiding the jumping of cylindrical workpieces that affect the unloading. Two first fixed seats 201 are fixedly connected to the workbench 1. First support rollers 202 are rotatably connected to the two first fixed seats 201. A U-shaped lifting seat 203 is slidably connected to the workbench 1. Two second fixed seats 204 are fixedly connected to the lifting seat 203. A second support roller 205 is rotatably connected between the two second fixed seats 204. Two fixed blocks 322 are fixedly connected to the feeding hopper 303. Two guide shafts 323 are fixedly connected between the two fixed blocks 322. A guide block 324 is fixedly connected to one side of the drive bar 318. The guide block 324 is slidably connected to the guide shaft 323. A fixed frame 304 is fixedly connected to the top of the feeding hopper 303. A first screw 305 is threadedly connected to the fixed frame 304. Four guides are slidably connected to the fixed frame 304. The bottom ends of the four guide columns 308 are fixedly connected to guide frames 306. The first screw 305 is rotatably connected to the guide frame 306, and the top end of the first screw 305 is fixedly connected to a handwheel 307. The worktable 1 is fixedly connected to a first drive component 207. The end of the first support roller 202 is fixedly connected to a first pulley 206. The output end of the first drive component 207 is fixedly connected to a second pulley 208. The first pulley 206 and the second pulley 208 are driven by a belt. During polishing, the first drive component 207 (preferably a motor) is started, and the first support roller 202 is driven to rotate through the first pulley 206, the second pulley 208 and the belt drive, thereby driving the workpiece to rotate at a uniform speed. According to the polishing process requirements, the inner polishing component 5 and the outer polishing component 6 are controlled to operate.

[0022] Specifically, such as Figure 7 , Figure 8 , Figure 9 and Figure 12As shown, a feeding assembly 4 is provided on the workbench 1. The feeding assembly 4 includes a connecting plate 401 and a third driving component 402. The connecting plate 401 is fixedly connected inside the workbench 1, and the third driving component 402 is fixedly connected to the connecting plate 401. The telescopic end of the third driving component 402 is fixedly connected to the lifting seat 203. A mounting shaft 404 is fixedly connected to the workbench 1, and a connecting frame 405 is rotatably connected to the mounting shaft 404. A torsion spring 410 is fixedly connected between the connecting frame 405 and the workbench 1. Multiple push rollers 406 are linearly arrayed and rotatably connected to the connecting frame 405. The push rollers 406 are located on the side of the cylindrical workpiece away from the feeding hopper 301. Multiple inclined driving plates 407 are linearly arrayed and fixedly connected to the bottom end of the connecting frame 405. Multiple mounting strips 408 are linearly arrayed and fixedly connected to the lifting seat 203. A driving wheel 409 is rotatably connected to the bottom end of the mounting strip 408. The driving wheel 409 is tumblingly connected to the drive plate 407; the bottom end of the lifting seat 203 is fixedly connected to the guide rod 403, which is slidably connected to the connecting plate 401; when polishing is completed, the first drive component 207 stops, the third drive component 402 retracts, driving the lifting seat 203 to descend. During the descent of the lifting seat 203, the drive wheel 409 fixed on it rolls along the inclined drive plate 407 on the connecting frame 405, forcing the connecting frame 405 to swing outward around the mounting shaft 404, thereby causing the multiple push wheels 406 on the connecting frame 405 to push the polished workpiece forward, causing it to roll off the second support roller 205, and then roll to the upper end of the inclined unloading hopper 301, and be transported from the unloading hopper 301 to the cylindrical workpiece transfer and collection box, completing the automatic unloading. After the lifting seat 203 is reset, the connecting frame 405 swings back under the action of the torsion spring 410, preparing for the next work cycle.

[0023] Specifically, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 and Figure 11As shown, the workbench 1 is equipped with an internal projection assembly 5, which includes a first slide rail 501 and a first sliding sleeve 502. Two first slide rails 501 are fixedly connected to the workbench 1, and two first sliding sleeves 502 are slidably connected to each first slide rail 501. A first slide table 503 is fixedly connected to the four first sliding sleeves 502. Two third fixed seats 504 are fixedly connected to the workbench 1, and a second screw 505 is rotatably connected between the two third fixed seats 504. A first threaded seat 506 is fixedly connected to the bottom end of the first slide table 503, and the second screw 505 is threadedly connected to the first threaded seat 506. A fourth driving member 507 is fixedly connected to one of the third fixed seats 504, and the output end of the fourth driving member 507 is fixedly connected to the second screw 505. A fifth driving member 508 is fixedly connected to the first slide table 503, and a third pulley 509 is fixedly connected to the output end of the fifth driving member 508. A side plate 510 is fixedly connected, and a first rotating seat 511 is fixedly connected to the side plate 510. A first rotating rod 512 is rotatably connected to the first rotating seat 511. A fourth pulley 513 is fixedly connected to one end of the first rotating rod 512. A third pulley 509 and a fourth pulley 513 are driven by a belt. An inner polishing wheel 514 is fixedly connected to the other end of the first rotating rod 512. A fourth driving member 507 (preferably a motor) drives a second screw 505 to rotate, which drives a first slide table 503 to move along a first slide rail 501 through a first threaded seat 506, adjusting the inner polishing wheel 514 to the axial starting position of the workpiece's inner hole. A fifth driving member 508 (preferably a motor) drives the first rotating rod 512 and the inner polishing wheel 514 to rotate at high speed through the third pulley 509, the fourth pulley 513, and the belt drive, extending into the workpiece's inner hole for polishing. The inner polishing wheel 514 can be controlled to feed along the workpiece's axial direction by the fourth driving member 507. The workbench 1 is equipped with an external throwing assembly 6, which includes a second slide rail 601 and a second sliding sleeve 602. Two second slide rails 601 parallel to the direction of the first support roller 202 are fixedly connected to the workbench 1. Two second sliding sleeves 602 are slidably connected to each second slide rail 601. A second slide table 603 is fixedly connected to the four second sliding sleeves 602. Two third slide rails 608 perpendicular to the direction of the second slide rails 601 are fixedly connected to the second slide table 603. Two third sliding sleeves 609 are slidably connected to each third slide rail 608. A third slide table 610 is fixedly connected to the top of the four third sliding sleeves 609. A mounting bracket 615 is fixedly connected to the third slide table 610. A second rotating base 617 is fixedly connected, and a second rotating rod 618 is rotatably connected to the second rotating base 617. One end of the second rotating rod 618 is fixedly connected to an outer throwing wheel 621, and the other end of the second rotating rod 618 is fixedly connected to a fifth pulley 619. An eighth driving component 616 is fixedly connected to a mounting bracket 615, and a sixth pulley 620 is fixedly connected to the output end of the eighth driving component 616. The fifth pulley 619 and the sixth pulley 620 are driven by a belt. Two fourth fixed seats 604 are fixedly connected to the worktable 1, and a third screw 605 is rotatably connected between the two fourth fixed seats 604. A sixth driving component 607 is fixedly connected to one of the fourth fixed seats 604. The sixth driving component 607 is fixedly connected to the third screw 605. A second threaded seat 606 is fixedly connected to the bottom end of the second slide 603. The third screw 605 is threadedly connected to the second threaded seat 606. Two fifth fixed seats 611 are fixedly connected to the second slide 603, and a fourth screw 612 is rotatably connected between the two fifth fixed seats 611. A third threaded seat 613 is fixedly connected to the bottom end of the third slide 610, and the fourth screw 612 is threadedly connected to the third threaded seat 613. A seventh driving component 614 is fixedly connected to one of the fifth fixed seats 611, and the output end of the seventh driving component 614 is fixedly connected to the fourth screw 612. The sixth driving component 607 (preferably a motor) drives the third screw... The rod 605 rotates, driving the second slide 603 to move along the second slide rail 601 via the second threaded seat 606, adjusting the position of the outer polishing wheel 621 in the length direction of the workpiece. The seventh driving member 614 (preferably a motor) drives the fourth screw 612 to rotate, driving the third slide 610 and mounting bracket 615 to move along the third slide rail 608 via the third threaded seat 613, adjusting the radial distance of the outer polishing wheel 621 relative to the workpiece, so that the outer polishing wheel 621 contacts the workpiece. The eighth driving member 616 (preferably a motor) drives the second rotating rod 618 and the outer polishing wheel 621 to rotate at high speed via the fifth pulley 619, the sixth pulley 620 and belt drive, polishing the outer wall of the workpiece. The inner and outer polishing can be performed simultaneously.

[0024] In use, the invention first involves loading and positioning: the cylindrical workpiece to be polished is placed into the unloading hopper 301, and the workpiece rolls along the figure-eight shaped channel to the lower end of the loading hopper 303. The second driving component 317 (preferably a hydraulic cylinder) is activated; when its telescopic end retracts, it drives the driving bar 318 to slide along the guide shaft 323. The first rack 319 on the driving bar 318 drives the first gear 309 and the connecting shaft 209 to rotate, thereby causing the rotating frame 210 to drive the multiple pressure rollers 212 on it to swing downwards, pressing the lowest workpiece. After the workpiece polishing is completed and the workpiece is unloaded, the second driving component 317 retracts, driving the driving bar 318 to slide, which in turn drives the rotating frame 210 to rotate. The rotating frame 210 drives the pressure rollers 212 to swing upwards. Simultaneously, the first rack 319 and the second rack 320 are on opposite sides; therefore, the second rack 320 and... The third rack 321 drives the second gear 312 and the third gear 315 to rotate, causing the first rotating shaft 310 and the second rotating shaft 313 to rotate in opposite directions. This causes the first stop bar 311 to open and the second stop bar 314 to close (blocking the workpieces to be processed behind). Only a single workpiece that is being pressed is allowed to roll out of the loading station and fall into the support area formed by the first support roller 202 and the second support roller 205. Then the second drive component 317 resets, the pressure roller 212 descends, presses the workpiece, the first stop bar 311 closes, and the second stop bar 314 opens. The workpiece to be processed rolls to the first stop bar 311. This process is repeated to complete the single-piece loading. The height of the guide frame 306 can be adjusted by rotating the handwheel 307, thereby fine-tuning the pressing position of the pressure roller 212 to adapt to workpieces of different diameters, while avoiding the jumping of cylindrical workpieces that affect the unloading. Then, polishing is performed. During polishing, the first drive unit 207 (preferably a motor) is activated, driving the first support roller 202 to rotate via the first pulley 206, the second pulley 208, and belt drive, thereby causing the workpiece to rotate at a uniform speed. According to the polishing process requirements, the actions of the inner polishing component 5 and the outer polishing component 6 are controlled. For inner polishing: the fourth drive unit 507 (preferably a motor) drives the second screw 505 to rotate, driving the first slide table 503 to move along the first slide rail 501 via the first threaded seat 506, adjusting the inner polishing wheel 514 to the axial starting position of the workpiece's inner hole. The fifth drive unit 508 (preferably a motor) drives the first rotating rod 512 and the inner polishing wheel 514 to rotate at high speed via the third pulley 509, the fourth pulley 513, and belt drive, extending into the workpiece's inner hole for polishing. This can be controlled by the fourth drive unit 507. The inner polishing wheel 514 is fed along the workpiece axial direction; for the outer polishing: the sixth driving member 607 (preferably a motor) drives the third screw 605 to rotate, and drives the second slide table 603 to move along the second slide rail 601 through the second threaded seat 606, adjusting the position of the outer polishing wheel 621 in the length direction of the workpiece; the seventh driving member 614 (preferably a motor) drives the fourth screw 612 to rotate, and drives the third slide table 610 and the mounting bracket 615 to move along the third slide rail 608 through the third threaded seat 613, adjusting the distance of the outer polishing wheel 621 relative to the radial direction of the workpiece, so that the outer polishing wheel 621 abuts against the workpiece; the eighth driving member 616 (preferably a motor) drives the second rotating rod 618 and the outer polishing wheel 621 to rotate at high speed through the fifth pulley 619, the sixth pulley 620 and the belt drive, polishing the outer wall of the workpiece. The inner and outer polishing can be performed simultaneously; Finally, unloading is performed. After polishing is completed, the first drive component 207 stops, the third drive component 402 retracts, and the lifting seat 203 descends. During the descent of the lifting seat 203, the drive wheel 409 fixed on it rolls along the inclined drive plate 407 on the connecting frame 405, forcing the connecting frame 405 to swing outward around the mounting shaft 404. This causes the multiple push wheels 406 on the connecting frame 405 to push the polished workpiece forward, causing it to roll off the second support roller 205 and then roll to the upper end of the inclined unloading hopper 301. The workpiece is then transported from the unloading hopper 301 to the cylindrical workpiece transfer and collection box, completing the automatic unloading. After the lifting seat 203 is reset, the connecting frame 405 swings back under the action of the torsion spring 410, preparing for the next work cycle.

[0025] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0026] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for polishing the inner and outer walls of a cylindrical workpiece, characterized in that, Including workbench (1), drive assembly (2) arranged on the workbench (1), feeding assembly (3) arranged on the workbench (1); The drive assembly (2) comprises a first fixed seat (201), a first supporting roller (202), a connecting shaft (209), a rotating frame (210), a connecting strip (211) and a pressing wheel (212); The feeding assembly (3) comprises a lower hopper (301) and a fixed strip (302), the workbench (1) is fixedly connected with the lower hopper (301), the lower hopper (301) is fixedly connected with the fixed strip (302), the fixed strip (302) is fixedly connected with the upper hopper (303), the lower hopper (301) and the upper hopper (303) jointly form a "eight" shaped structure, the upper hopper (303) is rotatably connected with two connecting shafts (209), one of the connecting shafts (209) is fixedly connected with a first gear (309), the upper hopper (303) is rotatably connected with a first rotating shaft (310) and a second rotating shaft (313), the first rotating shaft (310) is fixedly connected with a first blocking strip (311) with arc cross section, the second rotating shaft (313) is fixedly connected with a second blocking strip (314) with arc cross section, the end of the first rotating shaft (310) is fixedly connected with a second gear (312), the end of the second rotating shaft (313) is fixedly connected with a third gear (315), the upper hopper (303) is fixedly connected with a fixed plate (316), the fixed plate (316) is fixedly connected with a second driving piece (317), the telescopic end of the second driving piece (317) is fixedly connected with a driving strip (318) with "rocker" cross section, the driving strip (318) is fixedly connected with a first gear rack (319), a second gear rack (320) and a third gear rack (321), the first gear rack (319) is engaged with the first gear (309), the second gear rack (320) is engaged with the second gear (312), the third gear rack (321) is engaged with the third gear (315), the first gear rack (319) and the third gear rack (321) are located on the same side and the second gear rack (320) is located on the opposite side.

2. The apparatus of claim 1 wherein: The workbench (1) is fixedly connected with two first fixed seats (201), the first supporting roller (202) is rotatably connected with the first fixed seat (201), the workbench (1) is slidably connected with a lifting seat (203) with U-shaped cross section, the lifting seat (203) is fixedly connected with two second fixed seats (204), the second supporting roller (205) is rotatably connected between the second fixed seats (204).

3. The apparatus of claim 1 wherein: The upper feeding hopper (303) is fixedly connected with two fixed blocks (322), two fixed blocks (322) are fixedly connected with two guide shafts (323), one side of the driving strip (318) is fixedly connected with a guide block (324), and the guide block (324) is in sliding connection with the guide shaft (323).

4. The apparatus of claim 1 wherein: The top end of the upper feeding hopper (303) is fixedly connected with a fixed frame (304), the fixed frame (304) is threadedly connected with a first screw rod (305), the fixed frame (304) is slidably connected with four guide columns (308), the bottom ends of the four guide columns (308) are fixedly connected with a guide frame (306), the first screw rod (305) is in rotary connection with the guide frame (306), and the top end of the first screw rod (305) is fixedly connected with a hand wheel (307).

5. The apparatus of claim 4 wherein: The first support roller (202) is fixedly connected with a first driving member (207), the first support roller (202) is fixedly connected with a first belt pulley (206), the output end of the first driving member (207) is fixedly connected with a second belt pulley (208), and the first belt pulley (206) and the second belt pulley (208) are in belt transmission.

6. The apparatus of claim 2 wherein: The workbench (1) is provided with a discharging assembly (4), the discharging assembly (4) comprises a connecting plate (401) and a third driving member (402), the inside of the workbench (1) is fixedly connected with the connecting plate (401), the connecting plate (401) is fixedly connected with the third driving member (402), the telescopic end of the third driving member (402) is fixedly connected with the lifting seat (203), the workbench (1) is fixedly connected with a mounting shaft (404), the mounting shaft (404) is rotatably connected with a connecting frame (405), the connecting frame (405) and the workbench (1) are fixedly connected with a torsion spring (410), a plurality of push wheels (406) are linearly and arrayedly rotatably connected to the connecting frame (405), the push wheels (406) are arranged on the side, away from the discharging hopper (301), of the cylindrical workpiece, the bottom end of the connecting frame (405) is linearly and arrayedly fixedly connected with a plurality of driving plates (407) arranged in an inclined manner, the lifting seat (203) is linearly and arrayedly fixedly connected with a plurality of mounting strips (408), the bottom end of the mounting strip (408) is rotatably connected with a driving wheel (409), and the driving wheel (409) is in rolling connection with the driving plate (407).

7. The apparatus of claim 6 wherein: The bottom end of the lifting seat (203) is fixedly connected with a guide rod (403), and the guide rod (403) is in sliding connection with the connecting plate (401).

8. The apparatus of claim 1 wherein: The workbench (1) is provided with an inner throwing assembly (5), the inner throwing assembly (5) includes first sliding rail (501) and first sliding sleeve (502), the workbench (1) is fixedly connected with two first sliding rail (501), each first sliding rail (501) is slidably connected with two first sliding sleeve (502), four first sliding sleeve (502) are fixedly connected with first sliding platform (503), the workbench (1) is fixedly connected with two third fixed seat (504), two third fixed seat (504) are rotatably connected with second screw rod (505), the bottom of first sliding platform (503) is fixedly connected with first screw seat (506), second screw rod (505) is threadedly connected with first screw seat (506), one third fixed seat (504) is fixedly connected with fourth drive element (507), the output of fourth drive element (507) is fixedly connected with second screw rod (505), the first sliding platform (503) is fixedly connected with fifth drive element (508), the output of fifth drive element (508) is fixedly connected with third belt pulley (509), the first sliding platform (503) is fixedly connected with side plate (510), the side plate (510) is fixedly connected with first rotating seat (511), the first rotating seat (511) is rotatably connected with first rotating rod (512), one end of first rotating rod (512) is fixedly connected with fourth belt pulley (513), the third belt pulley (509) and fourth belt pulley (513) are driven by belt, the other end of first rotating rod (512) is fixedly connected with inner throwing wheel (514).

9. The apparatus of claim 1 wherein: The workbench (1) is provided with an outer throwing assembly (6), the outer throwing assembly (6) comprises a second sliding rail (601) and a second sliding sleeve (602), the workbench (1) is fixedly connected with two second sliding rails (601) parallel to the direction of the first supporting roller (202), each second sliding rail (601) is slidably connected with two second sliding sleeves (602), four second sliding sleeves (602) are fixedly connected with a second sliding table (603), the second sliding table (603) is fixedly connected with two third sliding rails (608) perpendicular to the direction of the second sliding rail (601), each third sliding rail (608) is slidably connected with two third sliding sleeves (609), the top ends of the four third sliding sleeves (609) are fixedly connected with a third sliding table (610), the third sliding table (610) is fixedly connected with a mounting frame (615), the mounting frame (615) is fixedly connected with a second rotating seat (617), the second rotating seat (617) is rotatably connected with a second rotating rod (618), one end of the second rotating rod (618) is fixedly connected with an outer throwing wheel (621), the other end of the second rotating rod (618) is fixedly connected with a fifth belt pulley (619), the mounting frame (615) is fixedly connected with an eighth driving element (616), the output end of the eighth driving element (616) is fixedly connected with a sixth belt pulley (620), the fifth belt pulley (619) and the sixth belt pulley (620) are driven by a belt.

10. The apparatus of claim 9 wherein: The workbench (1) is fixedly connected with two fourth fixed seats (604), the two fourth fixed seats (604) are rotatably connected with a third screw rod (605), one of the fourth fixed seats (604) is fixedly connected with a sixth driving element (607), the sixth driving element (607) is fixedly connected with the third screw rod (605), the bottom end of the second sliding table (603) is fixedly connected with a second threaded seat (606), the third screw rod (605) is threadedly connected with the second threaded seat (606), the second sliding table (603) is fixedly connected with two fifth fixed seats (611), the two fifth fixed seats (611) are rotatably connected with a fourth screw rod (612), the bottom end of the third sliding table (610) is fixedly connected with a third threaded seat (613), the fourth screw rod (612) is threadedly connected with the third threaded seat (613), one of the fifth fixed seats (611) is fixedly connected with a seventh driving element (614), the output end of the seventh driving element (614) is fixedly connected with the fourth screw rod (612).

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