A polishing device for machining a shaft of an air compressor

Abstract

The application discloses a polishing equipment for air compressor manufacturing shaft rod processing and relates to the technical field of polishing equipment. The polishing equipment comprises a sliding block, the sliding block is in sliding connection with a moving assembly, the top of the sliding block is fixedly connected with a square plate, the outer surface of the square plate is rotatably connected with a circular block, a through hole is formed in the outer side of the end of the circular block away from the square plate, and the inner part of the through hole is in sliding connection with a fixing piece. The polishing equipment for air compressor manufacturing shaft rod processing, by means of the electric push rod working to push the clamping blocks to move in the inner part of the through hole towards the shaft rod in the middle, the multiple clamping blocks can clamp and fix the two ends of the shaft rod, the two-end fixing provides bidirectional constraint for the shaft, reduces the radial and axial displacement of the shaft when rotating or under stress, reduces the vibration and deformation risk, meanwhile, by adjusting the spacing between the two sliding blocks, the size of the chuck and other parameters, the polishing equipment can be flexibly adapted to various shaft workpieces without frequent replacement of equipment or customization of special tooling.

Description

Technical Field

[0001] This invention relates to the field of polishing equipment technology, specifically to a polishing device for machining shafts manufactured from air compressors. Background Technology

[0002] Polishing is a processing method that uses mechanical, chemical, or electrochemical processes to reduce the surface roughness of a workpiece, thereby obtaining a bright and smooth surface. It involves using polishing tools and abrasive particles or other polishing media to refine the surface of a workpiece. Polishing does not improve the dimensional or geometric accuracy of a workpiece; rather, it aims to achieve a smooth surface or a mirror-like finish, and is sometimes used to eliminate shine (matte finish). Polishing wheels are typically used as the polishing tool. Polishing wheels are generally made of multiple layers of canvas, felt, or leather, clamped on both sides by metal discs, and their rims are coated with a polishing compound consisting of a uniform mixture of micro-powdered abrasive particles and grease.

[0003] Traditional polishing equipment for shaft processing is not convenient for fixing shafts of different sizes, which affects the applicability of the equipment. It also cannot quickly fix the shaft, which affects the working efficiency of the equipment. At the same time, during the polishing process, the shaft is easily deformed, scratched or damaged due to compression, which affects the quality of the shaft. Summary of the Invention

[0004] To achieve the above objectives, the present invention is implemented through the following technical solution: a polishing device for machining shafts of air compressors, comprising a moving component and a frame fixedly installed at the bottom of the moving component;

[0005] The grinding component is slidably connected to the moving component, and the grinding component and the moving component are set perpendicularly;

[0006] The fixed components are slidably mounted on top of the moving components. There are two fixed components, and the two ends can be adjusted and fixed to make the polishing force evenly distributed, reduce abnormal stress on tools and equipment, thereby extending the service life of tools such as polishing wheels and sanding belts, as well as key equipment components such as spindles and bearings, reducing the frequency of tool replacement and equipment maintenance costs, and improving overall production efficiency. The two fixed components are symmetrically arranged at both ends of the moving components.

[0007] The fixed component includes a slider, which is slidably connected to the moving component. A square plate is fixedly connected to the top of the slider, and a circular block is rotatably connected to the outer surface of the square plate. According to the length of the shaft to be processed, the two sliders at both ends of the support block move towards the middle of the support block, so that the sliders at both ends drive the square plate and the circular block to the designated position. Then, the two ends of the shaft to be processed are placed inside the inner cavities of the two circular blocks at both ends of the support block. The electric actuator pushes the clamping block to move towards the shaft in the middle inside the through hole, so that multiple clamping blocks clamp and fix the two ends of the shaft. The fixation at both ends provides bidirectional constraint for the shaft, reducing the radial and axial displacement of the shaft when rotating or under force, reducing the risk of vibration and deformation. At the same time, by adjusting the distance between the two sliders, the size of the chuck, and other parameters, it can flexibly adapt to various shaft workpieces without frequently changing equipment or customizing special tooling. A through hole is opened on the outer side of the circular block away from the square plate, and a fixing component is slidably connected inside the through hole.

[0008] Preferably, the fixing element includes a clamping block located inside the through hole. The clamping block is slidably connected to the circular block through the through hole. An electric actuator is fixedly connected to the inner wall of the through hole, and the output end of the electric actuator is fixedly connected to the clamping block.

[0009] Preferably, the top of the frame is fixedly connected with two fixing blocks. The two fixing blocks are symmetrically arranged with the moving component as the center. The opposite sides of the fixing blocks are provided with slots. The fixing blocks are slidably connected to the grinding component through the slots. The moving component is located at the interval between the two fixing blocks.

[0010] Preferably, the moving component includes a fixed frame, which is fixedly connected to the top of the frame. Two blocks are fixedly connected to the top of the fixed frame, symmetrically arranged around the grinding component. A support block is fixedly connected to the top of the fixed frame, perpendicular to the blocks. The support block and the side groove form a top track and a side track, respectively driving the fixed component and the grinding component to move vertically and horizontally. This makes the polishing trajectory more flexible, meeting the polishing requirements of shaft-type workpieces, and avoiding the polishing blind spots or excessive wear caused by the single-track movement of traditional equipment. By setting the top track and the side track, the track can effectively constrain the movement. The moving parts have degrees of freedom, maintaining stable polishing spacing and pressure, ensuring processing accuracy, ensuring that the polishing trajectory is parallel to the workpiece axis, improving the uniformity of cylindrical surface polishing, and avoiding polishing position deviation due to motion deviation. There are two support blocks, which are symmetrically arranged at both ends of the block. The top of the support block has a trapezoidal groove, and the trapezoidal block is located inside the trapezoidal groove. The slider is slidably connected to the trapezoidal groove on the support block through the trapezoidal block. There are two side grooves on the outside of the fixed frame, which are symmetrically arranged on both sides of the fixed frame near the fixed block. The inside of the side groove is fixedly connected to a fixed rod, which is parallel to the support block.

[0011] Preferably, the slider has a U-shaped design. Two trapezoidal blocks are fixedly connected to the side of the slider away from the square plate, symmetrically positioned at both ends of the slider's opening. A motor is fixedly connected to the middle of the side of the square plate away from the circular block, and a positioning rod is fixedly connected to the middle of the side of the circular block near the motor. The motor's output end passes through the square plate and is fixedly connected to the positioning rod on the circular block. An inner cavity, trapezoidal in shape, is formed in the middle of the circular block, with its diameter gradually decreasing from the motor towards the circular block. An inclined groove is formed on the inner wall of the inner cavity, alternating with through holes on the circular block. A limit block is slidably connected to the inner wall of the inclined groove. A compression spring is fixedly connected to the inner wall of the inclined groove near the square plate, and the end of the compression spring away from the inclined groove is fixedly connected to the limit block. A roller, made of rubber, is rotatably connected to the outer side of the limit block away from the inclined groove to prevent scratches, indentations, or other damage to the shaft from rigid collisions. The shaft contacts and presses against the roller inside the inner cavity. The compression spring is compressed, causing the limiting block to drive the roller to slide inside the inclined groove. This places the end of the shaft inside the inner cavity. Under the elastic force of the compression spring, the roller fits tightly against the outer side of the shaft. By setting multiple rollers and utilizing their rolling characteristics, the shaft can be quickly adjusted to a suitable position, achieving initial positioning and support, and placing the shaft in a relatively stable position. On this basis, the electric actuator pushes the clamping block to apply precise pressure, firmly fixing the shaft from multiple directions, ensuring that the shaft has no displacement or shaking during processing. This step-by-step operation can eliminate shaft position deviations that may be caused by direct force clamping, improve positioning accuracy, and ensure the accuracy and consistency of subsequent polishing or transmission. There are three inclined grooves, which are evenly distributed on the circular block. There are three square holes at the bottom of the inner wall of the inner cavity, which are evenly distributed on the circular block. A round rod is fixedly connected inside the square hole, and the round rod is slidably connected to the fixing part.

[0012] Preferably, a stepped block is fixedly connected to the outer side of the clamping block near the electric actuator. A circular hole is provided on the outer side of the clamping block. Depending on the length of the shaft to be processed, two sliders at both ends of the support block move towards the center of the support block, causing the sliders at both ends to move the square plate and the circular block to a designated position. Then, the two ends of the shaft to be processed are placed inside the inner cavities of the two circular blocks at both ends of the support block. The shaft contacts and is pressed against the rollers inside the inner cavities. The compression spring is compressed, causing the limiting block to drive the rollers to slide inside the inclined groove, thereby allowing the shaft to... The end is located inside the inner cavity. Under the elastic force of the compression spring, the roller is tightly fitted to the outer side of the shaft. Then, the electric actuator pushes the clamping block to move along the round rod inside the square hole, so that the clamping block clamps the shaft. By alternately setting the roller and the clamping block, the roller and the clamping block are distributed to different parts of the shaft's axial outer side, avoiding local stress concentration. The round rod is located inside the round hole, and the clamping block is slidably connected to the round rod through the round hole. The stepped block is located at the end of the clamping block away from the round hole, and a groove is opened on the side of the clamping block away from the stepped block.

[0013] Preferably, the grinding assembly includes a frame, with a protrusion fixedly connected to the middle of the outer side of the frame. The protrusion is located inside the groove, and there are two protrusions symmetrically arranged around the frame. A movable block is fixedly connected to the middle of the inner side of the frame, located inside the side groove. The movable blocks are symmetrically arranged on the frame, with the protrusion and the movable block on the same horizontal plane. A circular hole is opened inside the movable block, and a fixing rod is located inside the circular hole. Two hydraulic cylinders are fixedly connected to the top of the outer side of the frame. After the shaft is installed, the hydraulic cylinders drive the grinding parts at the output end to move towards the shaft, so that the two grinding parts in the vertical direction contact the upper and lower parts of the shaft respectively. Then, the motor is connected to an external power supply and operates. The motor drives the circular... The rotating block causes the circular block to drive the shaft to rotate. At this time, the grinding component grinds the outer side of the shaft. Simultaneously, the frame moves on the moving component through the protrusion and the moving block, so that the grinding component can perform comprehensive grinding on the outer surface of the shaft. By symmetrically setting the grinding components, the upper and lower grinding components simultaneously contact the outer surface of the shaft, forming a bidirectional clamping force. This can effectively counteract the shaft offset or vibration caused by unidirectional force during polishing, ensuring uniform distribution of grinding pressure and avoiding local over-grinding or under-grinding. Furthermore, the upper and lower grinding components can form a rigid constraint on the shaft, limiting its radial runout and axial movement, ensuring that the shaft axis remains stable during polishing, and improving the dimensional and positional tolerances such as cylindricity and straightness. At the same time, the upper and lower grinding components fit against the circumferential surface of the shaft, and in conjunction with the rotation of the shaft, full-circumference continuous polishing can be achieved, eliminating the blind spots of traditional single-sided grinding, ensuring consistent surface roughness and uniform gloss of the shaft. The hydraulic cylinders are symmetrically set in the vertical direction of the frame, and the output end of the hydraulic cylinder is fixedly connected to the grinding component, which is located inside the frame.

[0014] Preferably, the grinding component includes a connecting plate. The top of the connecting plate is fixedly connected to the output end of the hydraulic cylinder. A return spring is fixedly connected to the bottom of the connecting plate. A connecting frame is fixedly connected to the end of the return spring away from the connecting plate. A connecting rod is fixedly connected to the top of the connecting frame, passing through the connecting plate. The return spring is sleeved on the outside of the connecting rod. An extension plate is fixedly connected to the outside of the connecting frame near the connecting rod. A motor is fixedly connected to the outside of the connecting frame. A grinding roller is rotatably connected inside the connecting frame. The hydraulic cylinder drives the connecting plate to move downwards until the grinding roller contacts the outer surface of the shaft. At this point, the elasticity of the return spring ensures that the grinding roller inside the connecting frame is tightly fitted to the outer surface of the shaft. Subsequently, the motor, powered by an external power source, operates, driving the grinding roller to rotate, thereby grinding the shaft. Simultaneously, the arc plates on both sides drive the pressure roller to contact the shaft, and the arc plates support the connecting frame. Its function is to suppress radial runout during high-speed rotation, avoid impact or severe local friction between the grinding roller and the shaft caused by centrifugal force, and keep the grinding roller and shaft parallel through geometric constraints to avoid uneven grinding caused by axial misalignment. The output end of the motor is fixedly connected to the grinding roller, and a cleaning plate is fixedly connected to the bottom of the inner wall of the connecting frame. By setting the cleaning plate, the grinding roller is cleaned, avoiding the residue of waste on the surface of the grinding roller, reducing the damage of waste to the grinding roller, and extending the service life of the grinding roller. The end of the cleaning plate away from the inside of the connecting frame contacts the grinding roller. An arc plate is rotatably connected to the inner wall of the connecting frame near the extension plate. There are two arc plates, which are symmetrically arranged with the connecting frame as the center. A pressure roller is rotatably connected to the end of the arc plate away from the connecting frame. A spring plate is fixedly connected to the top of the arc plate near the extension plate, and the end of the spring plate away from the arc plate is fixedly connected to the extension plate.

[0015] This invention provides a polishing device for machining shafts used in the manufacture of air compressors. It offers the following advantages:

[0016] I. The polishing equipment for shaft processing manufactured by this air compressor clamps and fixes both ends of the shaft with multiple clamping blocks. Fixing both ends provides bidirectional constraint for the shaft, reducing radial and axial displacement of the shaft when rotating or under force, reducing the risk of vibration and deformation. At the same time, by adjusting parameters such as the distance between the two sliders and the size of the chuck, it can flexibly adapt to various types of shaft workpieces without the need for frequent equipment changes or customized special tooling.

[0017] II. The polishing equipment for shaft processing manufactured by this air compressor effectively constrains the freedom of moving parts through top and side tracks, maintains stable polishing spacing and pressure, ensures processing accuracy, ensures that the polishing trajectory is parallel to the workpiece axis, improves the uniformity of cylindrical surface polishing, and avoids polishing position deviation due to movement deviation.

[0018] Third, the polishing equipment for shaft processing manufactured by this air compressor, by setting multiple rollers, utilizes the rolling characteristics of the rollers to quickly adjust the shaft to a suitable position, achieving initial positioning and support, and placing the shaft in a relatively stable position. On this basis, the electric actuator pushes the clamping block to apply precise pressure, firmly fixing the shaft from multiple directions, ensuring that the shaft has no displacement or shaking during processing. This step-by-step operation can eliminate shaft position deviation that may be caused by direct force clamping.

[0019] IV. The polishing equipment for shaft processing manufactured by this air compressor uses symmetrically arranged grinding parts to simultaneously contact the outer surface of the shaft, forming a bidirectional clamping force. This effectively counteracts shaft offset or vibration caused by unidirectional force during polishing, ensuring uniform distribution of grinding pressure and avoiding local over-grinding or under-grinding. Furthermore, the upper and lower grinding parts can form a rigid constraint on the shaft, limiting its radial runout and axial movement, ensuring that the shaft axis remains stable throughout the polishing process. Attached Figure Description

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

[0021] Figure 2 This is a schematic diagram of the structure of the moving component of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of the fixing component of the present invention;

[0023] Figure 4 This is a cross-sectional structural schematic diagram of the fixing component of the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of the fastener of the present invention;

[0025] Figure 6 This is a partial structural schematic diagram of the present invention;

[0026] Figure 7 This is a schematic diagram of the grinding component of the present invention;

[0027] Figure 8 This is a schematic diagram of the structure of the grinding part of the present invention;

[0028] Figure 9 This is a schematic diagram of the grinding part of the present invention viewed from below.

[0029] In the diagram: 1. Frame; 2. Moving component; 21. Fixed frame; 22. Block; 23. Side groove; 24. Fixed rod; 25. Support block; 26. Trapezoidal groove; 3. Fixed component; 31. Slider; 32. Trapezoidal block; 33. Square plate; 34. Motor; 35. Circular block; 36. Inner cavity; 37. Through hole; 38. Fixing component; 381. Clamping block; 382. Groove; 383. Stepped block; 384. Circular hole; 385. Electric actuator; 39. Inclined groove; 310. Limiting block; 311. Compression spring; 312. Roller; 313. Square hole; 314. Round rod; 315. Positioning rod; 4. Grinding assembly; 41. Frame; 42. Protrusion; 43. Moving block; 44. Circular hole; 45. Hydraulic cylinder; 46. Grinding part; 461. Connecting plate; 462. Connecting rod; 463. Return spring; 464. Extension plate; 465. Connecting frame; 466. Arc plate; 467. Pressure roller; 468. Spring plate; 469. Motor; 4610. Grinding roller; 4611. Cleaning plate; 5. Fixing block; 6. Groove. Detailed Implementation

[0030] 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.

[0031] First embodiment, such as Figures 1 to 5 As shown, the present invention provides a technical solution: a polishing device for processing shafts of air compressors, including a moving component 2 and a frame 1 fixedly installed at the bottom of the moving component 2;

[0032] Grinding component 4 is slidably connected to moving component 2 and is set perpendicular to moving component 2;

[0033] Fixed component 3 is slidably installed on the top of moving component 2. There are two fixed components 3. The two ends can be adjusted and fixed to make the polishing force evenly distributed, reduce abnormal stress on tools and equipment, thereby extending the service life of tools such as polishing wheels and sanding belts, as well as key equipment components such as spindles and bearings, reducing the frequency of tool replacement and equipment maintenance costs, and improving overall production efficiency. The two fixed components 3 are symmetrically arranged at both ends of moving component 2.

[0034] The fixed component 3 includes a slider 31, which is slidably connected to the moving component 2. A square plate 33 is fixedly connected to the top of the slider 31, and a circular block 35 is rotatably connected to the outer surface of the square plate 33. According to the length of the shaft to be processed, the two sliders 31 at both ends of the support block 25 move towards the middle of the support block 25, so that the sliders 31 at both ends drive the square plate 33 and the circular block 35 to the designated position. Then, the two ends of the shaft to be processed are placed inside the inner cavity 36 of the two circular blocks 35 at both ends of the support block 25, and the electric actuator 385 pushes it. The clamping block 381 moves towards the center of the shaft inside the through hole 37, so that multiple clamping blocks 381 clamp and fix the two ends of the shaft. The fixation at both ends provides bidirectional constraint for the shaft, reducing the radial and axial displacement of the shaft when rotating or under force, reducing the risk of vibration and deformation. At the same time, by adjusting parameters such as the distance between the two sliders 31 and the size of the chuck, it can flexibly adapt to various shaft workpieces without the need for frequent equipment changes or custom-made special tooling. The outer side of the circular block 35 away from the square plate 33 has a through hole 37, and the inside of the through hole 37 is slidably connected to the fixing part 38.

[0035] The fixing member 38 includes a clamping block 381, which is located inside the through hole 37. The clamping block 381 is slidably connected to the circular block 35 through the through hole 37. An electric push rod 385 is fixedly connected to the inner wall of the through hole 37, and the output end of the electric push rod 385 is fixedly connected to the clamping block 381.

[0036] The top of the frame 1 is fixedly connected to a fixing block 5. There are two fixing blocks 5. The two fixing blocks 5 are symmetrically arranged with the moving component 2 as the center. The opposite sides of the fixing blocks 5 are provided with slots 6. The fixing blocks 5 are slidably connected to the grinding component 4 through the slots 6. The moving component 2 is located at the interval between the two fixing blocks 5.

[0037] The moving component 2 includes a fixed frame 21, which is fixedly connected to the top of the frame 1. Two blocks 22 are fixedly connected to the top of the fixed frame 21, symmetrically arranged around the grinding component 4. A support block 25 is fixedly connected to the top of the fixed frame 21, perpendicular to the blocks 22. The support block 25 and the side groove 23 form a top track and a side track, respectively driving the fixed component 3 and the grinding component 4 to move vertically and horizontally. This makes the polishing trajectory more flexible, meeting the polishing requirements of shaft-type workpieces and avoiding the polishing blind spots or excessive wear caused by the single-track movement of traditional equipment. By setting the top track and the side track, the tracks can effectively constrain the degrees of freedom of the moving parts. To maintain stable polishing spacing and pressure, ensure processing accuracy, ensure that the polishing trajectory is parallel to the workpiece axis, improve the uniformity of cylindrical surface polishing, and avoid polishing position deviation due to movement deviation, there are two support blocks 25, which are symmetrically arranged at both ends of the block 22. The top of the support block 25 is provided with a trapezoidal groove 26, and the trapezoidal block 32 is located inside the trapezoidal groove 26. The slider 31 is slidably connected to the trapezoidal groove 26 on the support block 25 through the trapezoidal block 32. The outer side of the fixed frame 21 is provided with a side groove 23, and there are two side grooves 23, which are symmetrically arranged on both sides of the fixed frame 21 near the fixed block 5. The inside of the side groove 23 is fixedly connected with a fixed rod 24, which is arranged parallel to the support block 25.

[0038] The second embodiment is based on the first embodiment; please refer to [link / reference]. Figures 3 to 5As shown, the slider 31 has a U-shaped design. A trapezoidal block 32 is fixedly connected to the side of the slider 31 away from the square plate 33. There are two trapezoidal blocks 32, symmetrically arranged at both ends of the opening of the slider 31. A motor 34 is fixedly connected to the middle of the side of the square plate 33 away from the circular block 35. A positioning rod 315 is fixedly connected to the middle of the side of the circular block 35 closest to the motor 34. The output end of the motor 34 passes through the square plate 33 and is fixedly connected to the positioning rod 315 on the circular block 35. An inner cavity 36 is formed in the middle of the interior of the circular block 35. The inner cavity 36 is trapezoidal in shape. The diameter of the inner cavity 36 gradually decreases from the motor 34 towards the circular block 35. An inclined groove 39 is formed on the inner wall of the inner cavity 36. The inclined groove 39 and through hole 37 are alternately arranged on the circular block 35. A limit block 310 is slidably connected to the inner wall of the inclined groove 39. A compression spring 311 is fixedly connected to the inner wall of the inclined groove 39 near the square plate 33. The end of the compression spring 311 away from the inclined groove 39 is fixedly connected to the limit block 310. A roller 312 is rotatably connected to the outer side of the limit block 310 away from the inclined groove 39. The roller 312 is made of rubber to prevent scratches, indentations, or other damage to the shaft from rigid collisions. The shaft and inner... Inside cavity 36, rollers 312 contact and compress, and compression spring 311 is compressed, causing limiting block 310 to drive rollers 312 to slide inside inclined groove 39. This places the end of the shaft inside cavity 36. Under the elastic force of compression spring 311, rollers 312 are tightly fitted to the outside of shaft. By setting multiple rollers 312, the rolling characteristics of rollers 312 can be used to quickly adjust the shaft to a suitable position, achieving initial positioning and support, and placing the shaft in a relatively stable position. On this basis, electric actuator 385 pushes clamping block 381 to apply precise pressure from multiple... The direction is firmly fixed to the shaft to ensure that the shaft does not shift or wobble during processing. This step-by-step operation can eliminate the shaft position deviation that may be caused by direct strong clamping, improve positioning accuracy, and ensure the accuracy and consistency of subsequent polishing or transmission. There are three inclined grooves 39, which are evenly distributed on the circular block 35. The bottom of the inner wall of the inner cavity 36 is provided with three square holes 313, which are evenly distributed on the circular block 35. A round rod 314 is fixedly connected inside the square hole 313, and the round rod 314 is slidably connected to the fixing part 38.

[0039] A stepped block 383 is fixedly connected to the outside of the clamping block 381 near the electric actuator 385. A circular hole 384 is opened on the outside of the clamping block 381. According to the length of the shaft to be processed, the two sliders 31 at both ends of the support block 25 move towards the middle of the support block 25, so that the sliders 31 at both ends drive the square plate 33 and the circular block 35 to the designated position. Then, the two ends of the shaft to be processed are placed inside the inner cavity 36 of the two circular blocks 35 at both ends of the support block 25. The shaft contacts and is pressed with the roller 312 inside the inner cavity 36. The compression spring 311 is compressed, so that the limiting block 310 drives the roller 312 to slide inside the inclined groove 39, thereby making the end of the shaft located inside the inner cavity 36. Under the elastic force of the compression spring 311, the roller 312 fits tightly against the outer side of the shaft. Then, the electric actuator 385 pushes the clamping block 381 to move along the round rod 314 inside the square hole 313, so that the clamping block 381 clamps the shaft. By alternately setting the roller 312 and the clamping block 381, the roller 312 and the clamping block 381 are distributed to different parts of the axial outer side of the shaft, avoiding local stress concentration. The round rod 314 is located inside the round hole 384. The clamping block 381 is slidably connected to the round rod 314 through the round hole 384. The stepped block 383 is located at the end of the clamping block 381 away from the round hole 384. A groove 382 is opened on the side of the clamping block 381 away from the stepped block 383.

[0040] The third embodiment is based on embodiments one and two; please refer to [link / reference]. Figures 6 to 9As shown, the grinding assembly 4 includes a frame 41. A protrusion 42 is fixedly connected to the middle of the outer side of the frame 41. The protrusion 42 is located inside the groove 6. There are two protrusions 42, which are symmetrically arranged with the frame 41 as the center. A movable block 43 is fixedly connected to the middle of the inner side of the frame 41. The movable block 43 is located inside the side groove 23 and is symmetrically arranged on the frame 41. The protrusion 42 and the movable block 43 are located on the same horizontal plane. A circular hole 44 is opened inside the movable block 43. A fixing rod 24 is located inside the circular hole 44. A hydraulic cylinder 45 is fixedly connected to the top of the outer side of the frame 41. There are two hydraulic cylinders 45. After the shaft is installed, the hydraulic cylinder 45 drives the grinding part 46 at the output end to move towards the shaft, so that the two grinding parts 46 in the vertical direction contact the upper and lower parts of the shaft respectively. Then the motor 34 is connected to an external power supply and starts working. The machine 34 operates by rotating the circular block 35 via the positioning rod 315, which in turn rotates the shaft. At this time, the grinding element 46 grinds the outer surface of the shaft. Simultaneously, the frame 41 moves on the moving assembly 2 via the protrusion 42 and the moving block 43, allowing the grinding element 46 to perform comprehensive grinding on the outer surface of the shaft. The symmetrical arrangement of the grinding elements 46 ensures that both elements simultaneously contact the outer surface of the shaft, creating a bidirectional clamping force. This effectively counteracts shaft offset or vibration caused by unidirectional force during polishing, ensuring uniform grinding pressure distribution and preventing localized over- or under-grinding. Furthermore, the upper and lower grinding elements 46 provide rigid constraints on the shaft, limiting its radial runout and axial movement, ensuring the shaft axis remains stable throughout the polishing process and improving dimensional and positional tolerances such as cylindricity and straightness. Simultaneously, the upper and lower grinding elements 46 conform to the circumferential surface of the shaft, coordinating with the shaft's rotation to achieve 360° grinding. Full-circle continuous polishing eliminates the blind spots of traditional single-sided polishing, ensuring consistent surface roughness and uniform gloss of the shaft. Hydraulic cylinders 45 are symmetrically arranged in the vertical direction of frame 41, and the output end of hydraulic cylinder 45 is fixedly connected to polishing component 46, which is located inside frame 41.

[0041] The grinding component 46 includes a connecting plate 461. The top of the connecting plate 461 is fixedly connected to the output end of the hydraulic cylinder 45. A return spring 463 is fixedly connected to the bottom of the connecting plate 461. A connecting frame 465 is fixedly connected to the end of the return spring 463 away from the connecting plate 461. A connecting rod 462 is fixedly connected to the top of the connecting frame 465. The connecting rod 462 passes through the connecting plate 461. The return spring 463 is sleeved on the outside of the connecting rod 462. An extension plate 464 is fixedly connected to the outside of the connecting frame 465 near the end of the connecting rod 462. An electric motor is fixedly connected to the outside of the connecting frame 465. The grinding roller 4610 is rotatably connected inside the connecting frame 465 of the machine 469. The hydraulic cylinder 45 drives the connecting plate 461 to move downward until the grinding roller 4610 contacts the outer surface of the shaft. At this time, the elasticity of the return spring 463 makes the grinding roller 4610 inside the connecting frame 465 fit tightly against the outer surface of the shaft. Then, the motor 469 is connected to an external power source and drives the grinding roller 4610 to rotate, thereby grinding the shaft. At the same time, the arc plates 466 on both sides drive the pressure roller 467 to contact the shaft. The arc plates support the connecting frame 465. The system can suppress radial runout during high-speed rotation, preventing impact or severe local friction between the grinding roller 4610 and the shaft due to centrifugal force. Furthermore, the arc plate 466 uses geometric constraints to keep the grinding roller 4610 parallel to the shaft, preventing uneven grinding caused by axial misalignment. The output end of the motor 469 is fixedly connected to the grinding roller 4610. A cleaning plate 4611 is fixedly connected to the bottom of the inner wall of the connecting frame 465. By setting the cleaning plate 4611, the grinding roller 4610 is cleaned, preventing residual debris on its surface and reducing the impact of debris on the grinding roller 4610. To extend the service life of the grinding roller 4610, the cleaning plate 4611 is in contact with the grinding roller 4610 at one end away from the inside of the connecting frame 465. An arc plate 466 is rotatably connected to the inner wall of the connecting frame 465 near the extension plate 464. There are two arc plates 466, which are symmetrically arranged with the connecting frame 465 as the center. A pressure roller 467 is rotatably connected to one end of the arc plate 466 away from the connecting frame 465. A spring plate 468 is fixedly connected to the top of the arc plate 466 near the extension plate 464. The end of the spring plate 468 away from the arc plate 466 is fixedly connected to the extension plate 464.

[0042] In use, according to the length of the shaft to be processed, the two sliders 31 at both ends of the support block 25 move towards the middle of the support block 25, so that the sliders 31 at both ends drive the square plate 33 and the round block 35 to the designated position. Then, the two ends of the shaft to be processed are placed inside the inner cavity 36 of the two round blocks 35 at both ends of the support block 25. The electric push rod 385 works to push the clamping block 381 to move towards the shaft in the middle inside the through hole 37, so that the multiple clamping blocks 381 clamp and fix the two ends of the shaft.

[0043] After the shaft is installed, the hydraulic cylinder 45 drives the grinding parts 46 at the output end to move towards the shaft, so that the two grinding parts 46 in the vertical direction contact the upper and lower parts of the shaft respectively. Then, the motor 34 is powered by an external power source. The motor 34 drives the circular block 35 to rotate through the positioning rod 315, so that the circular block 35 drives the shaft to rotate. At this time, the grinding parts 46 grind the outer side of the shaft. At the same time, the frame 41 moves on the moving assembly 2 through the protrusion 42 and the moving block 43, so that the grinding parts 46 can perform comprehensive grinding on the outer surface of the shaft.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A polishing device for machining shafts used in the manufacture of air compressors, characterized in that, include: The movable component (2) and the frame (1) fixedly installed at the bottom of the movable component (2); A polishing component (4) is slidably connected to a moving component (2), and the polishing component (4) and the moving component (2) are arranged perpendicularly to each other. Fixed component (3), which is slidably mounted on the top of the movable component (2), and there are two fixed components (3), which are symmetrically arranged at both ends of the movable component (2); The fixing component (3) includes a slider (31), which is slidably connected to the moving component (2). A square plate (33) is fixedly connected to the top of the slider (31), and a circular block (35) is rotatably connected to the outer surface of the square plate (33). A through hole (37) is opened on the outer side of the circular block (35) away from the square plate (33), and a fixing member (38) is slidably connected inside the through hole (37). A motor (34) is fixedly connected to the middle of the side of the square plate (33) away from the circular block (35). A positioning rod (315) is fixedly connected to the middle of the side of the circular block (35) close to the motor (34). The output end of the motor (34) passes through the square plate (33) and is fixedly connected to the positioning rod (315) on the circular block (35). An inner cavity (36) is opened in the middle of the interior of the circular block (35). The inner cavity (36) is trapezoidal, and the diameter of the inner cavity (36) gradually decreases from the motor (34) toward the circular block (35). An inclined groove (39) is opened on the inner wall of the inner cavity (36). The inclined groove (39) and the through hole (37) are alternately arranged on the circular block (35). The inner wall of the inclined groove (39) is slidably connected to a limiting block (310). A compression spring (311) is fixedly connected to the inner wall of the inclined groove (39) near the square plate (33). The end of the compression spring (311) away from the inclined groove (39) is fixedly connected to the limiting block (310). A roller (312) is rotatably connected to the outer side of the limiting block (310) away from the inclined groove (39). There are three inclined grooves (39). The three inclined grooves (39) are evenly distributed on the circular block (35). A square hole (313) is opened at the bottom of the inner wall of the inner cavity (36). There are three square holes (313). The three square holes (313) are evenly distributed on the circular block (35). A round rod (314) is fixedly connected inside the square hole (313). The round rod (314) is slidably connected to the fixing member (38). The fixing member (38) includes a clamping block (381), which is located inside the through hole (37). The clamping block (381) is slidably connected to the circular block (35) through the through hole (37). An electric push rod (385) is fixedly connected to the inner wall of the through hole (37). The output end of the electric push rod (385) is fixedly connected to the clamping block (381). The clamping block (381) is fixedly connected to a stepped block (383) near the outer side of the electric push rod (385). A circular hole (384) is provided on the outer side of the clamping block (381). The circular rod (314) is located inside the circular hole (384). The clamping block (381) is slidably connected to the circular rod (314) through the circular hole (384). The stepped block (383) is located at the end of the clamping block (381) away from the circular hole (384). A groove (382) is provided on the side of the clamping block (381) away from the stepped block (383).

2. The polishing equipment for machining shafts in air compressor manufacturing according to claim 1, characterized in that: The top of the frame (1) is fixedly connected to a fixing block (5). There are two fixing blocks (5). The two fixing blocks (5) are symmetrically arranged with the moving component (2) as the center. The opposite sides of the fixing blocks (5) are provided with slots (6). The fixing blocks (5) are slidably connected to the grinding component (4) through the slots (6). The moving component (2) is located at the interval between the two fixing blocks (5).

3. The polishing equipment for machining shafts in air compressor manufacturing according to claim 2, characterized in that: The slider (31) is U-shaped. A trapezoidal block (32) is fixedly connected to the side of the slider (31) away from the square plate (33). There are two trapezoidal blocks (32), which are symmetrically arranged at both ends of the opening of the slider (31).

4. The polishing equipment for machining shafts in air compressor manufacturing according to claim 3, characterized in that: The moving component (2) includes a fixed frame (21), which is fixedly connected to the top of the frame (1). A block (22) is fixedly connected to the top of the fixed frame (21). There are two blocks (22), symmetrically arranged around the grinding component (4). A support block (25) is fixedly connected to the top of the fixed frame (21), perpendicular to the block (22). There are two support blocks (25), symmetrically arranged at both ends of the block (22). The top of the support block (25) is provided with a trapezoidal groove (26), the trapezoidal block (32) is located inside the trapezoidal groove (26), the slider (31) is slidably connected to the trapezoidal groove (26) on the support block (25) through the trapezoidal block (32), the outer side of the fixed frame (21) is provided with a side groove (23), there are two side grooves (23), the two side grooves (23) are symmetrically arranged on both sides of the fixed frame (21) near the fixed block (5), the inside of the side groove (23) is fixedly connected with a fixing rod (24), the fixing rod (24) is arranged parallel to the support block (25).

5. A polishing device for machining shafts in air compressor manufacturing according to claim 4, characterized in that: The polishing assembly (4) includes a frame (41), a protrusion (42) is fixedly connected to the middle of the outer side of the frame (41), the protrusion (42) is located inside the groove (6), there are two protrusions (42), the two protrusions (42) are symmetrically arranged with the frame (41) as the center, and a moving block (43) is fixedly connected to the middle of the inner side of the frame (41), the moving block (43) is located inside the side groove (23).

6. A polishing device for machining shafts in air compressor manufacturing according to claim 5, characterized in that: The movable block (43) is symmetrically arranged on the frame (41). The protrusion (42) and the movable block (43) are located on the same horizontal plane. The movable block (43) has a circular hole (44) inside. The fixed rod (24) is located inside the circular hole (44). A hydraulic cylinder (45) is fixedly connected to the top of the outer side of the frame (41). There are two hydraulic cylinders (45). The hydraulic cylinders (45) are symmetrically arranged in the vertical direction of the frame (41). A grinding part (46) is fixedly connected to the output end of the hydraulic cylinder (45). The grinding part (46) is located inside the frame (41).

7. A polishing device for machining shafts in air compressor manufacturing according to claim 6, characterized in that: The grinding component (46) includes a connecting plate (461), the top of which is fixedly connected to the output end of a hydraulic cylinder (45). A return spring (463) is fixedly connected to the bottom of the connecting plate (461). A connecting frame (465) is fixedly connected to the end of the return spring (463) away from the connecting plate (461). A connecting rod (462) is fixedly connected to the top of the connecting frame (465). The connecting rod (462) passes through the connecting plate (461). The return spring (463) is fixedly connected to the bottom of the connecting plate (461). 463) Sleeve on the outside of the connecting rod (462), the connecting frame (465) is fixedly connected to the outside of one end of the connecting rod (462) with an extension plate (464), the outside of the connecting frame (465) is fixedly connected to a motor (469), the inside of the connecting frame (465) is rotatably connected to a grinding roller (4610), the output end of the motor (469) is fixedly connected to the grinding roller (4610), and the bottom of the inner wall of the connecting frame (465) is fixedly connected to a cleaning plate (4611).

8. A polishing device for machining shafts in air compressor manufacturing according to claim 7, characterized in that: The cleaning plate (4611) is in contact with the grinding roller (4610) at one end away from the inside of the connecting frame (465). The connecting frame (465) is rotatably connected to the inner wall of the extension plate (464). There are two arc plates (466), which are symmetrically arranged with the connecting frame (465) as the center. The end of the arc plate (466) away from the connecting frame (465) is rotatably connected to the pressure roller (467). The top of the arc plate (466) near the extension plate (464) is fixedly connected to the spring plate (468). The end of the spring plate (468) away from the arc plate (466) is fixedly connected to the extension plate (464).

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