Surface finish machining treatment device and method for hydraulic oil cylinder

Abstract

The invention belongs to the field of hydraulic oil cylinder machining, and particularly relates to a hydraulic oil cylinder surface finish machining treatment device and method.The hydraulic oil cylinder surface finish machining treatment device comprises a base, the upper side of the base is fixedly connected with a mounting base of a circular ring structure, a machining table is rotationally arranged on the upper side of the mounting base, and a containing plate is rotationally arranged on the edge of the upper side of the machining table; a polishing disc is arranged above the containing plate, a driving mechanism used for driving the containing plate and the polishing disc to rotate oppositely is arranged on the machining table, a sand blasting assembly is arranged in the middle of the upper side of the machining table, and a positioning assembly is arranged above the machining table. The driving mechanism comprises a first rotating shaft rotationally arranged on the upper side of the machining table and internally of a hollow structure, and the upper end of the first rotating shaft is fixedly connected with the containing plate. The to-be-machined cylinder barrel can be driven to rotate, meanwhile, the inner surface and the outer surface of the cylinder barrel are subjected to sufficient polishing and sand blasting machining, the operation difficulty during cylinder barrel machining is lowered, the efficiency is improved, and meanwhile the cylinder barrel machining quality can be guaranteed.

Description

Technical Field

[0001] The invention belongs to the field of hydraulic cylinder processing, and in particular relates to a hydraulic cylinder surface finishing processing device and a processing method. Background Art

[0002] The surface finishing of hydraulic cylinders can significantly improve their performance and service life. Common parts of hydraulic cylinders that need finishing mainly include cylinder barrels and piston rods.

[0003] For the finishing of the cylinder, the inner and outer walls of the cylinder are mainly processed. In the prior art, the outer surface of the cylinder usually needs to be sprayed to increase the surface roughness, thereby enhancing the adhesion of the subsequent coating. At the same time, the inner surface of the cylinder needs to be polished to improve the smoothness of the inner wall of the cylinder and ensure the subsequent sealing.

[0004] At present, when processing cylinder barrels, generally, multiple cylinder barrels are first hoisted on a bracket, and then placed in a sandblasting box for sandblasting. After that, the sandblasted cylinder barrels are taken out and sent to a polishing station for polishing of the inner wall. The whole process is cumbersome, which greatly affects the processing efficiency when batch processing of hydraulic cylinders is performed. In addition, when sandblasting, the cylinder barrel is only hoisted in the sandblasting box by a simple bracket. The cylinder barrel can only rotate with the bracket and cannot rotate by itself, making it difficult for the side of the cylinder barrel away from the sandblasting nozzle to fully contact the sand material for processing. There is a dead angle for sandblasting, and the sandblasting quality needs to be improved. Summary of the invention

[0005] In view of the above problems, an embodiment of the present application provides a hydraulic cylinder surface finishing processing device and processing method, which can drive the cylinder to be processed to rotate and simultaneously fully polish and sandblast the inner and outer surfaces of the cylinder, respectively, thereby reducing the operating difficulty during cylinder processing and improving efficiency while ensuring the cylinder processing quality.

[0006] In order to achieve the above-mentioned purpose, the embodiment of the present application provides the following technical solutions: The present invention provides a surface finishing processing device for a hydraulic cylinder, comprising a base, a mounting seat in a circular ring structure is fixedly connected to the upper side of the base, a processing table is rotatably arranged on the upper side of the mounting seat, a placement plate is rotatably arranged on the upper edge of the processing table, a polishing disc is arranged above the placement plate, a driving mechanism for driving the placement plate and the polishing disc to rotate towards each other is arranged on the processing table, a sandblasting assembly is arranged in the middle of the upper side of the processing table, and a positioning assembly is arranged above the processing table. The driving mechanism comprises a first rotating shaft rotatably arranged on the upper side of the processing table and having a hollow structure inside, the upper end of the first rotating shaft is fixedly connected to the placement plate, a first gear ring is fixedly arranged on the outer wall of the lower end of the first rotating shaft, a second gear ring meshing with the first gear ring is fixedly arranged on the inner ring of the mounting seat, a second rotating shaft in a rectangular structure is fixedly connected to the lower side of the polishing disc, the first rotating shaft is movably sleeved on the surface of the second rotating shaft and is arranged concentrically, and a linkage assembly for driving the second rotating shaft to rotate is arranged on the lower edge of the processing table. The linkage assembly includes a mounting plate fixedly arranged on the lower side of the processing table and having an L-shaped structure, a first gear and a second gear that are meshed with each other are rotatably arranged on the lower side of the horizontal section of the mounting plate, the first gear is meshed with the second gear ring, a rectangular opening is opened on the surface of the second gear, a driving seat with a sloped structure on the upper side is fixedly arranged on the upper side of the base, the lower end of the second rotating shaft movably passes through the rectangular opening and is slidably connected to the slope of the driving seat.

[0007] According to a favorable embodiment, a plurality of first balls are rotatably arranged on the inner walls of the four sides of the rectangular opening, and the first balls are rollingly connected to the outer side walls corresponding to the second rotating shaft; a second ball is rotatably arranged on the lower end of the second rotating shaft, and the second ball is rollingly connected to the slope surface of the driving seat.

[0008] According to a favorable embodiment, two left-right symmetrical electric push rods are fixedly arranged on the upper side of the base, the telescopic ends of the two electric push rods are commonly fixedly connected to a sealing cover, and the positioning assembly is fixedly arranged in the sealing cover.

[0009] According to an advantageous embodiment, the positioning assembly comprises a connecting shaft fixedly arranged on the upper inner wall of the sealing cover, the lower end of the connecting shaft is rotatably connected to a top plate, and the lower side of the top plate abuts against the upper side of the cylinder.

[0010] According to a favorable embodiment, the sandblasting assembly includes a guide plate with a rectangular structure fixedly arranged in the middle of the upper side of the processing table, the surface of the guide plate is slidably connected to a slide seat, the surface of the slide seat is provided with a through hole with a rectangular structure, the guide plate is slidably arranged in the through hole, and a plurality of sandblasting nozzles are fixedly arranged on the outer wall of the slide seat.

[0011] According to a favorable embodiment, a third rotating shaft with a rectangular structure is slidably connected to the upper side of the processing table near the edge position, a push plate is provided at the upper end of the third rotating shaft, the upper side of the push plate abuts against the lower side of the slide seat, a third ball is rotatably provided at the lower end of the third rotating shaft, and the third ball is rollingly connected to the slope surface on the upper side of the driving seat.

[0012] According to a favorable embodiment, the surfaces of the multiple second rotating shafts and the surface of the third rotating shaft are both slidably provided with guide sleeves, and multiple fourth balls are rotatably provided on the four side inner walls of the guide sleeves. The fourth balls close to the second rotating shaft are rollingly connected to the outer side wall corresponding to the second rotating shaft, and the fourth balls close to the third rotating shaft are rollingly connected to the outer side wall corresponding to the third rotating shaft. The multiple guide sleeves are fixedly connected together by a connecting ring, and the connecting ring is fixedly connected to the lower side of the processing table.

[0013] According to a favorable embodiment, a first rotating hole connected to a rectangular opening on the surface of the second gear is formed on the surface of the horizontal section of the mounting plate, the second rotating shaft is rotatably disposed in the corresponding first rotating hole, a second rotating hole is formed on the edge of the processing table, the third rotating shaft is rotatably disposed in the second rotating hole, a driving motor is fixedly disposed in the middle portion of the upper side of the base, and the output shaft of the driving motor is fixedly connected to the lower side of the processing table.

[0014] According to a favorable embodiment, a sinking groove is provided in the middle of the upper side of the processing table, the lower end of the guide plate is fixedly arranged in the sinking groove, a discharge port penetrating the processing table is provided on the sinking groove, a sealing plug is provided on the inner thread of the discharge port, and a baffle with an arc structure is fixedly provided on the upper side of the placement plate, and the outer wall of the lower end of the cylinder is movably in contact with the inner ring of the baffle.

[0015] In addition, the present invention also provides a hydraulic cylinder surface finishing treatment method, which is completed in cooperation with the above-mentioned hydraulic cylinder surface finishing treatment device, and includes the following steps:

[0016] S1. Loading, place the cylinder on the placement plate.

[0017] S2, positioning, the sealing cover is lowered by contracting the electric push rod so that the sealing cover contacts the upper part of the mounting seat to seal the processing table, and at the same time, the positioning component contacts and limits the upper end of the cylinder.

[0018] S3, sandblasting and polishing, drive the processing table to rotate and cooperate with the driving mechanism to make the cylinder barrel rotate while driving the polishing disc and sandblasting assembly to move up and down to fully process the surface of the cylinder barrel.

[0019] S4, taking out the material. After the processing is completed, the electric push rod is extended to release the sealing cover from the processing table, and the processed cylinder can be taken out.

[0020] Compared with the prior art, the hydraulic cylinder surface finishing treatment device and treatment method provided by the embodiment of the present invention have the following beneficial effects:

[0021] 1. The present invention, through the cooperation of the driving mechanism with the processing table and the driving seat, can drive the cylinder to be processed to rotate and simultaneously fully polish and sandblast the inner and outer surfaces of the cylinder, thereby reducing the operating difficulty during cylinder processing, improving efficiency and ensuring the processing quality of the cylinder.

[0022] 2. In the present invention, the first gear ring can cooperate with the second gear ring on the mounting seat to drive the placement plate to rotate, and cooperate with the positioning assembly to enable the cylinder to rotate stably, so that all areas of the outer surface of the cylinder can be sandblasted in the direction of the sandblasting assembly, avoiding sandblasting dead corners and improving the sandblasting quality.

[0023] 3. In the present invention, the second gear ring can cooperate with the first gear and the second gear, so that the second rotating shaft can drive the polishing disc and the cylinder barrel to rotate in opposite directions, thereby improving the polishing effect of the polishing disc on the inner ring surface of the cylinder barrel.

[0024] 4. In the present invention, the lower ends of the second rotating shaft and the third rotating shaft are slidably connected to the slope surface on the upper side of the driving seat. When the processing table rotates to drive the second rotating shaft and the third rotating shaft to move along the track formed by the slope surface on the upper side of the driving seat, the second rotating shaft and the third rotating shaft can be continuously moved up and down, thereby driving the corresponding polishing discs and sandblasting nozzles to move along the axial direction of the cylinder for processing, thereby further ensuring the adequacy of the cylinder surface processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is an external three-dimensional structural diagram of the present invention.

[0026] Figure 2 It is a main cross-sectional plan view of the present invention.

[0027] Figure 3 It is an overall sectional three-dimensional structural diagram of the present invention.

[0028] Figure 4 It is a bottom-up stereoscopic structural diagram of the mounting base.

[0029] Figure 5 for Figure 4 A magnified view of the local structure.

[0030] Figure 6 It is a bottom plan view of the mounting seat in the present invention.

[0031] Figure 7 It is a cross-sectional three-dimensional structural diagram of the driving mechanism in the present invention.

[0032] The accompanying drawings are numerals in the figure: 1. base; 2. mounting seat; 3. processing table; 4. placement plate; 5. polishing disk; 6. driving mechanism; 61. first rotating shaft; 62. first gear ring; 63. second gear ring; 64. second rotating shaft; 65. linkage assembly; 651. mounting plate; 652. first gear; 653. second gear; 7. sandblasting assembly; 71. guide plate; 72. slide seat; 73. sandblasting nozzle; 8. positioning assembly; 81. connecting shaft; 82. top plate; 9. driving seat; 10. electric push rod; 11. sealing cover; 12. third rotating shaft; 13. push plate; 14. guide sleeve; 15. connecting ring; 16. first rotating hole; 17. second rotating hole; 18. driving motor; 19. sinking trough; 20. discharge port; 21. enclosure; 22. cylinder. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-7 This application is further described in detail.

[0034] Please refer to Figure 1 , Figure 2 and Figure 7 A surface finishing processing device for a hydraulic cylinder comprises a base 1, a mounting base 2 in a circular ring structure is fixedly connected to the upper side of the base 1 through a plurality of columns, a processing table 3 in a disc structure is rotatably arranged on the upper side of the mounting base 2, a driving motor 18 is fixedly arranged in the middle of the upper side of the base 1, and the output shaft of the driving motor 18 is fixedly connected to the lower side of the processing table 3. A plurality of placement plates 4 evenly distributed along the circumferential direction are rotatably arranged on the upper edge of the processing table 3, a baffle 21 in a circular arc structure is fixedly arranged on the upper side of the placement plate 4, and the lower end outer side wall of the cylinder barrel 22 movably contacts the inner ring of the baffle 21. A polishing disc 5 is arranged above the placement plate 4, a driving mechanism 6 for driving the placement plate 4 and the polishing disc 5 to rotate in opposite directions is arranged on the processing table 3, a sandblasting assembly 7 is arranged in the middle of the upper side of the processing table 3, a positioning assembly 8 for fixing the auxiliary cylinder 22 is arranged above the processing table 3, two electric push rods 10 symmetrically arranged on the upper side of the base 1, the telescopic ends of the two electric push rods 10 are fixedly connected to the sealing cover 11, and the positioning assembly 8 is fixedly arranged in the sealing cover 11. The staff places the cylinder 22 on the placement plate 4, the lower end of the cylinder 22 is limited by the enclosure 21, and then the electric push rod 10 shrinks, so that the upper sealing cover 11 can move down gradually close to the mounting seat 2 and finally seal the processing table 3, and at the same time, the positioning assembly 8 can synchronously resist and fix the upper end of the cylinder 22. At this time, the polishing disc 5 is inside the cylinder 22, and then the processing table 3 is driven to rotate by the driving motor 18. In cooperation with the driving mechanism 6, the placement plate 4 can drive the cylinder 22 to rotate, and cooperate with the sandblasting component 7 in the center area of ​​the processing table 3 to sandblast the surface of the cylinder 22. At the same time, it can also drive the polishing disc 5 inside the cylinder 22 to rotate in the opposite direction of the rotation of the cylinder 22 to polish the inside of the cylinder 22.

[0035] See also Figure 2 The positioning assembly 8 includes a connecting shaft 81 fixedly arranged on the inner wall of the upper side of the sealing cover 11, and the lower end of the connecting shaft 81 is rotatably connected to a top plate 82, and the lower side of the top plate 82 abuts against the upper side of the cylinder 22. The top plate 82 abuts against the upper side of the cylinder 22, and while limiting the position of the cylinder 22, it can rotate with the cylinder 22 to reduce friction.

[0036] See also Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The driving mechanism 6 includes a first rotating shaft 61 which is rotatably arranged on the upper side of the processing table 3 and has a hollow structure inside. The upper end of the first rotating shaft 61 is fixedly connected to the placement plate 4. A first gear ring 62 is fixedly arranged on the outer wall of the lower end of the first rotating shaft 61. A second gear ring 63 which meshes with the first gear ring 62 is fixedly arranged on the inner ring of the mounting seat 2. A second rotating shaft 64 with a rectangular structure is fixedly connected to the lower side of the polishing disk 5. The first rotating shaft 61 is movably sleeved on the surface of the second rotating shaft 64 and is arranged concentrically. A plurality of linkage components 65 for driving the second rotating shaft 64 to rotate are arranged on the lower edge of the processing table 3. The linkage assembly 65 includes a mounting plate 651 fixedly arranged at the lower side of the processing table 3 and having an L-shaped structure. The lower side of the horizontal section of the mounting plate 651 is rotatably provided with a first gear 652 and a second gear 653 meshing with each other. The first gear 652 meshes with the second gear ring 63. The surface of the second gear 653 is provided with a rectangular opening. The surface of the horizontal section of the mounting plate 651 is provided with a first rotating hole 16 connected with the rectangular hole. The second rotating shaft 64 is rotatably provided in the corresponding first rotating hole 16. The upper side of the base 1 is fixedly provided with a driving seat 9 having a slope structure on the upper side. The lower end of the second rotating shaft 64 movably passes through the rectangular opening and is slidably connected with the slope of the driving seat 9. A plurality of first balls are rotatably provided on the inner walls of the four sides of the rectangular opening. The first balls are rollingly connected with the outer side walls corresponding to the second rotating shaft 64.

[0037] See also Figure 2 and Figure 3 The sandblasting assembly 7 includes a guide plate 71 fixedly arranged in the middle of the upper side of the processing table 3 and having a rectangular structure. A slide seat 72 is slidably connected to the surface of the guide plate 71. A through hole in a rectangular structure is provided on the surface of the slide seat 72. The guide plate 71 is slidably arranged in the through hole. A plurality of sandblasting nozzles 73 are fixedly arranged on the outer wall of the slide seat 72. A third rotating shaft 12 in a rectangular structure is slidably connected to the upper side of the processing table 3 near the edge. A second rotating hole 17 is provided at the edge of the processing table 3. The third rotating shaft 12 is rotatably arranged in the second rotating hole 17. A push plate 13 is arranged at the upper end of the third rotating shaft 12. The upper side of the push plate 13 contacts the lower side of the slide seat 72. A third ball is rotatably arranged at the lower end of the third rotating shaft 12. The third ball is rollingly connected to the slope surface on the upper side of the driving seat 9.

[0038] In order to improve the processing efficiency and quality of the cylinder 22, the driving motor 18 drives the processing table 3 to rotate, which will cause the first gear ring 62 to move around the inner ring of the second gear ring 63. During the movement, the second gear ring 63 will drive the first gear ring 62 to rotate, thereby causing the first rotating shaft 61 fixedly connected to the first gear ring 62 to rotate, and the placement plate 4 at the upper end of the first rotating shaft 61 to rotate synchronously, so that the cylinder 22 on the placement plate 4 will rotate, and then the second gear ring 63 will also drive the first gear 652 to rotate at the same time, and the rotation of the first gear 652 drives the second gear 653 to rotate. Since the second rotating shaft 64 is movably inserted into the rectangular opening on the surface of the second gear 653, and the second rotating shaft 64 itself is a rectangular structure, the second gear 653 can synchronously drive the second rotating shaft 64 to rotate when rotating, so that the polishing disk 5 located inside the cylinder 22 at the upper end of the second rotating shaft 64 can rotate, and is reversed by the cooperation of the first gear 652 and the second gear 653. At this time, the rotation directions of the first rotating shaft 61 and the second rotating shaft 64 are opposite, and the rotation directions of the polishing disk 5 and the cylinder barrel 22 are opposite, so as to ensure the polishing quality. Meanwhile, during the rotation of the processing table 3, the rotation of the processing table 3 will synchronously drive the second rotating shaft 64 and the third rotating shaft 12 to move synchronously. During the movement of the second rotating shaft 64 and the third rotating shaft 12, the lower ends of the two are always in contact with the slope surface on the upper side of the driving seat 9. When the third rotating shaft 12 and the second rotating shaft 64 move along the track formed by the slope surface on the upper side of the driving seat 9, they will continuously move up and down under the action of gravity. The up and down movement of the second rotating shaft 64 can enable the polishing disk 5 to polish the inner ring surface of the cylinder barrel 22. The upward movement of the third rotating shaft 12 will cause the push plate 13 to move upward and drive the slide seat 72 to move upward, so that the sandblasting nozzle 73 can move upward. When the third rotating shaft 12 moves downward, the push plate 13 moves downward, and the slide seat 72 moves downward under the action of gravity, so that the sandblasting nozzle 73 can move up and down along the axial direction of the cylinder barrel 22. The surface of the continuously rotating cylinder barrel 22 is sandblasted upward and downward, thereby ensuring the processing quality of the cylinder barrel 22 and greatly improving the processing efficiency.

[0039] See also Figure 2 and Figure 3The surfaces of the multiple second rotating shafts 64 and the surfaces of the third rotating shaft 12 are all slidably sleeved with guide sleeves 14, and the inner walls of the four sides of the guide sleeve 14 are all rotatably provided with multiple fourth balls, and the fourth balls close to the second rotating shaft 64 are rollingly connected to the outer side wall corresponding to the second rotating shaft 64, and the fourth balls close to the third rotating shaft 12 are rollingly connected to the outer side wall corresponding to the third rotating shaft 12, and the multiple guide sleeves 14 are fixedly connected by a connecting ring 15, and the connecting ring 15 is fixedly connected to the lower side of the processing table 3. The guide sleeve 14 is relatively fixed to the processing table 3, and the fourth balls on the inner side wall of the guide sleeve 14 are rollingly connected to the corresponding second rotating shaft 64 or the third rotating shaft 12, which plays a role in guiding and supporting the second rotating shaft 64 or the third rotating shaft 12 and reducing friction, ensuring that the second rotating shaft 64 and the third rotating shaft 12 can move up and down smoothly.

[0040] See also Figure 2 , Figure 3 and Figure 6 A sinking groove 19 is provided in the middle of the upper side of the processing table 3, and the lower end of the guide plate 71 is fixedly arranged in the sinking groove 19. A discharge port 20 penetrating the processing table 3 is provided on the sinking groove 19, and a sealing plug is provided in the inner thread of the discharge port 20. The sand generated after sandblasting is concentrated in the sinking groove 19, and the staff regularly cleans the sand by opening the discharge port 20 and using the collection tool.

[0041] In addition, the present invention also provides a hydraulic cylinder surface finishing treatment method, which is completed in cooperation with the above-mentioned hydraulic cylinder surface finishing treatment device, and includes the following steps:

[0042] S1, loading, the staff places the cylinder 22 on the placement plate 4, and the lower end of the cylinder 22 is limited by the enclosure 21.

[0043] S2, positioning, the sealing cover 11 is lowered by contracting the electric push rod 10, so that the sealing cover 11 contacts the upper part of the mounting seat 2, and the processing table 3 is sealed. At the same time, the top plate 82 on the positioning component 8 can synchronously contact and fix the upper end of the cylinder 22.

[0044] S3, sandblasting and polishing, the processing table 3 is driven to rotate by the driving motor 18, and the rotation of the processing table 3 drives the first gear ring 62 to move around the inner ring of the second gear ring 63, so that the first gear ring 62 can rotate and drive the first rotating shaft 61 to rotate, and the fixed cylinder 22 is driven to rotate by the placement plate 4 at the upper end of the first rotating shaft 61. At the same time, the second gear ring 63 can cooperate with the first gear 652 and the second gear 653 to make the second rotating shaft 64 rotate, so that the polishing disk 5 and the cylinder 22 rotate in the same direction, and the second rotating shaft 64 and the third rotating shaft 12 are driven by the processing table 3. The drive seat 9 below allows the second rotating shaft 64 and the third rotating shaft 12 to move upstream and downstream, and the second rotating shaft 64 can drive the polishing disk 5 to move up and down, so that the polishing disk 5 moves axially along the cylinder 22 for polishing, and the third rotating shaft 12 drives the sandblasting nozzle 73 on the slide seat 72 to move up and down through the push plate 13 to perform sandblasting along the axial direction of the cylinder 22.

[0045] S4, taking out the material. After the processing is completed, the electric push rod 10 is extended so that the sealing cover 11 releases the sealing of the processing table 3, and the cylinder barrel 22 that has been processed can be taken out.

[0046] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A hydraulic cylinder surface finishing treatment device, comprising a base (1), characterized in that: A mounting seat (2) in a circular ring structure is fixedly connected to the upper side of the base (1); a processing table (3) is rotatably provided on the upper side of the mounting seat (2); a placement plate (4) is rotatably provided on the upper edge of the processing table (3); a polishing disc (5) is provided above the placement plate (4); a driving mechanism (6) for driving the placement plate (4) and the polishing disc (5) to rotate towards each other is provided on the processing table (3); a sandblasting assembly (7) is provided in the middle of the upper side of the processing table (3); and a positioning assembly (8) is provided above the processing table (3); The driving mechanism (6) comprises a first rotating shaft (61) which is rotatably arranged on the upper side of the processing table (3) and has a hollow structure inside. The upper end of the first rotating shaft (61) is fixedly connected to the placement plate (4). A first toothed ring (62) is fixedly arranged on the outer wall of the lower end of the first rotating shaft (61). A second toothed ring (63) which meshes with the first toothed ring (62) is fixedly arranged on the inner ring of the mounting seat (2). A second rotating shaft (64) with a rectangular structure is fixedly connected to the lower side of the polishing plate (5). The first rotating shaft (61) is movably sleeved on the surface of the second rotating shaft (64) and is arranged cocentrically. A linkage assembly (65) for driving the second rotating shaft (64) to rotate is arranged on the lower edge of the processing table (3). The linkage assembly (65) comprises a mounting plate (651) fixedly arranged on the lower side of the processing table (3) and having an L-shaped structure; a first gear (652) and a second gear (653) meshing with each other are rotatably arranged on the lower side of the horizontal section of the mounting plate (651); the first gear (652) meshes with the second gear ring (63); a rectangular opening is provided on the surface of the second gear (653); a driving seat (9) having a sloped structure on the upper side is fixedly arranged on the upper side of the base (1); the lower end of the second rotating shaft (64) movably passes through the rectangular opening and is slidably connected to the slope of the driving seat (9).

2. A hydraulic cylinder surface finishing treatment device according to claim 1, characterized in that: A plurality of first balls are rotatably arranged on the inner walls of the four sides of the rectangular opening, and the first balls are rollingly connected to the outer walls corresponding to the second rotating shaft (64); a second ball is rotatably arranged on the lower end of the second rotating shaft (64), and the second ball is rollingly connected to the slope surface of the driving seat (9).

3. The hydraulic cylinder surface finishing treatment device according to claim 1, characterized in that: Two left-right symmetrical electric push rods (10) are fixedly arranged on the upper side of the base (1), the telescopic ends of the two electric push rods (10) are fixedly connected to a sealing cover (11), and the positioning assembly (8) is fixedly arranged in the sealing cover (11).

4. A hydraulic cylinder surface finishing treatment device according to claim 3, characterized in that: The positioning assembly (8) comprises a connecting shaft (81) fixedly arranged on the upper inner wall of the sealing cover (11), the lower end of the connecting shaft (81) being rotatably connected to a top plate (82), the lower side of the top plate (82) being in contact with the upper side of the cylinder barrel (22).

5. The hydraulic cylinder surface finishing treatment device according to claim 1, characterized in that: The sandblasting assembly (7) comprises a guide plate (71) fixedly arranged in the middle of the upper side of the processing table (3) and having a rectangular structure, the surface of the guide plate (71) is slidably connected to a slide seat (72), the surface of the slide seat (72) is provided with a through hole in a rectangular structure, the guide plate (71) is slidably arranged in the through hole, and a plurality of sandblasting nozzles (73) are fixedly arranged on the outer wall of the slide seat (72).

6. A hydraulic cylinder surface finishing treatment device according to claim 5, characterized in that: A third rotating shaft (12) having a rectangular structure is slidably connected to the upper side of the processing table (3) near the edge position, and a push plate (13) is arranged at the upper end of the third rotating shaft (12), and the upper side of the push plate (13) abuts against the lower side of the sliding seat (72), and a third ball is rotatably arranged at the lower end of the third rotating shaft (12), and the third ball is rollingly connected to the slope surface on the upper side of the driving seat (9).

7. The hydraulic cylinder surface finishing treatment device according to claim 6, characterized in that: Guide sleeves (14) are slidably provided on the surfaces of the plurality of second rotating shafts (64) and the surface of the third rotating shaft (12); a plurality of fourth balls are rotatably provided on the inner walls of the four sides of the guide sleeves (14); the fourth balls close to the second rotating shaft (64) are rollingly connected to the outer side wall corresponding to the second rotating shaft (64); the fourth balls close to the third rotating shaft (12) are rollingly connected to the outer side wall corresponding to the third rotating shaft (12); the plurality of guide sleeves (14) are fixedly connected together by a connecting ring (15); and the connecting ring (15) is fixedly connected to the lower side of the processing table (3).

8. The hydraulic cylinder surface finishing treatment device according to claim 6, characterized in that: A first rotating hole (16) is provided on the surface of the horizontal section of the mounting plate (651) and is connected to a rectangular opening on the surface of the second gear (653); the second rotating shaft (64) is rotatably disposed in the corresponding first rotating hole (16); a second rotating hole (17) is provided on the edge of the processing table (3); the third rotating shaft (12) is rotatably disposed in the second rotating hole (17); a driving motor (18) is fixedly disposed in the middle of the upper side of the base (1); and the output shaft of the driving motor (18) is fixedly connected to the lower side of the processing table (3).

9. The hydraulic cylinder surface finishing treatment device according to claim 5, characterized in that: A sinking groove (19) is provided in the middle of the upper side of the processing table (3), the lower end of the guide plate (71) is fixedly arranged in the sinking groove (19), a discharge port (20) penetrating the processing table (3) is provided on the sinking groove (19), a sealing plug is provided in the inner thread of the discharge port (20), a circular arc structured enclosure (21) is fixedly provided on the upper side of the placement plate (4), and the lower end outer wall of the cylinder (22) is movably abutted against the inner ring of the enclosure (21).

10. A method for finishing the surface of a hydraulic cylinder, characterized in that: The surface finishing treatment device of a hydraulic cylinder as claimed in claim 3 is used to complete the process, including the following steps: S1, loading, placing the cylinder barrel (22) on the placement plate (4); S2, positioning, the sealing cover (11) is lowered by contracting the electric push rod (10), so that the sealing cover (11) contacts the upper part of the mounting seat (2), the processing table (3) is sealed, and at the same time, the positioning component (8) contacts and limits the upper end of the cylinder (22); S3, sandblasting and polishing, driving the processing table (3) to rotate and cooperate with the driving mechanism (6) so that the cylinder barrel (22) can rotate while driving the polishing disc (5) and the sandblasting assembly (7) to move up and down, so as to fully process the surface of the cylinder barrel (22); S4, taking out the material. After the processing is completed, the electric push rod (10) is extended so that the sealing cover (11) releases the seal on the processing table (3), and the cylinder barrel (22) that has been processed can be taken out.

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