Polishing machine

Abstract

The utility model belongs to the technical field of polishing equipment, and particularly relates to a polishing machine. The polishing machine comprises a rack, a first-stage lifting assembly, a horizontal adjusting assembly, a second-stage lifting assembly, an angle fine adjustment assembly, a polishing assembly and a rotating assembly. The polishing assembly comprises a motor mounting plate, a polishing motor, a driving belt wheel, a polishing air cylinder and a driven belt wheel which is in transmission connection with the driving belt wheel through a grinding belt. The angle fine adjustment assembly comprises a grinding head rotating plate, a first fine adjustment air cylinder and a second fine adjustment air cylinder. The position of the polishing assembly is adjusted through the first-stage lifting assembly, the second-stage lifting assembly and the horizontal adjusting assembly, angle fine adjustment is conducted on the polishing assembly through the fine adjustment assembly, the polishing assembly is made to be attached to the wall face of a to-be-polished workpiece all the time, and the to-be-polished workpiece is driven to rotate while being polished through the rotating assembly. And the automation degree is high, the polishing effect is good, the application range is wide, the polishing efficiency can be greatly improved, and manpower and material resources are saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of polishing equipment, and in particular relates to a polishing machine. Background Art

[0002] In the production process of various metal workpieces, there are often a large number of burrs, surface oxide layers, welds and other tiny defects when the workpieces are just produced, which not only affects the beauty of the workpieces, but also affects the use effect of some workpieces with high precision requirements. Therefore, polishing machines are usually used to grind and polish the workpieces to improve their beauty and workpiece precision. At present, in the processing and production process of workpieces, the inner and outer walls of some workpieces are not smooth enough to meet the requirements after processing. This requires a key step for the formed workpieces, that is, polishing the inner and outer walls of these workpieces. However, the main tool currently used for grinding and polishing operations is a handheld small electric angle grinder. After installing a grinding disc or a polishing head, it can be used to grind and polish various shapes and large and medium-sized workpieces. It has a wide range of uses, but this tool is manually operated, so the surface after processing is very uneven, and the efficiency is low, and it will affect the polishing quality of the workpiece. The grinding disc is easy to break during grinding, and it is very dangerous. There are also some grinding and polishing machines dedicated to grinding and polishing flat or tubular workpieces. This type of machine has a single function and cannot meet the multi-purpose requirements of workpiece shape changes. For this reason, we propose a polishing machine to solve the above problems. Utility Model Content

[0003] The purpose of the utility model is to overcome the defects of low manual grinding efficiency, uneven surface, poor quality and single function of existing polishing equipment in the prior art, and to provide a polishing machine with high automation, good polishing effect, which can greatly improve polishing efficiency and save manpower and material resources.

[0004] The technical solution adopted by the utility model to solve the technical problem is: a polishing machine, comprising a frame, a primary lifting component mounted on the frame, a horizontal adjustment component mounted on the primary lifting component, a secondary lifting component mounted at the end of the horizontal adjustment component, an angle fine-adjustment component mounted on the secondary lifting component, a polishing component mounted on the angle fine-adjustment component, and a rotating component used to drive a workpiece to be polished to rotate; the polishing component comprises: a motor mounting plate rotatably connected to the angle fine-adjustment component, a polishing motor mounted on the motor mounting plate, a driving pulley coaxially connected to an output shaft of the polishing motor, and A driven pulley is connected to the driving pulley through a grinding belt, and the driven pulley is installed on the end of the motor mounting plate through a mounting column; the angle fine-tuning assembly includes: the end of the secondary lifting assembly is rotatably connected to a grinding head rotating plate, and a first fine-tuning cylinder and a second fine-tuning cylinder are pinned on the grinding head rotating plate, a first through hole is provided on the grinding head rotating plate, the telescopic end of the first fine-tuning cylinder passes through the first through hole, a mounting hole is provided on the telescopic end of the first fine-tuning cylinder, a hinge pin passes through the mounting hole and its two ends are installed on the secondary lifting assembly, and the telescopic end of the second fine-tuning cylinder is hinged to the motor mounting plate.

[0005] Furthermore, the first-level lifting assembly includes: a first-level lifting motor installed on the top of the frame, a first-level lifting screw rod coaxially connected to the output shaft of the first-level lifting motor, a first-level lifting nut sleeved on the first-level lifting screw rod, a first-level lifting guide rail vertically fixed on the frame, and a first-level lifting slider sliding along the first-level lifting guide rail, and the horizontal adjustment assembly is fixedly connected to the first-level lifting nut and the first-level lifting slider.

[0006] Furthermore, the horizontal adjustment component includes: a beam lifting platform is fixed on the first-level lifting nut, a beam is horizontally slidably connected to the beam lifting platform, a horizontal adjustment rack is arranged on the beam along its extension direction, a horizontal adjustment motor is installed on the beam lifting platform, a horizontal adjustment gear is arranged at the output end of the horizontal adjustment motor, the horizontal adjustment gear is meshed with the horizontal adjustment rack to drive the beam to slide horizontally, a horizontal adjustment guide rail is horizontally fixed on the beam, and a horizontal adjustment slider which slides along the horizontal adjustment guide rail is fixed on the beam lifting platform.

[0007] Furthermore, the secondary lifting assembly includes: a secondary lifting motor installed at the end of the beam lifting platform, a secondary lifting driving gear coaxially connected to the output shaft of the secondary lifting motor, a secondary lifting transition gear externally meshed with the secondary lifting driving gear, a secondary lifting driven gear externally meshed with the secondary lifting transition gear, a secondary lifting screw rod passing through the secondary lifting driven gear, and a secondary lifting nut sleeved on the secondary lifting screw rod, the secondary lifting transition gear is rotatably connected to the beam, the secondary lifting nut is transmission-connected with the secondary lifting driven gear key, both ends of the secondary lifting screw rod are installed on the secondary lifting column, a secondary lifting guide rail is vertically fixed on the secondary lifting column, a secondary lifting slider is slidably connected to the secondary lifting guide rail, and the secondary lifting slider is fixed to the end of the beam.

[0008] Furthermore, the rotating assembly includes: a turntable, a rotating motor mounted on the turntable, a driving sprocket coaxially connected to an output shaft of the rotating motor, and a driven sprocket chain-drivenly connected to the driving sprocket.

[0009] Furthermore, the turntable includes a base and a turntable shaft rotatably connected to the base via a bearing, the driven sprocket is sleeved on the turntable shaft, a turntable is fixed to the top end of the turntable shaft, and a plurality of claw assemblies are fixed on the turntable in a circular array.

[0010] Furthermore, the claw assembly includes a claw seat fixed on the turntable, a claw screw installed on the claw seat, and a locking block sleeved on the claw screw.

[0011] Furthermore, the polishing assembly also includes: a polishing cylinder is installed on the mounting column, a limiting rod is installed on the telescopic end of the polishing cylinder, a limiting plate is fixed on the polishing cylinder, a limiting hole is opened on the limiting plate for limiting the limiting rod, and the limiting rod extends through the limiting hole.

[0012] Furthermore, a bracket is vertically fixed to the outer side of the motor mounting plate, and the telescopic end of the second fine-tuning cylinder is hinged to the top end of the bracket.

[0013] Furthermore, a protective cover is arranged outside the horizontal adjustment rack.

[0014] The beneficial effects of a polishing machine of the utility model are:

[0015] 1. The utility model adjusts the position of the polishing component through a primary lifting component, a secondary lifting component and a horizontal adjustment component, and fine-tunes the angle of the polishing component through a fine-tuning component, so that the polishing component always fits the wall surface of the workpiece to be polished, and drives the workpiece to be polished to rotate while polishing through a rotating component, so as to achieve uniform polishing of all parts of the workpiece to be polished, with a high degree of automation and good polishing effect, which can greatly improve the polishing efficiency and save manpower and material resources.

[0016] 2. The utility model uses a claw assembly and adjusts the claw screw to enable the locking block to clamp the workpiece to be polished, which can adapt to the polishing of workpieces of different sizes and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0018] Figure 1 It is the overall structure diagram of the embodiment of the utility model;

[0019] Figure 2 This is a structural diagram of a first-level lifting assembly of an embodiment of the utility model;

[0020] Figure 3 This is a structural diagram of a level adjustment assembly of an embodiment of the utility model;

[0021] Figure 4 It is a structural diagram of a secondary lifting assembly and a polishing assembly of an embodiment of the utility model;

[0022] Figure 5 It is a partial structural diagram of the angle fine-tuning component and a structural diagram of the polishing component of an embodiment of the utility model;

[0023] Figure 6 It is a structural diagram of a rotating assembly according to an embodiment of the utility model.

[0024] In the figure: 1. frame, 2. primary lifting assembly, 20. primary lifting motor, 21. primary lifting screw, 22. primary lifting nut, 23. primary lifting guide rail, 24. primary lifting slider, 3. horizontal adjustment assembly, 30. beam lifting platform, 31. horizontal adjustment motor, 32. horizontal adjustment gear, 33. horizontal adjustment rack, 34. beam, 35. horizontal adjustment guide rail, 36. horizontal adjustment slider, 4. secondary lifting assembly, 40. secondary lifting motor, 41. secondary lifting driving gear, 42. secondary lifting transition gear, 43. secondary lifting driven gear, 44. secondary lifting screw, 45. secondary lifting nut, 46. secondary lifting column, 47. secondary lifting guide rail, 48. secondary lifting slider, 5. angle fine adjustment group Parts, 50, grinding head rotating plate, 51, first fine-tuning cylinder, 52, second fine-tuning cylinder, 53, first through hole, 54, mounting hole, 55, hinge pin, 56, bracket, 57, second through hole, 58, support plate, 6, polishing assembly, 60, motor mounting plate, 61, polishing motor, 62, driving pulley, 63, driven pulley, 64, mounting column, 65, polishing cylinder, 66, limit rod, 67, limit plate, 68, limit hole, 7, rotating assembly, 70, turntable, 700, base, 701, turntable shaft, 71, rotating motor, 72, driving sprocket, 73, driven sprocket, 74, turntable, 75, claw assembly, 751, claw seat, 752, claw screw, 753, locking block, 8, protective cover, 9, workpiece to be polished. DETAILED DESCRIPTION

[0025] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0026] like Figure 1-Figure 6A specific embodiment of a polishing machine of the utility model shown in the figure comprises a frame 1, a first-level lifting assembly 2 installed on the frame 1, a horizontal adjustment assembly 3 installed on the first-level lifting assembly 2, a second-level lifting assembly 4 installed at the end of the horizontal adjustment assembly 3, an angle fine-tuning assembly 5 installed on the second-level lifting assembly 4, a polishing assembly 6 installed on the angle fine-tuning assembly 5, and a rotating assembly 7 for driving the workpiece to be polished to rotate; the position of the polishing assembly 6 is adjusted by the first-level lifting assembly 2, the second-level lifting assembly 4, the horizontal adjustment assembly 3 and the angle fine-tuning assembly 5, so that the polishing belt always fits the workpiece to be polished, and the rotating assembly 7 drives the workpiece to be polished to perform a circular motion, so that the force of the polishing belt is moderate, the mirror polishing process can be better realized, the uncertainty of the surface of the barrel workpiece can be adapted, the polishing of the workpiece to be polished can be better realized, the degree of automation is high, and the polishing efficiency and polishing quality are effectively improved. The first-stage lifting component 2, the second-stage lifting component 4, the horizontal adjustment component 3, the angle fine-tuning component 5 and the rotating component 7 work together to realize the multi-dimensional movement of the polishing component 6, so that the driven pulley 63 always fits the wall surface of the workpiece to be polished, and polishes all parts of the workpiece to be polished. It can polish the inner and outer walls of the barrel body and the head, has a wide range of applications, high polishing accuracy, a high degree of automation, greatly reduces manual labor intensity, and improves production efficiency.

[0027] See also Figure 4 and Figure 5 The polishing assembly 6 includes: a motor mounting plate 60 rotatably connected to the angle fine-tuning assembly 5, a polishing motor 61 mounted on the motor mounting plate 60, a driving pulley 62 coaxially connected to the output shaft of the polishing motor 61, a driven pulley 63 connected to the driving pulley 62 through a grinding belt, a mounting column 64 vertically fixed on the motor mounting plate 60, a polishing cylinder 65 mounted on the mounting column 64, and a driven pulley 63 mounted at the end of the mounting column 64 through a passive wheel frame; a limiting plate 67 is fixed on the end cover of the polishing cylinder 65 close to one end of the telescopic rod, a limiting rod 66 is installed on the telescopic rod of the polishing cylinder 65, a limiting hole 68 for limiting the limiting rod 66 is opened on the limiting plate 67, and the limiting rod 66 passes through the limiting hole 68 and moves along the limiting hole 68. The polishing cylinder 65 works to drive the driven pulley 63 to move up and down, so that the grinding belt located at the driven pulley 63 always fits the wall surface of the workpiece to be polished, so as to achieve the polishing of the workpiece to be polished, which can effectively improve the polishing efficiency and polishing quality. The polishing cylinder 65 is provided, and the distance between the driving pulley 62 and the driven pulley 63 can be adjusted by the telescopic output end of the polishing cylinder 65, so that the tightness of the grinding belt changes, which is convenient for the subsequent replacement of the grinding belt. The polishing motor 61 drives the driving pulley 62 to work, thereby driving the driven pulley 63 and the grinding belt to work, so that the grinding belt always fits the wall surface of the workpiece, so as to achieve the polishing of various parts of the workpiece wall, which can effectively improve the polishing quality.

[0028] like Figure 4 and Figure 5 As shown, the angle fine-tuning assembly 5 includes: the end of the secondary lifting column 46 is rotatably connected to the grinding head rotating plate 50, the grinding head rotating plate 50 is fixed with a support plate 58 perpendicular to it, a first fine-tuning cylinder 51 whose fixed end is pinned to the top of the support plate 58, and a second fine-tuning cylinder 52 whose fixed end is pinned to the grinding head rotating plate 50, a first through hole 53 is opened on the grinding head rotating plate 50, a second through hole 53 is opened on the secondary lifting column 46, the telescopic end of the first fine-tuning cylinder 51 passes through the first through hole 53 and the second through hole 53 in turn, the telescopic end of the first fine-tuning cylinder 51 is opened with a mounting hole 54, a hinge pin 55 passes through the mounting hole 54 and its two ends are fixed to the secondary On the lifting column 46, a bracket 56 is vertically fixed to the outer side of the motor mounting plate 60, and the telescopic end of the second fine-tuning cylinder 52 is hinged to the top of the bracket 56. The first fine-tuning cylinder 51 drives the grinding head rotating plate 50 to rotate around the end of the secondary lifting component 4, and adjusts the angle of the grinding head rotating plate 50 to achieve angle fine-tuning of the polishing component 6. The second fine-tuning cylinder 52 extends / contracts through the bracket 56 to drive the motor mounting plate 60 to rotate around the grinding head rotating plate 50, and adjusts the angle of the motor mounting plate 60, and further achieves angle fine-tuning of the polishing component 6, further ensuring that the grinding belt can always fit the wall surface of the workpiece to be polished, which can effectively improve the polishing efficiency and polishing quality.

[0029] See also Figure 2 The first-level lifting assembly 2 includes: a first-level lifting motor 20 installed at the top of the frame 1, a first-level lifting screw 21 coaxially connected to the output shaft of the first-level lifting motor 20, a first-level lifting nut 22 sleeved and installed on the first-level lifting screw 21, a first-level lifting guide rail 23 located on both sides of the first-level lifting screw 21, and a first-level lifting slider 24 sliding along the first-level lifting guide rail 23. The horizontal adjustment assembly 3 is fixedly connected to the first-level lifting nut 22 and the first-level lifting slider 24. The first-level lifting motor 20 drives the first-level lifting screw 21 to work, drives the first-level lifting nut 22 to move up and down, and thus drives the horizontal adjustment assembly 3 to move up and down along the first-level lifting screw 21, so as to achieve the first-level height adjustment of the polishing assembly 6.

[0030] like Figure 3As shown, the horizontal adjustment component 3 includes: a beam lifting platform 30 is fixed on the first-level lifting nut 22, a beam 34 is horizontally slidably connected to the beam lifting platform 30, a horizontal adjustment rack 33 is arranged on the beam 34 along its extension direction, a horizontal adjustment motor 31 is installed on the beam lifting platform 30, a horizontal adjustment gear 32 meshing with the horizontal adjustment rack 33 is arranged at the output end of the horizontal adjustment motor 31, the horizontal adjustment gear 32 meshing with the horizontal adjustment rack 33 is used to drive the beam 34 to slide horizontally, a horizontal adjustment guide rail 35 is horizontally fixed on the beam 34, a horizontal adjustment slider 36 sliding along the horizontal adjustment guide rail 35 is fixed on the beam lifting platform 30, and the beam lifting platform 30 is fixed on the horizontal adjustment slider 36. The horizontal adjustment motor 31 drives the horizontal adjustment gear 32 to mesh with the horizontal adjustment rack 33 to drive the crossbeam 34 to move in the horizontal direction, thereby driving the polishing assembly 6 to move in the horizontal direction, thereby realizing the horizontal adjustment of the polishing assembly 6, so that the polishing assembly 6 always fits the wall surface of the workpiece to be polished, and polishing is achieved at various locations on the inner and outer walls of the workpiece to be polished, which can effectively improve the polishing efficiency and polishing quality. The first-level lifting assembly 2 and the horizontal adjustment assembly 3 constitute a cross slide rail in a vertical plane, so that the polishing assembly 6 can move in any direction in the vertical plane, thereby improving the flexibility of the equipment.

[0031] See also Figure 4The secondary lifting assembly 4 includes: a secondary lifting motor 40 installed at the end of the beam lifting platform 30, a secondary lifting driving gear 41 coaxially connected to the output shaft of the secondary lifting motor 40, a secondary lifting transition gear 42 externally meshed with the secondary lifting driving gear 41, a secondary lifting driven gear 43 externally meshed with the secondary lifting transition gear 42, a secondary lifting screw rod 44 extending from the secondary lifting driven gear 43, and a secondary lifting nut 45 sleeved on the secondary lifting screw rod 44, and the secondary lifting driven gear 43 sleeved on the secondary lifting nut 4 5 and the secondary lifting nut 45 is connected with the secondary lifting driven gear 43 by key transmission, the secondary lifting screw 44 is vertically installed on the secondary lifting column 46, and two secondary lifting guide rails 47 are vertically fixed on the secondary lifting column 46, and the two secondary lifting guide rails 47 are respectively located on both sides of the secondary lifting screw 44, and the secondary lifting slide block 48 is slidably connected on the secondary lifting guide rail 47, and the cross beam 34 is fixed on the secondary lifting slide block 48. The upper and lower ends of the secondary lifting transition gear 42 are rotatably connected with the gear box through bearings, and the gear box is fixed on the cross beam 34. The secondary lifting motor 40 drives the secondary lifting active gear 41 to work, drives the secondary lifting transition gear 42 to work, and drives the secondary lifting driven gear 43 to work. Through the screw nut transmission mechanism, the secondary lifting column 46 is driven to move up and down, thereby driving the polishing assembly 6 to move up and down, and realizing the height adjustment of the polishing assembly 6, so that the polishing assembly 6 always fits the wall surface of the workpiece to be polished, and realizes the polishing of the inner and outer walls of the workpiece to be polished, thereby improving the polishing efficiency and polishing quality.

[0032] like Figure 6 As shown, the rotating assembly 7 includes: a turntable 70 installed on the ground, a rotating motor 71 installed on the turntable 70, a driving sprocket 72 coaxially connected to the output shaft of the rotating motor 71, and a driven sprocket 73 chain-drivenly connected to the driving sprocket 72. The turntable 70 includes a base 700 and a turntable shaft 701 rotatably connected to the base 700 through a bearing. The driven sprocket 73 is sleeved on the turntable shaft 701 and is key-drivenly connected to the turntable shaft 701. A turntable 74 is fixed to the top of the turntable shaft 701, and a plurality of claw assemblies 75 are fixed to the turntable 74 in a circular array. In this embodiment, four claw assemblies 75 are fixed to the turntable 74 in a circular array, and two adjacent claw assemblies 75 are vertically distributed. The rotating motor 71 drives the active sprocket 72 to rotate, drives the driven sprocket 73 to rotate, and then drives the turntable 74 to rotate, thereby driving the workpiece to be polished to make a circumferential feeding motion, thereby driving the workpiece to be polished to rotate circumferentially, and driving the workpiece to be polished to rotate while polishing, which can achieve uniform polishing of the workpiece to be polished, and effectively improve the polishing efficiency and polishing quality. By setting the rotating component 7, during the polishing process, the workpiece to be polished can be driven to rotate, so that the grinding belt and the workpiece to be polished can rotate relative to each other, so that the grinding belt can polish the inner and outer walls of the workpiece to be polished all around.

[0033] See also Figure 6 The claw assembly 75 includes a claw seat 751 fixed on the turntable 74, a claw screw rod 752 installed on the claw seat 751, and a locking block 753 sleeved on the claw screw rod 752. The claw screw rod 752 is manually adjusted to move, which drives the locking block 753 to move, so as to lock the workpiece to be polished. It can prevent the workpiece to be polished from being thrown out under the action of high-speed centrifugal force during the polishing process, causing polishing failure. The workpiece to be polished is positioned by the claw assembly 75, which can effectively prevent the workpiece to be polished from being Throw it out, by setting the claw assembly 75, under the cooperation of the claw screw rod 752 and the locking block 753, the locking block 753 can clamp the workpiece to be polished, and the four claw assemblies 75 can clamp the workpiece to be processed tighter, and the claw assembly 75 can fix the workpiece to be polished, so that the grinding belt can polish the workpiece to be polished more stably, and the locking block 753 can be controlled to move forward and backward by manually adjusting the claw screw rod 752, so as to meet the needs of fixing workpieces to be polished of different sizes, and has a wide range of applications.

[0034] like Figure 1 As shown, for the sake of safety and aesthetics, a protective cover 8 is provided outside the horizontal adjustment rack 33 .

[0035] The working process of the polishing machine is as follows: when in use, first, the polishing assembly 6 is driven to gradually move toward the workpiece to be polished by controlling the first-level lifting assembly 2, the second-level lifting assembly 4, the horizontal adjustment assembly 3 and the angle fine-tuning assembly 5, so that the polishing belt on the polishing assembly 6 always fits the wall surface of the workpiece to be polished, and then the rotating motor 71 is started to drive the turntable shaft 701 to rotate, and the turntable shaft 701 drives the turntable 74 to rotate, so as to drive the workpiece to be polished to rotate, and drive the workpiece to be polished to rotate while polishing, so as to achieve uniform polishing of the workpiece to be polished, and effectively improve the polishing efficiency and polishing quality, and the distance between the active pulley 62 and the driven pulley 63 can be adjusted by extending / contracting the output end of the polishing cylinder 65, so that the tightness of the polishing belt changes, which is convenient for the subsequent replacement of the polishing belt.

[0036] It should be understood that the specific embodiments described above are only used to explain the present invention, and are not used to limit the present invention. Obvious changes or modifications derived from the spirit of the present invention are still within the scope of protection of the present invention.

Claims

1. A polishing machine, characterized in that: The invention comprises a frame (1), a primary lifting assembly (2) mounted on the frame (1), a horizontal adjustment assembly (3) mounted on the primary lifting assembly (2), a secondary lifting assembly (4) mounted at the end of the horizontal adjustment assembly (3), an angle fine-adjustment assembly (5) mounted on the secondary lifting assembly (4), a polishing assembly (6) mounted on the angle fine-adjustment assembly (5), and a rotating assembly (7) used to drive a workpiece to be polished to rotate; the polishing assembly (6) comprises: a motor mounting plate (60) rotatably connected to the angle fine-adjustment assembly (5), a polishing motor (61) mounted on the motor mounting plate (60), a driving pulley (62) coaxially connected to an output shaft of the polishing motor (61), and a driven belt drive connected to the driving pulley (62) via a polishing belt. The driven pulley (63) is mounted on the motor mounting plate (60) through a mounting column (64); the angle fine-tuning assembly (5) comprises: the end of the secondary lifting assembly (4) is rotatably connected to a grinding head rotating plate (50), a first fine-tuning cylinder (51) and a second fine-tuning cylinder (52) are pinned on the grinding head rotating plate (50), a first through hole (53) is provided on the grinding head rotating plate (50), the telescopic end of the first fine-tuning cylinder (51) passes through the first through hole (53), a mounting hole (54) is provided on the telescopic end of the first fine-tuning cylinder (51), a hinge pin (55) passes through the mounting hole (54) and its two ends are mounted on the secondary lifting assembly (4), and the telescopic end of the second fine-tuning cylinder (52) is hinged to the motor mounting plate (60).

2. A polishing machine according to claim 1, characterized in that: The first-level lifting component (2) comprises: a first-level lifting motor (20) mounted on the top of the frame (1), a first-level lifting screw (21) coaxially connected to the output shaft of the first-level lifting motor (20), a first-level lifting nut (22) sleeved on the first-level lifting screw (21), a first-level lifting guide rail (23) vertically fixed on the frame (1), and a first-level lifting slider (24) sliding along the first-level lifting guide rail (23), and the horizontal adjustment component (3) is fixedly connected to the first-level lifting nut (22) and the first-level lifting slider (24).

3. A polishing machine according to claim 2, characterized in that: The horizontal adjustment component (3) comprises: a beam lifting platform (30) is fixed on the first-level lifting nut (22), a beam (34) is horizontally slidably connected to the beam lifting platform (30), a horizontal adjustment rack (33) is arranged on the beam (34) along its extension direction, a horizontal adjustment motor (31) is installed on the beam lifting platform (30), a horizontal adjustment gear (32) is arranged at the output end of the horizontal adjustment motor (31), the horizontal adjustment gear (32) is meshed with the horizontal adjustment rack (33) to drive the beam (34) to slide horizontally, a horizontal adjustment guide rail (35) is horizontally fixed on the beam (34), and a horizontal adjustment slider (36) sliding along the horizontal adjustment guide rail (35) is fixed on the beam lifting platform (30).

4. A polishing machine according to claim 3, characterized in that: The secondary lifting assembly (4) comprises: a secondary lifting motor (40) installed at the end of the beam lifting platform (30), a secondary lifting driving gear (41) coaxially connected to the output shaft of the secondary lifting motor (40), a secondary lifting transition gear (42) externally meshed with the secondary lifting driving gear (41), a secondary lifting driven gear (43) externally meshed with the secondary lifting transition gear (42), a secondary lifting screw rod (44) extending from the secondary lifting driven gear (43), and a secondary lifting nut (45) sleeved on the secondary lifting screw rod (44), wherein the secondary The upper and lower ends of the lifting transition gear (42) are rotatably connected to the cross beam (34) through bearings. The secondary lifting driven gear (43) is key-sleeved on the secondary lifting nut (45) and is key-connected to the secondary lifting nut (45) and the secondary lifting driven gear (43). The secondary lifting screw rod (44) is vertically installed on the secondary lifting column (46). A secondary lifting guide rail (47) is vertically fixed on the secondary lifting column (46). A secondary lifting slider (48) is slidably connected to the secondary lifting guide rail (47). The secondary lifting slider (48) is fixed to the end of the cross beam (34).

5. A polishing machine according to claim 4, characterized in that: The rotating assembly (7) comprises: a rotating table (70), a rotating motor (71) mounted on the rotating table (70), a driving sprocket (72) coaxially connected to an output shaft of the rotating motor (71), and a driven sprocket (73) chain-drivenly connected to the driving sprocket (72).

6. A polishing machine according to claim 5, characterized in that: The turntable (70) comprises a base (700) and a turntable shaft (701) rotatably connected to the base (700) via a bearing, the driven sprocket (73) is sleeved on the turntable shaft (701), a turntable (74) is fixed at the top end of the turntable shaft (701), and a plurality of claw assemblies (75) are fixed on the turntable (74) in a circular array.

7. A polishing machine according to claim 6, characterized in that: The clamping claw assembly (75) comprises a clamping claw seat (751) fixed on the rotating disk (74), a clamping claw screw rod (752) installed on the clamping claw seat (751), and a locking block (753) sleeved on the clamping claw screw rod (752).

8. A polishing machine according to claim 7, characterized in that: The polishing assembly (6) further comprises: a polishing cylinder (65) is mounted on the mounting column (64); a limiting rod (66) is mounted on the telescopic end of the polishing cylinder (65); a limiting plate (67) is fixed on the polishing cylinder (65); a limiting hole (68) is formed on the limiting plate (67) for limiting the limiting rod (66); and the limiting rod (66) passes through the limiting hole (68).

9. A polishing machine according to claim 8, characterized in that: A bracket (56) is vertically fixed on the outer side of the motor mounting plate (60), and the telescopic end of the second fine-tuning cylinder (52) is hinged to the top end of the bracket (56).

10. A polishing machine according to claim 9, characterized in that: A protective cover (8) is arranged outside the horizontal adjustment rack (33).

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